Release 0.5.5

Add info about the default I2CP port to README.md

README.md

@@ -4,30 +4,44 @@ MuWire is an easy to use file-sharing program which offers anonymity using [I2P
 
 It is inspired by the LimeWire Gnutella client and developped by a former LimeWire developer.
 
-The current stable release - 0.1.5 is avaiable for download at http://muwire.com.  You can find technical documentation in the "doc" folder.
+The current stable release - 0.5.3 is avaiable for download at https://muwire.com.  You can find technical documentation in the "doc" folder.
 
 ### Building
 
-You need JRE 8 or newer.  After installing that and setting up the appropriate paths, just type
+You need JDK 8 or newer.  After installing that and setting up the appropriate paths, just type
 
 ```
-./gradlew assemble 
+./gradlew clean assemble
 ```
 
 If you want to run the unit tests, type
 ```
-./gradlew build
+./gradlew clean build
 ```
 
-Some of the UI tests will fail because they haven't been written yet :-/
+If you want to build binary bundles that do not depend on Java or I2P, see the https://github.com/zlatinb/muwire-pkg project
 
-### Running
+### Running the GUI
 
-You need to have an I2P router up and running on the same machine.  After you build the application, look inside "gui/build/distributions".  Untar/unzip one of the "shadow" files and then run the jar contained inside by typing "java -jar MuWire-x.y.z.jar" in a terminal or command prompt.  If you use a custom I2CP host and port, create a file $HOME/.MuWire/i2p.properties and put "i2cp.tcp.host=<host>" and "i2cp.tcp.post=<port>" in there.
+After you build the application, look inside `gui/build/distributions`.  Untar/unzip one of the `shadow` files and then run the jar contained inside by typing `java -jar gui-x.y.z.jar` in a terminal or command prompt.
 
-The first time you run MuWire it will ask you to select a nickname.  This nickname will be displayed with search results, so that others can verify the file was shared by you.  It is best to leave MuWire running all the time, just like I2P.
+If you have an I2P router running on the same machine that is all you need to do.  If you use a custom I2CP host and port, create a file `i2p.properties` and put `i2cp.tcp.host=<host>` and `i2cp.tcp.port=<port>` in there.  On Windows that file should go into `%HOME%\AppData\Roaming\MuWire`, on Mac into `$HOME/Library/Application Support/MuWire` and on Linux `$HOME/.MuWire`
+
+[Default I2CP port]\: `7654`
+
+### Running the CLI
+
+Look inside `cli-lanterna/build/distributions`.  Untar/unzip one of the `shadow` files and then run the jar contained inside by typing `java -jar cli-lanterna-x.y.z.jar` in a terminal.  The CLI will ask you about the router host and port on startup, no need to edit any files.
+
+The CLI is under active development and doesn't have all the features of the GUI.
+
+### GPG Fingerprint
+
+```
+471B 9FD4 5517 A5ED 101F  C57D A728 3207 2D52 5E41
+```
+
+You can find the full key at https://keybase.io/zlatinb
 
 
-### Known bugs and limitations
-
-* Many UI features you would expect are not there yet
+[Default I2CP port]: https://geti2p.net/en/docs/ports

TODO.md

@@ -4,10 +4,6 @@ Not in any particular order yet
 
 ### Big Items
 
-##### Alternate Locations
-
-This helps peers discover new sources for a file while the download is in progress.  Also makes sharing of partial files possible.
-
 ##### Bloom Filters
 
 This reduces query traffic by not sending last hop queries to peers that definitely do not have the file
@@ -16,27 +12,15 @@ This reduces query traffic by not sending last hop queries to peers that definit
 
 This helps with scalability
 
-##### Trust List Sharing
-
-For helping users make better decisions whom to trust
-
-##### Content Control Panel
-
-To allow every user to not route queries for content they do not like.  This is mostly GUI work, the backend part is simple
-
-##### Packaging With JRE, Embedded Router
-
-For ease of deployment for new users, and so that users do not need to run a separate I2P router
-
 ##### Web UI, REST Interface, etc.
 
 Basically any non-gui non-cli user interface
 
+##### Metadata editing and search
+
+To enable parsing of metadata from known file types and the user editing it or adding manual metadata
+
 ### Small Items
 
-* Detect if router is dead and show warning or exit
 * Wrapper of some kind for in-place upgrades
-* Download file sequentially
-* Unsharing of files
-* Multiple-selection download, Ctrl-A
-* Automatic sharing of new files in shared directories (more like medium item)
+* Automatic adjustment of number of I2P tunnels

build.gradle

@@ -2,7 +2,7 @@ subprojects {
     apply plugin: 'groovy'
 
     dependencies {
-        compile 'net.i2p:i2p:0.9.40'
+        compile "net.i2p:i2p:${i2pVersion}"
         compile 'org.codehaus.groovy:groovy-all:2.4.15'
     }
 

cli-lanterna/build.gradle

@@ -0,0 +1,23 @@
+buildscript {
+
+    repositories {
+        jcenter()
+        mavenLocal()
+    }
+
+    dependencies {
+        classpath 'com.github.jengelman.gradle.plugins:shadow:2.0.4'
+    }
+}
+
+apply plugin : 'application'
+mainClassName = 'com.muwire.clilanterna.CliLanterna'
+apply plugin : 'com.github.johnrengelman.shadow'
+
+applicationDefaultJvmArgs = ['-Djava.util.logging.config.file=logging.properties']
+
+dependencies {
+    compile project(":core")
+    compile 'com.googlecode.lanterna:lanterna:3.0.1'
+}
+

cli-lanterna/src/main/groovy/com/muwire/clilanterna/AddCommentView.groovy

@@ -0,0 +1,65 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.TextBox
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.muwire.core.Core
+import com.muwire.core.SharedFile
+import com.muwire.core.files.UICommentEvent
+import com.muwire.core.util.DataUtil
+
+import net.i2p.data.Base64
+
+class AddCommentView extends BasicWindow {
+    private final TextGUI textGUI
+    private final Core core
+    private final TextBox textBox
+    private final LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+      
+    AddCommentView(TextGUI textGUI, Core core, SharedFile sharedFile, TerminalSize terminalSize) {
+        super("Add Comment To "+sharedFile.getFile().getName())
+        this.textGUI = textGUI
+        this.core = core
+        
+        setHints([Window.Hint.CENTERED])
+
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+                
+        String oldComment = sharedFile.getComment()
+        if (oldComment == null)
+            oldComment = ""
+        else
+            oldComment = DataUtil.readi18nString(Base64.decode(oldComment))
+            
+        TerminalSize boxSize = new TerminalSize((terminalSize.getColumns() / 2).toInteger(), (terminalSize.getRows() / 2).toInteger())
+        textBox = new TextBox(boxSize,oldComment,TextBox.Style.MULTI_LINE)    
+        contentPanel.addComponent(textBox, layoutData)
+        
+        Panel buttonsPanel = new Panel()
+        buttonsPanel.setLayoutManager(new GridLayout(2))
+        contentPanel.addComponent(buttonsPanel, layoutData)
+        
+        Button saveButton = new Button("Save", {
+            String newComment = textBox.getText()
+            newComment = Base64.encode(DataUtil.encodei18nString(newComment))
+            String encodedOldComment = sharedFile.getComment()
+            sharedFile.setComment(newComment)
+            core.eventBus.publish(new UICommentEvent(sharedFile : sharedFile, oldComment : encodedOldComment))
+            close()
+        })
+        Button cancelButton = new Button("Cancel", {close()})
+        
+        buttonsPanel.addComponent(saveButton, layoutData)
+        buttonsPanel.addComponent(cancelButton, layoutData)
+        
+        setComponent(contentPanel)
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/BrowseModel.groovy

@@ -0,0 +1,75 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.Label
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.table.TableModel
+import com.muwire.core.Core
+import com.muwire.core.Persona
+import com.muwire.core.search.BrowseStatus
+import com.muwire.core.search.BrowseStatusEvent
+import com.muwire.core.search.UIBrowseEvent
+import com.muwire.core.search.UIResultEvent
+
+import net.i2p.data.Base64
+import net.i2p.data.DataHelper
+
+class BrowseModel {
+    private final Persona persona
+    private final Core core
+    private final TextGUIThread guiThread
+    private final TableModel model = new TableModel("Name","Size","Hash","Comment")
+    private Map<String, UIResultEvent> rootToResult = new HashMap<>()
+    
+    private int totalResults
+    
+    private Label status
+    private Label percentage
+    
+    BrowseModel(Persona persona, Core core, TextGUIThread guiThread) {
+        this.persona = persona
+        this.core = core
+        this.guiThread = guiThread
+        
+        core.eventBus.register(BrowseStatusEvent.class, this)
+        core.eventBus.register(UIResultEvent.class, this)
+        core.eventBus.publish(new UIBrowseEvent(host : persona))
+    }
+    
+    void unregister() {
+        core.eventBus.unregister(BrowseStatusEvent.class, this)
+        core.eventBus.unregister(UIResultEvent.class, this)
+    }
+    
+    void onBrowseStatusEvent(BrowseStatusEvent e) {
+        guiThread.invokeLater {
+            status.setText(e.status.toString())
+            if (e.status == BrowseStatus.FETCHING)
+                totalResults = e.totalResults
+        }
+    }
+    
+    void onUIResultEvent(UIResultEvent e) {
+        guiThread.invokeLater {
+            String size = DataHelper.formatSize2Decimal(e.size, false) + "B"
+            String infoHash = Base64.encode(e.infohash.getRoot())
+            String comment = String.valueOf(e.comment != null)
+            model.addRow(e.name, size, infoHash, comment)
+            rootToResult.put(infoHash, e)
+            
+            String percentageString = ""
+            if (totalResults != 0) {
+                double percentage = Math.round( (model.getRowCount() * 100 / totalResults).toDouble() )
+                percentageString = String.valueOf(percentage)+"%"
+            }
+            percentage.setText(percentageString)
+        }
+    }
+    
+    void setStatusLabel(Label status) {
+        this.status = status
+    }
+    
+    void setPercentageLabel(Label percentage) {
+        this.percentage = percentage
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/BrowseView.groovy

@@ -0,0 +1,111 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.Label
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.table.Table
+import com.muwire.core.Core
+import com.muwire.core.download.UIDownloadEvent
+import com.muwire.core.search.UIResultEvent
+
+
+class BrowseView extends BasicWindow {
+    private final BrowseModel model
+    private final TextGUI textGUI
+    private final Core core
+    private final Table table
+    private final TerminalSize terminalSize
+    private final LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false) 
+    
+    BrowseView(BrowseModel model, TextGUI textGUI, Core core, TerminalSize terminalSize) {
+        super("Browse "+model.persona.getHumanReadableName())
+        this.model = model
+        this.textGUI = textGUI
+        this.core = core
+        this.terminalSize = terminalSize
+        
+        setHints([Window.Hint.EXPANDED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        
+        Label statusLabel = new Label("")
+        Label percentageLabel = new Label("")
+        model.setStatusLabel(statusLabel)
+        model.setPercentageLabel(percentageLabel)
+        
+        Panel topPanel = new Panel()
+        topPanel.setLayoutManager(new GridLayout(2))
+        topPanel.addComponent(statusLabel, layoutData)
+        topPanel.addComponent(percentageLabel, layoutData)
+        contentPanel.addComponent(topPanel, layoutData)
+        
+        table = new Table("Name","Size","Hash","Comment")
+        table.with { 
+            setCellSelection(false)
+            setTableModel(model.model)
+            setVisibleRows(terminalSize.getRows())
+            setSelectAction({rowSelected()})
+        }
+        contentPanel.addComponent(table, layoutData)
+        
+        Button closeButton = new Button("Close",{
+            model.unregister()
+            close()
+        })
+        contentPanel.addComponent(closeButton, layoutData)
+        setComponent(contentPanel)
+        
+    }
+    
+    private void rowSelected() {
+        int selectedRow = table.getSelectedRow()
+        def row = model.model.getRow(selectedRow)
+        String infoHash = row[2]
+        boolean comment = Boolean.parseBoolean(row[3])
+        if (comment) {
+            Window prompt = new BasicWindow("Download Or View Comment")
+            prompt.setHints([Window.Hint.CENTERED])
+            Panel contentPanel = new Panel()
+            contentPanel.setLayoutManager(new GridLayout(3))
+            Button downloadButton = new Button("Download", {download(infoHash)})
+            Button viewButton = new Button("View Comment", {viewComment(infoHash)})
+            Button closeButton = new Button("Cancel", {prompt.close()})
+            
+            contentPanel.with { 
+                addComponent(downloadButton, layoutData)
+                addComponent(viewButton, layoutData)
+                addComponent(closeButton, layoutData)
+            }
+            
+            prompt.setComponent(contentPanel)
+            downloadButton.takeFocus()
+            textGUI.addWindowAndWait(prompt)
+        } else {
+            download(infoHash)
+        }
+    }
+    
+    private void download(String infoHash) {
+        UIResultEvent result = model.rootToResult[infoHash]
+        def file = new File(core.muOptions.downloadLocation, result.name)
+        core.eventBus.publish(new UIDownloadEvent(result : [result], sources : result.sources,
+            target : file, sequential : false))
+        MessageDialog.showMessageDialog(textGUI, "Download started", "Started download of "+result.name, MessageDialogButton.OK)
+    }
+    
+    private void viewComment(String infoHash) {
+        UIResultEvent result = model.rootToResult[infoHash]
+        ViewCommentView view = new ViewCommentView(result, terminalSize)
+        textGUI.addWindowAndWait(view)
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/CliLanterna.groovy

@@ -0,0 +1,193 @@
+package com.muwire.clilanterna
+
+import java.nio.charset.StandardCharsets
+import java.util.concurrent.CountDownLatch
+import java.util.logging.Level
+import java.util.logging.LogManager
+
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Border
+import com.googlecode.lanterna.gui2.BorderLayout
+import com.googlecode.lanterna.gui2.Borders
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.Label
+import com.googlecode.lanterna.gui2.MultiWindowTextGUI
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.SeparateTextGUIThread
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.WindowBasedTextGUI
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.dialogs.TextInputDialog
+import com.googlecode.lanterna.gui2.dialogs.TextInputDialogBuilder
+import com.googlecode.lanterna.gui2.dialogs.WaitingDialog
+import com.googlecode.lanterna.screen.Screen
+import com.googlecode.lanterna.terminal.DefaultTerminalFactory
+import com.googlecode.lanterna.terminal.Terminal
+import com.muwire.core.Core
+import com.muwire.core.MuWireSettings
+import com.muwire.core.UILoadedEvent
+import com.muwire.core.files.AllFilesLoadedEvent
+
+class CliLanterna {
+    private static final String MW_VERSION = "0.5.5"
+    
+    private static volatile Core core
+    
+    private static WindowBasedTextGUI textGUI
+    
+    public static void main(String[] args) {
+        if (System.getProperty("java.util.logging.config.file") == null) {
+            def names = LogManager.getLogManager().getLoggerNames()
+            while(names.hasMoreElements()) {
+                def name = names.nextElement()
+                LogManager.getLogManager().getLogger(name).setLevel(Level.SEVERE)
+            }
+        }
+        
+        def home = System.getProperty("user.home") + File.separator + ".MuWire"
+        home = new File(home)
+        if (!home.exists())
+            home.mkdirs()
+
+        def propsFile = new File(home,"MuWire.properties")
+        
+        
+        DefaultTerminalFactory terminalFactory = new DefaultTerminalFactory()
+        Screen screen = terminalFactory.createScreen()
+        textGUI = new MultiWindowTextGUI( new SeparateTextGUIThread.Factory(), screen)
+        textGUI.getGUIThread().start()
+        screen.startScreen()
+
+        def props
+        if (!propsFile.exists()) {
+            String nickname = TextInputDialog.showDialog(textGUI, "Select a nickname", "", "")
+            String defaultDownloadLocation = System.getProperty("user.home")+File.separator+"Downloads"
+            String downloadLocation = TextInputDialog.showDialog(textGUI, "Select download location", "", defaultDownloadLocation)
+            String defaultIncompletesLocation = System.getProperty("user.home")+File.separator+".MuWire"+File.separator+"incompletes"
+            String incompletesLocation = TextInputDialog.showDialog(textGUI, "Select incompletes location", "", defaultIncompletesLocation)
+            
+            
+            File downloadLocationFile = new File(downloadLocation)
+            if (!downloadLocationFile.exists())
+                downloadLocationFile.mkdirs()
+            File incompletesLocationFile = new File(incompletesLocation)
+            if (!incompletesLocationFile.exists())
+                incompletesLocationFile.mkdirs()
+            
+            props = new MuWireSettings()
+            props.setNickname(nickname)
+            props.setDownloadLocation(downloadLocationFile)
+            props.incompleteLocation = incompletesLocationFile
+            
+            propsFile.withOutputStream { 
+                props.write(it)
+            }
+        } else {
+            props = new Properties()
+            propsFile.withInputStream { 
+                props.load(it)
+            }
+            props = new MuWireSettings(props)
+        }
+        props.updateType = "cli-lanterna"
+                
+        def i2pPropsFile = new File(home, "i2p.properties")
+        if (!i2pPropsFile.exists()) {
+            String i2pHost = TextInputDialog.showDialog(textGUI, "I2P router host", "Specifiy the host I2P router is on", "127.0.0.1")
+            int i2pPort = TextInputDialog.showNumberDialog(textGUI, "I2CP port", "Specify the I2CP port", "7654").toInteger()
+            
+            Properties i2pProps = new Properties()
+            i2pProps["i2cp.tcp.host"] = i2pHost
+            i2pProps["i2cp.tcp.port"] = String.valueOf(i2pPort)
+            i2pPropsFile.withOutputStream { i2pProps.store(it, "") }
+        }
+ 
+        def cliProps 
+        def cliPropsFile = new File(home, "cli.properties")
+        if (cliPropsFile.exists()) {
+            Properties p = new Properties()
+            cliPropsFile.withInputStream { 
+                p.load(it)
+            }
+            cliProps = new CliSettings(p)
+        } else
+            cliProps = new CliSettings(new Properties())
+               
+
+        Window window = new BasicWindow("MuWire "+ MW_VERSION)
+        window.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.withBorder(Borders.doubleLine())
+        BorderLayout layout = new BorderLayout()
+        contentPanel.setLayoutManager(layout)
+        
+        Panel welcomeNamePanel = new Panel()
+        contentPanel.addComponent(welcomeNamePanel, BorderLayout.Location.CENTER)
+        welcomeNamePanel.setLayoutManager(new GridLayout(1))
+        Label welcomeLabel = new Label("Welcome to MuWire "+ props.nickname)
+        welcomeNamePanel.addComponent(welcomeLabel, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER))
+        
+
+        Panel connectButtonPanel = new Panel()
+        contentPanel.addComponent(connectButtonPanel, BorderLayout.Location.BOTTOM)
+        connectButtonPanel.setLayoutManager(new GridLayout(1))
+        Button connectButton = new Button("Connect", {
+            
+            WaitingDialog waiting = new WaitingDialog("Connecting", "Please wait")
+            waiting.showDialog(textGUI, false)
+            
+            CountDownLatch latch = new CountDownLatch(1)
+            Thread connector = new Thread({
+                try {
+                    core = new Core(props, home, MW_VERSION)
+                } finally {
+                    latch.countDown()
+                }
+            })
+            connector.start()
+            while(latch.getCount() > 0) {
+                textGUI.updateScreen()
+                Thread.sleep(10)
+            }
+            waiting.close()
+            window.close()
+        } as Runnable)
+        welcomeNamePanel.addComponent(connectButton, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER))
+        
+        
+        window.setComponent(contentPanel)
+        textGUI.addWindowAndWait(window)
+
+        if (core == null) {
+            MessageDialog.showMessageDialog(textGUI, "Failed", "MuWire failed to load", MessageDialogButton.Close)
+            System.exit(1)
+        }        
+        
+        window = new MainWindowView("MuWire "+MW_VERSION, core, textGUI, screen, cliProps)
+        core.startServices()
+        
+        core.eventBus.publish(new UILoadedEvent())
+        textGUI.addWindowAndWait(window)
+        
+        CountDownLatch latch = new CountDownLatch(1)
+        Thread stopper = new Thread({
+            core.shutdown()
+            latch.countDown()
+        } as Runnable)
+        WaitingDialog waitingForShutdown = new WaitingDialog("MuWire is shutting down","Please wait")
+        waitingForShutdown.setHints([Window.Hint.CENTERED])
+        waitingForShutdown.showDialog(textGUI, false)
+        stopper.start()
+        while(latch.getCount() > 0) {
+            textGUI.updateScreen()
+            Thread.sleep(10)
+        }
+        waitingForShutdown.close()
+        
+        screen.stopScreen()
+        System.exit(0)
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/CliSettings.groovy

@@ -0,0 +1,25 @@
+package com.muwire.clilanterna
+
+class CliSettings {
+    
+    boolean clearCancelledDownloads
+    boolean clearFinishedDownloads
+    boolean clearUploads
+    
+    CliSettings(Properties props) {
+        clearCancelledDownloads = Boolean.parseBoolean(props.getProperty("clearCancelledDownloads","true"))
+        clearFinishedDownloads = Boolean.parseBoolean(props.getProperty("clearFinishedDownloads", "false"))
+        clearUploads = Boolean.parseBoolean(props.getProperty("clearUploads", "false"))
+    }
+    
+    void write(OutputStream os) {
+        Properties props = new Properties()
+        props.with { 
+            setProperty("clearCancelledDownloads", String.valueOf(clearCancelledDownloads))
+            setProperty("clearFinishedDownloads", String.valueOf(clearFinishedDownloads))
+            setProperty("clearUploads", String.valueOf(clearUploads))
+            
+            store(os, "CLI Properties")
+        }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/DownloadDetailsView.groovy

@@ -0,0 +1,67 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.Label
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.Window
+import com.muwire.core.download.Downloader
+
+
+class DownloadDetailsView extends BasicWindow {
+    private final Downloader downloader
+    private final LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+    
+    private Label knownSources, activeSources, donePieces
+    DownloadDetailsView(Downloader downloader) {
+        super("Download details for "+downloader.file.getName())
+        this.downloader = downloader
+        
+        setHints([Window.Hint.CENTERED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(2))
+        
+        knownSources = new Label("0")
+        activeSources = new Label("0")
+        donePieces = new Label("0")
+        refresh()
+        
+        Button refreshButton = new Button("Refresh",{refresh()})
+        Button closeButton = new Button("Close", {close()})
+        
+        contentPanel.with { 
+            addComponent(new Label("Target Location"), layoutData)
+            addComponent(new Label(downloader.file.getAbsolutePath()), layoutData)
+            addComponent(new Label("Piece Size"), layoutData)
+            addComponent(new Label(String.valueOf(downloader.pieceSize)), layoutData)
+            addComponent(new Label("Total Pieces"), layoutData)
+            addComponent(new Label(String.valueOf(downloader.nPieces)), layoutData)
+            addComponent(new Label("Done Pieces"), layoutData)
+            addComponent(donePieces, layoutData)
+            addComponent(new Label("Known Sources"), layoutData)
+            addComponent(knownSources, layoutData)
+            addComponent(new Label("Active Sources"), layoutData)
+            addComponent(activeSources, layoutData)
+            addComponent(refreshButton, layoutData)
+            addComponent(closeButton, layoutData)
+        }
+        
+        setComponent(contentPanel)
+        
+    }
+    
+    private void refresh() {
+        int done = downloader.donePieces()
+        int known = downloader.activeWorkers.size()
+        int active = downloader.activeWorkers()
+        
+        knownSources.setText(String.valueOf(known))
+        activeSources.setText(String.valueOf(active))
+        donePieces.setText(String.valueOf(done))
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/DownloaderWrapper.groovy

@@ -0,0 +1,15 @@
+package com.muwire.clilanterna
+
+import com.muwire.core.download.Downloader
+
+class DownloaderWrapper {
+    final Downloader downloader
+    DownloaderWrapper(Downloader downloader) {
+        this.downloader = downloader
+    }
+    
+    @Override
+    public String toString() {
+        downloader.file.getName()
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/DownloadsModel.groovy

@@ -0,0 +1,100 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.table.TableModel
+
+import com.muwire.core.Core
+import com.muwire.core.download.DownloadStartedEvent
+import com.muwire.core.download.Downloader
+import com.muwire.core.files.FileDownloadedEvent
+
+import net.i2p.data.DataHelper
+
+class DownloadsModel {
+    private final TextGUIThread guiThread
+    private final Core core
+    private final CliSettings props
+    private final List<Downloader> downloaders = new ArrayList<>()
+    private final TableModel model = new TableModel("Name", "Status", "Progress", "Speed", "ETA")
+    
+    
+    private long lastRetryTime
+    
+    DownloadsModel(TextGUIThread guiThread, Core core, CliSettings props) {
+        this.guiThread = guiThread
+        this.core = core
+        this.props = props
+        
+        core.eventBus.register(DownloadStartedEvent.class, this)
+        Timer timer = new Timer(true)
+        Runnable guiRunnable = {
+            refreshModel()
+            resumeDownloads()
+        }
+        timer.schedule({
+            if (core.shutdown.get())
+                return
+            guiThread.invokeLater(guiRunnable)
+        } as TimerTask, 1000,1000)
+    }
+    
+    void onDownloadStartedEvent(DownloadStartedEvent e) {
+        guiThread.invokeLater({
+            downloaders.add(e.downloader)
+            refreshModel()
+        })
+    }
+    
+    private void refreshModel() {
+        int rowCount = model.getRowCount()
+        rowCount.times { model.removeRow(0) }
+        
+        if (props.clearCancelledDownloads) {
+            downloaders.removeAll { it.cancelled }
+        }
+        if (props.clearFinishedDownloads) {
+            downloaders.removeAll { it.getCurrentState() == Downloader.DownloadState.FINISHED }
+        }
+        
+        downloaders.each { 
+            String status = it.getCurrentState().toString()
+            int speedInt = it.speed()
+            String speed = DataHelper.formatSize2Decimal(speedInt, false) + "B/sec"
+            
+            int pieces = it.nPieces
+            int done = it.donePieces()
+            int percent = -1
+            if (pieces != 0)
+                percent = (done * 100 / pieces)
+            String totalSize = DataHelper.formatSize2Decimal(it.length, false) + "B"
+            String progress = (String.format("%2d", percent) + "% of ${totalSize}".toString())
+            
+            String ETA
+            if (speedInt == 0)
+                ETA = "Unknown"
+            else {
+                long remaining = (pieces - done) * it.pieceSize / speedInt
+                ETA = DataHelper.formatDuration(remaining * 1000)
+            }
+
+            model.addRow([new DownloaderWrapper(it), status, progress, speed, ETA])
+        }
+        
+    }
+    
+    private void resumeDownloads() {
+        int retryInterval = core.muOptions.downloadRetryInterval
+        if (retryInterval == 0)
+            return
+        retryInterval *= 1000
+        long now = System.currentTimeMillis()
+        if (now - lastRetryTime > retryInterval) {
+            lastRetryTime = now
+            downloaders.each { 
+                def state = it.getCurrentState()
+                if (state == Downloader.DownloadState.FAILED || state == Downloader.DownloadState.DOWNLOADING)
+                    it.resume()
+            }
+        }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/DownloadsView.groovy

@@ -0,0 +1,94 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.table.Table
+import com.muwire.core.Core
+import com.muwire.core.download.Downloader
+import com.muwire.core.download.UIDownloadCancelledEvent
+
+class DownloadsView extends BasicWindow {
+    private final Core core
+    private final DownloadsModel model
+    private final TextGUI textGUI
+    private final Table table
+    
+    DownloadsView(Core core, DownloadsModel model, TextGUI textGUI, TerminalSize terminalSize) {
+        this.core = core
+        this.model = model
+        this.textGUI = textGUI
+        
+        setHints([Window.Hint.EXPANDED])
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false)
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        table = new Table("Name","Status","Progress","Speed","ETA")
+        table.setCellSelection(false)
+        table.setSelectAction({rowSelected()})
+        table.setTableModel(model.model)
+        table.setVisibleRows(terminalSize.getRows())
+        contentPanel.addComponent(table, layoutData)
+
+        Panel buttonsPanel = new Panel()
+        buttonsPanel.setLayoutManager(new GridLayout(2))
+        
+        Button clearButton = new Button("Clear Done",{clearDone()})
+        buttonsPanel.addComponent(clearButton, layoutData)
+                
+        Button closeButton = new Button("Close",{close()})
+        buttonsPanel.addComponent(closeButton, layoutData)
+        
+        contentPanel.addComponent(buttonsPanel, layoutData)
+        
+        setComponent(contentPanel)
+        closeButton.takeFocus()
+    }
+    
+    private void rowSelected() {
+        int selectedRow = table.getSelectedRow()
+        def row = model.model.getRow(selectedRow)
+        Downloader downloader = row[0].downloader
+        
+        Window prompt = new BasicWindow("Kill Download?")
+        prompt.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(3))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        
+        Button killDownload = new Button("Kill Download", {
+            downloader.cancel()
+            core.eventBus.publish(new UIDownloadCancelledEvent(downloader : downloader))
+            MessageDialog.showMessageDialog(textGUI, "Download Killed", downloader.file.getName()+ " has been killed", MessageDialogButton.OK)
+        })
+        Button viewDetails = new Button("View Details", {
+            textGUI.addWindowAndWait(new DownloadDetailsView(downloader))
+        })
+        Button close = new Button("Close", {
+            prompt.close()  
+        })
+        
+        contentPanel.addComponent(killDownload,layoutData)
+        contentPanel.addComponent(viewDetails, layoutData)
+        contentPanel.addComponent(close, layoutData)
+        prompt.setComponent(contentPanel)
+        close.takeFocus()
+        textGUI.addWindowAndWait(prompt)
+    }
+    
+    private void clearDone() {
+        model.downloaders.removeAll {
+            def state = it.getCurrentState() 
+            state == Downloader.DownloadState.CANCELLED || state == Downloader.DownloadState.FINISHED
+        }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/FilesModel.groovy

@@ -0,0 +1,80 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.table.TableModel
+import com.muwire.core.Core
+import com.muwire.core.SharedFile
+import com.muwire.core.files.AllFilesLoadedEvent
+import com.muwire.core.files.DirectoryWatchedEvent
+import com.muwire.core.files.FileHashedEvent
+import com.muwire.core.files.FileLoadedEvent
+import com.muwire.core.files.FileSharedEvent
+import com.muwire.core.files.FileUnsharedEvent
+import com.muwire.core.trust.TrustSubscriptionEvent
+
+import net.i2p.data.DataHelper
+
+class FilesModel {
+    private final TextGUIThread guiThread
+    private final Core core
+    private final List<SharedFile> sharedFiles = new ArrayList<>()
+    private final TableModel model = new TableModel("Name","Size","Comment","Search Hits","Downloaders")
+    
+    FilesModel(TextGUIThread guiThread, Core core) {
+        this.guiThread = guiThread
+        this.core = core
+        
+        core.eventBus.register(FileLoadedEvent.class, this)
+        core.eventBus.register(FileUnsharedEvent.class, this)
+        core.eventBus.register(FileHashedEvent.class, this)
+        core.eventBus.register(AllFilesLoadedEvent.class, this)
+        
+        Runnable refreshModel = {refreshModel()}
+        Timer timer = new Timer(true)
+        timer.schedule({
+            guiThread.invokeLater(refreshModel)
+        } as TimerTask, 1000,1000)
+        
+    }
+    
+    void onAllFilesLoadedEvent(AllFilesLoadedEvent e) {
+        def eventBus = core.eventBus
+        guiThread.invokeLater {
+            core.muOptions.watchedDirectories.each {
+                eventBus.publish(new DirectoryWatchedEvent(directory : new File(it)))
+            }
+        }
+    }
+    
+    void onFileLoadedEvent(FileLoadedEvent e) {
+        guiThread.invokeLater {
+            sharedFiles.add(e.loadedFile)
+        }
+    }
+    
+    void onFileHashedEvent(FileHashedEvent e) {
+        guiThread.invokeLater {
+            if (e.sharedFile != null)
+                sharedFiles.add(e.sharedFile)
+        }
+    }
+    
+    void onFileUnsharedEvent(FileUnsharedEvent e) {
+        guiThread.invokeLater {
+            sharedFiles.remove(e.unsharedFile)
+        }
+    }
+    
+    private void refreshModel() {
+        int rowCount = model.getRowCount()
+        rowCount.times { model.removeRow(0) }
+        
+        sharedFiles.each { 
+            long size = it.getCachedLength()
+            boolean comment = it.comment != null
+            String hits = String.valueOf(it.getHits())
+            String downloaders = String.valueOf(it.getDownloaders().size())
+            model.addRow(new SharedFileWrapper(it), DataHelper.formatSize2(size, false)+"B", comment, hits, downloaders)
+        }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/FilesView.groovy

@@ -0,0 +1,131 @@
+package com.muwire.clilanterna
+
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.dialogs.FileDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.dialogs.TextInputDialog
+import com.googlecode.lanterna.gui2.table.Table
+import com.muwire.core.Core
+import com.muwire.core.SharedFile
+import com.muwire.core.files.DirectoryUnsharedEvent
+import com.muwire.core.files.FileSharedEvent
+import com.muwire.core.files.FileUnsharedEvent
+import com.muwire.core.files.UIPersistFilesEvent
+
+class FilesView extends BasicWindow {
+    private final FilesModel model
+    private final TextGUI textGUI
+    private final Core core
+    private final Table table
+    private final TerminalSize terminalSize
+    
+    FilesView(FilesModel model, TextGUI textGUI, Core core, TerminalSize terminalSize) {
+        super("Shared Files")
+        this.model = model
+        this.core = core
+        this.textGUI = textGUI
+        this.terminalSize = terminalSize
+        
+        setHints([Window.Hint.EXPANDED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false)
+        
+        table = new Table("Name","Size","Comment","Search Hits","Downloaders")
+        table.setCellSelection(false)
+        table.setTableModel(model.model)
+        table.setSelectAction({rowSelected()})
+        table.setVisibleRows(terminalSize.getRows())
+        contentPanel.addComponent(table, layoutData)
+        
+        Panel buttonsPanel = new Panel()
+        buttonsPanel.setLayoutManager(new GridLayout(4))
+        
+        Button shareFile = new Button("Share File", {shareFile()})
+        Button shareDirectory = new Button("Share Directory", {shareDirectory()})
+        Button unshareDirectory = new Button("Unshare Directory",{unshareDirectory()})
+        Button close = new Button("Close", {close()})
+        
+        buttonsPanel.with { 
+            addComponent(shareFile, layoutData)
+            addComponent(shareDirectory, layoutData)
+            addComponent(unshareDirectory, layoutData)
+            addComponent(close, layoutData)
+        }
+        
+        contentPanel.addComponent(buttonsPanel, layoutData)
+        setComponent(contentPanel)
+        close.takeFocus()
+    }
+    
+    private void rowSelected() {
+        int selectedRow = table.getSelectedRow()
+        def row = model.model.getRow(selectedRow)
+        SharedFile sf = row[0].sharedFile
+        
+        Window prompt = new BasicWindow("Unshare or add comment to "+sf.getFile().getName()+" ?")
+        prompt.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(3))
+        
+        Button unshareButton = new Button("Unshare", {
+            core.eventBus.publish(new FileUnsharedEvent(unsharedFile : sf))
+            core.eventBus.publish(new UIPersistFilesEvent())
+            MessageDialog.showMessageDialog(textGUI, "File Unshared", "Unshared "+sf.getFile().getName(), MessageDialogButton.OK)
+        } )
+        Button addCommentButton = new Button("Add Comment", {
+            AddCommentView view = new AddCommentView(textGUI, core, sf, terminalSize)
+            textGUI.addWindowAndWait(view)
+        })
+        Button closeButton = new Button("Close", {prompt.close()})
+        
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        contentPanel.addComponent(unshareButton, layoutData)
+        contentPanel.addComponent(addCommentButton, layoutData)
+        contentPanel.addComponent(closeButton, layoutData)
+        
+        prompt.setComponent(contentPanel)
+        textGUI.addWindowAndWait(prompt)
+    }
+    
+    
+    private void shareFile() {
+        TerminalSize terminalSize = new TerminalSize(terminalSize.getColumns() - 10, terminalSize.getRows() - 10)
+        FileDialog fileDialog = new FileDialog("Share File", "Select a file to share", "Share", terminalSize, false, null)
+        File f = fileDialog.showDialog(textGUI)
+        f = f.getCanonicalFile()
+        core.eventBus.publish(new FileSharedEvent(file : f))
+        MessageDialog.showMessageDialog(textGUI, "File Shared", f.getName()+" has been shared", MessageDialogButton.OK)
+    }
+    
+    private void shareDirectory() {
+        String directoryName = TextInputDialog.showDialog(textGUI, "Share a directory", "Enter the directory to share", "")
+        if (directoryName == null)
+            return
+        File directory = new File(directoryName)
+        directory = directory.getCanonicalFile()
+        core.eventBus.publish(new FileSharedEvent(file : directory))
+        MessageDialog.showMessageDialog(textGUI, "Directory Shared", directory.getName()+" has been shared", MessageDialogButton.OK)
+    }
+    
+    private void unshareDirectory() {
+        String directoryName = TextInputDialog.showDialog(textGUI, "Unshare a directory", "Enter the directory to unshare", "")
+        if (directoryName == null)
+            return
+        File directory = new File(directoryName)
+        directory = directory.getCanonicalFile()
+        core.eventBus.publish(new DirectoryUnsharedEvent(directory : directory))
+        MessageDialog.showMessageDialog(textGUI, "Directory Unshared", directory.getName()+" has been unshared", MessageDialogButton.OK)
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/MainWindowView.groovy

@@ -0,0 +1,278 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalPosition
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.BorderLayout
+import com.googlecode.lanterna.gui2.Borders
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.Label
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.Panels
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.screen.Screen
+import com.googlecode.lanterna.gui2.TextBox
+import com.muwire.core.Core
+import com.muwire.core.DownloadedFile
+import com.muwire.core.connection.ConnectionEvent
+import com.muwire.core.files.FileDownloadedEvent
+import com.muwire.core.files.FileHashedEvent
+import com.muwire.core.files.FileLoadedEvent
+import com.muwire.core.files.FileUnsharedEvent
+import com.muwire.core.hostcache.HostDiscoveredEvent
+import com.muwire.core.update.UpdateAvailableEvent
+import com.muwire.core.update.UpdateDownloadedEvent
+
+import net.i2p.data.Base64
+
+class MainWindowView extends BasicWindow {
+    
+    private final Core core
+    private final TextGUI textGUI
+    private final Screen screen
+
+    private final TextBox searchTextBox
+    
+    private final DownloadsModel downloadsModel
+    private final UploadsModel uploadsModel
+    private final FilesModel filesModel
+    private final TrustModel trustModel
+    
+    private final Label connectionCount, incoming, outgoing
+    private final Label known, failing, hopeless
+    private final Label sharedFiles
+    private final Label timesBrowsed
+    private final Label updateStatus
+    
+    public MainWindowView(String title, Core core, TextGUI textGUI, Screen screen, CliSettings props) {
+        super(title);
+        
+        this.core = core
+        this.textGUI = textGUI
+        this.screen = screen
+        
+        downloadsModel = new DownloadsModel(textGUI.getGUIThread(),core, props)
+        uploadsModel = new UploadsModel(textGUI.getGUIThread(), core, props)
+        filesModel = new FilesModel(textGUI.getGUIThread(),core)
+        trustModel = new TrustModel(textGUI.getGUIThread(), core)
+        
+        setHints([Window.Hint.EXPANDED])
+        Panel contentPanel = new Panel()
+        setComponent(contentPanel)
+        
+        BorderLayout borderLayout = new BorderLayout()
+        contentPanel.setLayoutManager(borderLayout)
+        
+        Panel buttonsPanel = new Panel()
+        contentPanel.addComponent(buttonsPanel, BorderLayout.Location.TOP)
+        
+        GridLayout gridLayout = new GridLayout(7)
+        buttonsPanel.setLayoutManager(gridLayout)
+        
+        searchTextBox = new TextBox(new TerminalSize(40, 1))
+        Button searchButton = new Button("Search", { search() })
+        Button downloadsButton = new Button("Downloads", {download()})
+        Button uploadsButton = new Button("Uploads", {upload()})
+        Button filesButton = new Button("Files", { files() })
+        Button trustButton = new Button("Trust", {trust()})
+        Button quitButton = new Button("Quit", {close()})
+        
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        
+        buttonsPanel.with { 
+            addComponent(searchTextBox, layoutData)
+            addComponent(searchButton, layoutData)
+            addComponent(downloadsButton, layoutData)
+            addComponent(uploadsButton, layoutData)
+            addComponent(filesButton, layoutData)
+            addComponent(trustButton, layoutData)
+            addComponent(quitButton, layoutData)
+        }
+        
+        Panel bottomPanel = new Panel()
+        contentPanel.addComponent(bottomPanel, BorderLayout.Location.BOTTOM)
+        BorderLayout bottomLayout = new BorderLayout()
+        bottomPanel.setLayoutManager(bottomLayout)
+        
+        Label persona = new Label(core.me.getHumanReadableName())
+        bottomPanel.addComponent(persona, BorderLayout.Location.LEFT)
+        
+        
+        Panel connectionsPanel = new Panel()
+        connectionsPanel.setLayoutManager(new GridLayout(2))
+        Label connections = new Label("Connections:")
+        connectionsPanel.addComponent(connections, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER))
+        connectionCount = new Label("0")
+        connectionsPanel.addComponent(connectionCount, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER))
+        
+        bottomPanel.addComponent(connectionsPanel, BorderLayout.Location.RIGHT)
+
+        
+        Panel centralPanel = new Panel()
+        centralPanel.setLayoutManager(new GridLayout(1))
+        contentPanel.addComponent(centralPanel, BorderLayout.Location.CENTER)
+        Panel statusPanel = new Panel()
+        statusPanel.setLayoutManager(new GridLayout(2))
+        statusPanel.withBorder(Borders.doubleLine("Stats"))
+        centralPanel.addComponent(statusPanel, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, true))
+
+        incoming = new Label("0")
+        outgoing = new Label("0")
+        known = new Label("0")
+        failing = new Label("0")
+        hopeless = new Label("0")
+        sharedFiles = new Label("0")
+        timesBrowsed = new Label("0")
+        updateStatus = new Label("Unknown")
+                
+        statusPanel.with { 
+            addComponent(new Label("Incoming Connections: "), layoutData)
+            addComponent(incoming, layoutData)
+            addComponent(new Label("Outgoing Connections: "), layoutData)
+            addComponent(outgoing, layoutData)
+            addComponent(new Label("Known Hosts: "), layoutData)
+            addComponent(known, layoutData)
+            addComponent(new Label("Failing Hosts: "), layoutData)
+            addComponent(failing, layoutData)
+            addComponent(new Label("Hopeless Hosts: "), layoutData)
+            addComponent(hopeless, layoutData)
+            addComponent(new Label("Shared Files: "), layoutData)
+            addComponent(sharedFiles, layoutData)
+            addComponent(new Label("Times Browsed: "), layoutData)
+            addComponent(timesBrowsed, layoutData)
+            addComponent(new Label("Update Status: "), layoutData)
+            addComponent(updateStatus, layoutData)
+        }
+        
+        refreshStats()
+        
+        searchButton.takeFocus()
+        core.eventBus.register(ConnectionEvent.class, this)
+        core.eventBus.register(HostDiscoveredEvent.class, this)
+        core.eventBus.register(FileLoadedEvent.class, this)
+        core.eventBus.register(FileHashedEvent.class, this)
+        core.eventBus.register(FileUnsharedEvent.class, this)
+        core.eventBus.register(FileDownloadedEvent.class, this)
+        core.eventBus.register(UpdateAvailableEvent.class, this)
+        core.eventBus.register(UpdateDownloadedEvent.class, this)
+    }
+    
+    void onConnectionEvent(ConnectionEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            connectionCount.setText(String.valueOf(core.connectionManager.connections.size()))
+            refreshStats()
+        }
+    }
+    
+    void onHostDiscoveredEvent(HostDiscoveredEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            refreshStats()
+        }
+    }
+    
+    void onFileLoadedEvent(FileLoadedEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            refreshStats()
+        }
+    }
+    
+    void onFileHashedEvent(FileHashedEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            refreshStats()
+        }
+    }
+    
+    void onFileUnsharedEvent(FileUnsharedEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            refreshStats()
+        }
+    }
+    
+    void onFileDownloadedEvent(FileDownloadedEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            refreshStats()
+        }
+    }
+    
+    void onUpdateAvailableEvent(UpdateAvailableEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            String label = "$e.version is available with hash $e.infoHash"
+            updateStatus.setText(label)
+            String message = "Version $e.version is available from $e.signer, search for $e.infoHash"
+            MessageDialog.showMessageDialog(textGUI, "Update Available", message, MessageDialogButton.OK)
+        }
+    }
+    
+    void onUpdateDownloadedEvent(UpdateDownloadedEvent e) {
+        textGUI.getGUIThread().invokeLater {
+            String label = "$e.version downloaded"
+            updateStatus.setText(label)
+            String message = "Version $e.version from $e.signer has been downloaded.  You can update now."
+            MessageDialog.showMessageDialog(textGUI, "Update Available", message, MessageDialogButton.OK)
+        }
+    }
+    
+    private TerminalSize sizeForTables() {
+        TerminalSize full = screen.getTerminalSize()
+        return new TerminalSize(full.getColumns(), full.getRows() - 10)
+    }
+    
+    private void search() {
+        String query = searchTextBox.getText()
+        query = query.trim()
+        if (query.length() == 0)
+            return
+        if (query.length() > 128)
+            query = query.substring(0, 128)
+        
+        SearchModel model = new SearchModel(query, core, textGUI.getGUIThread())
+        textGUI.addWindowAndWait(new SearchView(model,core, textGUI, sizeForTables()))
+    }
+    
+    
+    private void download() {
+        textGUI.addWindowAndWait(new DownloadsView(core, downloadsModel, textGUI, sizeForTables()))
+    }
+    
+    private void upload() {
+        textGUI.addWindowAndWait(new UploadsView(uploadsModel, sizeForTables()))
+    }
+    
+    private void files() {
+        textGUI.addWindowAndWait(new FilesView(filesModel, textGUI, core, sizeForTables()))
+    }
+    
+    private void trust() {
+        textGUI.addWindowAndWait(new TrustView(trustModel, textGUI, core, sizeForTables()))
+    }
+    
+    private void refreshStats() {
+        int inCon = 0
+        int outCon = 0
+        core.connectionManager.getConnections().each { 
+            if (it.isIncoming())
+                inCon++
+            else
+                outCon++
+        }
+        int knownHosts = core.hostCache.hosts.size()
+        int failingHosts = core.hostCache.countFailingHosts()
+        int hopelessHosts = core.hostCache.countHopelessHosts()
+        int shared = core.fileManager.fileToSharedFile.size()
+        int browsed = core.connectionAcceptor.browsed
+        
+        incoming.setText(String.valueOf(inCon))
+        outgoing.setText(String.valueOf(outCon))
+        known.setText(String.valueOf(knownHosts))
+        failing.setText(String.valueOf(failingHosts))
+        hopeless.setText(String.valueOf(hopelessHosts))
+        sharedFiles.setText(String.valueOf(shared))
+        timesBrowsed.setText(String.valueOf(browsed))
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/PersonaWrapper.groovy

@@ -0,0 +1,15 @@
+package com.muwire.clilanterna
+
+import com.muwire.core.Persona
+
+class PersonaWrapper {
+    private final Persona persona
+    PersonaWrapper(Persona persona) {
+        this.persona = persona
+    }
+    
+    @Override
+    public String toString() {
+        persona.getHumanReadableName()
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/ResultsModel.groovy

@@ -0,0 +1,28 @@
+package com.muwire.clilanterna
+
+import com.muwire.core.search.UIResultBatchEvent
+import com.muwire.core.search.UIResultEvent
+
+import net.i2p.data.Base64
+import net.i2p.data.DataHelper
+
+import com.googlecode.lanterna.gui2.table.TableModel
+
+class ResultsModel {
+    private final UIResultBatchEvent results
+    final TableModel model
+    final Map<String, UIResultEvent> rootToResult = new HashMap<>()
+    
+    ResultsModel(UIResultBatchEvent results) {
+        this.results = results
+        model = new TableModel("Name","Size","Hash","Sources","Comment")
+        results.results.each { 
+            String size = DataHelper.formatSize2Decimal(it.size, false) + "B"
+            String infoHash = Base64.encode(it.infohash.getRoot())
+            String sources = String.valueOf(it.sources.size())
+            String comment = String.valueOf(it.comment != null)
+            model.addRow(it.name, size, infoHash, sources, comment)
+            rootToResult.put(infoHash, it)
+        }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/ResultsView.groovy

@@ -0,0 +1,94 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.table.Table
+
+import com.muwire.core.Core
+import com.muwire.core.download.UIDownloadEvent
+import com.muwire.core.search.UIResultEvent
+
+class ResultsView extends BasicWindow {
+    
+    private final ResultsModel model
+    private final TextGUI textGUI
+    private final Core core
+    private final Table table
+    private final TerminalSize terminalSize
+    
+    ResultsView(ResultsModel model, Core core, TextGUI textGUI, TerminalSize terminalSize) {
+        super(model.results.results[0].sender.getHumanReadableName() + " Results")
+        this.model = model
+        this.core = core
+        this.textGUI = textGUI
+        this.terminalSize = terminalSize
+        
+        setHints([Window.Hint.EXPANDED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        
+        table = new Table("Name","Size","Hash","Sources","Comment")
+        table.setCellSelection(false)
+        table.setSelectAction({rowSelected()})
+        table.setTableModel(model.model)
+        table.setVisibleRows(terminalSize.getRows())
+        contentPanel.addComponent(table, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false))
+        
+        Button closeButton = new Button("Close", {close()})
+        contentPanel.addComponent(closeButton, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false))
+        
+        setComponent(contentPanel)
+        closeButton.takeFocus()    
+    }
+    
+    private void rowSelected() {
+        int selectedRow = table.getSelectedRow()
+        def rows = model.model.getRow(selectedRow)
+        boolean comment = Boolean.parseBoolean(rows[4])
+        if (comment) {
+            Window prompt = new BasicWindow("Download Or View Comment")
+            prompt.setHints([Window.Hint.CENTERED])
+            Panel contentPanel = new Panel()
+            contentPanel.setLayoutManager(new GridLayout(3))
+            Button downloadButton = new Button("Download", {download(rows[2])})
+            Button viewButton = new Button("View Comment", {viewComment(rows[2])})
+            Button closeButton = new Button("Cancel", {prompt.close()})
+            
+            LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+            contentPanel.addComponent(downloadButton, layoutData)
+            contentPanel.addComponent(viewButton, layoutData)
+            contentPanel.addComponent(closeButton, layoutData)
+            prompt.setComponent(contentPanel)
+            downloadButton.takeFocus()
+            textGUI.addWindowAndWait(prompt)    
+        } else {
+            download(rows[2])
+        }
+
+    }
+    
+    private void download(String infohash) {
+        UIResultEvent result = model.rootToResult[infohash]
+        def file = new File(core.muOptions.downloadLocation, result.name)
+        
+        core.eventBus.publish(new UIDownloadEvent(result : [result], sources : result.sources,
+            target : file, sequential : false))
+        MessageDialog.showMessageDialog(textGUI, "Download Started", "Started download of "+result.name, MessageDialogButton.OK)
+    }
+    
+    private void viewComment(String infohash) {
+        UIResultEvent result = model.rootToResult[infohash]
+        ViewCommentView view = new ViewCommentView(result, terminalSize)
+        textGUI.addWindowAndWait(view)
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/SearchModel.groovy

@@ -0,0 +1,75 @@
+package com.muwire.clilanterna
+
+import com.muwire.core.Core
+import com.muwire.core.Persona
+import com.muwire.core.SplitPattern
+import com.muwire.core.search.QueryEvent
+import com.muwire.core.search.SearchEvent
+import com.muwire.core.search.UIResultBatchEvent
+import com.muwire.core.search.UIResultEvent
+
+import net.i2p.data.Base64
+
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.table.TableModel
+class SearchModel {
+    private final TextGUIThread guiThread
+    private final String query
+    private final Core core
+    final TableModel model
+        
+    private final Map<Persona, UIResultBatchEvent> resultsPerSender = new HashMap<>()
+    
+    SearchModel(String query, Core core, TextGUIThread guiThread) {
+        this.query = query
+        this.core = core
+        this.guiThread = guiThread
+        this.model = new TableModel("Sender","Results","Browse","Trust")
+        core.eventBus.register(UIResultBatchEvent.class, this)
+        
+        
+        boolean hashSearch = false
+        byte [] root = null
+        if (query.length() == 44 && query.indexOf(" ") < 0) {
+            try {
+                root = Base64.decode(query)
+                hashSearch = true
+            } catch (Exception e) {
+                // not  hash search
+            }
+        }
+        
+        def searchEvent
+        if (hashSearch) {
+            searchEvent = new SearchEvent(searchHash : root, uuid : UUID.randomUUID(), oobInfohash : true, compressedResults : true)
+        } else {
+            def replaced = query.toLowerCase().trim().replaceAll(SplitPattern.SPLIT_PATTERN, " ")
+            def terms = replaced.split(" ")
+            def nonEmpty = []
+            terms.each { if (it.length() > 0) nonEmpty << it }
+            searchEvent = new SearchEvent(searchTerms : nonEmpty, uuid : UUID.randomUUID(), oobInfohash: true,
+            searchComments : core.muOptions.searchComments, compressedResults : true)
+        }
+        boolean firstHop = core.muOptions.allowUntrusted || core.muOptions.searchExtraHop
+        core.eventBus.publish(new QueryEvent(searchEvent : searchEvent, firstHop : firstHop,
+            replyTo: core.me.destination, receivedOn: core.me.destination,
+            originator : core.me))
+    }
+    
+    void unregister() {
+        core.eventBus.unregister(UIResultBatchEvent.class, this)
+    }
+    
+    void onUIResultBatchEvent(UIResultBatchEvent e) {
+        guiThread.invokeLater {
+            Persona sender = e.results[0].sender
+
+            resultsPerSender.put(sender, e)
+
+            String browse = String.valueOf(e.results[0].browse)
+            String results = String.valueOf(e.results.length)
+            String trust = core.trustService.getLevel(sender.destination).toString()
+            model.addRow([new PersonaWrapper(sender), results, browse, trust])
+        }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/SearchView.groovy

@@ -0,0 +1,113 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.table.Table
+
+import com.muwire.core.Core
+import com.muwire.core.Persona
+import com.muwire.core.trust.TrustEvent
+import com.muwire.core.trust.TrustLevel
+
+class SearchView extends BasicWindow {
+    private final Core core
+    private final SearchModel model
+    private final Table table
+    private final TextGUI textGUI
+    private final TerminalSize terminalSize
+    
+    SearchView(SearchModel model, Core core, TextGUI textGUI, TerminalSize terminalSize) {
+        super(model.query)
+        this.core = core
+        this.model = model
+        this.textGUI = textGUI
+        this.terminalSize = terminalSize
+        
+        setHints([Window.Hint.EXPANDED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+    
+        table = new Table("Sender","Results","Browse","Trust") 
+        table.setCellSelection(false)
+        table.setSelectAction({rowSelected()})
+        table.setTableModel(model.model)   
+        table.setVisibleRows(terminalSize.getRows())
+        contentPanel.addComponent(table, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false))
+        
+        Button closeButton = new Button("Close", {
+            model.unregister()
+            close()
+        })
+        contentPanel.addComponent(closeButton, GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false))
+        
+        setComponent(contentPanel)
+        closeButton.takeFocus()
+    }
+    
+    private void rowSelected() {
+        int selectedRow = table.getSelectedRow()
+        def rows = model.model.getRow(selectedRow)
+        Persona persona = rows[0].persona
+        boolean browse = Boolean.parseBoolean(rows[2])
+        Window prompt = new BasicWindow("Show Or Browse "+rows[0]+"?")
+        prompt.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(6))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        Button showResults = new Button("Show Results", {
+            showResults(persona)
+        })
+        Button browseHost = new Button("Browse Host", {
+            BrowseModel model = new BrowseModel(persona, core, textGUI.getGUIThread())
+            BrowseView view = new BrowseView(model, textGUI, core, terminalSize)
+            textGUI.addWindowAndWait(view)
+        }) 
+        Button trustHost = new Button("Trust",{
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.TRUSTED))
+            MessageDialog.showMessageDialog(textGUI, "Marked Trusted", persona.getHumanReadableName() + " has been marked trusted",
+                    MessageDialogButton.OK)
+        })
+        Button neutralHost = new Button("Neutral",{
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.NEUTRAL))
+            MessageDialog.showMessageDialog(textGUI, "Marked Neutral", persona.getHumanReadableName() + " has been marked neutral",
+                    MessageDialogButton.OK)
+        })
+        Button distrustHost = new Button("Distrust", {
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.DISTRUSTED))
+            MessageDialog.showMessageDialog(textGUI, "Marked Distrusted", persona.getHumanReadableName() + " has been marked distrusted",
+                    MessageDialogButton.OK)
+        })
+        Button closePrompt = new Button("Close", {prompt.close()})
+
+        contentPanel.with {
+            addComponent(showResults, layoutData)
+            if (browse)
+                addComponent(browseHost, layoutData)
+            addComponent(trustHost, layoutData)
+            addComponent(neutralHost, layoutData)
+            addComponent(distrustHost, layoutData)
+            addComponent(closePrompt, layoutData)
+        }
+
+        prompt.setComponent(contentPanel)
+        showResults.takeFocus()
+        textGUI.addWindowAndWait(prompt)
+    }
+    
+    private void showResults(Persona persona) {
+        def results = model.resultsPerSender.get(persona)
+        ResultsModel resultsModel = new ResultsModel(results)
+        ResultsView resultsView = new ResultsView(resultsModel, core, textGUI, terminalSize)
+        textGUI.addWindowAndWait(resultsView)
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/SharedFileWrapper.groovy

@@ -0,0 +1,16 @@
+package com.muwire.clilanterna
+
+import com.muwire.core.SharedFile
+
+class SharedFileWrapper {
+    private final SharedFile sharedFile
+    
+    SharedFileWrapper(SharedFile sharedFile) {
+        this.sharedFile = sharedFile
+    }
+    
+    @Override
+    public String toString() {
+        sharedFile.getCachedPath()
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/TrustListModel.groovy

@@ -0,0 +1,49 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.table.TableModel
+import com.muwire.core.Core
+import com.muwire.core.trust.RemoteTrustList
+import com.muwire.core.trust.TrustEvent
+
+class TrustListModel {
+    private final TextGUIThread guiThread
+    private final RemoteTrustList trustList
+    private final Core core
+    private final TableModel trustedTableModel, distrustedTableModel
+    
+    TrustListModel(RemoteTrustList trustList, Core core) {
+        this.trustList = trustList
+        this.core = core
+        
+        trustedTableModel = new TableModel("Trusted User","Your Trust")
+        distrustedTableModel = new TableModel("Distrusted User", "Your Trust")
+        refreshModels()
+        
+        core.eventBus.register(TrustEvent.class, this)
+    }
+    
+    void onTrustEvent(TrustEvent e) {
+        guiThread.invokeLater {
+            refreshModels()
+        }
+    }
+    
+    private void refreshModels() {
+        int trustRows = trustedTableModel.getRowCount()
+        trustRows.times { trustedTableModel.removeRow(0) }
+        int distrustRows = distrustedTableModel.getRowCount()
+        distrustRows.times { distrustedTableModel.removeRow(0) }
+        
+        trustList.good.each { 
+            trustedTableModel.addRow(new PersonaWrapper(it), core.trustService.getLevel(it.destination))
+        }
+        trustList.bad.each { 
+            distrustedTableModel.addRow(new PersonaWrapper(it), core.trustService.getLevel(it.destination))
+        }
+    }
+    
+    void unregister() {
+        core.eventBus.unregister(TrustEvent.class, this)
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/TrustListView.groovy

@@ -0,0 +1,118 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.Label
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.table.Table
+import com.muwire.core.Core
+import com.muwire.core.Persona
+import com.muwire.core.trust.TrustEvent
+import com.muwire.core.trust.TrustLevel
+
+class TrustListView extends BasicWindow {
+    private final TrustListModel model
+    private final TextGUI textGUI
+    private final Core core
+    private final TerminalSize terminalSize
+    private final Table trusted, distrusted
+    
+    TrustListView(TrustListModel model, TextGUI textGUI, Core core, TerminalSize terminalSize) {
+        this.model = model
+        this.textGUI = textGUI
+        this.core = core
+        this.terminalSize = terminalSize
+        
+        int tableSize = terminalSize.getRows() - 10
+        
+        setHints([Window.Hint.EXPANDED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false)
+        
+        Label nameLabel = new Label("Trust list for "+model.trustList.persona.getHumanReadableName())
+        Label lastUpdatedLabel = new Label("Last updated "+new Date(model.trustList.timestamp))
+        contentPanel.addComponent(nameLabel, layoutData)
+        contentPanel.addComponent(lastUpdatedLabel, layoutData)
+        
+        
+        Panel topPanel = new Panel()
+        topPanel.setLayoutManager(new GridLayout(2))
+        
+        trusted = new Table("Trusted User","Your Trust")
+        trusted.with {
+            setCellSelection(false)
+            setTableModel(model.trustedTableModel)
+            setVisibleRows(tableSize)
+        }
+        trusted.setSelectAction({ actionsForUser(true) })
+        topPanel.addComponent(trusted, layoutData)
+        
+        distrusted = new Table("Distrusted User", "Your Trust")
+        distrusted.with { 
+            setCellSelection(false)
+            setTableModel(model.distrustedTableModel)
+            setVisibleRows(tableSize)
+        }
+        distrusted.setSelectAction({actionsForUser(false)}) 
+        topPanel.addComponent(distrusted, layoutData)
+
+        Button closeButton = new Button("Close",{close()})
+        
+        contentPanel.addComponent(topPanel, layoutData)
+        contentPanel.addComponent(closeButton, layoutData)
+        
+        setComponent(contentPanel)        
+    }
+
+    private void actionsForUser(boolean trustedUser) {
+        def table = trustedUser ? trusted : distrusted
+        def model = trustedUser ? model.trustedTableModel : model.distrustedTableModel
+        
+        int selectedRow = table.getSelectedRow()
+        def row = model.getRow(selectedRow)
+        
+        Persona persona = row[0].persona
+        
+        Window prompt = new BasicWindow("Actions for "+persona.getHumanReadableName())
+        prompt.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(4))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        
+        Button trustButton = new Button("Trust",{
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.TRUSTED))
+            MessageDialog.showMessageDialog(textGUI, "Marked Trusted", persona.getHumanReadableName() + "has been marked trusted",
+                MessageDialogButton.OK)
+        })
+        Button neutralButton = new Button("Neutral",{
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.NEUTRAL))
+            MessageDialog.showMessageDialog(textGUI, "Marked Neutral", persona.getHumanReadableName() + "has been marked neutral",
+                MessageDialogButton.OK)
+        })
+        Button distrustButton = new Button("Distrust",{
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.DISTRUSTED))
+            MessageDialog.showMessageDialog(textGUI, "Marked Distrusted", persona.getHumanReadableName() + "has been marked distrusted",
+                MessageDialogButton.OK)
+        })
+        Button closeButton = new Button("Close",{prompt.close()})
+        
+        contentPanel.with { 
+            addComponent(trustButton,layoutData)
+            addComponent(neutralButton, layoutData)
+            addComponent(distrustButton, layoutData)
+            addComponent(closeButton, layoutData)
+        }
+        prompt.setComponent(contentPanel)
+        textGUI.addWindowAndWait(prompt)
+    }    
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/TrustListWrapper.groovy

@@ -0,0 +1,15 @@
+package com.muwire.clilanterna
+
+import com.muwire.core.trust.RemoteTrustList
+
+class TrustListWrapper {
+    private final RemoteTrustList trustList
+    TrustListWrapper(RemoteTrustList trustList) {
+        this.trustList = trustList
+    }
+    
+    @Override
+    public String toString() {
+        trustList.persona.getHumanReadableName()
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/TrustModel.groovy

@@ -0,0 +1,78 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.table.TableModel
+import com.muwire.core.Core
+import com.muwire.core.files.AllFilesLoadedEvent
+import com.muwire.core.trust.TrustEvent
+import com.muwire.core.trust.TrustSubscriptionEvent
+import com.muwire.core.trust.TrustSubscriptionUpdatedEvent
+
+class TrustModel {
+    private final TextGUIThread guiThread
+    private final Core core
+    private final TableModel modelTrusted, modelDistrusted, modelSubscriptions
+    
+    TrustModel(TextGUIThread guiThread, Core core) {
+        this.guiThread = guiThread
+        this.core = core
+        
+        modelTrusted = new TableModel("Trusted Users")
+        modelDistrusted = new TableModel("Distrusted Users")
+        modelSubscriptions = new TableModel("Name","Trusted","Distrusted","Status","Last Updated")
+        
+        core.eventBus.register(TrustEvent.class, this)
+        core.eventBus.register(AllFilesLoadedEvent.class, this)
+        core.eventBus.register(TrustSubscriptionUpdatedEvent.class, this)
+        
+    }
+    
+    void onTrustEvent(TrustEvent e) {
+        guiThread.invokeLater {
+            refreshModels()
+        }
+    }
+    
+    void onTrustSubscriptionUpdatedEvent(TrustSubscriptionUpdatedEvent e) {
+        guiThread.invokeLater {
+            refreshModels()
+        }
+    }
+    
+    void onAllFilesLoadedEvent(AllFilesLoadedEvent e) {
+        guiThread.invokeLater {
+            refreshModels()
+        }
+        core.muOptions.trustSubscriptions.each {
+            core.eventBus.publish(new TrustSubscriptionEvent(persona : it, subscribe : true))
+        }
+    }
+    
+    private void refreshModels() {
+        int trustedRows = modelTrusted.getRowCount()
+        trustedRows.times { modelTrusted.removeRow(0) }
+        int distrustedRows = modelDistrusted.getRowCount()
+        distrustedRows.times { modelDistrusted.removeRow(0) }
+        int subsRows = modelSubscriptions.getRowCount()
+        subsRows.times { modelSubscriptions.removeRow(0) }
+        
+        core.trustService.good.values().each { 
+            modelTrusted.addRow(new PersonaWrapper(it))
+        }
+        
+        core.trustService.bad.values().each { 
+            modelDistrusted.addRow(new PersonaWrapper(it))
+        }
+        
+        core.trustSubscriber.remoteTrustLists.values().each { 
+            def name = new TrustListWrapper(it)
+            String trusted = String.valueOf(it.good.size())
+            String distrusted = String.valueOf(it.bad.size())
+            String status = it.status
+            String lastUpdated = it.timestamp == 0 ? "Never" : new Date(it.timestamp)
+            
+            modelSubscriptions.addRow(name, trusted, distrusted, status, lastUpdated)
+        }
+        
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/TrustView.groovy

@@ -0,0 +1,204 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.dialogs.MessageDialog
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogBuilder
+import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.Label
+import com.googlecode.lanterna.gui2.table.Table
+import com.muwire.core.Core
+import com.muwire.core.Persona
+import com.muwire.core.trust.TrustEvent
+import com.muwire.core.trust.TrustLevel
+import com.muwire.core.trust.TrustSubscriptionEvent
+
+class TrustView extends BasicWindow {
+    private final TrustModel model
+    private final TextGUI textGUI
+    private final Core core
+    private final TerminalSize terminalSize
+    private final Table trusted, distrusted, subscriptions
+    
+    TrustView(TrustModel model, TextGUI textGUI, Core core, TerminalSize terminalSize) {
+        this.model = model
+        this.textGUI = textGUI
+        this.core = core
+        this.terminalSize = terminalSize
+        
+        int tableSize = (terminalSize.getRows() / 2 - 10).toInteger()
+        
+        setHints([Window.Hint.EXPANDED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false)
+        
+        Panel topPanel = new Panel()
+        topPanel.setLayoutManager(new GridLayout(2))
+        
+        trusted = new Table("Trusted Users")
+        trusted.setCellSelection(false)
+        trusted.setSelectAction({trustedActions()})
+        trusted.setTableModel(model.modelTrusted)
+        trusted.setVisibleRows(tableSize)
+        topPanel.addComponent(trusted, layoutData)
+        
+        distrusted = new Table("Distrusted users")
+        distrusted.setCellSelection(false)
+        distrusted.setSelectAction({distrustedActions()})
+        distrusted.setTableModel(model.modelDistrusted)
+        distrusted.setVisibleRows(tableSize)
+        topPanel.addComponent(distrusted, layoutData)
+        
+        Panel bottomPanel = new Panel()
+        bottomPanel.setLayoutManager(new GridLayout(1))
+        
+        Label tableName = new Label("Trust List Subscriptions")
+        bottomPanel.addComponent(tableName, layoutData)
+        
+        subscriptions = new Table("Name","Trusted","Distrusted","Status","Last Updated")
+        subscriptions.setCellSelection(false)
+        subscriptions.setSelectAction({trustListActions()})
+        subscriptions.setTableModel(model.modelSubscriptions)
+        subscriptions.setVisibleRows(tableSize)
+        bottomPanel.addComponent(subscriptions, layoutData)
+        
+        Button closeButton = new Button("Close", {close()})
+        
+        contentPanel.addComponent(topPanel, layoutData)
+        contentPanel.addComponent(bottomPanel, layoutData)
+        contentPanel.addComponent(closeButton, layoutData)
+        
+        setComponent(contentPanel)
+    }
+    
+    private void trustedActions() {
+        int selectedRow = trusted.getSelectedRow()
+        def row = model.modelTrusted.getRow(selectedRow)
+        Persona persona = row[0].persona
+        
+        Window prompt = new BasicWindow("Change Trust For "+persona.getHumanReadableName())
+        prompt.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(4))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        
+        Button subscribe = new Button("Subscribe", {
+            core.muOptions.trustSubscriptions.add(persona)
+            saveMuSettings()
+            core.eventBus.publish(new TrustSubscriptionEvent(persona : persona, subscribe : true))
+            MessageDialog.showMessageDialog(textGUI, "Subscribed", "Subscribed from trust list of " + persona.getHumanReadableName(),
+                MessageDialogButton.OK)
+           model.refreshModels()
+            
+        })
+        Button markNeutral = new Button("Mark Neutral", {
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.NEUTRAL))
+            MessageDialog.showMessageDialog(textGUI, "Marked Neutral", persona.getHumanReadableName() + "has been marked neutral",
+                 MessageDialogButton.OK)  
+        })
+        Button markDistrusted = new Button("Mark Distrusted", {
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.DISTRUSTED))
+            MessageDialog.showMessageDialog(textGUI, "Marked Distrusted", persona.getHumanReadableName() + "has been marked distrusted",
+                 MessageDialogButton.OK)
+        })
+        Button closeButton = new Button("Close", {prompt.close()})
+        contentPanel.with {
+            addComponent(subscribe, layoutData) 
+            addComponent(markNeutral, layoutData)
+            addComponent(markDistrusted, layoutData)
+            addComponent(closeButton, layoutData)
+        }
+        prompt.setComponent(contentPanel)
+        textGUI.addWindowAndWait(prompt)
+    }
+    
+    private void distrustedActions() {
+        int selectedRow = trusted.getSelectedRow()
+        def row = model.modelDistrusted.getRow(selectedRow)
+        Persona persona = row[0].persona
+        
+        Window prompt = new BasicWindow("Change Trust For "+persona.getHumanReadableName())
+        prompt.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(3))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        
+        Button markNeutral = new Button("Mark Neutral", {
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.NEUTRAL))
+            MessageDialog.showMessageDialog(textGUI, "Marked Neutral", persona.getHumanReadableName() + "has been marked neutral",
+                 MessageDialogButton.OK)
+        })
+        Button markDistrusted = new Button("Mark Trusted", {
+            core.eventBus.publish(new TrustEvent(persona : persona, level : TrustLevel.TRUSTED))
+            MessageDialog.showMessageDialog(textGUI, "Marked Trusted", persona.getHumanReadableName() + "has been marked trusted",
+                 MessageDialogButton.OK)
+        })
+        Button closeButton = new Button("Close", {prompt.close()})
+        contentPanel.with {
+            addComponent(markDistrusted, layoutData)
+            addComponent(markNeutral, layoutData)
+            addComponent(closeButton, layoutData)
+        }
+        prompt.setComponent(contentPanel)
+        textGUI.addWindowAndWait(prompt)
+    }
+    
+    private void trustListActions() {
+        int selectedRow = subscriptions.getSelectedRow()
+        def row = model.modelSubscriptions.getRow(selectedRow)
+        
+        def trustList = row[0].trustList
+        Persona persona = trustList.persona
+        
+        Window prompt = new BasicWindow("Trust List Actions")
+        prompt.setHints([Window.Hint.CENTERED])
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(4))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+        
+        Button reviewButton = new Button("Review",{review(trustList)})
+        Button updateButton = new Button("Update",{
+            core.eventBus.publish(new TrustSubscriptionEvent(persona : persona, subscribe : true))
+            MessageDialog.showMessageDialog(textGUI, "Updating...", "Trust list will update soon", MessageDialogButton.OK)
+        })
+        Button unsubscribeButton = new Button("Unsubscribe", {
+            core.muOptions.trustSubscriptions.remove(persona)
+            saveMuSettings()
+            core.eventBus.publish(new TrustSubscriptionEvent(persona : persona, subscribe : false))
+            MessageDialog.showMessageDialog(textGUI, "Unsubscribed", "Unsubscribed from trust list of " + persona.getHumanReadableName(),
+                 MessageDialogButton.OK)
+            model.refreshModels()
+        })
+        Button closeButton = new Button("Close", {prompt.close()})
+        
+        contentPanel.with { 
+            addComponent(reviewButton, layoutData)
+            addComponent(updateButton, layoutData)
+            addComponent(unsubscribeButton, layoutData)
+            addComponent(closeButton, layoutData)
+        }
+        prompt.setComponent(contentPanel)
+        textGUI.addWindowAndWait(prompt)
+    }
+    
+    private void review(def trustList) {
+        TrustListModel model = new TrustListModel(trustList, core)
+        TrustListView view = new TrustListView(model, textGUI, core, terminalSize)
+        textGUI.addWindowAndWait(view)
+        model.unregister()
+    }
+    
+    private void saveMuSettings() {
+        File settingsFile = new File(core.home,"MuWire.properties")
+        settingsFile.withOutputStream { core.muOptions.write(it) }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/UploadsModel.groovy

@@ -0,0 +1,107 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.gui2.TextGUIThread
+import com.googlecode.lanterna.gui2.table.TableModel
+
+import com.muwire.core.Core
+import com.muwire.core.upload.UploadEvent
+import com.muwire.core.upload.UploadFinishedEvent
+import com.muwire.core.upload.Uploader
+
+import net.i2p.data.DataHelper
+
+class UploadsModel {
+    private final TextGUIThread guiThread
+    private final Core core
+    private CliSettings props
+    private final List<UploaderWrapper> uploaders = new ArrayList<>()
+    private final TableModel model = new TableModel("Name","Progress","Downloader","Remote Pieces", "Speed")
+    
+    UploadsModel(TextGUIThread guiThread, Core core, CliSettings props) {
+        this.guiThread = guiThread
+        this.core = core
+        this.props = props
+        
+        core.eventBus.register(UploadEvent.class, this)
+        core.eventBus.register(UploadFinishedEvent.class, this)
+        
+        Timer timer = new Timer(true)
+        Runnable refreshModel = {refreshModel()}
+        timer.schedule({
+            guiThread.invokeLater(refreshModel)
+        } as TimerTask, 1000, 1000)
+        
+    }
+    
+    void onUploadEvent(UploadEvent e) {
+        guiThread.invokeLater {
+            UploaderWrapper found = null
+            uploaders.each { 
+                if (it.uploader == e.uploader) {
+                    found = it
+                    return
+                }
+            }
+            if (found != null) {
+                found.uploader = e.uploader
+                found.finished = false
+            } else
+                uploaders << new UploaderWrapper(uploader : e.uploader)
+        }
+    }
+    
+    void onUploadFinishedEvent(UploadFinishedEvent e) {
+        guiThread.invokeLater {
+            uploaders.each { 
+                if (it.uploader == e.uploader) {
+                    it.finished = true
+                    return
+                }
+            }
+        }
+    }
+    
+    private void refreshModel() {
+        int uploadersSize = model.getRowCount()
+        uploadersSize.times { model.removeRow(0) }
+
+        if (props.clearUploads) {
+            uploaders.removeAll { it.finished }
+        }
+                
+        uploaders.each { 
+            String name = it.uploader.getName()
+            int percent = it.uploader.getProgress()
+            String percentString = "$percent% of piece".toString()
+            String downloader = it.uploader.getDownloader()
+            
+            int pieces = it.uploader.getTotalPieces()
+            int done = it.uploader.getDonePieces()
+            if (percent == 100)
+                done++
+            int percentTotal = -1
+            if (pieces != 0)
+                percentTotal = (done * 100) / pieces
+            long size = it.uploader.getTotalSize()
+            String totalSize = ""
+            if (size > 0)
+                totalSize = " of " + DataHelper.formatSize2Decimal(size, false) + "B"
+            String remotePieces = String.format("%02d", percentTotal) + "% ${totalSize} ($done/$pieces) pcs".toString()
+            
+            String speed = DataHelper.formatSize2Decimal(it.uploader.speed(), false) + "B/sec"
+            
+            
+            model.addRow([name, percentString, downloader, remotePieces, speed])
+        }
+    }
+    
+    private static class UploaderWrapper {
+        Uploader uploader
+        boolean finished
+        
+        @Override
+        public String toString() {
+            uploader.getName()
+        }
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/UploadsView.groovy

@@ -0,0 +1,49 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextGUI
+import com.googlecode.lanterna.gui2.Window
+import com.googlecode.lanterna.gui2.table.Table
+
+class UploadsView extends BasicWindow {
+    private final UploadsModel model
+    private final Table table
+    
+    UploadsView(UploadsModel model, TerminalSize terminalSize) {
+        this.model = model
+        
+        setHints([Window.Hint.EXPANDED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER, true, false)
+        
+        table = new Table("Name","Progress","Downloader","Remote Pieces","Speed")
+        table.setCellSelection(false)
+        table.setTableModel(model.model)
+        table.setVisibleRows(terminalSize.getRows())
+        contentPanel.addComponent(table, layoutData)
+
+        Panel buttonsPanel = new Panel()
+        buttonsPanel.setLayoutManager(new GridLayout(2))
+        
+        Button clearDoneButton = new Button("Clear Finished",{
+            model.uploaders.removeAll { it.finished }
+        })        
+        Button closeButton = new Button("Close",{close()})
+        
+        buttonsPanel.addComponent(clearDoneButton, layoutData)
+        buttonsPanel.addComponent(closeButton, layoutData)
+        
+        contentPanel.addComponent(buttonsPanel, layoutData)
+        
+        setComponent(contentPanel)
+        closeButton.takeFocus()
+    }
+}

cli-lanterna/src/main/groovy/com/muwire/clilanterna/ViewCommentView.groovy

@@ -0,0 +1,39 @@
+package com.muwire.clilanterna
+
+import com.googlecode.lanterna.TerminalSize
+import com.googlecode.lanterna.gui2.BasicWindow
+import com.googlecode.lanterna.gui2.Button
+import com.googlecode.lanterna.gui2.GridLayout
+import com.googlecode.lanterna.gui2.GridLayout.Alignment
+import com.googlecode.lanterna.gui2.LayoutData
+import com.googlecode.lanterna.gui2.Panel
+import com.googlecode.lanterna.gui2.TextBox
+import com.googlecode.lanterna.gui2.Window
+import com.muwire.core.SharedFile
+import com.muwire.core.search.UIResultEvent
+import com.muwire.core.util.DataUtil
+
+import net.i2p.data.Base64
+
+class ViewCommentView extends BasicWindow {
+    private final TextBox textBox
+    private final LayoutData layoutData = GridLayout.createLayoutData(Alignment.CENTER, Alignment.CENTER)
+    
+    ViewCommentView(UIResultEvent result, TerminalSize terminalSize) {
+        super("View Comments For "+result.getName())
+        
+        setHints([Window.Hint.CENTERED])
+        
+        Panel contentPanel = new Panel()
+        contentPanel.setLayoutManager(new GridLayout(1))
+        
+        TerminalSize boxSize = new TerminalSize((terminalSize.getColumns() / 2).toInteger(), (terminalSize.getRows() / 2).toInteger())
+        textBox = new TextBox(boxSize, result.comment, TextBox.Style.MULTI_LINE)
+        contentPanel.addComponent(textBox, layoutData)
+        
+        Button closeButton = new Button("Close", {close()})
+        contentPanel.addComponent(closeButton, layoutData)
+        
+        setComponent(contentPanel)
+    }
+}

cli/src/main/groovy/com/muwire/cli/Cli.groovy

@@ -4,6 +4,7 @@ import java.util.concurrent.CountDownLatch
 
 import com.muwire.core.Core
 import com.muwire.core.MuWireSettings
+import com.muwire.core.UILoadedEvent
 import com.muwire.core.connection.ConnectionAttemptStatus
 import com.muwire.core.connection.ConnectionEvent
 import com.muwire.core.connection.DisconnectionEvent
@@ -15,66 +16,66 @@ import com.muwire.core.upload.UploadEvent
 import com.muwire.core.upload.UploadFinishedEvent
 
 class Cli {
-    
+
     public static void main(String[] args) {
         def home = System.getProperty("user.home") + File.separator + ".MuWire"
         home = new File(home)
         if (!home.exists())
             home.mkdirs()
-        
+
         def propsFile = new File(home,"MuWire.properties")
         if (!propsFile.exists()) {
             println "create props file ${propsFile.getAbsoluteFile()} before launching MuWire"
             System.exit(1)
         }
-        
+
         def props = new Properties()
         propsFile.withInputStream { props.load(it) }
         props = new MuWireSettings(props)
-        
-        Core core 
+
+        Core core
         try {
-            core = new Core(props, home, "0.2.5")
+            core = new Core(props, home, "0.5.3")
         } catch (Exception bad) {
             bad.printStackTrace(System.out)
             println "Failed to initialize core, exiting"
             System.exit(1)
         }
 
-                
-        
-        
+
+
+
         def filesList
         if (args.length == 0) {
             println "Enter a file containing list of files to share"
             def reader = new BufferedReader(new InputStreamReader(System.in))
             filesList = reader.readLine()
-        } else 
+        } else
             filesList = args[0]
-        
+
         Thread.sleep(1000)
         println "loading shared files from $filesList"
-        
+
         // listener for shared files
         def sharedListener = new SharedListener()
         core.eventBus.register(FileHashedEvent.class, sharedListener)
         core.eventBus.register(FileLoadedEvent.class, sharedListener)
-        
+
         // for connections
         def connectionsListener = new ConnectionListener()
         core.eventBus.register(ConnectionEvent.class, connectionsListener)
         core.eventBus.register(DisconnectionEvent.class, connectionsListener)
-        
+
         // for uploads
         def uploadsListener = new UploadsListener()
         core.eventBus.register(UploadEvent.class, uploadsListener)
         core.eventBus.register(UploadFinishedEvent.class, uploadsListener)
-        
+
         Timer timer = new Timer("status-printer", true)
         timer.schedule({
-            println "Connections $connectionsListener.connections Uploads $uploadsListener.uploads Shared $sharedListener.shared"
+            println String.valueOf(new Date()) + " Connections $connectionsListener.connections Uploads $uploadsListener.uploads Shared $sharedListener.shared"
         } as TimerTask, 60000, 60000)
-        
+
         def latch = new CountDownLatch(1)
         def fileLoader = new Object() {
             public void onAllFilesLoadedEvent(AllFilesLoadedEvent e) {
@@ -83,14 +84,15 @@ class Cli {
         }
         core.eventBus.register(AllFilesLoadedEvent.class, fileLoader)
         core.startServices()
-        
+
+        core.eventBus.publish(new UILoadedEvent())
         println "waiting for files to load"
         latch.await()
         // now we begin
         println "MuWire is ready"
-        
+
         filesList = new File(filesList)
-        filesList.withReader { 
+        filesList.withReader {
             def toShare = it.readLine()
             core.eventBus.publish(new FileSharedEvent(file : new File(toShare)))
         }
@@ -101,7 +103,7 @@ class Cli {
         })
         Thread.sleep(Integer.MAX_VALUE)
     }
-    
+
     static class ConnectionListener {
         volatile int connections
         public void onConnectionEvent(ConnectionEvent e) {
@@ -112,19 +114,19 @@ class Cli {
             connections--
         }
     }
-    
+
     static class UploadsListener {
         volatile int uploads
         public void onUploadEvent(UploadEvent e) {
             uploads++
-            println "Starting upload of ${e.uploader.file.getName()} to ${e.uploader.request.downloader.getHumanReadableName()}"
+            println String.valueOf(new Date()) + " Starting upload of ${e.uploader.file.getName()} to ${e.uploader.request.downloader.getHumanReadableName()}"
         }
         public void onUploadFinishedEvent(UploadFinishedEvent e) {
             uploads--
-            println "Finished upload of ${e.uploader.file.getName()} to ${e.uploader.request.downloader.getHumanReadableName()}"
+            println String.valueOf(new Date()) + " Finished upload of ${e.uploader.file.getName()} to ${e.uploader.request.downloader.getHumanReadableName()}"
         }
     }
-    
+
     static class SharedListener {
         volatile int shared
         void onFileHashedEvent(FileHashedEvent e) {

cli/src/main/groovy/com/muwire/cli/CliDownloader.groovy

@@ -17,31 +17,31 @@ import com.muwire.core.search.UIResultEvent
 import net.i2p.data.Base64
 
 class CliDownloader {
-    
+
     private static final List<Downloader> downloaders = Collections.synchronizedList(new ArrayList<>())
     private static final Map<UUID,ResultsHolder> resultsListeners = new ConcurrentHashMap<>()
-    
+
     public static void main(String []args) {
         def home = System.getProperty("user.home") + File.separator + ".MuWire"
         home = new File(home)
         if (!home.exists())
             home.mkdirs()
-        
+
         def propsFile = new File(home,"MuWire.properties")
         if (!propsFile.exists()) {
             println "create props file ${propsFile.getAbsoluteFile()} before launching MuWire"
             System.exit(1)
         }
-        
+
         def props = new Properties()
         propsFile.withInputStream { props.load(it) }
         props = new MuWireSettings(props)
-        
+
         def filesList
         int connections
         int resultWait
         if (args.length != 3) {
-            println "Enter a file containing list of hashes of files to download, " + 
+            println "Enter a file containing list of hashes of files to download, " +
                 "how many connections you want before searching" +
                 "and how long to wait for results to arrive"
                 System.exit(1)
@@ -53,24 +53,24 @@ class CliDownloader {
 
         Core core
         try {
-            core = new Core(props, home, "0.2.5")
+            core = new Core(props, home, "0.5.3")
         } catch (Exception bad) {
             bad.printStackTrace(System.out)
             println "Failed to initialize core, exiting"
             System.exit(1)
         }
-        
-        
+
+
         def latch = new CountDownLatch(connections)
         def connectionListener = new ConnectionWaiter(latch : latch)
         core.eventBus.register(ConnectionEvent.class, connectionListener)
-        
+
         core.startServices()
         println "starting to wait until there are $connections connections"
         latch.await()
-        
+
         println "connected, searching for files"
-        
+
         def file = new File(filesList)
         file.eachLine {
             String[] split = it.split(",")
@@ -79,22 +79,22 @@ class CliDownloader {
             def hash = Base64.decode(split[0])
             def searchEvent = new SearchEvent(searchHash : hash, uuid : uuid)
             core.eventBus.publish(new QueryEvent(searchEvent : searchEvent, firstHop:true,
-                replyTo: core.me.destination, receivedOn : core.me.destination, originator: core.me)) 
+                replyTo: core.me.destination, receivedOn : core.me.destination, originator: core.me))
         }
-        
+
         println "waiting for results to arrive"
         Thread.sleep(resultWait * 1000)
-        
+
         core.eventBus.register(DownloadStartedEvent.class, new DownloadListener())
         resultsListeners.each { uuid, resultsListener ->
             println "starting download of $resultsListener.fileName from ${resultsListener.getResults().size()} hosts"
             File target = new File(resultsListener.fileName)
-            
+
             core.eventBus.publish(new UIDownloadEvent(target : target, result : resultsListener.getResults()))
         }
-        
+
         Thread.sleep(1000)
-        
+
         Timer timer = new Timer("stats-printer")
         timer.schedule({
             println "==== STATUS UPDATE ==="
@@ -109,7 +109,7 @@ class CliDownloader {
             }
             println "==== END ==="
         } as TimerTask, 60000, 60000)
-        
+
         println "waiting for downloads to finish"
         while(true) {
             boolean allFinished = true
@@ -120,10 +120,10 @@ class CliDownloader {
                 break
             Thread.sleep(1000)
         }
-        
+
         println "all downloads finished"
     }
-    
+
     static class ResultsHolder {
         final List<UIResultEvent> results = Collections.synchronizedList(new ArrayList<>())
         String fileName
@@ -134,7 +134,7 @@ class CliDownloader {
             results
         }
     }
-    
+
     static class ResultsListener {
         UUID uuid
         String fileName
@@ -148,7 +148,7 @@ class CliDownloader {
             listener.add(e)
         }
     }
-    
+
     static class ConnectionWaiter {
         CountDownLatch latch
         public void onConnectionEvent(ConnectionEvent e) {
@@ -156,7 +156,7 @@ class CliDownloader {
                 latch.countDown()
         }
     }
-    
+
 
     static class DownloadListener {
         public void onDownloadStartedEvent(DownloadStartedEvent e) {

cli/src/main/groovy/com/muwire/cli/FileList.groovy

@@ -0,0 +1,23 @@
+package com.muwire.cli
+
+import com.muwire.core.util.DataUtil
+
+import groovy.json.JsonSlurper
+import net.i2p.data.Base64
+
+class FileList {
+    public static void main(String [] args) {
+        if (args.length < 1) {
+            println "pass files.json as argument"
+            System.exit(1)
+        }
+
+        def slurper = new JsonSlurper()
+        File filesJson = new File(args[0])
+        filesJson.eachLine {
+            def json = slurper.parseText(it)
+            String name = DataUtil.readi18nString(Base64.decode(json.file))
+            println "$name,$json.length,$json.pieceSize,$json.infoHash"
+        }
+    }
+}

core/build.gradle

@@ -2,8 +2,9 @@ apply plugin : 'application'
 mainClassName = 'com.muwire.core.Core'
 applicationDefaultJvmArgs = ['-Djava.util.logging.config.file=logging.properties']
 dependencies {
-    compile 'net.i2p.client:mstreaming:0.9.40'
-    compile 'net.i2p.client:streaming:0.9.40'
+    compile "net.i2p:router:${i2pVersion}"
+    compile "net.i2p.client:mstreaming:${i2pVersion}"
+    compile "net.i2p.client:streaming:${i2pVersion}"
 
     testCompile 'org.junit.jupiter:junit-jupiter-api:5.4.2'    
     testCompile 'junit:junit:4.12'

core/src/main/groovy/com/muwire/core/Constants.groovy

@@ -1,15 +0,0 @@
-package com.muwire.core
-
-import net.i2p.crypto.SigType
-
-class Constants {
-    public static final byte PERSONA_VERSION = (byte)1
-    public static final SigType SIG_TYPE = SigType.EdDSA_SHA512_Ed25519 
-    
-    public static final int MAX_HEADER_SIZE = 0x1 << 14
-    public static final int MAX_HEADERS = 16
-    
-    public static final float DOWNLOAD_SEQUENTIAL_RATIO = 0.8f
-    
-    public static final String SPLIT_PATTERN = "[\\.,_-]"
-}

core/src/main/groovy/com/muwire/core/Core.groovy

@@ -1,6 +1,7 @@
 package com.muwire.core
 
 import java.nio.charset.StandardCharsets
+import java.util.concurrent.atomic.AtomicBoolean
 
 import com.muwire.core.connection.ConnectionAcceptor
 import com.muwire.core.connection.ConnectionEstablisher
@@ -12,10 +13,14 @@ import com.muwire.core.connection.I2PConnector
 import com.muwire.core.connection.LeafConnectionManager
 import com.muwire.core.connection.UltrapeerConnectionManager
 import com.muwire.core.download.DownloadManager
+import com.muwire.core.download.SourceDiscoveredEvent
 import com.muwire.core.download.UIDownloadCancelledEvent
 import com.muwire.core.download.UIDownloadEvent
+import com.muwire.core.download.UIDownloadPausedEvent
+import com.muwire.core.download.UIDownloadResumedEvent
 import com.muwire.core.files.FileDownloadedEvent
 import com.muwire.core.files.FileHashedEvent
+import com.muwire.core.files.FileHashingEvent
 import com.muwire.core.files.FileHasher
 import com.muwire.core.files.FileLoadedEvent
 import com.muwire.core.files.FileManager
@@ -23,19 +28,33 @@ import com.muwire.core.files.FileSharedEvent
 import com.muwire.core.files.FileUnsharedEvent
 import com.muwire.core.files.HasherService
 import com.muwire.core.files.PersisterService
+import com.muwire.core.files.UICommentEvent
+import com.muwire.core.files.UIPersistFilesEvent
+import com.muwire.core.files.AllFilesLoadedEvent
+import com.muwire.core.files.DirectoryUnsharedEvent
+import com.muwire.core.files.DirectoryWatchedEvent
+import com.muwire.core.files.DirectoryWatcher
 import com.muwire.core.hostcache.CacheClient
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.hostcache.HostDiscoveredEvent
+import com.muwire.core.mesh.MeshManager
+import com.muwire.core.search.BrowseManager
 import com.muwire.core.search.QueryEvent
 import com.muwire.core.search.ResultsEvent
 import com.muwire.core.search.ResultsSender
 import com.muwire.core.search.SearchEvent
 import com.muwire.core.search.SearchManager
+import com.muwire.core.search.UIBrowseEvent
+import com.muwire.core.search.UIResultBatchEvent
 import com.muwire.core.trust.TrustEvent
 import com.muwire.core.trust.TrustService
+import com.muwire.core.trust.TrustSubscriber
+import com.muwire.core.trust.TrustSubscriptionEvent
 import com.muwire.core.update.UpdateClient
 import com.muwire.core.upload.UploadManager
 import com.muwire.core.util.MuWireLogManager
+import com.muwire.core.content.ContentControlEvent
+import com.muwire.core.content.ContentManager
 
 import groovy.util.logging.Log
 import net.i2p.I2PAppContext
@@ -44,6 +63,7 @@ import net.i2p.client.I2PSession
 import net.i2p.client.streaming.I2PSocketManager
 import net.i2p.client.streaming.I2PSocketManagerFactory
 import net.i2p.client.streaming.I2PSocketOptions
+import net.i2p.client.streaming.I2PSocketManager.DisconnectListener
 import net.i2p.crypto.DSAEngine
 import net.i2p.crypto.SigType
 import net.i2p.data.Destination
@@ -51,16 +71,20 @@ import net.i2p.data.PrivateKey
 import net.i2p.data.Signature
 import net.i2p.data.SigningPrivateKey
 
+import net.i2p.router.Router
+import net.i2p.router.RouterContext
+
 @Log
 public class Core {
-    
+
     final EventBus eventBus
     final Persona me
     final File home
     final Properties i2pOptions
     final MuWireSettings muOptions
-    
+
     private final TrustService trustService
+    private final TrustSubscriber trustSubscriber
     private final PersisterService persisterService
     private final HostCache hostCache
     private final ConnectionManager connectionManager
@@ -70,24 +94,19 @@ public class Core {
     private final ConnectionEstablisher connectionEstablisher
     private final HasherService hasherService
     private final DownloadManager downloadManager
-        
+    private final DirectoryWatcher directoryWatcher
+    final FileManager fileManager
+    final UploadManager uploadManager
+    final ContentManager contentManager
+
+    private final Router router
+
+    final AtomicBoolean shutdown = new AtomicBoolean()
+
     public Core(MuWireSettings props, File home, String myVersion) {
-        this.home = home		
+        this.home = home
         this.muOptions = props
-        log.info "Initializing I2P context"
-        I2PAppContext.getGlobalContext().logManager()
-        I2PAppContext.getGlobalContext()._logManager = new MuWireLogManager()
-        
-		log.info("initializing I2P socket manager")
-		def i2pClient = new I2PClientFactory().createClient()
-		File keyDat = new File(home, "key.dat")
-		if (!keyDat.exists()) {
-			log.info("Creating new key.dat")
-			keyDat.withOutputStream { 
-				i2pClient.createDestination(it, Constants.SIG_TYPE)
-			}
-		}
-		
+
         i2pOptions = new Properties()
         def i2pOptionsFile = new File(home,"i2p.properties")
         if (i2pOptionsFile.exists()) {
@@ -95,29 +114,70 @@ public class Core {
 
             if (!i2pOptions.containsKey("inbound.nickname"))
                 i2pOptions["inbound.nickname"] = "MuWire"
-            if (!i2pOptions.containsKey("outbound.nickname"))
-                i2pOptions["outbound.nickname"] = "MuWire"
+                if (!i2pOptions.containsKey("outbound.nickname"))
+                    i2pOptions["outbound.nickname"] = "MuWire"
         } else {
             i2pOptions["inbound.nickname"] = "MuWire"
             i2pOptions["outbound.nickname"] = "MuWire"
             i2pOptions["inbound.length"] = "3"
-            i2pOptions["inbound.quantity"] = "2"
+            i2pOptions["inbound.quantity"] = "4"
             i2pOptions["outbound.length"] = "3"
-            i2pOptions["outbound.quantity"] = "2"
+            i2pOptions["outbound.quantity"] = "4"
             i2pOptions["i2cp.tcp.host"] = "127.0.0.1"
             i2pOptions["i2cp.tcp.port"] = "7654"
+            Random r = new Random()
+            int port = r.nextInt(60000) + 4000
+            i2pOptions["i2np.ntcp.port"] = String.valueOf(port)
+            i2pOptions["i2np.udp.port"] = String.valueOf(port)
+            i2pOptionsFile.withOutputStream { i2pOptions.store(it, "") }
         }
-        
+
+        if (!props.embeddedRouter) {
+            log.info "Initializing I2P context"
+            I2PAppContext.getGlobalContext().logManager()
+            I2PAppContext.getGlobalContext()._logManager = new MuWireLogManager()
+            router = null
+        } else {
+            log.info("launching embedded router")
+            Properties routerProps = new Properties()
+            routerProps.setProperty("i2p.dir.base", home.getAbsolutePath())
+            routerProps.setProperty("i2p.dir.config", home.getAbsolutePath())
+            routerProps.setProperty("router.excludePeerCaps", "KLM")
+            routerProps.setProperty("i2np.inboundKBytesPerSecond", String.valueOf(props.inBw))
+            routerProps.setProperty("i2np.outboundKBytesPerSecond", String.valueOf(props.outBw))
+            routerProps.setProperty("i2cp.disableInterface", "true")
+            routerProps.setProperty("i2np.ntcp.port", i2pOptions["i2np.ntcp.port"])
+            routerProps.setProperty("i2np.udp.port", i2pOptions["i2np.udp.port"])
+            routerProps.setProperty("i2np.udp.internalPort", i2pOptions["i2np.udp.port"])
+            router = new Router(routerProps)
+            router.getContext().setLogManager(new MuWireLogManager())
+            router.runRouter()
+            while(!router.isRunning())
+                Thread.sleep(100)
+        }
+
+        log.info("initializing I2P socket manager")
+        def i2pClient = new I2PClientFactory().createClient()
+        File keyDat = new File(home, "key.dat")
+        if (!keyDat.exists()) {
+            log.info("Creating new key.dat")
+            keyDat.withOutputStream {
+                i2pClient.createDestination(it, Constants.SIG_TYPE)
+            }
+        }
+
+
         // options like tunnel length and quantity
-		I2PSession i2pSession
-		I2PSocketManager socketManager
-		keyDat.withInputStream {
-			socketManager = new I2PSocketManagerFactory().createManager(it, i2pOptions["i2cp.tcp.host"], i2pOptions["i2cp.tcp.port"].toInteger(), i2pOptions)
-		}
-		socketManager.getDefaultOptions().setReadTimeout(60000)
-		socketManager.getDefaultOptions().setConnectTimeout(30000)
-		i2pSession = socketManager.getSession()
-		
+        I2PSession i2pSession
+        I2PSocketManager socketManager
+        keyDat.withInputStream {
+            socketManager = new I2PSocketManagerFactory().createManager(it, i2pOptions["i2cp.tcp.host"], i2pOptions["i2cp.tcp.port"].toInteger(), i2pOptions)
+        }
+        socketManager.getDefaultOptions().setReadTimeout(60000)
+        socketManager.getDefaultOptions().setConnectTimeout(30000)
+        socketManager.addDisconnectListener({eventBus.publish(new RouterDisconnectedEvent())} as DisconnectListener)
+        i2pSession = socketManager.getSession()
+
         def destination = new Destination()
         def spk = new SigningPrivateKey(Constants.SIG_TYPE)
         keyDat.withInputStream {
@@ -125,8 +185,8 @@ public class Core {
             def privateKey = new PrivateKey()
             privateKey.readBytes(it)
             spk.readBytes(it)
-		}
-            
+        }
+
         def baos = new ByteArrayOutputStream()
         def daos = new DataOutputStream(baos)
         daos.write(Constants.PERSONA_VERSION)
@@ -143,87 +203,121 @@ public class Core {
         me = new Persona(new ByteArrayInputStream(baos.toByteArray()))
         log.info("Loaded myself as "+me.getHumanReadableName())
 
-		eventBus = new EventBus()
-		
-		log.info("initializing trust service")
-		File goodTrust = new File(home, "trusted")
-		File badTrust = new File(home, "distrusted")
-		trustService = new TrustService(goodTrust, badTrust, 5000)
-		eventBus.register(TrustEvent.class, trustService)
-		
-		
-		log.info "initializing file manager"
-		FileManager fileManager = new FileManager(eventBus, props)
-		eventBus.register(FileHashedEvent.class, fileManager)
-		eventBus.register(FileLoadedEvent.class, fileManager)
-		eventBus.register(FileDownloadedEvent.class, fileManager)
-		eventBus.register(FileUnsharedEvent.class, fileManager)
-		eventBus.register(SearchEvent.class, fileManager)
-		
-		log.info "initializing persistence service"
-		persisterService = new PersisterService(new File(home, "files.json"), eventBus, 15000, fileManager)
-        
-		log.info("initializing host cache")
-		File hostStorage = new File(home, "hosts.json")
+        eventBus = new EventBus()
+
+        log.info("initializing trust service")
+        File goodTrust = new File(home, "trusted")
+        File badTrust = new File(home, "distrusted")
+        trustService = new TrustService(goodTrust, badTrust, 5000)
+        eventBus.register(TrustEvent.class, trustService)
+
+
+        log.info "initializing file manager"
+        fileManager = new FileManager(eventBus, props)
+        eventBus.register(FileHashedEvent.class, fileManager)
+        eventBus.register(FileLoadedEvent.class, fileManager)
+        eventBus.register(FileDownloadedEvent.class, fileManager)
+        eventBus.register(FileUnsharedEvent.class, fileManager)
+        eventBus.register(SearchEvent.class, fileManager)
+        eventBus.register(DirectoryUnsharedEvent.class, fileManager)
+        eventBus.register(UICommentEvent.class, fileManager)
+
+        log.info("initializing mesh manager")
+        MeshManager meshManager = new MeshManager(fileManager, home, props)
+        eventBus.register(SourceDiscoveredEvent.class, meshManager)
+
+        log.info "initializing persistence service"
+        persisterService = new PersisterService(new File(home, "files.json"), eventBus, 60000, fileManager)
+        eventBus.register(UILoadedEvent.class, persisterService)
+        eventBus.register(UIPersistFilesEvent.class, persisterService)
+
+        log.info("initializing host cache")
+        File hostStorage = new File(home, "hosts.json")
         hostCache = new HostCache(trustService,hostStorage, 30000, props, i2pSession.getMyDestination())
-		eventBus.register(HostDiscoveredEvent.class, hostCache)
-		eventBus.register(ConnectionEvent.class, hostCache)
-		
-		log.info("initializing connection manager")
-		connectionManager = props.isLeaf() ? 
-			new LeafConnectionManager(eventBus, me, 3, hostCache, props) : 
+        eventBus.register(HostDiscoveredEvent.class, hostCache)
+        eventBus.register(ConnectionEvent.class, hostCache)
+
+        log.info("initializing connection manager")
+        connectionManager = props.isLeaf() ?
+            new LeafConnectionManager(eventBus, me, 3, hostCache, props) :
             new UltrapeerConnectionManager(eventBus, me, 512, 512, hostCache, trustService, props)
-		eventBus.register(TrustEvent.class, connectionManager)
-		eventBus.register(ConnectionEvent.class, connectionManager)
-		eventBus.register(DisconnectionEvent.class, connectionManager)
+        eventBus.register(TrustEvent.class, connectionManager)
+        eventBus.register(ConnectionEvent.class, connectionManager)
+        eventBus.register(DisconnectionEvent.class, connectionManager)
         eventBus.register(QueryEvent.class, connectionManager)
-		
-		log.info("initializing cache client")
-		cacheClient = new CacheClient(eventBus,hostCache, connectionManager, i2pSession, props, 10000)
-        
+
+        log.info("initializing cache client")
+        cacheClient = new CacheClient(eventBus,hostCache, connectionManager, i2pSession, props, 10000)
+
         log.info("initializing update client")
-        updateClient = new UpdateClient(eventBus, i2pSession, myVersion, props)
-        
-		log.info("initializing connector")
-		I2PConnector i2pConnector = new I2PConnector(socketManager)
-        
-		log.info "initializing results sender"
-		ResultsSender resultsSender = new ResultsSender(eventBus, i2pConnector, me)
-		
-		log.info "initializing search manager"
-		SearchManager searchManager = new SearchManager(eventBus, me, resultsSender)
-		eventBus.register(QueryEvent.class, searchManager)
-		eventBus.register(ResultsEvent.class, searchManager)
-		
+        updateClient = new UpdateClient(eventBus, i2pSession, myVersion, props, fileManager, me)
+        eventBus.register(FileDownloadedEvent.class, updateClient)
+        eventBus.register(UIResultBatchEvent.class, updateClient)
+
+        log.info("initializing connector")
+        I2PConnector i2pConnector = new I2PConnector(socketManager)
+
+        log.info "initializing results sender"
+        ResultsSender resultsSender = new ResultsSender(eventBus, i2pConnector, me, props)
+
+        log.info "initializing search manager"
+        SearchManager searchManager = new SearchManager(eventBus, me, resultsSender)
+        eventBus.register(QueryEvent.class, searchManager)
+        eventBus.register(ResultsEvent.class, searchManager)
+
         log.info("initializing download manager")
-        downloadManager = new DownloadManager(eventBus, i2pConnector, home, me)
+        downloadManager = new DownloadManager(eventBus, trustService, meshManager, props, i2pConnector, home, me)
         eventBus.register(UIDownloadEvent.class, downloadManager)
         eventBus.register(UILoadedEvent.class, downloadManager)
         eventBus.register(FileDownloadedEvent.class, downloadManager)
         eventBus.register(UIDownloadCancelledEvent.class, downloadManager)
-        
+        eventBus.register(SourceDiscoveredEvent.class, downloadManager)
+        eventBus.register(UIDownloadPausedEvent.class, downloadManager)
+        eventBus.register(UIDownloadResumedEvent.class, downloadManager)
+
         log.info("initializing upload manager")
-        UploadManager uploadManager = new UploadManager(eventBus, fileManager)
-        
+        uploadManager = new UploadManager(eventBus, fileManager, meshManager, downloadManager, props)
+
         log.info("initializing connection establisher")
         connectionEstablisher = new ConnectionEstablisher(eventBus, i2pConnector, props, connectionManager, hostCache)
-        
-		log.info("initializing acceptor")
-		I2PAcceptor i2pAcceptor = new I2PAcceptor(socketManager)
-		connectionAcceptor = new ConnectionAcceptor(eventBus, connectionManager, props, 
-            i2pAcceptor, hostCache, trustService, searchManager, uploadManager, connectionEstablisher)
-		
-        
+
+        log.info("initializing acceptor")
+        I2PAcceptor i2pAcceptor = new I2PAcceptor(socketManager)
+        connectionAcceptor = new ConnectionAcceptor(eventBus, connectionManager, props,
+            i2pAcceptor, hostCache, trustService, searchManager, uploadManager, fileManager, connectionEstablisher)
+
+        log.info("initializing directory watcher")
+        directoryWatcher = new DirectoryWatcher(eventBus, fileManager, home, props)
+        eventBus.register(DirectoryWatchedEvent.class, directoryWatcher)
+        eventBus.register(AllFilesLoadedEvent.class, directoryWatcher)
+        eventBus.register(DirectoryUnsharedEvent.class, directoryWatcher)
+
         log.info("initializing hasher service")
-        hasherService = new HasherService(new FileHasher(), eventBus, fileManager)
+        hasherService = new HasherService(new FileHasher(), eventBus, fileManager, props)
         eventBus.register(FileSharedEvent.class, hasherService)
-	}
-    
+        eventBus.register(FileUnsharedEvent.class, hasherService)
+        eventBus.register(DirectoryUnsharedEvent.class, hasherService)
+
+        log.info("initializing trust subscriber")
+        trustSubscriber = new TrustSubscriber(eventBus, i2pConnector, props)
+        eventBus.register(UILoadedEvent.class, trustSubscriber)
+        eventBus.register(TrustSubscriptionEvent.class, trustSubscriber)
+        
+        log.info("initializing content manager")
+        contentManager = new ContentManager()
+        eventBus.register(ContentControlEvent.class, contentManager)
+        eventBus.register(QueryEvent.class, contentManager)
+        
+        log.info("initializing browse manager")
+        BrowseManager browseManager = new BrowseManager(i2pConnector, eventBus)
+        eventBus.register(UIBrowseEvent.class, browseManager)
+        
+    }
+
     public void startServices() {
         hasherService.start()
         trustService.start()
         trustService.waitForLoad()
-        persisterService.start()
         hostCache.start()
         connectionManager.start()
         cacheClient.start()
@@ -232,16 +326,34 @@ public class Core {
         hostCache.waitForLoad()
         updateClient.start()
     }
-    
+
     public void shutdown() {
+        if (!shutdown.compareAndSet(false, true)) {
+            log.info("already shutting down")
+            return
+        }
+        log.info("saving settings")
+        File f = new File(home, "MuWire.properties")
+        f.withOutputStream { muOptions.write(it) }
+        log.info("shutting down trust subscriber")
+        trustSubscriber.stop()
         log.info("shutting down download manageer")
         downloadManager.shutdown()
         log.info("shutting down connection acceeptor")
         connectionAcceptor.stop()
         log.info("shutting down connection establisher")
         connectionEstablisher.stop()
+        log.info("shutting down directory watcher")
+        directoryWatcher.stop()
+        log.info("shutting down cache client")
+        cacheClient.stop()
         log.info("shutting down connection manager")
         connectionManager.shutdown()
+        if (router != null) {
+            log.info("shutting down embedded router")
+            router.shutdown(0)
+        }
+        log.info("shutdown complete")
     }
 
     static main(args) {
@@ -251,7 +363,7 @@ public class Core {
             log.info("creating home dir")
             home.mkdir()
         }
-        
+
         def props = new Properties()
         def propsFile = new File(home, "MuWire.properties")
         if (propsFile.exists()) {
@@ -267,10 +379,10 @@ public class Core {
                 props.write(it)
             }
         }
-        
-        Core core = new Core(props, home, "0.2.5")
+
+        Core core = new Core(props, home, "0.5.5")
         core.startServices()
-        
+
         // ... at the end, sleep or execute script
         if (args.length == 0) {
             log.info("initialized everything, sleeping")

core/src/main/groovy/com/muwire/core/Event.groovy

@@ -4,17 +4,17 @@ import java.util.concurrent.atomic.AtomicLong
 
 class Event {
 
-	private static final AtomicLong SEQ_NO = new AtomicLong();
-	final long seqNo
-	final long timestamp
-	
-	Event() {
-		seqNo = SEQ_NO.getAndIncrement()
-		timestamp = System.currentTimeMillis()
-	}
-	
-	@Override
-	public String toString() {
-		"seqNo $seqNo timestamp $timestamp"
-	}
+    private static final AtomicLong SEQ_NO = new AtomicLong();
+    final long seqNo
+    final long timestamp
+
+    Event() {
+        seqNo = SEQ_NO.getAndIncrement()
+        timestamp = System.currentTimeMillis()
+    }
+
+    @Override
+    public String toString() {
+        "seqNo $seqNo timestamp $timestamp"
+    }
 }

core/src/main/groovy/com/muwire/core/EventBus.groovy

@@ -10,42 +10,47 @@ import com.muwire.core.files.FileSharedEvent
 import groovy.util.logging.Log
 @Log
 class EventBus {
-	
-	private Map handlers = new HashMap()
-	private final Executor executor = Executors.newSingleThreadExecutor {r ->
-		def rv = new Thread(r)
-		rv.setDaemon(true)
-		rv.setName("event-bus")
-		rv
-	}
 
-	void publish(Event e) {
-		executor.execute({publishInternal(e)} as Runnable)
-	}
-	
-	private void publishInternal(Event e) {
-		log.fine "publishing event $e of type ${e.getClass().getSimpleName()} event $e"
-		def currentHandlers
-		final def clazz = e.getClass()
-		synchronized(this) {
-			currentHandlers = handlers.getOrDefault(clazz, [])
-		}
-		currentHandlers.each {
+    private Map handlers = new HashMap()
+    private final Executor executor = Executors.newSingleThreadExecutor {r ->
+        def rv = new Thread(r)
+        rv.setDaemon(true)
+        rv.setName("event-bus")
+        rv
+    }
+
+    void publish(Event e) {
+        executor.execute({publishInternal(e)} as Runnable)
+    }
+
+    private void publishInternal(Event e) {
+        log.fine "publishing event $e of type ${e.getClass().getSimpleName()} event $e"
+        def currentHandlers
+        final def clazz = e.getClass()
+        synchronized(this) {
+            currentHandlers = handlers.getOrDefault(clazz, [])
+        }
+        currentHandlers.each {
             try {
                 it."on${clazz.getSimpleName()}"(e)
             } catch (Exception bad) {
                 log.log(Level.SEVERE, "exception dispatching event",bad)
             }
-		}
-	}
-	
-	synchronized void register(Class<? extends Event> eventType, def handler) {
-		log.info "Registering $handler for type $eventType"
-		def currentHandlers = handlers.get(eventType)
-		if (currentHandlers == null) {
-			currentHandlers = new CopyOnWriteArrayList()
-			handlers.put(eventType, currentHandlers)
-		}
-		currentHandlers.add handler
-	}
+        }
+    }
+
+    synchronized void register(Class<? extends Event> eventType, def handler) {
+        log.info "Registering $handler for type $eventType"
+        def currentHandlers = handlers.get(eventType)
+        if (currentHandlers == null) {
+            currentHandlers = new CopyOnWriteArrayList()
+            handlers.put(eventType, currentHandlers)
+        }
+        currentHandlers.add handler
+    }
+    
+    synchronized void unregister(Class<? extends Event> eventType, def handler) {
+        log.info("Unregistering $handler for type $eventType")
+        handlers[eventType]?.remove(handler)
+    }
 }

core/src/main/groovy/com/muwire/core/InvalidSignatureException.groovy

@@ -13,5 +13,5 @@ class InvalidSignatureException extends Exception {
     public InvalidSignatureException(Throwable cause) {
         super(cause);
     }
-    
+
 }

core/src/main/groovy/com/muwire/core/MuWireSettings.groovy

@@ -1,74 +1,183 @@
 package com.muwire.core
 
+import java.util.stream.Collectors
+
 import com.muwire.core.hostcache.CrawlerResponse
+import com.muwire.core.util.DataUtil
+
+import net.i2p.data.Base64
+import net.i2p.util.ConcurrentHashSet
 
 class MuWireSettings {
-	
+
     final boolean isLeaf
     boolean allowUntrusted
+    boolean searchExtraHop
+    boolean allowTrustLists
+    int trustListInterval
+    Set<Persona> trustSubscriptions
     int downloadRetryInterval
+    int totalUploadSlots
+    int uploadSlotsPerUser
     int updateCheckInterval
+    boolean autoDownloadUpdate
+    String updateType
     String nickname
     File downloadLocation
-    String sharedFiles
+    File incompleteLocation
     CrawlerResponse crawlerResponse
     boolean shareDownloadedFiles
-    boolean watchSharedDirectories
-    
-	MuWireSettings() {
+    boolean shareHiddenFiles
+    boolean searchComments
+    boolean browseFiles
+    Set<String> watchedDirectories
+    float downloadSequentialRatio
+    int hostClearInterval, hostHopelessInterval, hostRejectInterval
+    int meshExpiration
+    int speedSmoothSeconds
+    boolean embeddedRouter
+    int inBw, outBw
+    Set<String> watchedKeywords
+    Set<String> watchedRegexes
+    Set<String> negativeFileTree
+
+    MuWireSettings() {
         this(new Properties())
     }
-	
-	MuWireSettings(Properties props) {
-		isLeaf = Boolean.valueOf(props.get("leaf","false"))
-		allowUntrusted = Boolean.valueOf(props.get("allowUntrusted","true"))
-		crawlerResponse = CrawlerResponse.valueOf(props.get("crawlerResponse","REGISTERED"))
+
+    MuWireSettings(Properties props) {
+        isLeaf = Boolean.valueOf(props.get("leaf","false"))
+        allowUntrusted = Boolean.valueOf(props.getProperty("allowUntrusted","true"))
+        searchExtraHop = Boolean.valueOf(props.getProperty("searchExtraHop","false"))
+        allowTrustLists = Boolean.valueOf(props.getProperty("allowTrustLists","true"))
+        trustListInterval = Integer.valueOf(props.getProperty("trustListInterval","1"))
+        crawlerResponse = CrawlerResponse.valueOf(props.get("crawlerResponse","REGISTERED"))
         nickname = props.getProperty("nickname","MuWireUser")
-        downloadLocation = new File((String)props.getProperty("downloadLocation", 
+        downloadLocation = new File((String)props.getProperty("downloadLocation",
             System.getProperty("user.home")))
-        sharedFiles = props.getProperty("sharedFiles")
-        downloadRetryInterval = Integer.parseInt(props.getProperty("downloadRetryInterval","15"))
-        updateCheckInterval = Integer.parseInt(props.getProperty("updateCheckInterval","36"))
+        String incompleteLocationProp = props.getProperty("incompleteLocation")
+        if (incompleteLocationProp != null)
+            incompleteLocation = new File(incompleteLocationProp)
+        downloadRetryInterval = Integer.parseInt(props.getProperty("downloadRetryInterval","60"))
+        updateCheckInterval = Integer.parseInt(props.getProperty("updateCheckInterval","24"))
+        autoDownloadUpdate = Boolean.parseBoolean(props.getProperty("autoDownloadUpdate","true"))
+        updateType = props.getProperty("updateType","jar")
         shareDownloadedFiles = Boolean.parseBoolean(props.getProperty("shareDownloadedFiles","true"))
-        watchSharedDirectories = Boolean.parseBoolean(props.getProperty("watchSharedDirectories","true"))
-	}
-    
+        shareHiddenFiles = Boolean.parseBoolean(props.getProperty("shareHiddenFiles","false"))
+        downloadSequentialRatio = Float.valueOf(props.getProperty("downloadSequentialRatio","0.8"))
+        hostClearInterval = Integer.valueOf(props.getProperty("hostClearInterval","15"))
+        hostHopelessInterval = Integer.valueOf(props.getProperty("hostHopelessInterval", "1440"))
+        hostRejectInterval = Integer.valueOf(props.getProperty("hostRejectInterval", "1"))
+        meshExpiration = Integer.valueOf(props.getProperty("meshExpiration","60"))
+        embeddedRouter = Boolean.valueOf(props.getProperty("embeddedRouter","false"))
+        inBw = Integer.valueOf(props.getProperty("inBw","256"))
+        outBw = Integer.valueOf(props.getProperty("outBw","128"))
+        searchComments = Boolean.valueOf(props.getProperty("searchComments","true"))
+        browseFiles = Boolean.valueOf(props.getProperty("browseFiles","true"))
+        speedSmoothSeconds = Integer.valueOf(props.getProperty("speedSmoothSeconds","60"))
+        totalUploadSlots = Integer.valueOf(props.getProperty("totalUploadSlots","-1"))
+        uploadSlotsPerUser = Integer.valueOf(props.getProperty("uploadSlotsPerUser","-1"))
+
+        watchedDirectories = readEncodedSet(props, "watchedDirectories")
+        watchedKeywords = readEncodedSet(props, "watchedKeywords")
+        watchedRegexes = readEncodedSet(props, "watchedRegexes")
+        negativeFileTree = readEncodedSet(props, "negativeFileTree")
+
+        trustSubscriptions = new HashSet<>()
+        if (props.containsKey("trustSubscriptions")) {
+            props.getProperty("trustSubscriptions").split(",").each {
+                trustSubscriptions.add(new Persona(new ByteArrayInputStream(Base64.decode(it))))
+            }
+        }
+        
+        
+    }
+
     void write(OutputStream out) throws IOException {
         Properties props = new Properties()
         props.setProperty("leaf", isLeaf.toString())
         props.setProperty("allowUntrusted", allowUntrusted.toString())
+        props.setProperty("searchExtraHop", String.valueOf(searchExtraHop))
+        props.setProperty("allowTrustLists", String.valueOf(allowTrustLists))
+        props.setProperty("trustListInterval", String.valueOf(trustListInterval))
         props.setProperty("crawlerResponse", crawlerResponse.toString())
         props.setProperty("nickname", nickname)
         props.setProperty("downloadLocation", downloadLocation.getAbsolutePath())
+        if (incompleteLocation != null)
+            props.setProperty("incompleteLocation", incompleteLocation.getAbsolutePath())
         props.setProperty("downloadRetryInterval", String.valueOf(downloadRetryInterval))
         props.setProperty("updateCheckInterval", String.valueOf(updateCheckInterval))
+        props.setProperty("autoDownloadUpdate", String.valueOf(autoDownloadUpdate))
+        props.setProperty("updateType",String.valueOf(updateType))
         props.setProperty("shareDownloadedFiles", String.valueOf(shareDownloadedFiles))
-        props.setProperty("watchSharedDirectories", String.valueOf(watchSharedDirectories))
-        if (sharedFiles != null)
-            props.setProperty("sharedFiles", sharedFiles)
+        props.setProperty("shareHiddenFiles", String.valueOf(shareHiddenFiles))
+        props.setProperty("downloadSequentialRatio", String.valueOf(downloadSequentialRatio))
+        props.setProperty("hostClearInterval", String.valueOf(hostClearInterval))
+        props.setProperty("hostHopelessInterval", String.valueOf(hostHopelessInterval))
+        props.setProperty("hostRejectInterval", String.valueOf(hostRejectInterval))
+        props.setProperty("meshExpiration", String.valueOf(meshExpiration))
+        props.setProperty("embeddedRouter", String.valueOf(embeddedRouter))
+        props.setProperty("inBw", String.valueOf(inBw))
+        props.setProperty("outBw", String.valueOf(outBw))
+        props.setProperty("searchComments", String.valueOf(searchComments))
+        props.setProperty("browseFiles", String.valueOf(browseFiles))
+        props.setProperty("speedSmoothSeconds", String.valueOf(speedSmoothSeconds))
+        props.setProperty("totalUploadSlots", String.valueOf(totalUploadSlots))
+        props.setProperty("uploadSlotsPerUser", String.valueOf(uploadSlotsPerUser))
+
+        writeEncodedSet(watchedDirectories, "watchedDirectories", props)
+        writeEncodedSet(watchedKeywords, "watchedKeywords", props)
+        writeEncodedSet(watchedRegexes, "watchedRegexes", props)
+        writeEncodedSet(negativeFileTree, "negativeFileTree", props)
+
+        if (!trustSubscriptions.isEmpty()) {
+            String encoded = trustSubscriptions.stream().
+                map({it.toBase64()}).
+                collect(Collectors.joining(","))
+            props.setProperty("trustSubscriptions", encoded)
+        }
+
         props.store(out, "")
     }
-
-	boolean isLeaf() {
-		isLeaf
-	}
-	
-	boolean allowUntrusted() {
-		allowUntrusted
-	} 
-	
-	void setAllowUntrusted(boolean allowUntrusted) {
-		this.allowUntrusted = allowUntrusted
-	}
-	
-	CrawlerResponse getCrawlerResponse() {
-		crawlerResponse
-	}
-	
-	void setCrawlerResponse(CrawlerResponse crawlerResponse) {
-		this.crawlerResponse = crawlerResponse
-	}
     
+    private static Set<String> readEncodedSet(Properties props, String property) {
+        Set<String> rv = new ConcurrentHashSet<>()
+        if (props.containsKey(property)) {
+            String[] encoded = props.getProperty(property).split(",")
+            encoded.each { rv << DataUtil.readi18nString(Base64.decode(it)) }
+        }
+        rv
+    }
+    
+    private static void writeEncodedSet(Set<String> set, String property, Properties props) {
+        if (set.isEmpty())
+            return
+        String encoded = set.stream().
+            map({Base64.encode(DataUtil.encodei18nString(it))}).
+            collect(Collectors.joining(","))
+        props.setProperty(property, encoded)
+    }
+
+    boolean isLeaf() {
+        isLeaf
+    }
+
+    boolean allowUntrusted() {
+        allowUntrusted
+    }
+
+    void setAllowUntrusted(boolean allowUntrusted) {
+        this.allowUntrusted = allowUntrusted
+    }
+
+    CrawlerResponse getCrawlerResponse() {
+        crawlerResponse
+    }
+
+    void setCrawlerResponse(CrawlerResponse crawlerResponse) {
+        this.crawlerResponse = crawlerResponse
+    }
+
     String getNickname() {
         nickname
     }

core/src/main/groovy/com/muwire/core/Name.groovy

@@ -7,11 +7,11 @@ import java.nio.charset.StandardCharsets
  */
 public class Name {
     final String name
-    
+
     Name(String name) {
         this.name = name
     }
-    
+
     Name(InputStream nameStream) throws IOException {
         DataInputStream dis = new DataInputStream(nameStream)
         int length = dis.readUnsignedShort()
@@ -19,22 +19,22 @@ public class Name {
         dis.readFully(nameBytes)
         this.name = new String(nameBytes, StandardCharsets.UTF_8)
     }
-    
+
     public void write(OutputStream out) throws IOException {
         DataOutputStream dos = new DataOutputStream(out)
         dos.writeShort(name.length())
         dos.write(name.getBytes(StandardCharsets.UTF_8))
     }
-    
+
     public getName() {
         name
     }
-    
+
     @Override
     public int hashCode() {
         name.hashCode()
     }
-    
+
     @Override
     public boolean equals(Object o) {
         if (!(o instanceof Name))

core/src/main/groovy/com/muwire/core/Persona.groovy

@@ -9,7 +9,7 @@ import net.i2p.data.SigningPublicKey
 
 public class Persona {
     private static final int SIG_LEN = Constants.SIG_TYPE.getSigLen()
-    
+
     private final byte version
     private final Name name
     private final Destination destination
@@ -17,12 +17,12 @@ public class Persona {
     private volatile String humanReadableName
     private volatile String base64
     private volatile byte[] payload
-    
+
     public Persona(InputStream personaStream) throws IOException, InvalidSignatureException {
         version = (byte) (personaStream.read() & 0xFF)
         if (version != Constants.PERSONA_VERSION)
             throw new IOException("Unknown version "+version)
-            
+
         name = new Name(personaStream)
         destination = Destination.create(personaStream)
         sig = new byte[SIG_LEN]
@@ -31,7 +31,7 @@ public class Persona {
         if (!verify(version, name, destination, sig))
             throw new InvalidSignatureException(getHumanReadableName() + " didn't verify")
     }
-    
+
     private static boolean verify(byte version, Name name, Destination destination, byte [] sig) {
         ByteArrayOutputStream baos = new ByteArrayOutputStream()
         baos.write(version)
@@ -42,7 +42,7 @@ public class Persona {
         Signature signature = new Signature(Constants.SIG_TYPE, sig)
         DSAEngine.getInstance().verifySignature(signature, payload, spk)
     }
-    
+
     public void write(OutputStream out) throws IOException {
         if (payload == null) {
             ByteArrayOutputStream baos = new ByteArrayOutputStream()
@@ -54,13 +54,13 @@ public class Persona {
         }
         out.write(payload)
     }
-    
+
     public String getHumanReadableName() {
-        if (humanReadableName == null) 
+        if (humanReadableName == null)
             humanReadableName = name.getName() + "@" + destination.toBase32().substring(0,32)
         humanReadableName
     }
-    
+
     public String toBase64() {
         if (base64 == null) {
             def baos = new ByteArrayOutputStream()
@@ -69,12 +69,12 @@ public class Persona {
         }
         base64
     }
-    
+
     @Override
     public int hashCode() {
         name.hashCode() ^ destination.hashCode()
     }
-    
+
     @Override
     public boolean equals(Object o) {
         if (!(o instanceof Persona))
@@ -82,4 +82,13 @@ public class Persona {
         Persona other = (Persona)o
         name.equals(other.name) && destination.equals(other.destination)
     }
+
+    public static void main(String []args) {
+        if (args.length != 1) {
+            println "This utility decodes a bas64-encoded persona"
+            System.exit(1)
+        }
+        Persona p = new Persona(new ByteArrayInputStream(Base64.decode(args[0])))
+        println p.getHumanReadableName()
+    }
 }

core/src/main/groovy/com/muwire/core/RouterDisconnectedEvent.groovy

@@ -0,0 +1,4 @@
+package com.muwire.core
+
+class RouterDisconnectedEvent extends Event {
+}

core/src/main/groovy/com/muwire/core/Service.groovy

@@ -2,12 +2,12 @@ package com.muwire.core
 
 abstract class Service {
 
-	volatile boolean loaded
-	
-	abstract void load()
-	
-	void waitForLoad() {
-		while (!loaded)
-			Thread.sleep(10)
-	}
+    volatile boolean loaded
+
+    abstract void load()
+
+    void waitForLoad() {
+        while (!loaded)
+            Thread.sleep(10)
+    }
 }

core/src/main/groovy/com/muwire/core/SplitPattern.groovy

@@ -0,0 +1,7 @@
+package com.muwire.core
+
+class SplitPattern {
+    
+    public static final String SPLIT_PATTERN = "[\\*\\+\\-,\\.:;\\(\\)=_/\\\\\\!\\\"\\\'\\\$%\\|\\[\\]\\{\\}\\?]";
+    
+}

core/src/main/groovy/com/muwire/core/connection/Connection.groovy

@@ -1,7 +1,12 @@
 package com.muwire.core.connection
 
 import java.util.concurrent.BlockingQueue
+import java.util.concurrent.CountDownLatch
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
 import java.util.concurrent.LinkedBlockingQueue
+import java.util.concurrent.ThreadFactory
+import java.util.concurrent.TimeUnit
 import java.util.concurrent.atomic.AtomicBoolean
 import java.util.logging.Level
 
@@ -21,105 +26,112 @@ import net.i2p.data.Destination
 
 @Log
 abstract class Connection implements Closeable {
+    
+    private static final int SEARCHES = 10
+    private static final long INTERVAL = 1000
 
-	final EventBus eventBus
-	final Endpoint endpoint
-	final boolean incoming
-	final HostCache hostCache
+    final EventBus eventBus
+    final Endpoint endpoint
+    final boolean incoming
+    final HostCache hostCache
     final TrustService trustService
     final MuWireSettings settings
-    	
-	private final AtomicBoolean running = new AtomicBoolean()
-	private final BlockingQueue messages = new LinkedBlockingQueue()
-	private final Thread reader, writer
-	
-	protected final String name
-	
-	long lastPingSentTime, lastPongReceivedTime
-	
-	Connection(EventBus eventBus, Endpoint endpoint, boolean incoming, 
+
+    private final AtomicBoolean running = new AtomicBoolean()
+    private final BlockingQueue messages = new LinkedBlockingQueue()
+    private final Thread reader, writer
+    private final LinkedList<Long> searchTimestamps = new LinkedList<>()
+
+    protected final String name
+
+    long lastPingSentTime, lastPongReceivedTime
+
+    Connection(EventBus eventBus, Endpoint endpoint, boolean incoming,
         HostCache hostCache, TrustService trustService, MuWireSettings settings) {
-		this.eventBus = eventBus
-		this.incoming = incoming
-		this.endpoint = endpoint
-		this.hostCache = hostCache
+        this.eventBus = eventBus
+        this.incoming = incoming
+        this.endpoint = endpoint
+        this.hostCache = hostCache
         this.trustService = trustService
         this.settings = settings
-		
-		this.name = endpoint.destination.toBase32().substring(0,8)
-		
-		this.reader = new Thread({readLoop()} as Runnable)
-		this.reader.setName("reader-$name")
-		this.reader.setDaemon(true)
-		
-		this.writer = new Thread({writeLoop()} as Runnable)
-		this.writer.setName("writer-$name")
-		this.writer.setDaemon(true)
-	}
-	
-	/**
-	 * starts the connection threads
-	 */
-	void start() {
-		if (!running.compareAndSet(false, true)) {
-			log.log(Level.WARNING,"$name already running", new Exception())
-			return
-		}
-		reader.start()
-		writer.start()
-	}
-	
-	@Override
-	public void close() {
-		if (!running.compareAndSet(true, false)) {
-			log.log(Level.WARNING, "$name already closed", new Exception() )
-			return
-		}
+
+        this.name = endpoint.destination.toBase32().substring(0,8)
+
+        this.reader = new Thread({readLoop()} as Runnable)
+        this.reader.setName("reader-$name")
+        this.reader.setDaemon(true)
+
+        this.writer = new Thread({writeLoop()} as Runnable)
+        this.writer.setName("writer-$name")
+        this.writer.setDaemon(true)
+    }
+
+    /**
+     * starts the connection threads
+     */
+    void start() {
+        if (!running.compareAndSet(false, true)) {
+            log.log(Level.WARNING,"$name already running", new Exception())
+            return
+        }
+        reader.start()
+        writer.start()
+    }
+
+    @Override
+    public void close() {
+        if (!running.compareAndSet(true, false)) {
+            log.log(Level.WARNING, "$name already closed", new Exception() )
+            return
+        }
         log.info("closing $name")
-		reader.interrupt()
-		writer.interrupt()
-		endpoint.close()
-		eventBus.publish(new DisconnectionEvent(destination: endpoint.destination))
-	}
-	
-	protected void readLoop() {
-		try {
-			while(running.get()) {
-				read()
-			}
-		} catch (SocketTimeoutException e) {
+        reader.interrupt()
+        writer.interrupt()
+        endpoint.close()
+        log.info("closed $name")
+        eventBus.publish(new DisconnectionEvent(destination: endpoint.destination))
+    }
+
+    protected void readLoop() {
+        try {
+            while(running.get()) {
+                read()
+            }
+        } catch (InterruptedException ok) {
+        } catch (SocketTimeoutException e) {
         } catch (Exception e) {
             log.log(Level.WARNING,"unhandled exception in reader",e)
         } finally {
             close()
         }
-	}
-	
-	protected abstract void read()
-	
-	protected void writeLoop() {
-		try {
-			while(running.get()) {
-				def message = messages.take()
-				write(message)
-			}
-		} catch (Exception e) {
+    }
+
+    protected abstract void read()
+
+    protected void writeLoop() {
+        try {
+            while(running.get()) {
+                def message = messages.take()
+                write(message)
+            }
+        } catch (InterruptedException ok) {
+        } catch (Exception e) {
             log.log(Level.WARNING, "unhandled exception in writer",e)
         } finally {
             close()
         }
-	}
-	
-	protected abstract void write(def message);
-	
-	void sendPing() {
-		def ping = [:]
-		ping.type = "Ping"
-		ping.version = 1
-		messages.put(ping)
-		lastPingSentTime = System.currentTimeMillis()
-	}
-    
+    }
+
+    protected abstract void write(def message);
+
+    void sendPing() {
+        def ping = [:]
+        ping.type = "Ping"
+        ping.version = 1
+        messages.put(ping)
+        lastPingSentTime = System.currentTimeMillis()
+    }
+
     void sendQuery(QueryEvent e) {
         def query = [:]
         query.type = "Search"
@@ -128,6 +140,8 @@ abstract class Connection implements Closeable {
         query.firstHop = e.firstHop
         query.keywords = e.searchEvent.getSearchTerms()
         query.oobInfohash = e.searchEvent.oobInfohash
+        query.searchComments = e.searchEvent.searchComments
+        query.compressedResults = e.searchEvent.compressedResults
         if (e.searchEvent.searchHash != null)
             query.infohash = Base64.encode(e.searchEvent.searchHash)
         query.replyTo = e.replyTo.toBase64()
@@ -135,35 +149,53 @@ abstract class Connection implements Closeable {
             query.originator = e.originator.toBase64()
         messages.put(query)
     }
-	
-	protected void handlePing() {
-		log.fine("$name received ping")
-		def pong = [:]
-		pong.type = "Pong"
-		pong.version = 1
-		pong.pongs = hostCache.getGoodHosts(10).collect { d -> d.toBase64() }
-		messages.put(pong)
-	}
-	
-	protected void handlePong(def pong) {
-		log.fine("$name received pong")
-		lastPongReceivedTime = System.currentTimeMillis()
-		if (pong.pongs == null)
-			throw new Exception("Pong doesn't have pongs")
-		pong.pongs.each { 
-			def dest = new Destination(it)
-			eventBus.publish(new HostDiscoveredEvent(destination: dest))
-		}
-	}
-    
+
+    protected void handlePing() {
+        log.fine("$name received ping")
+        def pong = [:]
+        pong.type = "Pong"
+        pong.version = 1
+        pong.pongs = hostCache.getGoodHosts(10).collect { d -> d.toBase64() }
+        messages.put(pong)
+    }
+
+    protected void handlePong(def pong) {
+        log.fine("$name received pong")
+        lastPongReceivedTime = System.currentTimeMillis()
+        if (pong.pongs == null)
+            throw new Exception("Pong doesn't have pongs")
+        pong.pongs.each {
+            def dest = new Destination(it)
+            eventBus.publish(new HostDiscoveredEvent(destination: dest))
+        }
+    }
+
+    private boolean throttleSearch() {
+        final long now = System.currentTimeMillis()
+        if (searchTimestamps.size() < SEARCHES) {
+            searchTimestamps.addLast(now)
+            return false
+        }
+        Long oldest = searchTimestamps.getFirst()
+        if (now - oldest.longValue() < INTERVAL)
+            return true
+        searchTimestamps.addLast(now)
+        searchTimestamps.removeFirst()
+        false
+    }
+
     protected void handleSearch(def search) {
+        if (throttleSearch()) {
+            log.info("dropping excessive search")
+            return
+        }
         UUID uuid = UUID.fromString(search.uuid)
         byte [] infohash = null
         if (search.infohash != null) {
             search.keywords = null
             infohash = Base64.decode(search.infohash)
         }
-            
+
         Destination replyTo = new Destination(search.replyTo)
         TrustLevel trustLevel = trustService.getLevel(replyTo)
         if (trustLevel == TrustLevel.DISTRUSTED) {
@@ -174,7 +206,7 @@ abstract class Connection implements Closeable {
             log.info("dropping search from neutral peer")
             return
         }
-        
+
         Persona originator = null
         if (search.originator != null) {
             originator = new Persona(new ByteArrayInputStream(Base64.decode(search.originator)))
@@ -183,21 +215,29 @@ abstract class Connection implements Closeable {
                 return
             }
         }
-        
+
         boolean oob = false
         if (search.oobInfohash != null)
             oob = search.oobInfohash
-        
+        boolean searchComments = false
+        if (search.searchComments != null)
+            searchComments = search.searchComments
+        boolean compressedResults = false
+        if (search.compressedResults != null)
+            compressedResults = search.compressedResults
+
         SearchEvent searchEvent = new SearchEvent(searchTerms : search.keywords,
                                             searchHash : infohash,
                                             uuid : uuid,
-                                            oobInfohash : oob)
+                                            oobInfohash : oob,
+                                            searchComments : searchComments,
+                                            compressedResults : compressedResults)
         QueryEvent event = new QueryEvent ( searchEvent : searchEvent,
                                             replyTo : replyTo,
                                             originator : originator,
                                             receivedOn : endpoint.destination,
                                             firstHop : search.firstHop )
         eventBus.publish(event)
-                                            
+
     }
 }

core/src/main/groovy/com/muwire/core/connection/ConnectionAcceptor.groovy

@@ -5,17 +5,23 @@ import java.util.concurrent.ExecutorService
 import java.util.concurrent.Executors
 import java.util.logging.Level
 import java.util.zip.DeflaterOutputStream
+import java.util.zip.GZIPInputStream
+import java.util.zip.GZIPOutputStream
 import java.util.zip.InflaterInputStream
 
+import com.muwire.core.Constants
 import com.muwire.core.EventBus
 import com.muwire.core.MuWireSettings
 import com.muwire.core.Persona
+import com.muwire.core.files.FileManager
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.trust.TrustLevel
 import com.muwire.core.trust.TrustService
 import com.muwire.core.upload.UploadManager
+import com.muwire.core.util.DataUtil
 import com.muwire.core.search.InvalidSearchResultException
 import com.muwire.core.search.ResultsParser
+import com.muwire.core.search.ResultsSender
 import com.muwire.core.search.SearchManager
 import com.muwire.core.search.UIResultBatchEvent
 import com.muwire.core.search.UIResultEvent
@@ -24,177 +30,191 @@ import com.muwire.core.search.UnexpectedResultsException
 import groovy.json.JsonOutput
 import groovy.json.JsonSlurper
 import groovy.util.logging.Log
+import net.i2p.data.Base64
 
 @Log
 class ConnectionAcceptor {
 
-	final EventBus eventBus
-	final UltrapeerConnectionManager manager
-	final MuWireSettings settings
-	final I2PAcceptor acceptor
-	final HostCache hostCache
-	final TrustService trustService
-    final SearchManager searchManager 
+    final EventBus eventBus
+    final UltrapeerConnectionManager manager
+    final MuWireSettings settings
+    final I2PAcceptor acceptor
+    final HostCache hostCache
+    final TrustService trustService
+    final SearchManager searchManager
     final UploadManager uploadManager
+    final FileManager fileManager
     final ConnectionEstablisher establisher
-	
-	final ExecutorService acceptorThread
-	final ExecutorService handshakerThreads
-    
+
+    final ExecutorService acceptorThread
+    final ExecutorService handshakerThreads
+
     private volatile shutdown
-	
-	ConnectionAcceptor(EventBus eventBus, UltrapeerConnectionManager manager,
-		MuWireSettings settings, I2PAcceptor acceptor, HostCache hostCache,
-		TrustService trustService, SearchManager searchManager, UploadManager uploadManager,
-        ConnectionEstablisher establisher) {
-		this.eventBus = eventBus
-		this.manager = manager
-		this.settings = settings
-		this.acceptor = acceptor
-		this.hostCache = hostCache
-		this.trustService = trustService
+    
+    private volatile int browsed
+
+    ConnectionAcceptor(EventBus eventBus, UltrapeerConnectionManager manager,
+        MuWireSettings settings, I2PAcceptor acceptor, HostCache hostCache,
+        TrustService trustService, SearchManager searchManager, UploadManager uploadManager,
+        FileManager fileManager, ConnectionEstablisher establisher) {
+        this.eventBus = eventBus
+        this.manager = manager
+        this.settings = settings
+        this.acceptor = acceptor
+        this.hostCache = hostCache
+        this.trustService = trustService
         this.searchManager = searchManager
+        this.fileManager = fileManager
         this.uploadManager = uploadManager
-		this.establisher = establisher
-        
-		acceptorThread = Executors.newSingleThreadExecutor { r -> 
-			def rv = new Thread(r)
-			rv.setDaemon(true)
-			rv.setName("acceptor")
-			rv
-		}
-		
-		handshakerThreads = Executors.newCachedThreadPool { r ->
-			def rv = new Thread(r)
-			rv.setDaemon(true)
-			rv.setName("acceptor-processor-${System.currentTimeMillis()}")
-			rv
-		}
-	}
-	
-	void start() {
-		acceptorThread.execute({acceptLoop()} as Runnable)
-	}
-	
-	void stop() {
+        this.establisher = establisher
+
+        acceptorThread = Executors.newSingleThreadExecutor { r ->
+            def rv = new Thread(r)
+            rv.setDaemon(true)
+            rv.setName("acceptor")
+            rv
+        }
+
+        handshakerThreads = Executors.newCachedThreadPool { r ->
+            def rv = new Thread(r)
+            rv.setDaemon(true)
+            rv.setName("acceptor-processor-${System.currentTimeMillis()}")
+            rv
+        }
+    }
+
+    void start() {
+        acceptorThread.execute({acceptLoop()} as Runnable)
+    }
+
+    void stop() {
         shutdown = true
-		acceptorThread.shutdownNow()
-		handshakerThreads.shutdownNow()
-	}
-	
-	private void acceptLoop() {
+        acceptorThread.shutdownNow()
+        handshakerThreads.shutdownNow()
+    }
+
+    private void acceptLoop() {
         try {
-		while(true) {
-			def incoming = acceptor.accept()
-			log.info("accepted connection from ${incoming.destination.toBase32()}")
-			switch(trustService.getLevel(incoming.destination)) {
-				case TrustLevel.TRUSTED : break
-				case TrustLevel.NEUTRAL :
-					if (settings.allowUntrusted())
-						break
-				case TrustLevel.DISTRUSTED :
-					log.info("Disallowing distrusted connection")
-					incoming.close()
-					continue
-			}
-			handshakerThreads.execute({processIncoming(incoming)} as Runnable)
-		}
+        while(true) {
+            def incoming = acceptor.accept()
+            log.info("accepted connection from ${incoming.destination.toBase32()}")
+            switch(trustService.getLevel(incoming.destination)) {
+                case TrustLevel.TRUSTED : break
+                case TrustLevel.NEUTRAL :
+                    if (settings.allowUntrusted())
+                        break
+                case TrustLevel.DISTRUSTED :
+                    log.info("Disallowing distrusted connection")
+                    incoming.close()
+                    continue
+            }
+            handshakerThreads.execute({processIncoming(incoming)} as Runnable)
+        }
         } catch (Exception e) {
             log.log(Level.WARNING, "exception in accept loop",e)
             if (!shutdown)
                 throw e
         }
-	}
-	
-	private void processIncoming(Endpoint e) {
-		InputStream is = e.inputStream
-		try {
-			int read = is.read()
-			switch(read) {
-				case (byte)'M':
+    }
+
+    private void processIncoming(Endpoint e) {
+        InputStream is = e.inputStream
+        try {
+            int read = is.read()
+            switch(read) {
+                case (byte)'M':
                     if (settings.isLeaf())
                         throw new IOException("Incoming connection as leaf")
-					processMuWire(e)
-					break
-				case (byte)'G':
-					processGET(e)
-					break
+                    processMuWire(e)
+                    break
+                case (byte)'G':
+                    processGET(e)
+                    break
                 case (byte)'H':
                     processHashList(e)
                     break
                 case (byte)'P':
                     processPOST(e)
                     break
-				default:
-					throw new Exception("Invalid read $read")
-			}
-		} catch (Exception ex) {
-			log.log(Level.WARNING, "incoming connection failed",ex)
-			e.close()
-			eventBus.publish new ConnectionEvent(endpoint: e, incoming: true, leaf: null, status: ConnectionAttemptStatus.FAILED)
-		}
-	}
-	
-	private void processMuWire(Endpoint e) {
-		byte[] uWire = "uWire ".bytes
-		for (int i = 0; i < uWire.length; i++) {
-			int read = e.inputStream.read()
-			if (read != uWire[i]) {
-				throw new IOException("unexpected value $read at position $i")
-			}
-		}
-        
-		byte[] type = new byte[4]
-		DataInputStream dis = new DataInputStream(e.inputStream)
-		dis.readFully(type)
-                
+                case (byte)'R':
+                    processRESULTS(e)
+                    break
+                case (byte)'T':
+                    processTRUST(e)
+                    break
+                case (byte)'B':
+                    processBROWSE(e)
+                    break
+                default:
+                    throw new Exception("Invalid read $read")
+            }
+        } catch (Exception ex) {
+            log.log(Level.WARNING, "incoming connection failed",ex)
+            e.close()
+            eventBus.publish new ConnectionEvent(endpoint: e, incoming: true, leaf: null, status: ConnectionAttemptStatus.FAILED)
+        }
+    }
+
+    private void processMuWire(Endpoint e) {
+        byte[] uWire = "uWire ".bytes
+        for (int i = 0; i < uWire.length; i++) {
+            int read = e.inputStream.read()
+            if (read != uWire[i]) {
+                throw new IOException("unexpected value $read at position $i")
+            }
+        }
+
+        byte[] type = new byte[4]
+        DataInputStream dis = new DataInputStream(e.inputStream)
+        dis.readFully(type)
+
         if (type == "leaf".bytes)
             handleIncoming(e, true)
         else if (type == "peer".bytes)
             handleIncoming(e, false)
-        else 
+        else
             throw new IOException("unknown connection type $type")
     }
 
-	private void handleIncoming(Endpoint e, boolean leaf) {
-		boolean accept = !manager.isConnected(e.destination) && 
+    private void handleIncoming(Endpoint e, boolean leaf) {
+        boolean accept = !manager.isConnected(e.destination) &&
             !establisher.isInProgress(e.destination) &&
             (leaf ? manager.hasLeafSlots() : manager.hasPeerSlots())
-		if (accept) {
-			log.info("accepting connection, leaf:$leaf")
-			e.outputStream.write("OK".bytes)
-			e.outputStream.flush()
-			def wrapped = new Endpoint(e.destination, new InflaterInputStream(e.inputStream), new DeflaterOutputStream(e.outputStream, true), e.toClose)
-			eventBus.publish(new ConnectionEvent(endpoint: wrapped, incoming: true, leaf: leaf, status: ConnectionAttemptStatus.SUCCESSFUL))
-		} else {
-			log.info("rejecting connection, leaf:$leaf")
-			e.outputStream.write("REJECT".bytes)
-			def hosts = hostCache.getGoodHosts(10)
-			if (!hosts.isEmpty()) {
-				def json = [:]
-				json.tryHosts = hosts.collect { d -> d.toBase64() }
-				json = JsonOutput.toJson(json)
-				def os = new DataOutputStream(e.outputStream)
-				os.writeShort(json.bytes.length)
-				os.write(json.bytes)
-			}
-			e.outputStream.flush()
-			e.close()
-			eventBus.publish(new ConnectionEvent(endpoint: e, incoming: true, leaf: leaf, status: ConnectionAttemptStatus.REJECTED))
-		}
-	}
-	
-	
-	
-	private void processGET(Endpoint e) {
+        if (accept) {
+            log.info("accepting connection, leaf:$leaf")
+            e.outputStream.write("OK".bytes)
+            e.outputStream.flush()
+            def wrapped = new Endpoint(e.destination, new InflaterInputStream(e.inputStream), new DeflaterOutputStream(e.outputStream, true), e.toClose)
+            eventBus.publish(new ConnectionEvent(endpoint: wrapped, incoming: true, leaf: leaf, status: ConnectionAttemptStatus.SUCCESSFUL))
+        } else {
+            log.info("rejecting connection, leaf:$leaf")
+            e.outputStream.write("REJECT".bytes)
+            def hosts = hostCache.getGoodHosts(10)
+            if (!hosts.isEmpty()) {
+                def json = [:]
+                json.tryHosts = hosts.collect { d -> d.toBase64() }
+                json = JsonOutput.toJson(json)
+                def os = new DataOutputStream(e.outputStream)
+                os.writeShort(json.bytes.length)
+                os.write(json.bytes)
+            }
+            e.outputStream.flush()
+            e.close()
+            eventBus.publish(new ConnectionEvent(endpoint: e, incoming: true, leaf: leaf, status: ConnectionAttemptStatus.REJECTED))
+        }
+    }
+
+
+
+    private void processGET(Endpoint e) {
         byte[] et = new byte[3]
         final DataInputStream dis = new DataInputStream(e.getInputStream())
         dis.readFully(et)
         if (et != "ET ".getBytes(StandardCharsets.US_ASCII))
             throw new IOException("Invalid GET connection")
         uploadManager.processGET(e)
-	}
-    
+    }
+
     private void processHashList(Endpoint e) {
         byte[] ashList = new byte[8]
         final DataInputStream dis = new DataInputStream(e.getInputStream())
@@ -203,7 +223,7 @@ class ConnectionAcceptor {
             throw new IOException("Invalid HASHLIST connection")
         uploadManager.processHashList(e)
     }
-    
+
     private void processPOST(final Endpoint e) throws IOException {
         byte [] ost = new byte[4]
         final DataInputStream dis = new DataInputStream(e.getInputStream())
@@ -225,7 +245,7 @@ class ConnectionAcceptor {
 
             Persona sender = new Persona(dis)
             if (sender.destination != e.getDestination())
-                throw new IOException("Sender destination mismatch expected $e.getDestination(), got $sender.destination")
+                throw new IOException("Sender destination mismatch expected ${e.getDestination()}, got $sender.destination")
             int nResults = dis.readUnsignedShort()
             UIResultEvent[] results = new UIResultEvent[nResults]
             for (int i = 0; i < nResults; i++) {
@@ -242,5 +262,149 @@ class ConnectionAcceptor {
             e.close()
         }
     }
-	
+    
+    private void processRESULTS(Endpoint e) {
+        InputStream is = e.getInputStream()
+        DataInputStream dis = new DataInputStream(is)
+        byte[] esults = new byte[7]
+        dis.readFully(esults)
+        if (esults != "ESULTS ".getBytes(StandardCharsets.US_ASCII))
+            throw new IOException("Invalid RESULTS connection")
+            
+        JsonSlurper slurper = new JsonSlurper()
+        try {
+            String uuid = DataUtil.readTillRN(dis)
+            UUID resultsUUID = UUID.fromString(uuid)
+            if (!searchManager.hasLocalSearch(resultsUUID))
+                throw new UnexpectedResultsException(resultsUUID.toString())
+            
+                
+            // parse all headers
+            Map<String,String> headers = new HashMap<>()
+            String header
+            while((header = DataUtil.readTillRN(is)) != "" && headers.size() < Constants.MAX_HEADERS) {
+                int colon = header.indexOf(':')
+                if (colon == -1 || colon == header.length() - 1)
+                    throw new IOException("invalid header $header")
+                String key = header.substring(0, colon)
+                String value = header.substring(colon + 1)
+                headers[key] = value.trim()
+            }
+            
+            if (!headers.containsKey("Sender"))
+                throw new IOException("No Sender header")
+            if (!headers.containsKey("Count"))
+                throw new IOException("No Count header")
+                
+            byte [] personaBytes = Base64.decode(headers['Sender'])
+            Persona sender = new Persona(new ByteArrayInputStream(personaBytes))
+            if (sender.destination != e.getDestination())
+                throw new IOException("Sender destination mismatch expected ${e.getDestination()}, got $sender.destination")
+                
+            int nResults = Integer.parseInt(headers['Count'])
+            if (nResults > Constants.MAX_RESULTS)
+                throw new IOException("too many results $nResults")
+                
+            dis = new DataInputStream(new GZIPInputStream(dis))
+            UIResultEvent[] results = new UIResultEvent[nResults]
+            for (int i = 0; i < nResults; i++) {
+                int jsonSize = dis.readUnsignedShort()
+                byte [] payload = new byte[jsonSize]
+                dis.readFully(payload)
+                def json = slurper.parse(payload)
+                results[i] = ResultsParser.parse(sender, resultsUUID, json)
+            }
+            eventBus.publish(new UIResultBatchEvent(uuid: resultsUUID, results: results))
+        } catch (IOException bad) {
+            log.log(Level.WARNING, "failed to process RESULTS", bad)
+        } finally {
+            e.close()
+        }
+            
+    }
+    
+    private void processBROWSE(Endpoint e) {
+        try {
+            byte [] rowse = new byte[7]
+            DataInputStream dis = new DataInputStream(e.getInputStream())
+            dis.readFully(rowse)
+            if (rowse != "ROWSE\r\n".getBytes(StandardCharsets.US_ASCII))
+                throw new IOException("Invalid BROWSE connection")
+            String header
+            while ((header = DataUtil.readTillRN(dis)) != ""); // ignore headers for now
+
+            OutputStream os = e.getOutputStream()
+            if (!settings.browseFiles) {
+                os.write("403 Not Allowed\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+                os.flush()
+                e.close()
+                return
+            }
+
+            browsed++
+            
+            os.write("200 OK\r\n".getBytes(StandardCharsets.US_ASCII))
+
+            def sharedFiles = fileManager.getSharedFiles().values()
+
+            os.write("Count: ${sharedFiles.size()}\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+
+            DataOutputStream dos = new DataOutputStream(new GZIPOutputStream(os))
+            JsonOutput jsonOutput = new JsonOutput()
+            sharedFiles.each {
+                it.hit()
+                def obj = ResultsSender.sharedFileToObj(it, false)
+                def json = jsonOutput.toJson(obj)
+                dos.writeShort((short)json.length())
+                dos.write(json.getBytes(StandardCharsets.US_ASCII))
+            }
+            dos.flush()
+            dos.close()
+        } finally {
+            e.close()
+        }
+    }
+
+    private void processTRUST(Endpoint e) {
+        try {
+            byte[] RUST = new byte[6]
+            DataInputStream dis = new DataInputStream(e.getInputStream())
+            dis.readFully(RUST)
+            if (RUST != "RUST\r\n".getBytes(StandardCharsets.US_ASCII))
+                throw new IOException("Invalid TRUST connection")
+            String header
+            while ((header = DataUtil.readTillRN(dis)) != ""); // ignore headers for now
+
+                OutputStream os = e.getOutputStream()
+            if (!settings.allowTrustLists) {
+                os.write("403 Not Allowed\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+                os.flush()
+                e.close()
+                return
+            }
+
+            os.write("200 OK\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+            List<Persona> good = new ArrayList<>(trustService.good.values())
+            int size = Math.min(Short.MAX_VALUE * 2, good.size())
+            good = good.subList(0, size)
+            DataOutputStream dos = new DataOutputStream(os)
+            dos.writeShort(size)
+            good.each {
+                it.write(dos)
+            }
+
+            List<Persona> bad = new ArrayList<>(trustService.bad.values())
+            size = Math.min(Short.MAX_VALUE * 2, bad.size())
+            bad = bad.subList(0, size)
+            dos.writeShort(size)
+            bad.each {
+                it.write(dos)
+            }
+
+            dos.flush()
+        } finally {
+            e.close()
+        }
+    }
+
 }

core/src/main/groovy/com/muwire/core/connection/ConnectionEstablisher.groovy

@@ -21,164 +21,171 @@ import net.i2p.util.ConcurrentHashSet
 
 @Log
 class ConnectionEstablisher {
-	
-	private static final int CONCURRENT = 4
 
-	final EventBus eventBus
-	final I2PConnector i2pConnector
-	final MuWireSettings settings
-	final ConnectionManager connectionManager
-	final HostCache hostCache
-	
-	final Timer timer
-	final ExecutorService executor
-	
-	final Set inProgress = new ConcurrentHashSet()
-	
+    private static final int CONCURRENT = 4
+
+    final EventBus eventBus
+    final I2PConnector i2pConnector
+    final MuWireSettings settings
+    final ConnectionManager connectionManager
+    final HostCache hostCache
+
+    final Timer timer
+    final ExecutorService executor, closer
+
+    final Set inProgress = new ConcurrentHashSet()
+
     ConnectionEstablisher(){}
-    
-	ConnectionEstablisher(EventBus eventBus, I2PConnector i2pConnector, MuWireSettings settings,
-		ConnectionManager connectionManager, HostCache hostCache) {
-		this.eventBus = eventBus
-		this.i2pConnector = i2pConnector
-		this.settings = settings
-		this.connectionManager = connectionManager
-		this.hostCache = hostCache
-		timer = new Timer("connection-timer",true)
-		executor = Executors.newFixedThreadPool(CONCURRENT, { r -> 
-			def rv = new Thread(r)
-			rv.setDaemon(true)
-			rv.setName("connector-${System.currentTimeMillis()}")
-			rv 
-		} as ThreadFactory)
-	}
-	
-	void start() {
-		timer.schedule({connectIfNeeded()} as TimerTask, 100, 1000)
-	}
-	
-	void stop() {
-		timer.cancel()
-		executor.shutdownNow()
-	}
-	
-	private void connectIfNeeded() {
-		if (!connectionManager.needsConnections())
-			return
-		if (inProgress.size() >= CONCURRENT)
-			return
 
-		def toTry = null
-		for (int i = 0; i < 5; i++) {
-			toTry = hostCache.getHosts(1)
-			if (toTry.isEmpty())
-				return
-			toTry = toTry[0]
-			if (!connectionManager.isConnected(toTry) &&
-				!inProgress.contains(toTry)) {
-				break
-			}
-		}
-		if (toTry == null)
-			return
-		if (!connectionManager.isConnected(toTry) && inProgress.add(toTry))
-			executor.execute({connect(toTry)} as Runnable)
-	}
-	
-	private void connect(Destination toTry) {
-		log.info("starting connect to ${toTry.toBase32()}")
-		try {
-			def endpoint = i2pConnector.connect(toTry)
-			log.info("successful transport connect to ${toTry.toBase32()}")
-			
-			// outgoing handshake
-			endpoint.outputStream.write("MuWire ".bytes)
-			def type = settings.isLeaf() ? "leaf" : "peer"
-			endpoint.outputStream.write(type.bytes)
-			endpoint.outputStream.flush()
-			
-			InputStream is = endpoint.inputStream
-			int read = is.read()
-			if (read == -1) {
-				fail endpoint
-				return
-			}
-			switch(read) {
-				case (byte)'O': readK(endpoint); break
-				case (byte)'R': readEJECT(endpoint); break
-				default :
-					log.warning("unknown response $read")
-					fail endpoint
-			}
-		} catch (Exception e) {
-			log.log(Level.WARNING, "Couldn't connect to ${toTry.toBase32()}", e)
-			def endpoint = new Endpoint(toTry, null, null, null)
-			fail(endpoint)
-		} finally {
-			inProgress.remove(toTry)
-		}
-	}
-	
-	private void fail(Endpoint endpoint) {
-		endpoint.close()
-		eventBus.publish(new ConnectionEvent(endpoint: endpoint, incoming: false, leaf: false, status: ConnectionAttemptStatus.FAILED))
-	}
-	
-	private void readK(Endpoint e) {
-		int read = e.inputStream.read()
-		if (read != 'K') {
-			log.warning("unknown response after O: $read")
-			fail e
-			return
-		}
-		
-		log.info("connection to ${e.destination.toBase32()} established")
-		
-		// wrap into deflater / inflater streams and publish
-		def wrapped = new Endpoint(e.destination, new InflaterInputStream(e.inputStream), new DeflaterOutputStream(e.outputStream, true), e.toClose)
-		eventBus.publish(new ConnectionEvent(endpoint: wrapped, incoming: false, leaf: false, status: ConnectionAttemptStatus.SUCCESSFUL))
-	}
-	
-	private void readEJECT(Endpoint e) {
-		byte[] eject = "EJECT".bytes
-		for (int i = 0; i < eject.length; i++) {
-			int read = e.inputStream.read()
-			if (read != eject[i]) {
-				log.warning("Unknown response after R at position $i")
-				fail e
-				return
-			}
-		}
-		log.info("connection to ${e.destination.toBase32()} rejected")
-		
-		
-		eventBus.publish(new ConnectionEvent(endpoint: e, incoming: false, leaf: false, status: ConnectionAttemptStatus.REJECTED))
-		try {
-			DataInputStream dais = new DataInputStream(e.inputStream)
-			int payloadSize = dais.readUnsignedShort()
-			byte[] payload = new byte[payloadSize]
-			dais.readFully(payload)
+    ConnectionEstablisher(EventBus eventBus, I2PConnector i2pConnector, MuWireSettings settings,
+        ConnectionManager connectionManager, HostCache hostCache) {
+        this.eventBus = eventBus
+        this.i2pConnector = i2pConnector
+        this.settings = settings
+        this.connectionManager = connectionManager
+        this.hostCache = hostCache
+        timer = new Timer("connection-timer",true)
+        executor = Executors.newFixedThreadPool(CONCURRENT, { r ->
+            def rv = new Thread(r)
+            rv.setDaemon(true)
+            rv.setName("connector-${System.currentTimeMillis()}")
+            rv
+        } as ThreadFactory)
+        
+        closer = Executors.newSingleThreadExecutor()
+    }
 
-			def json = new JsonSlurper()
-			json = json.parse(payload)
+    void start() {
+        timer.schedule({connectIfNeeded()} as TimerTask, 100, 1000)
+    }
 
-			if (json.tryHosts == null) {
-				log.warning("post-rejection json didn't contain hosts to try")
-				return
-			}
+    void stop() {
+        timer.cancel()
+        executor.shutdownNow()
+        closer.shutdownNow()
+    }
+
+    private void connectIfNeeded() {
+        if (!connectionManager.needsConnections())
+            return
+        if (inProgress.size() >= CONCURRENT)
+            return
+
+        def toTry = null
+        for (int i = 0; i < 5; i++) {
+            toTry = hostCache.getHosts(1)
+            if (toTry.isEmpty())
+                return
+            toTry = toTry[0]
+            if (!connectionManager.isConnected(toTry) &&
+                !inProgress.contains(toTry)) {
+                break
+            }
+        }
+        if (toTry == null)
+            return
+        if (!connectionManager.isConnected(toTry) && inProgress.add(toTry))
+            executor.execute({connect(toTry)} as Runnable)
+    }
+
+    private void connect(Destination toTry) {
+        log.info("starting connect to ${toTry.toBase32()}")
+        try {
+            def endpoint = i2pConnector.connect(toTry)
+            log.info("successful transport connect to ${toTry.toBase32()}")
+
+            // outgoing handshake
+            endpoint.outputStream.write("MuWire ".bytes)
+            def type = settings.isLeaf() ? "leaf" : "peer"
+            endpoint.outputStream.write(type.bytes)
+            endpoint.outputStream.flush()
+
+            InputStream is = endpoint.inputStream
+            int read = is.read()
+            if (read == -1) {
+                fail endpoint
+                return
+            }
+            switch(read) {
+                case (byte)'O': readK(endpoint); break
+                case (byte)'R': readEJECT(endpoint); break
+                default :
+                    log.warning("unknown response $read")
+                    fail endpoint
+            }
+        } catch (Exception e) {
+            log.log(Level.WARNING, "Couldn't connect to ${toTry.toBase32()}", e)
+            def endpoint = new Endpoint(toTry, null, null, null)
+            fail(endpoint)
+        } finally {
+            inProgress.remove(toTry)
+        }
+    }
+
+    private void fail(Endpoint endpoint) {
+        if (!closer.isShutdown()) {
+            closer.execute {
+                endpoint.close()
+                eventBus.publish(new ConnectionEvent(endpoint: endpoint, incoming: false, leaf: false, status: ConnectionAttemptStatus.FAILED))
+            } as Runnable
+        }
+    }
+
+    private void readK(Endpoint e) {
+        int read = e.inputStream.read()
+        if (read != 'K') {
+            log.warning("unknown response after O: $read")
+            fail e
+            return
+        }
+
+        log.info("connection to ${e.destination.toBase32()} established")
+
+        // wrap into deflater / inflater streams and publish
+        def wrapped = new Endpoint(e.destination, new InflaterInputStream(e.inputStream), new DeflaterOutputStream(e.outputStream, true), e.toClose)
+        eventBus.publish(new ConnectionEvent(endpoint: wrapped, incoming: false, leaf: false, status: ConnectionAttemptStatus.SUCCESSFUL))
+    }
+
+    private void readEJECT(Endpoint e) {
+        byte[] eject = "EJECT".bytes
+        for (int i = 0; i < eject.length; i++) {
+            int read = e.inputStream.read()
+            if (read != eject[i]) {
+                log.warning("Unknown response after R at position $i")
+                fail e
+                return
+            }
+        }
+        log.info("connection to ${e.destination.toBase32()} rejected")
+
+
+        eventBus.publish(new ConnectionEvent(endpoint: e, incoming: false, leaf: false, status: ConnectionAttemptStatus.REJECTED))
+        try {
+            DataInputStream dais = new DataInputStream(e.inputStream)
+            int payloadSize = dais.readUnsignedShort()
+            byte[] payload = new byte[payloadSize]
+            dais.readFully(payload)
+
+            def json = new JsonSlurper()
+            json = json.parse(payload)
+
+            if (json.tryHosts == null) {
+                log.warning("post-rejection json didn't contain hosts to try")
+                return
+            }
+
+            json.tryHosts.asList().each {
+                Destination suggested = new Destination(it)
+                eventBus.publish(new HostDiscoveredEvent(destination: suggested))
+            }
+        } catch (Exception ignore) {
+            log.log(Level.WARNING,"Problem parsing post-rejection payload",ignore)
+        } finally {
+            // the end
+            closer.execute({e.close()} as Runnable)
+        }
+    }
 
-			json.tryHosts.asList().each {
-				Destination suggested = new Destination(it)
-				eventBus.publish(new HostDiscoveredEvent(destination: suggested))
-			}
-		} catch (Exception ignore) {
-			log.log(Level.WARNING,"Problem parsing post-rejection payload",ignore)
-		} finally {
-			// the end
-			e.close()
-		}
-	}
-    
     public boolean isInProgress(Destination d) {
         inProgress.contains(d)
     }

core/src/main/groovy/com/muwire/core/connection/ConnectionEvent.groovy

@@ -6,14 +6,14 @@ import net.i2p.data.Destination
 
 class ConnectionEvent extends Event {
 
-	Endpoint endpoint
-	boolean incoming
-	Boolean leaf // can be null if uknown
-	ConnectionAttemptStatus status
-	
-	@Override
-	public String toString() {
-		"ConnectionEvent ${super.toString()} endpoint: $endpoint incoming: $incoming leaf : $leaf status : $status"
-	}
+    Endpoint endpoint
+    boolean incoming
+    Boolean leaf // can be null if uknown
+    ConnectionAttemptStatus status
+
+    @Override
+    public String toString() {
+        "ConnectionEvent ${super.toString()} endpoint: $endpoint incoming: $incoming leaf : $leaf status : $status"
+    }
 
 }

core/src/main/groovy/com/muwire/core/connection/ConnectionManager.groovy

@@ -11,64 +11,61 @@ import com.muwire.core.trust.TrustLevel
 import net.i2p.data.Destination
 
 abstract class ConnectionManager {
-	
-	private static final int PING_TIME = 20000
 
-	final EventBus eventBus
-	
-	private final Timer timer
-	
-	protected final HostCache hostCache
+    private static final int PING_TIME = 20000
+
+    final EventBus eventBus
+
+    private final Timer timer
+
+    protected final HostCache hostCache
     protected final Persona me
     protected final MuWireSettings settings
-	
-	ConnectionManager() {}
-	
-	ConnectionManager(EventBus eventBus, Persona me, HostCache hostCache, MuWireSettings settings) {
-		this.eventBus = eventBus
+
+    ConnectionManager() {}
+
+    ConnectionManager(EventBus eventBus, Persona me, HostCache hostCache, MuWireSettings settings) {
+        this.eventBus = eventBus
         this.me = me
-		this.hostCache = hostCache
+        this.hostCache = hostCache
         this.settings = settings
-		this.timer = new Timer("connections-pinger",true)
-	}
-	
-	void start() {
-		timer.schedule({sendPings()} as TimerTask, 1000,1000)
-	}
-	
-	void stop() {
-		timer.cancel()
-		getConnections().each { it.close() }
-	}
-	
-	void onTrustEvent(TrustEvent e) {
-		if (e.level == TrustLevel.DISTRUSTED)
-			drop(e.persona.destination)
-	}
-    
-	abstract void drop(Destination d)
-	
-	abstract Collection<Connection> getConnections()
-	
-	protected abstract int getDesiredConnections()
-	
-	boolean needsConnections() {
-		return getConnections().size() < getDesiredConnections()
-	}
-	
-	abstract boolean isConnected(Destination d)
-	
-	abstract void onConnectionEvent(ConnectionEvent e)
-	
-	abstract void onDisconnectionEvent(DisconnectionEvent e)
-    
-    abstract void shutdown()
-	
-	protected void sendPings() {
-		final long now = System.currentTimeMillis()
-		getConnections().each { 
-			if (now - it.lastPingSentTime > PING_TIME)
-				it.sendPing()
-		}
-	}
+        this.timer = new Timer("connections-pinger",true)
+    }
+
+    void start() {
+        timer.schedule({sendPings()} as TimerTask, 1000,1000)
+    }
+
+    void shutdown() {
+        timer.cancel()
+    }
+
+    void onTrustEvent(TrustEvent e) {
+        if (e.level == TrustLevel.DISTRUSTED)
+            drop(e.persona.destination)
+    }
+
+    abstract void drop(Destination d)
+
+    abstract Collection<Connection> getConnections()
+
+    protected abstract int getDesiredConnections()
+
+    boolean needsConnections() {
+        return getConnections().size() < getDesiredConnections()
+    }
+
+    abstract boolean isConnected(Destination d)
+
+    abstract void onConnectionEvent(ConnectionEvent e)
+
+    abstract void onDisconnectionEvent(DisconnectionEvent e)
+
+    protected void sendPings() {
+        final long now = System.currentTimeMillis()
+        getConnections().each {
+            if (now - it.lastPingSentTime > PING_TIME)
+                it.sendPing()
+        }
+    }
 }

core/src/main/groovy/com/muwire/core/connection/DisconnectionEvent.groovy

@@ -5,11 +5,11 @@ import com.muwire.core.Event
 import net.i2p.data.Destination
 
 class DisconnectionEvent extends Event {
-	
-	Destination destination
 
-	@Override
-	public String toString() {
-		"DisconnectionEvent ${super.toString()} destination:${destination.toBase32()}"
-	}
+    Destination destination
+
+    @Override
+    public String toString() {
+        "DisconnectionEvent ${super.toString()} destination:${destination.toBase32()}"
+    }
 }

core/src/main/groovy/com/muwire/core/connection/Endpoint.groovy

@@ -8,39 +8,36 @@ import net.i2p.data.Destination
 
 @Log
 class Endpoint implements Closeable {
-	final Destination destination
-	final InputStream inputStream
-	final OutputStream outputStream
+    final Destination destination
+    final InputStream inputStream
+    final OutputStream outputStream
     final def toClose
-	
-	private final AtomicBoolean closed = new AtomicBoolean()
-	
-	Endpoint(Destination destination, InputStream inputStream, OutputStream outputStream, def toClose) {
-		this.destination = destination
-		this.inputStream = inputStream
-		this.outputStream = outputStream
+
+    private final AtomicBoolean closed = new AtomicBoolean()
+
+    Endpoint(Destination destination, InputStream inputStream, OutputStream outputStream, def toClose) {
+        this.destination = destination
+        this.inputStream = inputStream
+        this.outputStream = outputStream
         this.toClose = toClose
-	}
-	
-	@Override
-	public void close() {
-		if (!closed.compareAndSet(false, true)) {
-			log.log(Level.WARNING,"Close loop detected for ${destination.toBase32()}", new Exception())
-			return
-		}
-		if (inputStream != null) {
-			try {inputStream.close()} catch (Exception ignore) {}
-		}
-		if (outputStream != null) {
-			try {outputStream.close()} catch (Exception ignore) {}
-		}
+    }
+
+    @Override
+    public void close() {
+        if (!closed.compareAndSet(false, true)) {
+            log.log(Level.WARNING,"Close loop detected for ${destination.toBase32()}", new Exception())
+            return
+        }
+        if (inputStream != null) {
+            try {inputStream.close()} catch (Exception ignore) {}
+        }
         if (toClose != null) {
             try {toClose.reset()} catch (Exception ignore) {}
         }
-	}
-	
-	@Override
-	public String toString() {
-		"destination: ${destination.toBase32()}"
-	}
-} 
+    }
+
+    @Override
+    public String toString() {
+        "destination: ${destination.toBase32()}"
+    }
+}

core/src/main/groovy/com/muwire/core/connection/I2PAcceptor.groovy

@@ -5,18 +5,18 @@ import net.i2p.client.streaming.I2PSocketManager
 
 class I2PAcceptor {
 
-	final I2PSocketManager socketManager
-	final I2PServerSocket serverSocket
-	
-	I2PAcceptor() {}
-	
-	I2PAcceptor(I2PSocketManager socketManager) {
-		this.socketManager = socketManager
-		this.serverSocket = socketManager.getServerSocket()
-	}
-	
-	Endpoint accept() {
-		def socket = serverSocket.accept()
-		new Endpoint(socket.getPeerDestination(), socket.getInputStream(), socket.getOutputStream(), socket)
-	}
+    final I2PSocketManager socketManager
+    final I2PServerSocket serverSocket
+
+    I2PAcceptor() {}
+
+    I2PAcceptor(I2PSocketManager socketManager) {
+        this.socketManager = socketManager
+        this.serverSocket = socketManager.getServerSocket()
+    }
+
+    Endpoint accept() {
+        def socket = serverSocket.accept()
+        new Endpoint(socket.getPeerDestination(), socket.getInputStream(), socket.getOutputStream(), socket)
+    }
 }

core/src/main/groovy/com/muwire/core/connection/I2PConnector.groovy

@@ -4,18 +4,18 @@ import net.i2p.client.streaming.I2PSocketManager
 import net.i2p.data.Destination
 
 class I2PConnector {
-	
-	final I2PSocketManager socketManager
-	
-	I2PConnector() {}
-	
-	I2PConnector(I2PSocketManager socketManager) {
-		this.socketManager = socketManager
-	}
-	
-	Endpoint connect(Destination dest) {
-		def socket = socketManager.connect(dest)
-		new Endpoint(dest, socket.getInputStream(), socket.getOutputStream(), socket)
-	}
+
+    final I2PSocketManager socketManager
+
+    I2PConnector() {}
+
+    I2PConnector(I2PSocketManager socketManager) {
+        this.socketManager = socketManager
+    }
+
+    Endpoint connect(Destination dest) {
+        def socket = socketManager.connect(dest)
+        new Endpoint(dest, socket.getInputStream(), socket.getOutputStream(), socket)
+    }
 
 }

core/src/main/groovy/com/muwire/core/connection/LeafConnection.groovy

@@ -11,27 +11,27 @@ import com.muwire.core.trust.TrustService
 import net.i2p.data.Destination
 
 /**
- * Connection where the other side is a leaf. 
+ * Connection where the other side is a leaf.
  * Such connections can only be incoming.
  * @author zab
  */
 class LeafConnection extends Connection {
 
-	public LeafConnection(EventBus eventBus, Endpoint endpoint, HostCache hostCache, 
+    public LeafConnection(EventBus eventBus, Endpoint endpoint, HostCache hostCache,
         TrustService trustService, MuWireSettings settings) {
-		super(eventBus, endpoint, true, hostCache, trustService, settings);
-	}
+        super(eventBus, endpoint, true, hostCache, trustService, settings);
+    }
 
-	@Override
-	protected void read() {
-		// TODO Auto-generated method stub
-		
-	}
+    @Override
+    protected void read() {
+        // TODO Auto-generated method stub
 
-	@Override
-	protected void write(Object message) {
-		// TODO Auto-generated method stub
-		
-	}
+    }
+
+    @Override
+    protected void write(Object message) {
+        // TODO Auto-generated method stub
+
+    }
 
 }

core/src/main/groovy/com/muwire/core/connection/LeafConnectionManager.groovy

@@ -13,68 +13,68 @@ import net.i2p.data.Destination
 
 @Log
 class LeafConnectionManager extends ConnectionManager {
-	
-	final int maxConnections
-	
-	final Map<Destination, UltrapeerConnection> connections = new ConcurrentHashMap()
-	
-	public LeafConnectionManager(EventBus eventBus, Persona me, int maxConnections, 
+
+    final int maxConnections
+
+    final Map<Destination, UltrapeerConnection> connections = new ConcurrentHashMap()
+
+    public LeafConnectionManager(EventBus eventBus, Persona me, int maxConnections,
         HostCache hostCache, MuWireSettings settings) {
-		super(eventBus, me, hostCache, settings)
-		this.maxConnections = maxConnections
-	}
-	
-	@Override
-	public void drop(Destination d) {
-		// TODO Auto-generated method stub
-		
-	}
-    
+        super(eventBus, me, hostCache, settings)
+        this.maxConnections = maxConnections
+    }
+
+    @Override
+    public void drop(Destination d) {
+        // TODO Auto-generated method stub
+
+    }
+
     void onQueryEvent(QueryEvent e) {
         if (me.destination == e.receivedOn) {
             connections.values().each { it.sendQuery(e) }
         }
-            
+
     }
 
-	@Override
-	public Collection<Connection> getConnections() {
-		connections.values()
-	}
+    @Override
+    public Collection<Connection> getConnections() {
+        connections.values()
+    }
 
-	@Override
-	protected int getDesiredConnections() {
-		return maxConnections;
-	}
+    @Override
+    protected int getDesiredConnections() {
+        return maxConnections;
+    }
 
-	@Override
-	public boolean isConnected(Destination d) {
-		connections.containsKey(d)
-	}
+    @Override
+    public boolean isConnected(Destination d) {
+        connections.containsKey(d)
+    }
+
+    @Override
+    public void onConnectionEvent(ConnectionEvent e) {
+        if (e.incoming || e.leaf) {
+            log.severe("Got inconsistent event as a leaf! $e")
+            return
+        }
+        if (e.status != ConnectionAttemptStatus.SUCCESSFUL)
+            return
+
+        Connection c = new UltrapeerConnection(eventBus, e.endpoint)
+        connections.put(e.endpoint.destination, c)
+        c.start()
+    }
+
+    @Override
+    public void onDisconnectionEvent(DisconnectionEvent e) {
+        def removed = connections.remove(e.destination)
+        if (removed == null)
+            log.severe("removed destination not present in connection manager ${e.destination.toBase32()}")
+    }
 
-	@Override
-	public void onConnectionEvent(ConnectionEvent e) {
-		if (e.incoming || e.leaf) {
-			log.severe("Got inconsistent event as a leaf! $e")
-			return
-		}
-		if (e.status != ConnectionAttemptStatus.SUCCESSFUL)
-			return
-			
-		Connection c = new UltrapeerConnection(eventBus, e.endpoint)
-		connections.put(e.endpoint.destination, c)
-		c.start()
-	}
-	
-	@Override 
-	public void onDisconnectionEvent(DisconnectionEvent e) {
-		def removed = connections.remove(e.destination)
-		if (removed == null)
-			log.severe("removed destination not present in connection manager ${e.destination.toBase32()}")
-	}
-	
     @Override
     void shutdown() {
-        
+
     }
 }

core/src/main/groovy/com/muwire/core/connection/PeerConnection.groovy

@@ -20,63 +20,63 @@ import net.i2p.data.Destination
  */
 @Log
 class PeerConnection extends Connection {
-	
-	private final DataInputStream dis
-	private final DataOutputStream dos
-	
-	private final byte[] readHeader = new byte[3]
-	private final byte[] writeHeader = new byte[3]
-	
-	private final JsonSlurper slurper = new JsonSlurper()
 
-	public PeerConnection(EventBus eventBus, Endpoint endpoint,
-			boolean incoming, HostCache hostCache, TrustService trustService,
+    private final DataInputStream dis
+    private final DataOutputStream dos
+
+    private final byte[] readHeader = new byte[3]
+    private final byte[] writeHeader = new byte[3]
+
+    private final JsonSlurper slurper = new JsonSlurper()
+
+    public PeerConnection(EventBus eventBus, Endpoint endpoint,
+            boolean incoming, HostCache hostCache, TrustService trustService,
             MuWireSettings settings) {
-		super(eventBus, endpoint, incoming, hostCache, trustService, settings)
-		this.dis = new DataInputStream(endpoint.inputStream)
-		this.dos = new DataOutputStream(endpoint.outputStream)
-	}
+        super(eventBus, endpoint, incoming, hostCache, trustService, settings)
+        this.dis = new DataInputStream(endpoint.inputStream)
+        this.dos = new DataOutputStream(endpoint.outputStream)
+    }
 
-	@Override
-	protected void read() {
-		dis.readFully(readHeader)
-		int length = DataUtil.readLength(readHeader)
-		log.fine("$name read length $length")
-		
-		byte[] payload = new byte[length]
-		dis.readFully(payload)
-		
-		if ((readHeader[0] & (byte)0x80) == 0x80) {
-			// TODO process binary
-		} else {
-			def json = slurper.parse(payload)
-			if (json.type == null)
-				throw new Exception("missing json type")
-			switch(json.type) {
-				case "Ping" : handlePing(); break;
-				case "Pong" : handlePong(json); break;
+    @Override
+    protected void read() {
+        dis.readFully(readHeader)
+        int length = DataUtil.readLength(readHeader)
+        log.fine("$name read length $length")
+
+        byte[] payload = new byte[length]
+        dis.readFully(payload)
+
+        if ((readHeader[0] & (byte)0x80) == 0x80) {
+            // TODO process binary
+        } else {
+            def json = slurper.parse(payload)
+            if (json.type == null)
+                throw new Exception("missing json type")
+            switch(json.type) {
+                case "Ping" : handlePing(); break;
+                case "Pong" : handlePong(json); break;
                 case "Search": handleSearch(json); break
-				default :
-					throw new Exception("unknown json type ${json.type}")
-			}
-		}
-	}
+                default :
+                    throw new Exception("unknown json type ${json.type}")
+            }
+        }
+    }
 
-	@Override
-	protected void write(Object message) {
-		byte[] payload
-		if (message instanceof Map) {
-			payload = JsonOutput.toJson(message).bytes
-			DataUtil.packHeader(payload.length, writeHeader)
-			log.fine "$name writing message type ${message.type} length $payload.length"
-			writeHeader[0] &= (byte)0x7F
-		} else {
-			// TODO: write binary
-		}
-		
-		dos.write(writeHeader)
-		dos.write(payload)
-		dos.flush()
-	}
+    @Override
+    protected void write(Object message) {
+        byte[] payload
+        if (message instanceof Map) {
+            payload = JsonOutput.toJson(message).bytes
+            DataUtil.packHeader(payload.length, writeHeader)
+            log.fine "$name writing message type ${message.type} length $payload.length"
+            writeHeader[0] &= (byte)0x7F
+        } else {
+            // TODO: write binary
+        }
+
+        dos.write(writeHeader)
+        dos.write(payload)
+        dos.flush()
+    }
 
 }

core/src/main/groovy/com/muwire/core/connection/UltrapeerConnection.groovy

@@ -17,30 +17,30 @@ import net.i2p.data.Destination
  */
 class UltrapeerConnection extends Connection {
 
-	public UltrapeerConnection(EventBus eventBus, Endpoint endpoint, HostCache hostCache, TrustService trustService) {
-		super(eventBus, endpoint, false, hostCache, trustService)
-	}
+    public UltrapeerConnection(EventBus eventBus, Endpoint endpoint, HostCache hostCache, TrustService trustService) {
+        super(eventBus, endpoint, false, hostCache, trustService)
+    }
 
-	@Override
-	protected void read() {
-		// TODO Auto-generated method stub
-		
-	}
+    @Override
+    protected void read() {
+        // TODO Auto-generated method stub
 
-	@Override
-	protected void write(Object message) {
-		if (message instanceof Map) {
-			writeJsonMessage(message)
-		} else {
-			writeBinaryMessage(message)
-		}
-	}
+    }
 
-	private void writeJsonMessage(def message) {
-		
-	}
-	
-	private void writeBinaryMessage(def message) {
-		
-	}
+    @Override
+    protected void write(Object message) {
+        if (message instanceof Map) {
+            writeJsonMessage(message)
+        } else {
+            writeBinaryMessage(message)
+        }
+    }
+
+    private void writeJsonMessage(def message) {
+
+    }
+
+    private void writeBinaryMessage(def message) {
+
+    }
 }

core/src/main/groovy/com/muwire/core/connection/UltrapeerConnectionManager.groovy

@@ -15,28 +15,28 @@ import net.i2p.data.Destination
 
 @Log
 class UltrapeerConnectionManager extends ConnectionManager {
-	
-	final int maxPeers, maxLeafs
-    final TrustService trustService
-    
-	final Map<Destination, PeerConnection> peerConnections = new ConcurrentHashMap()
-	final Map<Destination, LeafConnection> leafConnections = new ConcurrentHashMap()
-    
-	UltrapeerConnectionManager() {}
 
-	public UltrapeerConnectionManager(EventBus eventBus, Persona me, int maxPeers, int maxLeafs, 
+    final int maxPeers, maxLeafs
+    final TrustService trustService
+
+    final Map<Destination, PeerConnection> peerConnections = new ConcurrentHashMap()
+    final Map<Destination, LeafConnection> leafConnections = new ConcurrentHashMap()
+
+    UltrapeerConnectionManager() {}
+
+    public UltrapeerConnectionManager(EventBus eventBus, Persona me, int maxPeers, int maxLeafs,
         HostCache hostCache, TrustService trustService, MuWireSettings settings) {
-		super(eventBus, me, hostCache, settings)
-		this.maxPeers = maxPeers
-		this.maxLeafs = maxLeafs
+        super(eventBus, me, hostCache, settings)
+        this.maxPeers = maxPeers
+        this.maxLeafs = maxLeafs
         this.trustService = trustService
-	}
-	@Override
-	public void drop(Destination d) {
-		peerConnections.get(d)?.close()
+    }
+    @Override
+    public void drop(Destination d) {
+        peerConnections.get(d)?.close()
         leafConnections.get(d)?.close()
-	}
-    
+    }
+
     void onQueryEvent(QueryEvent e) {
         forwardQueryToLeafs(e)
         if (!e.firstHop)
@@ -50,67 +50,68 @@ class UltrapeerConnectionManager extends ConnectionManager {
         }
     }
 
-	@Override
-	public Collection<Connection> getConnections() {
-		def rv = new ArrayList(peerConnections.size() + leafConnections.size())
-		rv.addAll(peerConnections.values())
-		rv.addAll(leafConnections.values())
-		rv
-	}
-	
-	boolean hasLeafSlots() {
-		leafConnections.size() < maxLeafs
-	}
-	
-	boolean hasPeerSlots() {
-		peerConnections.size() < maxPeers
-	}
-	
-	@Override
-	protected int getDesiredConnections() {
-		return maxPeers / 2;
-	}
-	@Override
-	public boolean isConnected(Destination d) {
-		peerConnections.containsKey(d) || leafConnections.containsKey(d)
-	}
+    @Override
+    public Collection<Connection> getConnections() {
+        def rv = new ArrayList(peerConnections.size() + leafConnections.size())
+        rv.addAll(peerConnections.values())
+        rv.addAll(leafConnections.values())
+        rv
+    }
+
+    boolean hasLeafSlots() {
+        leafConnections.size() < maxLeafs
+    }
+
+    boolean hasPeerSlots() {
+        peerConnections.size() < maxPeers
+    }
+
+    @Override
+    protected int getDesiredConnections() {
+        return maxPeers / 2;
+    }
+    @Override
+    public boolean isConnected(Destination d) {
+        peerConnections.containsKey(d) || leafConnections.containsKey(d)
+    }
+
+    @Override
+    public void onConnectionEvent(ConnectionEvent e) {
+        if (!e.incoming && e.leaf) {
+            log.severe("Inconsistent event $e")
+            return
+        }
+
+        if (e.status != ConnectionAttemptStatus.SUCCESSFUL)
+            return
+
+        Connection c = e.leaf ?
+            new LeafConnection(eventBus, e.endpoint, hostCache, trustService, settings) :
+            new PeerConnection(eventBus, e.endpoint, e.incoming, hostCache, trustService, settings)
+        def map = e.leaf ? leafConnections : peerConnections
+        map.put(e.endpoint.destination, c)
+        c.start()
+    }
+
+    @Override
+    public void onDisconnectionEvent(DisconnectionEvent e) {
+        def removed = peerConnections.remove(e.destination)
+        if (removed == null)
+            removed = leafConnections.remove(e.destination)
+        if (removed == null)
+            log.severe("Removed connection not present in either leaf or peer map ${e.destination.toBase32()}")
+    }
 
-	@Override
-	public void onConnectionEvent(ConnectionEvent e) {
-		if (!e.incoming && e.leaf) {
-			log.severe("Inconsistent event $e")
-			return
-		}
-		
-		if (e.status != ConnectionAttemptStatus.SUCCESSFUL)
-			return
-		
-		Connection c = e.leaf ? 
-			new LeafConnection(eventBus, e.endpoint, hostCache, trustService, settings) : 
-			new PeerConnection(eventBus, e.endpoint, e.incoming, hostCache, trustService, settings)
-		def map = e.leaf ? leafConnections : peerConnections
-		map.put(e.endpoint.destination, c)
-		c.start()
-	}
-	
-	@Override
-	public void onDisconnectionEvent(DisconnectionEvent e) {
-		def removed = peerConnections.remove(e.destination)
-		if (removed == null)
-			removed = leafConnections.remove(e.destination)
-		if (removed == null)
-			log.severe("Removed connection not present in either leaf or peer map ${e.destination.toBase32()}")
-	}
-    
     @Override
     void shutdown() {
+        super.shutdown()
         peerConnections.values().stream().parallel().forEach({v -> v.close()})
         leafConnections.values().stream().parallel().forEach({v -> v.close()})
         peerConnections.clear()
         leafConnections.clear()
     }
-	
-	void forwardQueryToLeafs(QueryEvent e) {
-		
-	}
+
+    void forwardQueryToLeafs(QueryEvent e) {
+
+    }
 }

core/src/main/groovy/com/muwire/core/content/ContentControlEvent.groovy

@@ -0,0 +1,9 @@
+package com.muwire.core.content
+
+import com.muwire.core.Event
+
+class ContentControlEvent extends Event {
+    String term
+    boolean regex
+    boolean add
+}

core/src/main/groovy/com/muwire/core/content/ContentManager.groovy

@@ -0,0 +1,30 @@
+package com.muwire.core.content
+
+import java.util.concurrent.ConcurrentHashMap
+
+import com.muwire.core.search.QueryEvent
+
+import net.i2p.util.ConcurrentHashSet
+
+class ContentManager {
+
+    Set<Matcher> matchers = new ConcurrentHashSet()    
+    
+    void onContentControlEvent(ContentControlEvent e) {
+        Matcher m
+        if (e.regex)
+            m = new RegexMatcher(e.term)
+        else
+            m = new KeywordMatcher(e.term)
+        if (e.add)
+            matchers.add(m)
+        else
+            matchers.remove(m)
+    }
+    
+    void onQueryEvent(QueryEvent e) {
+        if (e.searchEvent.searchTerms == null)
+            return
+        matchers.each { it.process(e) }
+    }
+}

core/src/main/groovy/com/muwire/core/content/KeywordMatcher.groovy

@@ -0,0 +1,36 @@
+package com.muwire.core.content
+
+class KeywordMatcher extends Matcher {
+    private final String keyword
+    KeywordMatcher(String keyword) {
+        this.keyword = keyword
+    }
+    
+    @Override
+    protected boolean match(List<String> searchTerms) {
+        boolean found = false
+        searchTerms.each { 
+            if (keyword == it)
+                found = true
+        }
+        found
+    }
+    
+    @Override
+    public String getTerm() {
+        keyword
+    }
+    
+    @Override
+    public int hashCode() {
+        keyword.hashCode()
+    }
+    
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof KeywordMatcher))
+            return false
+        KeywordMatcher other = (KeywordMatcher) o
+        keyword.equals(other.keyword)
+    }
+}

core/src/main/groovy/com/muwire/core/content/Match.groovy

@@ -0,0 +1,9 @@
+package com.muwire.core.content
+
+import com.muwire.core.Persona
+
+class Match {
+    Persona persona
+    String [] keywords
+    long timestamp
+}

core/src/main/groovy/com/muwire/core/content/Matcher.groovy

@@ -0,0 +1,20 @@
+package com.muwire.core.content
+
+import com.muwire.core.search.QueryEvent
+
+abstract class Matcher {
+    final List<Match> matches = Collections.synchronizedList(new ArrayList<>())
+    final Set<UUID> uuids = new HashSet<>()
+    
+    protected abstract boolean match(List<String> searchTerms);
+    
+    public abstract String getTerm();
+    
+    public void process(QueryEvent qe) {
+        def terms = qe.searchEvent.searchTerms
+        if (match(terms) && uuids.add(qe.searchEvent.uuid)) {
+            long now = System.currentTimeMillis()
+            matches << new Match(persona : qe.originator, keywords : terms, timestamp : now)
+        }
+    }
+}

core/src/main/groovy/com/muwire/core/content/RegexMatcher.groovy

@@ -0,0 +1,35 @@
+package com.muwire.core.content
+
+import java.util.regex.Pattern
+import java.util.stream.Collectors
+
+class RegexMatcher extends Matcher {
+    private final Pattern pattern
+    RegexMatcher(String pattern) {
+        this.pattern = Pattern.compile(pattern)
+    }
+    
+    @Override
+    protected boolean match(List<String> keywords) {
+        String combined = keywords.join(" ")
+        return pattern.matcher(combined).find()
+    }
+    
+    @Override
+    public String getTerm() {
+        pattern.pattern()
+    }
+    
+    @Override
+    public int hashCode() {
+        pattern.pattern().hashCode()
+    }
+    
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof RegexMatcher))
+            return false
+        RegexMatcher other = (RegexMatcher) o
+        pattern.pattern() == other.pattern.pattern()
+    }
+}

core/src/main/groovy/com/muwire/core/download/BadHashException.groovy

@@ -21,5 +21,5 @@ class BadHashException extends Exception {
     public BadHashException(Throwable cause) {
         super(cause);
     }
-    
+
 }

core/src/main/groovy/com/muwire/core/download/DownloadManager.groovy

@@ -3,42 +3,55 @@ package com.muwire.core.download
 import com.muwire.core.connection.I2PConnector
 import com.muwire.core.files.FileDownloadedEvent
 import com.muwire.core.files.FileHasher
+import com.muwire.core.mesh.Mesh
+import com.muwire.core.mesh.MeshManager
+import com.muwire.core.trust.TrustLevel
+import com.muwire.core.trust.TrustService
 import com.muwire.core.util.DataUtil
 
 import groovy.json.JsonBuilder
 import groovy.json.JsonOutput
 import groovy.json.JsonSlurper
+import groovy.util.logging.Log
 import net.i2p.data.Base64
 import net.i2p.data.Destination
 import net.i2p.util.ConcurrentHashSet
 
 import com.muwire.core.EventBus
 import com.muwire.core.InfoHash
+import com.muwire.core.MuWireSettings
 import com.muwire.core.Persona
 import com.muwire.core.UILoadedEvent
 
+import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.Executor
 import java.util.concurrent.Executors
+import java.util.logging.Level
 
+@Log
 public class DownloadManager {
-    
+
     private final EventBus eventBus
+    private final TrustService trustService
+    private final MeshManager meshManager
+    private final MuWireSettings muSettings
     private final I2PConnector connector
     private final Executor executor
-    private final File incompletes, home
+    private final File home
     private final Persona me
-    
-    private final Set<Downloader> downloaders = new ConcurrentHashSet<>()
-    
-    public DownloadManager(EventBus eventBus, I2PConnector connector, File home, Persona me) {
+
+    private final Map<InfoHash, Downloader> downloaders = new ConcurrentHashMap<>()
+
+    public DownloadManager(EventBus eventBus, TrustService trustService, MeshManager meshManager, MuWireSettings muSettings,
+        I2PConnector connector, File home, Persona me) {
         this.eventBus = eventBus
+        this.trustService = trustService
+        this.meshManager = meshManager
+        this.muSettings = muSettings
         this.connector = connector
-        this.incompletes = new File(home,"incompletes")
         this.home = home
         this.me = me
-        
-        incompletes.mkdir()
-        
+
         this.executor = Executors.newCachedThreadPool({ r ->
             Thread rv = new Thread(r)
             rv.setName("download-worker")
@@ -46,37 +59,54 @@ public class DownloadManager {
             rv
         })
     }
-    
-    
+
+
     public void onUIDownloadEvent(UIDownloadEvent e) {
+
+        File incompletes = muSettings.incompleteLocation
+        if (incompletes == null)
+            incompletes = new File(home, "incompletes")
+        incompletes.mkdirs()
         
         def size = e.result[0].size
         def infohash = e.result[0].infohash
         def pieceSize = e.result[0].pieceSize
-        
+
         Set<Destination> destinations = new HashSet<>()
-        e.result.each { 
+        e.result.each {
             destinations.add(it.sender.destination)
         }
-        
+        destinations.addAll(e.sources)
+        destinations.remove(me.destination)
+
+        Pieces pieces = getPieces(infohash, size, pieceSize, e.sequential)
+
         def downloader = new Downloader(eventBus, this, me, e.target, size,
             infohash, pieceSize, connector, destinations,
-            incompletes)
-        downloaders.add(downloader)
+            incompletes, pieces)
+        downloaders.put(infohash, downloader)
         persistDownloaders()
         executor.execute({downloader.download()} as Runnable)
         eventBus.publish(new DownloadStartedEvent(downloader : downloader))
     }
-    
+
     public void onUIDownloadCancelledEvent(UIDownloadCancelledEvent e) {
-        downloaders.remove(e.downloader)
+        downloaders.remove(e.downloader.infoHash)
         persistDownloaders()
     }
-    
+
+    public void onUIDownloadPausedEvent(UIDownloadPausedEvent e) {
+        persistDownloaders()
+    }
+
+    public void onUIDownloadResumedEvent(UIDownloadResumedEvent e) {
+        persistDownloaders()
+    }
+
     void resume(Downloader downloader) {
         executor.execute({downloader.download() as Runnable})
     }
-    
+
     void onUILoadedEvent(UILoadedEvent e) {
         File downloadsFile = new File(home, "downloads.json")
         if (!downloadsFile.exists())
@@ -86,7 +116,7 @@ public class DownloadManager {
             def json = slurper.parseText(it)
             File file = new File(DataUtil.readi18nString(Base64.decode(json.file)))
             def destinations = new HashSet<>()
-            json.destinations.each { destination -> 
+            json.destinations.each { destination ->
                 destinations.add new Destination(destination)
             }
             InfoHash infoHash
@@ -97,23 +127,75 @@ public class DownloadManager {
                 byte [] root = Base64.decode(json.hashRoot)
                 infoHash = new InfoHash(root)
             }
+            
+            boolean sequential = false
+            if (json.sequential != null)
+                sequential = json.sequential
+                
+            File incompletes
+            if (json.incompletes != null) 
+                incompletes = new File(DataUtil.readi18nString(Base64.decode(json.incompletes)))
+            else
+                incompletes = new File(home, "incompletes")
+
+            if (json.pieceSizePow2 == null || json.pieceSizePow2 == 0) {
+                log.warning("Skipping $file because pieceSizePow2=$json.pieceSizePow2")
+                return // skip this download as it's corrupt anyway
+            }
+                
+            Pieces pieces = getPieces(infoHash, (long)json.length, json.pieceSizePow2, sequential)
+
             def downloader = new Downloader(eventBus, this, me, file, (long)json.length,
-                infoHash, json.pieceSizePow2, connector, destinations, incompletes)
-            downloaders.add(downloader)
-            downloader.download()
-            eventBus.publish(new DownloadStartedEvent(downloader : downloader))
+                infoHash, json.pieceSizePow2, connector, destinations, incompletes, pieces)
+            if (json.paused != null)
+                downloader.paused = json.paused
+                
+            try {
+                downloader.readPieces()
+                if (!downloader.paused)
+                    downloader.download()
+                downloaders.put(infoHash, downloader)
+                eventBus.publish(new DownloadStartedEvent(downloader : downloader))
+            } catch (IllegalArgumentException bad) {
+                log.log(Level.WARNING,"cannot start downloader, skipping", bad)
+                return
+            }
         }
     }
-    
+
+    private Pieces getPieces(InfoHash infoHash, long length, int pieceSizePow2, boolean sequential) {
+        long pieceSize = 0x1L << pieceSizePow2
+        int nPieces = (int)(length / pieceSize)
+        if (length % pieceSize != 0)
+            nPieces++
+        Mesh mesh = meshManager.getOrCreate(infoHash, nPieces, sequential)
+        mesh.pieces
+    }
+
+    void onSourceDiscoveredEvent(SourceDiscoveredEvent e) {
+        Downloader downloader = downloaders.get(e.infoHash)
+        if (downloader == null)
+            return
+        boolean ok = false
+        switch(trustService.getLevel(e.source.destination)) {
+            case TrustLevel.TRUSTED: ok = true; break
+            case TrustLevel.NEUTRAL: ok = muSettings.allowUntrusted; break
+            case TrustLevel.DISTRUSTED: ok = false; break
+        }
+
+        if (ok)
+            downloader.addSource(e.source.destination)
+    }
+
     void onFileDownloadedEvent(FileDownloadedEvent e) {
-        downloaders.remove(e.downloader)
+        downloaders.remove(e.downloader.infoHash)
         persistDownloaders()
     }
-    
+
     private void persistDownloaders() {
         File downloadsFile = new File(home,"downloads.json")
-        downloadsFile.withPrintWriter { writer -> 
-            downloaders.each { downloader ->
+        downloadsFile.withPrintWriter { writer ->
+            downloaders.values().each { downloader ->
                 if (!downloader.cancelled) {
                     def json = [:]
                     json.file = Base64.encode(DataUtil.encodei18nString(downloader.file.getAbsolutePath()))
@@ -124,20 +206,27 @@ public class DownloadManager {
                         destinations << it.toBase64()
                     }
                     json.destinations = destinations
-                    
+
                     InfoHash infoHash = downloader.getInfoHash()
                     if (infoHash.hashList != null)
                         json.hashList = Base64.encode(infoHash.hashList)
                     else
                         json.hashRoot = Base64.encode(infoHash.getRoot())
+
+                    json.paused = downloader.paused
+                    
+                    json.sequential = downloader.pieces.ratio == 0f
+                    
+                    json.incompletes = Base64.encode(DataUtil.encodei18nString(downloader.incompletes.getAbsolutePath()))
+                    
                     writer.println(JsonOutput.toJson(json))
                 }
             }
         }
     }
-    
+
     public void shutdown() {
-        downloaders.each { it.stop() }
+        downloaders.values().each { it.stop() }
         Downloader.executorService.shutdownNow()
     }
 }

core/src/main/groovy/com/muwire/core/download/DownloadSession.groovy

@@ -3,13 +3,18 @@ package com.muwire.core.download;
 import net.i2p.data.Base64
 
 import com.muwire.core.Constants
+import com.muwire.core.EventBus
 import com.muwire.core.InfoHash
+import com.muwire.core.Persona
 import com.muwire.core.connection.Endpoint
+import com.muwire.core.util.DataUtil
+
 import static com.muwire.core.util.DataUtil.readTillRN
 
 import groovy.util.logging.Log
 
 import java.nio.ByteBuffer
+import java.nio.MappedByteBuffer
 import java.nio.channels.FileChannel
 import java.nio.charset.StandardCharsets
 import java.nio.file.Files
@@ -20,9 +25,8 @@ import java.util.logging.Level
 
 @Log
 class DownloadSession {
-    
-    private static int SAMPLES = 10
-    
+
+    private final EventBus eventBus
     private final String meB64
     private final Pieces pieces
     private final InfoHash infoHash
@@ -30,15 +34,17 @@ class DownloadSession {
     private final File file
     private final int pieceSize
     private final long fileLength
+    private final Set<Integer> available
     private final MessageDigest digest
-    
-    private final LinkedList<Long> timestamps = new LinkedList<>()
-    private final LinkedList<Integer> reads = new LinkedList<>()
-    
-    private ByteBuffer mapped
-    
-    DownloadSession(String meB64, Pieces pieces, InfoHash infoHash, Endpoint endpoint, File file, 
-        int pieceSize, long fileLength) {
+
+    private long lastSpeedRead = System.currentTimeMillis()
+    private long dataSinceLastRead
+
+    private MappedByteBuffer mapped
+
+    DownloadSession(EventBus eventBus, String meB64, Pieces pieces, InfoHash infoHash, Endpoint endpoint, File file,
+        int pieceSize, long fileLength, Set<Integer> available) {
+        this.eventBus = eventBus
         this.meB64 = meB64
         this.pieces = pieces
         this.endpoint = endpoint
@@ -46,6 +52,7 @@ class DownloadSession {
         this.file = file
         this.pieceSize = pieceSize
         this.fileLength = fileLength
+        this.available = available
         try {
             digest = MessageDigest.getInstance("SHA-256")
         } catch (NoSuchAlgorithmException impossible) {
@@ -53,7 +60,7 @@ class DownloadSession {
             System.exit(1)
         }
     }
-    
+
     /**
      * @return if the request will proceed.  The only time it may not
      * is if all the pieces have been claimed by other sessions.
@@ -62,74 +69,117 @@ class DownloadSession {
     public boolean request() throws IOException {
         OutputStream os = endpoint.getOutputStream()
         InputStream is = endpoint.getInputStream()
-        
-        int piece = pieces.claim()
-        if (piece == -1)
+
+        int[] pieceAndPosition
+        if (available.isEmpty())
+            pieceAndPosition = pieces.claim()
+        else
+            pieceAndPosition = pieces.claim(new HashSet<>(available))
+        if (pieceAndPosition == null)
             return false
+        int piece = pieceAndPosition[0]
+        int position = pieceAndPosition[1]
+        boolean steal = pieceAndPosition[2] == 1
         boolean unclaim = true
-            
-        log.info("will download piece $piece")
-        
-        long start = piece * pieceSize
-        long end = Math.min(fileLength, start + pieceSize) - 1
-        long length = end - start + 1
-        
+
+        log.info("will download piece $piece from position $position steal $steal")
+
+        long pieceStart = piece * ((long)pieceSize)
+        long end = Math.min(fileLength, pieceStart + pieceSize) - 1
+        long start = pieceStart + position
         String root = Base64.encode(infoHash.getRoot())
-                
+
         try {
             os.write("GET $root\r\n".getBytes(StandardCharsets.US_ASCII))
             os.write("Range: $start-$end\r\n".getBytes(StandardCharsets.US_ASCII))
-            os.write("X-Persona: $meB64\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+            os.write("X-Persona: $meB64\r\n".getBytes(StandardCharsets.US_ASCII))
+            String xHave = DataUtil.encodeXHave(pieces.getDownloaded(), pieces.nPieces)
+            os.write("X-Have: $xHave\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
             os.flush()
-            String code = readTillRN(is)
-            if (code.startsWith("404 ")) {
+            String codeString = readTillRN(is)
+            int space = codeString.indexOf(' ')
+            if (space > 0)
+                codeString = codeString.substring(0, space)
+
+            int code = Integer.parseInt(codeString.trim())
+
+            if (code == 404) {
                 log.warning("file not found")
                 endpoint.close()
-                return
+                return false
             }
-                
-            if (code.startsWith("416 ")) {
-                log.warning("range $start-$end cannot be satisfied")
-                return // leave endpoint open
-            }
-            
-            if (!code.startsWith("200 ")) {
+
+            if (!(code == 200 || code == 416)) {
                 log.warning("unknown code $code")
                 endpoint.close()
                 return false
             }
 
             // parse all headers
-            Set<String> headers = new HashSet<>()
+            Map<String,String> headers = new HashMap<>()
             String header
-            while((header = readTillRN(is)) != "" && headers.size() < Constants.MAX_HEADERS) 
-                headers.add(header)
-
-            long receivedStart = -1
-            long receivedEnd = -1
-            for (String receivedHeader : headers) {
-                def group = (receivedHeader =~ /^Content-Range: (\d+)-(\d+)$/)
-                if (group.size() != 1) {
-                    log.info("ignoring header $receivedHeader")
-                    continue
-                } 
-
-                receivedStart = Long.parseLong(group[0][1])
-                receivedEnd = Long.parseLong(group[0][2])
+            while((header = readTillRN(is)) != "" && headers.size() < Constants.MAX_HEADERS) {
+                int colon = header.indexOf(':')
+                if (colon == -1 || colon == header.length() - 1)
+                    throw new IOException("invalid header $header")
+                String key = header.substring(0, colon)
+                String value = header.substring(colon + 1)
+                headers[key] = value.trim()
             }
-            
+
+            // prase X-Alt if present
+            if (headers.containsKey("X-Alt")) {
+                headers["X-Alt"].split(",").each {
+                    if (it.length() > 0) {
+                        byte [] raw = Base64.decode(it)
+                        Persona source = new Persona(new ByteArrayInputStream(raw))
+                        eventBus.publish(new SourceDiscoveredEvent(infoHash : infoHash, source : source))
+                    }
+                }
+            }
+
+            // parse X-Have if present
+            if (headers.containsKey("X-Have")) {
+                DataUtil.decodeXHave(headers["X-Have"]).each {
+                    if (it >= pieces.nPieces)
+                        throw new IOException("Invalid X-Have header, available piece $it/$pieces.nPieces")
+                    available.add(it)
+                }
+                if (!available.contains(piece))
+                    return true // try again next time
+            } else {
+                if (code != 200)
+                    throw new IOException("Code $code but no X-Have")
+                available.clear()
+            }
+
+            if (code != 200)
+                return true
+
+            String range = headers["Content-Range"]
+            if (range == null)
+                throw new IOException("Code 200 but no Content-Range")
+
+            def group = (range =~ /^(\d+)-(\d+)$/)
+            if (group.size() != 1)
+                throw new IOException("invalid Content-Range header $range")
+
+            long receivedStart = Long.parseLong(group[0][1])
+            long receivedEnd = Long.parseLong(group[0][2])
+
             if (receivedStart != start || receivedEnd != end) {
                 log.warning("We don't support mismatching ranges yet")
                 endpoint.close()
                 return false
             }
-            
+
             // start the download
             FileChannel channel
             try {
                 channel = Files.newByteChannel(file.toPath(), EnumSet.of(StandardOpenOption.READ, StandardOpenOption.WRITE,
-                        StandardOpenOption.SPARSE, StandardOpenOption.CREATE)) // TODO: double-check, maybe CREATE_NEW
-                mapped = channel.map(FileChannel.MapMode.READ_WRITE, start, end - start + 1)
+                        StandardOpenOption.SPARSE, StandardOpenOption.CREATE)) 
+                mapped = channel.map(FileChannel.MapMode.READ_WRITE, pieceStart, end - pieceStart + 1)
+                mapped.position(position)
 
                 byte[] tmp = new byte[0x1 << 13]
                 while(mapped.hasRemaining()) {
@@ -140,13 +190,8 @@ class DownloadSession {
                         throw new IOException()
                     synchronized(this) {
                         mapped.put(tmp, 0, read)
-
-                        if (timestamps.size() == SAMPLES) {
-                            timestamps.removeFirst()
-                            reads.removeFirst()
-                        }
-                        timestamps.addLast(System.currentTimeMillis())
-                        reads.addLast(read)
+                        dataSinceLastRead += read
+                        pieces.markPartial(piece, mapped.position())
                     }
                 }
 
@@ -155,45 +200,35 @@ class DownloadSession {
                 byte [] hash = digest.digest()
                 byte [] expected = new byte[32]
                 System.arraycopy(infoHash.getHashList(), piece * 32, expected, 0, 32)
-                if (hash != expected)
-                    throw new BadHashException()
+                if (hash != expected) {
+                    pieces.markPartial(piece, 0)
+                    throw new BadHashException("bad hash on piece $piece")
+                }
             } finally {
                 try { channel?.close() } catch (IOException ignore) {}
+                DataUtil.tryUnmap(mapped)
             }
             pieces.markDownloaded(piece)
             unclaim = false
         } finally {
-            if (unclaim)
+            if (unclaim && !steal) 
                 pieces.unclaim(piece)
         }
         return true
     }
-    
+
     synchronized int positionInPiece() {
         if (mapped == null)
             return 0
         mapped.position()
     }
-    
+
     synchronized int speed() {
-        if (timestamps.size() < SAMPLES)
-            return 0
-        int totalRead = 0
-        int idx = 0
         final long now = System.currentTimeMillis()
-        
-        while(idx < SAMPLES && timestamps.get(idx) < now - 1000)
-            idx++
-        if (idx == SAMPLES)
-            return 0
-        if (idx == SAMPLES - 1)
-            return reads[idx]
-            
-        long interval = timestamps.last - timestamps[idx]
-        if (interval == 0) 
-            interval = 1
-        for (int i = idx; i < SAMPLES; i++)
-            totalRead += reads[idx]
-        (int)(totalRead * 1000.0 / interval)
+        long interval = Math.max(1000, now - lastSpeedRead)
+        lastSpeedRead = now;
+        int rv = (int) (dataSinceLastRead * 1000.0 / interval)
+        dataSinceLastRead = 0
+        rv
     }
 }

core/src/main/groovy/com/muwire/core/download/Downloader.groovy

@@ -7,6 +7,7 @@ import com.muwire.core.connection.Endpoint
 import java.nio.file.AtomicMoveNotSupportedException
 import java.nio.file.Files
 import java.nio.file.StandardCopyOption
+import java.time.Instant
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.ExecutorService
 import java.util.concurrent.Executors
@@ -18,15 +19,18 @@ import com.muwire.core.DownloadedFile
 import com.muwire.core.EventBus
 import com.muwire.core.connection.I2PConnector
 import com.muwire.core.files.FileDownloadedEvent
+import com.muwire.core.util.DataUtil
 
 import groovy.util.logging.Log
 import net.i2p.data.Destination
+import net.i2p.util.ConcurrentHashSet
 
 @Log
 public class Downloader {
-    public enum DownloadState { CONNECTING, HASHLIST, DOWNLOADING, FAILED, CANCELLED, FINISHED }
-    private enum WorkerState { CONNECTING, HASHLIST, DOWNLOADING, FINISHED}
     
+    public enum DownloadState { CONNECTING, HASHLIST, DOWNLOADING, FAILED, CANCELLED, PAUSED, FINISHED }
+    private enum WorkerState { CONNECTING, HASHLIST, DOWNLOADING, FINISHED}
+
     private static final ExecutorService executorService = Executors.newCachedThreadPool({r ->
         Thread rv = new Thread(r)
         rv.setName("download worker")
@@ -35,8 +39,8 @@ public class Downloader {
     })
 
     private final EventBus eventBus
-    private final DownloadManager downloadManager 
-    private final Persona me   
+    private final DownloadManager downloadManager
+    private final Persona me
     private final File file
     private final Pieces pieces
     private final long length
@@ -45,20 +49,27 @@ public class Downloader {
     private final I2PConnector connector
     private final Set<Destination> destinations
     private final int nPieces
+    private final File incompletes
     private final File piecesFile
     private final File incompleteFile
     final int pieceSizePow2
     private final Map<Destination, DownloadWorker> activeWorkers = new ConcurrentHashMap<>()
-    
-    
-    private volatile boolean cancelled
+    private final Set<Destination> successfulDestinations = new ConcurrentHashSet<>()
+
+
+    private volatile boolean cancelled, paused
     private final AtomicBoolean eventFired = new AtomicBoolean()
     private boolean piecesFileClosed
 
-    public Downloader(EventBus eventBus, DownloadManager downloadManager, 
-        Persona me, File file, long length, InfoHash infoHash, 
+    private ArrayList speedArr = new ArrayList<Integer>()
+    private int speedPos = 0
+    private int speedAvg = 0
+    private long timestamp = Instant.now().toEpochMilli()
+
+    public Downloader(EventBus eventBus, DownloadManager downloadManager,
+        Persona me, File file, long length, InfoHash infoHash,
         int pieceSizePow2, I2PConnector connector, Set<Destination> destinations,
-        File incompletes) {
+        File incompletes, Pieces pieces) {
         this.eventBus = eventBus
         this.me = me
         this.downloadManager = downloadManager
@@ -67,29 +78,23 @@ public class Downloader {
         this.length = length
         this.connector = connector
         this.destinations = destinations
+        this.incompletes = incompletes
         this.piecesFile = new File(incompletes, file.getName()+".pieces")
         this.incompleteFile = new File(incompletes, file.getName()+".part")
         this.pieceSizePow2 = pieceSizePow2
         this.pieceSize = 1 << pieceSizePow2
-        
-        int nPieces
-        if (length % pieceSize == 0)
-            nPieces = length / pieceSize
-        else
-            nPieces = length / pieceSize + 1
-        this.nPieces = nPieces
-        
-        pieces = new Pieces(nPieces, Constants.DOWNLOAD_SEQUENTIAL_RATIO)
+        this.pieces = pieces
+        this.nPieces = pieces.nPieces
     }
-    
+
     public synchronized InfoHash getInfoHash() {
         infoHash
     }
-    
+
     private synchronized void setInfoHash(InfoHash infoHash) {
         this.infoHash = infoHash
     }
-    
+
     void download() {
         readPieces()
         destinations.each {
@@ -100,49 +105,83 @@ public class Downloader {
             }
         }
     }
-    
+
     void readPieces() {
         if (!piecesFile.exists())
             return
-        piecesFile.eachLine { 
-            int piece = Integer.parseInt(it)
-            pieces.markDownloaded(piece)
+        piecesFile.eachLine {
+            String [] split = it.split(",")
+            int piece = Integer.parseInt(split[0])
+            if (split.length == 1)
+                pieces.markDownloaded(piece)
+            else {
+                int position = Integer.parseInt(split[1])
+                pieces.markPartial(piece, position)
+            }
         }
     }
-    
+
     void writePieces() {
         synchronized(piecesFile) {
             if (piecesFileClosed)
                 return
             piecesFile.withPrintWriter { writer ->
-                pieces.getDownloaded().each { piece ->
-                    writer.println(piece)
-                }
+                pieces.write(writer)
             }
         }
     }
-    
+
     public long donePieces() {
         pieces.donePieces()
     }
-    
-    
+
+
     public int speed() {
-        int total = 0
+        int currSpeed = 0
         if (getCurrentState() == DownloadState.DOWNLOADING) {
             activeWorkers.values().each {
                 if (it.currentState == WorkerState.DOWNLOADING)
-                    total += it.speed()
+                    currSpeed += it.speed()
             }
         }
-        total
+        
+        if (speedArr.size() != downloadManager.muSettings.speedSmoothSeconds) {
+            speedArr.clear()
+            downloadManager.muSettings.speedSmoothSeconds.times { speedArr.add(0) }
+            speedPos = 0
+        }
+
+        // normalize to speedArr.size
+        currSpeed /= speedArr.size()
+
+        // compute new speedAvg and update speedArr
+        if ( speedArr[speedPos] > speedAvg ) {
+            speedAvg = 0
+        } else {
+            speedAvg -= speedArr[speedPos]
+        }
+        speedAvg += currSpeed
+        speedArr[speedPos] = currSpeed
+        // this might be necessary due to rounding errors
+        if (speedAvg < 0)
+            speedAvg = 0
+
+        // rolling index over the speedArr
+        speedPos++
+        if (speedPos >= speedArr.size())
+            speedPos=0
+
+        speedAvg
     }
-    
+
     public DownloadState getCurrentState() {
         if (cancelled)
             return DownloadState.CANCELLED
+        if (paused)
+            return DownloadState.PAUSED
+
         boolean allFinished = true
-        activeWorkers.values().each { 
+        activeWorkers.values().each {
             allFinished &= it.currentState == WorkerState.FINISHED
         }
         if (allFinished) {
@@ -150,22 +189,22 @@ public class Downloader {
                 return DownloadState.FINISHED
             return DownloadState.FAILED
         }
-        
+
         // if at least one is downloading...
         boolean oneDownloading = false
-        activeWorkers.values().each { 
+        activeWorkers.values().each {
             if (it.currentState == WorkerState.DOWNLOADING) {
                 oneDownloading = true
-                return 
+                return
             }
         }
-        
+
         if (oneDownloading)
             return DownloadState.DOWNLOADING
-        
+
         // at least one is requesting hashlist
         boolean oneHashlist = false
-        activeWorkers.values().each { 
+        activeWorkers.values().each {
             if (it.currentState == WorkerState.HASHLIST) {
                 oneHashlist = true
                 return
@@ -173,10 +212,10 @@ public class Downloader {
         }
         if (oneHashlist)
             return DownloadState.HASHLIST
-            
+
         return DownloadState.CONNECTING
     }
-    
+
     public void cancel() {
         cancelled = true
         stop()
@@ -185,24 +224,32 @@ public class Downloader {
             piecesFile.delete()
         }
         incompleteFile.delete()
+        pieces.clearAll()
     }
-    
+
+    public void pause() {
+        paused = true
+        stop()
+    }
+
     void stop() {
-        activeWorkers.values().each { 
+        activeWorkers.values().each {
             it.cancel()
         }
     }
-    
+
     public int activeWorkers() {
         int active = 0
-        activeWorkers.values().each { 
+        activeWorkers.values().each {
             if (it.currentState != WorkerState.FINISHED)
                 active++
         }
         active
     }
-    
+
     public void resume() {
+        paused = false
+        readPieces()
         destinations.each { destination ->
             def worker = activeWorkers.get(destination)
             if (worker != null) {
@@ -218,18 +265,27 @@ public class Downloader {
             }
         }
     }
-    
+
+    void addSource(Destination d) {
+        if (activeWorkers.containsKey(d))
+            return
+        DownloadWorker newWorker = new DownloadWorker(d)
+        activeWorkers.put(d, newWorker)
+        executorService.submit(newWorker)
+    }
+
     class DownloadWorker implements Runnable {
         private final Destination destination
         private volatile WorkerState currentState
         private volatile Thread downloadThread
         private Endpoint endpoint
         private volatile DownloadSession currentSession
-                
+        private final Set<Integer> available = new HashSet<>()
+
         DownloadWorker(Destination destination) {
             this.destination = destination
         }
-        
+
         public void run() {
             downloadThread = Thread.currentThread()
             currentState = WorkerState.CONNECTING
@@ -245,21 +301,28 @@ public class Downloader {
                 currentState = WorkerState.DOWNLOADING
                 boolean requestPerformed
                 while(!pieces.isComplete()) {
-                    currentSession = new DownloadSession(me.toBase64(), pieces, getInfoHash(), endpoint, incompleteFile, pieceSize, length)
+                    currentSession = new DownloadSession(eventBus, me.toBase64(), pieces, getInfoHash(),
+                        endpoint, incompleteFile, pieceSize, length, available)
                     requestPerformed = currentSession.request()
                     if (!requestPerformed)
                         break
+                    successfulDestinations.add(endpoint.destination)
                     writePieces()
                 }
             } catch (Exception bad) {
-                log.log(Level.WARNING,"Exception while downloading",bad)
+                log.log(Level.WARNING,"Exception while downloading",DataUtil.findRoot(bad))
             } finally {
+                writePieces()
                 currentState = WorkerState.FINISHED
                 if (pieces.isComplete() && eventFired.compareAndSet(false, true)) {
                     synchronized(piecesFile) {
                         piecesFileClosed = true
                         piecesFile.delete()
                     }
+                    activeWorkers.values().each { 
+                        if (it.destination != destination)
+                            it.cancel()
+                    }
                     try {
                         Files.move(incompleteFile.toPath(), file.toPath(), StandardCopyOption.ATOMIC_MOVE)
                     } catch (AtomicMoveNotSupportedException e) {
@@ -268,20 +331,20 @@ public class Downloader {
                     }
                     eventBus.publish(
                         new FileDownloadedEvent(
-                            downloadedFile : new DownloadedFile(file, getInfoHash(), pieceSizePow2, Collections.emptySet()),
+                            downloadedFile : new DownloadedFile(file.getCanonicalFile(), getInfoHash(), pieceSizePow2, successfulDestinations),
                         downloader : Downloader.this))
-                            
-                } 
+
+                }
                 endpoint?.close()
             }
         }
-        
+
         int speed() {
             if (currentSession == null)
                 return 0
             currentSession.speed()
         }
-        
+
         void cancel() {
             downloadThread?.interrupt()
         }

core/src/main/groovy/com/muwire/core/download/HashListSession.groovy

@@ -20,32 +20,32 @@ class HashListSession {
     private final String meB64
     private final InfoHash infoHash
     private final Endpoint endpoint
-    
+
     HashListSession(String meB64, InfoHash infoHash, Endpoint endpoint) {
         this.meB64 = meB64
         this.infoHash = infoHash
         this.endpoint = endpoint
     }
-    
+
     InfoHash request() throws IOException {
         InputStream is = endpoint.getInputStream()
         OutputStream os = endpoint.getOutputStream()
-        
+
         String root = Base64.encode(infoHash.getRoot())
         os.write("HASHLIST $root\r\n".getBytes(StandardCharsets.US_ASCII))
         os.write("X-Persona: $meB64\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
         os.flush()
-        
+
         String code = readTillRN(is)
         if (!code.startsWith("200"))
             throw new IOException("unknown code $code")
-        
+
         // parse all headers
         Set<String> headers = new HashSet<>()
         String header
         while((header = readTillRN(is)) != "" && headers.size() < Constants.MAX_HEADERS)
             headers.add(header)
-            
+
         long receivedStart = -1
         long receivedEnd = -1
         for (String receivedHeader : headers) {
@@ -58,10 +58,10 @@ class HashListSession {
             receivedStart = Long.parseLong(group[0][1])
             receivedEnd = Long.parseLong(group[0][2])
         }
-        
+
         if (receivedStart != 0)
             throw new IOException("hashlist started at $receivedStart")
-        
+
         byte[] hashList = new byte[receivedEnd]
         ByteBuffer hashListBuf = ByteBuffer.wrap(hashList)
         byte[] tmp = new byte[0x1 << 13]
@@ -73,7 +73,7 @@ class HashListSession {
                 throw new IOException()
             hashListBuf.put(tmp, 0, read)
         }
-        
+
         InfoHash received = InfoHash.fromHashList(hashList)
         if (received.getRoot() != infoHash.getRoot())
             throw new IOException("fetched list doesn't match root")

core/src/main/groovy/com/muwire/core/download/Pieces.groovy

@@ -5,11 +5,12 @@ class Pieces {
     private final int nPieces
     private final float ratio
     private final Random random = new Random()
-    
+    private final Map<Integer,Integer> partials = new HashMap<>()
+
     Pieces(int nPieces) {
         this(nPieces, 1.0f)
     }
-    
+
     Pieces(int nPieces, float ratio) {
         this.nPieces = nPieces
         this.ratio = ratio
@@ -17,27 +18,54 @@ class Pieces {
         claimed = new BitSet(nPieces)
     }
     
-    synchronized int claim() {
+    synchronized int[] claim() {
         int claimedCardinality = claimed.cardinality()
-        if (claimedCardinality == nPieces)
-            return -1
-        
+        if (claimedCardinality == nPieces) {
+            // steal
+            int downloadedCardinality = done.cardinality()
+            if (downloadedCardinality == nPieces)
+                return null
+            int rv = done.nextClearBit(0)
+            return [rv, partials.getOrDefault(rv, 0), 1]
+        }
+
         // if fuller than ratio just do sequential
-        if ( (1.0f * claimedCardinality) / nPieces > ratio) {
+        if ( (1.0f * claimedCardinality) / nPieces >= ratio) {
             int rv = claimed.nextClearBit(0)
             claimed.set(rv)
-            return rv
+            return [rv, partials.getOrDefault(rv, 0), 0]
         }
-        
+
         while(true) {
             int start = random.nextInt(nPieces)
             if (claimed.get(start))
                 continue
             claimed.set(start)
-            return start
+            return [start, partials.getOrDefault(start,0), 0]
         }
     }
-    
+
+    synchronized int[] claim(Set<Integer> available) {
+        for (int i = done.nextSetBit(0); i >= 0; i = done.nextSetBit(i+1))
+            available.remove(i)
+        if (available.isEmpty())
+            return null
+        Set<Integer> availableCopy = new HashSet<>(available)
+        for (int i = claimed.nextSetBit(0); i >= 0; i = claimed.nextSetBit(i+1))
+            availableCopy.remove(i)
+        if (availableCopy.isEmpty()) {
+            // steal
+            int rv = available.first()
+            return [rv, partials.getOrDefault(rv, 0), 1]
+        }
+        List<Integer> toList = availableCopy.toList()
+        if (ratio > 0f)
+            Collections.shuffle(toList)
+        int rv = toList[0]
+        claimed.set(rv)
+        [rv, partials.getOrDefault(rv, 0), 0]
+    }
+
     synchronized def getDownloaded() {
         def rv = []
         for (int i = done.nextSetBit(0); i >= 0; i = done.nextSetBit(i+1)) {
@@ -45,21 +73,47 @@ class Pieces {
         }
         rv
     }
-    
+
     synchronized void markDownloaded(int piece) {
+        if (piece >= nPieces)
+            throw new IllegalArgumentException("invalid piece marked as downloaded? $piece/$nPieces")
         done.set(piece)
         claimed.set(piece)
+        partials.remove(piece)
     }
     
+    synchronized void markPartial(int piece, int position) {
+        partials.put(piece, position)
+    }
+
     synchronized void unclaim(int piece) {
         claimed.clear(piece)
     }
-    
+
     synchronized boolean isComplete() {
         done.cardinality() == nPieces
     }
-    
+
     synchronized int donePieces() {
         done.cardinality()
     }
+
+    synchronized boolean isDownloaded(int piece) {
+        done.get(piece)
+    }
+
+    synchronized void clearAll() {
+        done.clear()
+        claimed.clear()
+        partials.clear()
+    }
+    
+    synchronized void write(PrintWriter writer) {
+        for (int i = done.nextSetBit(0); i >= 0; i = done.nextSetBit(i+1)) {
+            writer.println(i)
+        }
+        partials.each { piece, position ->
+            writer.println("$piece,$position")
+        }
+    }
 }

core/src/main/groovy/com/muwire/core/download/SourceDiscoveredEvent.groovy

@@ -0,0 +1,10 @@
+package com.muwire.core.download
+
+import com.muwire.core.Event
+import com.muwire.core.InfoHash
+import com.muwire.core.Persona
+
+class SourceDiscoveredEvent extends Event {
+    InfoHash infoHash
+    Persona source
+}

core/src/main/groovy/com/muwire/core/download/UIDownloadEvent.groovy

@@ -3,8 +3,12 @@ package com.muwire.core.download
 import com.muwire.core.Event
 import com.muwire.core.search.UIResultEvent
 
+import net.i2p.data.Destination
+
 class UIDownloadEvent extends Event {
-    
+
     UIResultEvent[] result
+    Set<Destination> sources
     File target
+    boolean sequential
 }

core/src/main/groovy/com/muwire/core/download/UIDownloadPausedEvent.groovy

@@ -0,0 +1,6 @@
+package com.muwire.core.download
+
+import com.muwire.core.Event
+
+class UIDownloadPausedEvent extends Event {
+}

core/src/main/groovy/com/muwire/core/download/UIDownloadResumedEvent.groovy

@@ -0,0 +1,6 @@
+package com.muwire.core.download
+
+import com.muwire.core.Event
+
+class UIDownloadResumedEvent extends Event {
+}

core/src/main/groovy/com/muwire/core/files/DirectoryUnsharedEvent.groovy

@@ -0,0 +1,11 @@
+package com.muwire.core.files
+
+import com.muwire.core.Event
+
+class DirectoryUnsharedEvent extends Event {
+    File directory
+    
+    public String toString() {
+        super.toString() + " unshared directory "+ directory.toString()
+    }
+}

core/src/main/groovy/com/muwire/core/files/DirectoryWatchedEvent.groovy

@@ -0,0 +1,7 @@
+package com.muwire.core.files
+
+import com.muwire.core.Event
+
+class DirectoryWatchedEvent extends Event {
+    File directory
+}

core/src/main/groovy/com/muwire/core/files/DirectoryWatcher.groovy

@@ -1,4 +1,165 @@
 package com.muwire.core.files
 
+import java.nio.file.FileSystem
+import java.nio.file.FileSystems
+import java.nio.file.Path
+import java.nio.file.Paths
+import static java.nio.file.StandardWatchEventKinds.*
+
+import java.nio.file.ClosedWatchServiceException
+import java.nio.file.WatchEvent
+import java.nio.file.WatchKey
+import java.nio.file.WatchService
+import java.util.concurrent.ConcurrentHashMap
+
+import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
+import com.muwire.core.SharedFile
+
+import groovy.util.logging.Log
+import net.i2p.util.SystemVersion
+
+@Log
 class DirectoryWatcher {
+
+    private static final long WAIT_TIME = 1000
+
+    private static final WatchEvent.Kind[] kinds
+    static {
+        if (SystemVersion.isMac())
+            kinds = [ENTRY_MODIFY, ENTRY_DELETE]
+        else
+            kinds = [ENTRY_CREATE, ENTRY_MODIFY, ENTRY_DELETE]
+    }
+
+    private final File home
+    private final MuWireSettings muOptions
+    private final EventBus eventBus
+    private final FileManager fileManager
+    private final Thread watcherThread, publisherThread
+    private final Map<File, Long> waitingFiles = new ConcurrentHashMap<>()
+    private final Map<File, WatchKey> watchedDirectories = new ConcurrentHashMap<>()
+    private WatchService watchService
+    private volatile boolean shutdown
+
+    DirectoryWatcher(EventBus eventBus, FileManager fileManager, File home, MuWireSettings muOptions) {
+        this.home = home
+        this.muOptions = muOptions
+        this.eventBus = eventBus
+        this.fileManager = fileManager
+        this.watcherThread = new Thread({watch() } as Runnable, "directory-watcher")
+        watcherThread.setDaemon(true)
+        this.publisherThread = new Thread({publish()} as Runnable, "watched-files-publisher")
+        publisherThread.setDaemon(true)
+    }
+
+    void onAllFilesLoadedEvent(AllFilesLoadedEvent e) {
+        watchService = FileSystems.getDefault().newWatchService()
+        watcherThread.start()
+        publisherThread.start()
+    }
+
+    void stop() {
+        shutdown = true
+        watcherThread?.interrupt()
+        publisherThread?.interrupt()
+        watchService?.close()
+    }
+
+    void onDirectoryWatchedEvent(DirectoryWatchedEvent e) {
+        File canonical = e.directory.getCanonicalFile()
+        Path path = canonical.toPath()
+        WatchKey wk = path.register(watchService, kinds)
+        watchedDirectories.put(canonical, wk)
+        
+        if (muOptions.watchedDirectories.add(canonical.toString()))
+            saveMuSettings()
+    }
+
+    void onDirectoryUnsharedEvent(DirectoryUnsharedEvent e) {
+        WatchKey wk = watchedDirectories.remove(e.directory)
+        wk?.cancel()
+        
+        if (muOptions.watchedDirectories.remove(e.directory.toString()))
+            saveMuSettings()
+    }
+    
+    private void saveMuSettings() {
+        File muSettingsFile = new File(home, "MuWire.properties")
+        muSettingsFile.withOutputStream {
+            muOptions.write(it)
+        }
+    }
+
+    private void watch() {
+        try {
+            while(!shutdown) {
+                WatchKey key = watchService.take()
+                key.pollEvents().each {
+                    switch(it.kind()) {
+                        case ENTRY_CREATE: processCreated(key.watchable(), it.context()); break
+                        case ENTRY_MODIFY: processModified(key.watchable(), it.context()); break
+                        case ENTRY_DELETE: processDeleted(key.watchable(), it.context()); break
+                    }
+                }
+                key.reset()
+            }
+        } catch (InterruptedException|ClosedWatchServiceException e) {
+            if (!shutdown)
+                throw e
+        }
+    }
+
+
+    private void processCreated(Path parent, Path path) {
+        File f= join(parent, path)
+        log.fine("created entry $f")
+        if (f.isDirectory())
+            f.toPath().register(watchService, kinds)
+        else
+            waitingFiles.put(f, System.currentTimeMillis())
+    }
+
+    private void processModified(Path parent, Path path) {
+        File f = join(parent, path)
+        log.fine("modified entry $f")
+        if (!fileManager.getNegativeTree().fileToNode.containsKey(f))
+            waitingFiles.put(f, System.currentTimeMillis())
+    }
+
+    private void processDeleted(Path parent, Path path) {
+        File f = join(parent, path)
+        log.fine("deleted entry $f")
+        SharedFile sf = fileManager.fileToSharedFile.get(f)
+        if (sf != null)
+            eventBus.publish(new FileUnsharedEvent(unsharedFile : sf, deleted : true))
+    }
+
+    private static File join(Path parent, Path path) {
+        File parentFile = parent.toFile().getCanonicalFile()
+        new File(parentFile, path.toFile().getName()).getCanonicalFile()
+    }
+
+    private void publish() {
+        try {
+            while(!shutdown) {
+                Thread.sleep(WAIT_TIME)
+                long now = System.currentTimeMillis()
+                def published = []
+                waitingFiles.each { file, timestamp ->
+                    if (now - timestamp > WAIT_TIME) {
+                        log.fine("publishing file $file")
+                        eventBus.publish new FileSharedEvent(file : file)
+                        published << file
+                    }
+                }
+                published.each {
+                    waitingFiles.remove(it)
+                }
+            }
+        } catch (InterruptedException e) {
+            if (!shutdown)
+                throw e
+        }
+    }
 }

core/src/main/groovy/com/muwire/core/files/FileDownloadedEvent.groovy

@@ -8,5 +8,5 @@ import net.i2p.data.Destination
 
 class FileDownloadedEvent extends Event {
     Downloader downloader
-	DownloadedFile downloadedFile
+    DownloadedFile downloadedFile
 }

core/src/main/groovy/com/muwire/core/files/FileHashedEvent.groovy

@@ -5,6 +5,12 @@ import com.muwire.core.SharedFile
 
 class FileHashedEvent extends Event {
 
-	SharedFile sharedFile
-	String error
+    SharedFile sharedFile
+    String error
+
+    @Override
+    public String toString() {
+        super.toString() + " sharedFile " + sharedFile?.file.getAbsolutePath() + " error: $error"
+    }
+
 }

core/src/main/groovy/com/muwire/core/files/FileHasher.groovy

@@ -1,6 +1,7 @@
 package com.muwire.core.files
 
 import com.muwire.core.InfoHash
+import com.muwire.core.util.DataUtil
 
 import net.i2p.data.Base64
 
@@ -12,72 +13,78 @@ import java.security.NoSuchAlgorithmException
 
 class FileHasher {
 
-	/** max size of shared file is 128 GB */
-	public static final long MAX_SIZE = 0x1L << 37
-	
-	/**
-	 * @param size of the file to be shared
-	 * @return the size of each piece in power of 2
-	 */
-	static int getPieceSize(long size) {
-		if (size <= 0x1 << 30)
-			return 17
-		
-		for (int i = 31; i <= 37; i++) {
-			if (size <= 0x1L << i) {
-				return i-13
-			}
-		}
-		
-		throw new IllegalArgumentException("File too large $size")
-	}
-	
-	final MessageDigest digest
-	
-	FileHasher() {
-		try {
-			digest = MessageDigest.getInstance("SHA-256")
-		} catch (NoSuchAlgorithmException impossible) {
-			digest = null
-			System.exit(1)
-		}
-	}
-	
-	InfoHash hashFile(File file) {
-		final long length = file.length()
-		final int size = 0x1 << getPieceSize(length)
-		int numPieces = (int) (length / size)
-		if (numPieces * size < length)
-			numPieces++
-			
-		def output = new ByteArrayOutputStream()
-		RandomAccessFile raf = new RandomAccessFile(file, "r")
-		try {
-			MappedByteBuffer buf
-			for (int i = 0; i < numPieces - 1; i++) {
-				buf = raf.getChannel().map(MapMode.READ_ONLY, ((long)size) * i, size)
-				digest.update buf
-				output.write(digest.digest(), 0, 32)
-			}
-			def lastPieceLength = length - (numPieces - 1) * ((long)size)
-			buf = raf.getChannel().map(MapMode.READ_ONLY, length - lastPieceLength, lastPieceLength)
-			digest.update buf
-			output.write(digest.digest(), 0, 32)
-		} finally {
-			raf.close()
-		}
-		
-		byte [] hashList = output.toByteArray()
-		InfoHash.fromHashList(hashList)
-	}
-    
+    public static final int MIN_PIECE_SIZE_POW2 = 17
+    public static final int MAX_PIECE_SIZE_POW2 = 37
+    /** max size of shared file is 128 GB */
+    public static final long MAX_SIZE = 0x1L << MAX_PIECE_SIZE_POW2
+
+    /**
+     * @param size of the file to be shared
+     * @return the size of each piece in power of 2
+     * piece size is minimum 128 KBytees and maximum 16 MBytes in power of 2 steps (2^17 - 2^24)
+     * there can be up to 8192 pieces maximum per file
+     */
+    static int getPieceSize(long size) {
+        if (size <= 0x1 << 30)
+            return MIN_PIECE_SIZE_POW2
+
+        for (int i = 31; i <= MAX_PIECE_SIZE_POW2; i++) {
+            if (size <= 0x1L << i) {
+                return i-13
+            }
+        }
+
+        throw new IllegalArgumentException("File too large $size")
+    }
+
+    final MessageDigest digest
+
+    FileHasher() {
+        try {
+            digest = MessageDigest.getInstance("SHA-256")
+        } catch (NoSuchAlgorithmException impossible) {
+            digest = null
+            System.exit(1)
+        }
+    }
+
+    InfoHash hashFile(File file) {
+        final long length = file.length()
+        final long size = 0x1L << getPieceSize(length)
+        int numPieces = (length / size).toInteger()
+        if (numPieces * size < length)
+            numPieces++
+
+        def output = new ByteArrayOutputStream()
+        RandomAccessFile raf = new RandomAccessFile(file, "r")
+        MappedByteBuffer buf = null
+        try {
+            for (int i = 0; i < numPieces - 1; i++) {
+                buf = raf.getChannel().map(MapMode.READ_ONLY, size * i, size.toInteger())
+                digest.update buf
+                DataUtil.tryUnmap(buf)
+                output.write(digest.digest(), 0, 32)
+            }
+            long lastPieceLength = length - (numPieces - 1) * size
+            buf = raf.getChannel().map(MapMode.READ_ONLY, length - lastPieceLength, lastPieceLength.toInteger())
+            digest.update buf
+            output.write(digest.digest(), 0, 32)
+        } finally {
+            raf.close()
+            DataUtil.tryUnmap(buf)
+        }
+
+        byte [] hashList = output.toByteArray()
+        InfoHash.fromHashList(hashList)
+    }
+
     public static void main(String[] args) {
         if (args.length != 1) {
             println "This utility computes an infohash of a file"
             println "Pass absolute path to a file as an argument"
             System.exit(1)
         }
-        
+
         def file = new File(args[0])
         file = file.getAbsoluteFile()
         def hasher = new FileHasher()

core/src/main/groovy/com/muwire/core/files/FileHashingEvent.groovy

@@ -0,0 +1,15 @@
+package com.muwire.core.files
+
+import com.muwire.core.Event
+import com.muwire.core.SharedFile
+
+class FileHashingEvent extends Event {
+
+    File hashingFile
+
+    @Override
+    public String toString() {
+        super.toString() + " hashingFile " + hashingFile.getAbsolutePath()
+    }
+
+}

core/src/main/groovy/com/muwire/core/files/FileLoadedEvent.groovy

@@ -5,5 +5,5 @@ import com.muwire.core.SharedFile
 
 class FileLoadedEvent extends Event {
 
-	SharedFile loadedFile
+    SharedFile loadedFile
 }

core/src/main/groovy/com/muwire/core/files/FileManager.groovy

@@ -8,131 +8,226 @@ import com.muwire.core.UILoadedEvent
 import com.muwire.core.search.ResultsEvent
 import com.muwire.core.search.SearchEvent
 import com.muwire.core.search.SearchIndex
+import com.muwire.core.util.DataUtil
 
 import groovy.util.logging.Log
+import net.i2p.data.Base64
 
 @Log
 class FileManager {
 
 
-	final EventBus eventBus
+    final EventBus eventBus
     final MuWireSettings settings
-	final Map<InfoHash, Set<SharedFile>> rootToFiles = Collections.synchronizedMap(new HashMap<>())
-	final Map<File, SharedFile> fileToSharedFile = Collections.synchronizedMap(new HashMap<>())
-	final Map<String, Set<File>> nameToFiles = new HashMap<>()
-	final SearchIndex index = new SearchIndex()
-	
-	FileManager(EventBus eventBus, MuWireSettings settings) {
+    final Map<InfoHash, Set<SharedFile>> rootToFiles = Collections.synchronizedMap(new HashMap<>())
+    final Map<File, SharedFile> fileToSharedFile = Collections.synchronizedMap(new HashMap<>())
+    final Map<String, Set<File>> nameToFiles = new HashMap<>()
+    final Map<String, Set<File>> commentToFile = new HashMap<>()
+    final SearchIndex index = new SearchIndex()
+    final FileTree negativeTree = new FileTree()
+
+    FileManager(EventBus eventBus, MuWireSettings settings) {
         this.settings = settings
-		this.eventBus = eventBus
-	}
-	
+        this.eventBus = eventBus
+        
+        for (String negative : settings.negativeFileTree) {
+            negativeTree.add(new File(negative))
+        }
+    }
+    
     void onFileHashedEvent(FileHashedEvent e) {
         if (e.sharedFile != null)
             addToIndex(e.sharedFile)
     }
-	
-	void onFileLoadedEvent(FileLoadedEvent e) {
-		addToIndex(e.loadedFile)
-	}
-	
+
+    void onFileLoadedEvent(FileLoadedEvent e) {
+        addToIndex(e.loadedFile)
+    }
+
     void onFileDownloadedEvent(FileDownloadedEvent e) {
         if (settings.shareDownloadedFiles) {
             addToIndex(e.downloadedFile)
         }
     }
-	
-	private void addToIndex(SharedFile sf) {
+
+    private void addToIndex(SharedFile sf) {
         log.info("Adding shared file " + sf.getFile())
-		InfoHash infoHash = sf.getInfoHash()
-		Set<SharedFile> existing = rootToFiles.get(infoHash)
-		if (existing == null) {
+        InfoHash infoHash = sf.getInfoHash()
+        Set<SharedFile> existing = rootToFiles.get(infoHash)
+        if (existing == null) {
             log.info("adding new root")
-			existing = new HashSet<>()
-			rootToFiles.put(infoHash, existing);
-		}
-		existing.add(sf)
-		fileToSharedFile.put(sf.file, sf)
-		
-		String name = sf.getFile().getName()
-		Set<File> existingFiles = nameToFiles.get(name)
-		if (existingFiles == null) {
-			existingFiles = new HashSet<>()
-			nameToFiles.put(name, existingFiles)
-		}
-		existingFiles.add(sf.getFile())
-		
-		index.add(name)
-	}
-	
-	void onFileUnsharedEvent(FileUnsharedEvent e) {
-		SharedFile sf = e.unsharedFile
-		InfoHash infoHash = sf.getInfoHash()
-		Set<SharedFile> existing = rootToFiles.get(infoHash)
-		if (existing != null) {
-			existing.remove(sf)
-			if (existing.isEmpty()) {
-				rootToFiles.remove(infoHash)
-			}
-		}
-		
-		fileToSharedFile.remove(sf.file)
-		
-		String name = sf.getFile().getName()
-		Set<File> existingFiles = nameToFiles.get(name)
-		if (existingFiles != null) {
-			existingFiles.remove(sf.file)
-			if (existingFiles.isEmpty()) {
-				nameToFiles.remove(name)
-			}
-		}
-		
-		index.remove(name)
-	}
-	
-	Map<File, SharedFile> getSharedFiles() {
+            existing = new HashSet<>()
+            rootToFiles.put(infoHash, existing);
+        }
+        existing.add(sf)
+        fileToSharedFile.put(sf.file, sf)
+        
+        negativeTree.remove(sf.file)
+        String parent = sf.getFile().getParent()
+        if (parent != null && settings.watchedDirectories.contains(parent)) {
+            negativeTree.add(sf.file.getParentFile())
+        }
+        saveNegativeTree()
+
+        String name = sf.getFile().getName()
+        Set<File> existingFiles = nameToFiles.get(name)
+        if (existingFiles == null) {
+            existingFiles = new HashSet<>()
+            nameToFiles.put(name, existingFiles)
+        }
+        existingFiles.add(sf.getFile())
+
+        String comment = sf.getComment()
+        if (comment != null) {
+            comment = DataUtil.readi18nString(Base64.decode(comment))
+            index.add(comment)
+            Set<File> existingComment = commentToFile.get(comment)
+            if(existingComment == null) {
+                existingComment = new HashSet<>()
+                commentToFile.put(comment, existingComment)
+            }
+            existingComment.add(sf.getFile())
+        }
+        
+        index.add(name)
+    }
+
+    void onFileUnsharedEvent(FileUnsharedEvent e) {
+        SharedFile sf = e.unsharedFile
+        InfoHash infoHash = sf.getInfoHash()
+        Set<SharedFile> existing = rootToFiles.get(infoHash)
+        if (existing != null) {
+            existing.remove(sf)
+            if (existing.isEmpty()) {
+                rootToFiles.remove(infoHash)
+            }
+        }
+
+        fileToSharedFile.remove(sf.file)
+        if (!e.deleted && negativeTree.fileToNode.containsKey(sf.file.getParentFile())) {
+            negativeTree.add(sf.file)
+            saveNegativeTree()
+        }
+
+        String name = sf.getFile().getName()
+        Set<File> existingFiles = nameToFiles.get(name)
+        if (existingFiles != null) {
+            existingFiles.remove(sf.file)
+            if (existingFiles.isEmpty()) {
+                nameToFiles.remove(name)
+            }
+        }
+        
+        String comment = sf.getComment()
+        if (comment != null) {
+            Set<File> existingComment = commentToFile.get(comment)
+            if (existingComment != null) {
+                existingComment.remove(sf.getFile())
+                if (existingComment.isEmpty()) {
+                    commentToFile.remove(comment)
+                    index.remove(comment)
+                }
+            }
+        }
+
+        index.remove(name)
+    }
+    
+    void onUICommentEvent(UICommentEvent e) {
+        if (e.oldComment != null) {
+            def comment = DataUtil.readi18nString(Base64.decode(e.oldComment))
+            Set<File> existingFiles = commentToFile.get(comment) 
+            existingFiles.remove(e.sharedFile.getFile())
+            if (existingFiles.isEmpty()) {
+                commentToFile.remove(comment)
+                index.remove(comment)
+            }
+        }
+        
+        String comment = e.sharedFile.getComment()
+        comment = DataUtil.readi18nString(Base64.decode(comment))
+        if (comment != null) {
+            index.add(comment)
+            Set<File> existingComment = commentToFile.get(comment)
+            if(existingComment == null) {
+                existingComment = new HashSet<>()
+                commentToFile.put(comment, existingComment)
+            }
+            existingComment.add(e.sharedFile.getFile())
+        }        
+    }
+
+    Map<File, SharedFile> getSharedFiles() {
         synchronized(fileToSharedFile) {
             return new HashMap<>(fileToSharedFile)
         }
-	}
-    
+    }
+
     Set<SharedFile> getSharedFiles(byte []root) {
             return rootToFiles.get(new InfoHash(root))
     }
-	
-	void onSearchEvent(SearchEvent e) {
-		// hash takes precedence
-		ResultsEvent re = null
-		if (e.searchHash != null) {
+
+    void onSearchEvent(SearchEvent e) {
+        // hash takes precedence
+        ResultsEvent re = null
+        if (e.searchHash != null) {
             Set<SharedFile> found
             found = rootToFiles.get new InfoHash(e.searchHash)
             found = filter(found, e.oobInfohash)
-			if (found != null && !found.isEmpty())
-				re = new ResultsEvent(results: found.asList(), uuid: e.uuid, searchEvent: e)
-		} else {
-			def names = index.search e.searchTerms
-			Set<File> files = new HashSet<>()
-			names.each { files.addAll nameToFiles.getOrDefault(it, []) }
-			Set<SharedFile> sharedFiles = new HashSet<>()
-			files.each { sharedFiles.add fileToSharedFile[it] }
+            if (found != null && !found.isEmpty()) {
+                found.each { it.hit() }
+                re = new ResultsEvent(results: found.asList(), uuid: e.uuid, searchEvent: e)
+            }
+        } else {
+            def names = index.search e.searchTerms
+            Set<File> files = new HashSet<>()
+            names.each { 
+                files.addAll nameToFiles.getOrDefault(it, [])
+                if (e.searchComments)
+                    files.addAll commentToFile.getOrDefault(it, [])
+            }
+            Set<SharedFile> sharedFiles = new HashSet<>()
+            files.each { sharedFiles.add fileToSharedFile[it] }
             files = filter(sharedFiles, e.oobInfohash)
-			if (!sharedFiles.isEmpty())
-				re = new ResultsEvent(results: sharedFiles.asList(), uuid: e.uuid, searchEvent: e)
-			
-		}
-		
-		if (re != null)
-			eventBus.publish(re)
-	}
-    
+            
+            if (!sharedFiles.isEmpty()) {
+                sharedFiles.each { it.hit() }
+                re = new ResultsEvent(results: sharedFiles.asList(), uuid: e.uuid, searchEvent: e)
+            }
+
+        }
+
+        if (re != null)
+            eventBus.publish(re)
+    }
+
     private static Set<SharedFile> filter(Set<SharedFile> files, boolean oob) {
         if (!oob)
             return files
         Set<SharedFile> rv = new HashSet<>()
-        files.each { 
+        files.each {
             if (it.getPieceSize() != 0)
                 rv.add(it)
         }
         rv
     }
+    
+    void onDirectoryUnsharedEvent(DirectoryUnsharedEvent e) {
+        negativeTree.remove(e.directory)
+        saveNegativeTree()
+        e.directory.listFiles().each {
+            if (it.isDirectory())
+                eventBus.publish(new DirectoryUnsharedEvent(directory : it))
+            else {
+                SharedFile sf = fileToSharedFile.get(it)
+                if (sf != null)
+                    eventBus.publish(new FileUnsharedEvent(unsharedFile : sf))
+            }
+        }
+    }
+    
+    private void saveNegativeTree() {
+        settings.negativeFileTree.clear()
+        settings.negativeFileTree.addAll(negativeTree.fileToNode.keySet().collect { it.getAbsolutePath() })
+    }
 }

core/src/main/groovy/com/muwire/core/files/FileSharedEvent.groovy

@@ -4,5 +4,10 @@ import com.muwire.core.Event
 
 class FileSharedEvent extends Event {
 
-	File file
+    File file
+
+    @Override
+    public String toString() {
+        return super.toString() + " file: "+file.getAbsolutePath()
+    }
 }

core/src/main/groovy/com/muwire/core/files/FileTree.groovy

@@ -0,0 +1,64 @@
+package com.muwire.core.files
+
+import java.util.concurrent.ConcurrentHashMap
+
+class FileTree {
+    
+    private final TreeNode root = new TreeNode()
+    private final Map<File, TreeNode> fileToNode = new ConcurrentHashMap<>()
+    
+    void add(File file) {
+        List<File> path = new ArrayList<>()
+        path.add(file)
+        while (file.getParentFile() != null) {
+            path.add(file.getParentFile())
+            file = file.getParentFile()
+        }
+        
+        Collections.reverse(path)
+        
+        TreeNode current = root
+        for (File element : path) {
+            TreeNode existing = fileToNode.get(element)
+            if (existing == null) {
+                existing = new TreeNode()
+                existing.file = element
+                existing.parent = current
+                fileToNode.put(element, existing)
+                current.children.add(existing)
+            }
+            current = existing
+        }
+    }
+
+    boolean remove(File file) {
+        TreeNode node = fileToNode.remove(file)
+        if (node == null) {
+            return false
+        }
+        node.parent.children.remove(node)
+        if (node.parent.children.isEmpty() && node.parent != root)
+            remove(node.parent.file)
+        def copy = new ArrayList(node.children)
+        for (TreeNode child : copy)
+            remove(child.file)
+        true
+    }    
+    
+    private static class TreeNode {
+        TreeNode parent
+        File file
+        final Set<TreeNode> children = new HashSet<>()
+        
+        public int hashCode() {
+            file.hashCode()
+        }
+        
+        public boolean equals(Object o) {
+            if (!(o instanceof TreeNode))
+                return false
+            TreeNode other = (TreeNode)o
+            file == other.file
+        }
+    }
+}

core/src/main/groovy/com/muwire/core/files/FileUnsharedEvent.groovy

@@ -4,5 +4,6 @@ import com.muwire.core.Event
 import com.muwire.core.SharedFile
 
 class FileUnsharedEvent extends Event {
-	SharedFile unsharedFile
+    SharedFile unsharedFile
+    boolean deleted
 }

core/src/main/groovy/com/muwire/core/files/HasherService.groovy

@@ -4,44 +4,63 @@ import java.util.concurrent.Executor
 import java.util.concurrent.Executors
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
 import com.muwire.core.SharedFile
 
 class HasherService {
 
-	final FileHasher hasher
-	final EventBus eventBus
+    final FileHasher hasher
+    final EventBus eventBus
     final FileManager fileManager
-	Executor executor
-	
-	HasherService(FileHasher hasher, EventBus eventBus, FileManager fileManager) {
-		this.hasher = hasher
-		this.eventBus = eventBus
+    final Set<File> hashed = new HashSet<>()
+    final MuWireSettings settings
+    Executor executor
+
+    HasherService(FileHasher hasher, EventBus eventBus, FileManager fileManager, MuWireSettings settings) {
+        this.hasher = hasher
+        this.eventBus = eventBus
         this.fileManager = fileManager
-	}
-	
-	void start() {
-		executor = Executors.newSingleThreadExecutor()
-	}
-	
-	void onFileSharedEvent(FileSharedEvent evt) {
-        if (fileManager.fileToSharedFile.containsKey(evt.file))
+        this.settings = settings
+    }
+
+    void start() {
+        executor = Executors.newSingleThreadExecutor()
+    }
+
+    void onFileSharedEvent(FileSharedEvent evt) {
+        File canonical = evt.file.getCanonicalFile()
+        if (!settings.shareHiddenFiles && canonical.isHidden())
             return
-		executor.execute( { -> process(evt.file) } as Runnable)
-	}
-	
-	private void process(File f) {
-		f = f.getCanonicalFile()
-		if (f.isDirectory()) {
-			f.listFiles().each {onFileSharedEvent new FileSharedEvent(file: it) }
-		} else {
-			if (f.length() == 0) {
-				eventBus.publish new FileHashedEvent(error: "Not sharing empty file $f")
-			} else if (f.length() > FileHasher.MAX_SIZE) {
-				eventBus.publish new FileHashedEvent(error: "$f is too large to be shared ${f.length()}")
-			} else {
-				def hash = hasher.hashFile f
-				eventBus.publish new FileHashedEvent(sharedFile: new SharedFile(f, hash, FileHasher.getPieceSize(f.length())))
-			}
-		}
-	}
+        if (fileManager.fileToSharedFile.containsKey(canonical)) 
+            return
+        if (hashed.add(canonical))
+            executor.execute( { -> process(canonical) } as Runnable)
+    }
+    
+    void onFileUnsharedEvent(FileUnsharedEvent evt) {
+        hashed.remove(evt.unsharedFile.file)
+    }
+    
+    void onDirectoryUnsharedEvent(DirectoryUnsharedEvent evt) {
+        hashed.remove(evt.directory)
+    }
+
+    private void process(File f) {
+        if (f.isDirectory()) {
+            eventBus.publish(new DirectoryWatchedEvent(directory : f))
+            f.listFiles().each {
+                eventBus.publish new FileSharedEvent(file: it)
+            }
+        } else {
+            if (f.length() == 0) {
+                eventBus.publish new FileHashedEvent(error: "Not sharing empty file $f")
+            } else if (f.length() > FileHasher.MAX_SIZE) {
+                eventBus.publish new FileHashedEvent(error: "$f is too large to be shared ${f.length()}")
+            } else {
+                eventBus.publish new FileHashingEvent(hashingFile: f)
+                def hash = hasher.hashFile f
+                eventBus.publish new FileHashedEvent(sharedFile: new SharedFile(f, hash, FileHasher.getPieceSize(f.length())))
+            }
+        }
+    }
 }

core/src/main/groovy/com/muwire/core/files/PersisterService.groovy

@@ -3,6 +3,9 @@ package com.muwire.core.files
 import java.nio.file.CopyOption
 import java.nio.file.Files
 import java.nio.file.StandardCopyOption
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
+import java.util.concurrent.ThreadFactory
 import java.util.logging.Level
 import java.util.stream.Collectors
 
@@ -11,6 +14,7 @@ import com.muwire.core.EventBus
 import com.muwire.core.InfoHash
 import com.muwire.core.Service
 import com.muwire.core.SharedFile
+import com.muwire.core.UILoadedEvent
 import com.muwire.core.util.DataUtil
 
 import groovy.json.JsonOutput
@@ -22,135 +26,156 @@ import net.i2p.data.Destination
 @Log
 class PersisterService extends Service {
 
-	final File location
-	final EventBus listener
-	final int interval
-	final Timer timer
-	final FileManager fileManager
-	
-	PersisterService(File location, EventBus listener, int interval, FileManager fileManager) {
-		this.location = location
-		this.listener = listener
-		this.interval = interval
-		this.fileManager = fileManager
-		timer = new Timer("file persister", true)
-	}
-	
-	void start() {
-		timer.schedule({load()} as TimerTask, 1)
-	}
-	
-	void stop() {
-		timer.cancel()
-	}
-	
-	void load() {
-		if (location.exists() && location.isFile()) {
-			def slurper = new JsonSlurper()
-			try {
-				location.eachLine {
-					if (it.trim().length() > 0) {
-						def parsed = slurper.parseText it
-						def event = fromJson parsed
-						if (event != null) {
+    final File location
+    final EventBus listener
+    final int interval
+    final Timer timer
+    final FileManager fileManager
+    final ExecutorService persisterExecutor = Executors.newSingleThreadExecutor({ r -> 
+        new Thread(r, "file persister")
+    } as ThreadFactory)
+
+    PersisterService(File location, EventBus listener, int interval, FileManager fileManager) {
+        this.location = location
+        this.listener = listener
+        this.interval = interval
+        this.fileManager = fileManager
+        timer = new Timer("file persister timer", true)
+    }
+
+    void stop() {
+        timer.cancel()
+    }
+
+    void onUILoadedEvent(UILoadedEvent e) {
+        timer.schedule({load()} as TimerTask, 1)
+    }
+    
+    void onUIPersistFilesEvent(UIPersistFilesEvent e) {
+        persistFiles()
+    }
+
+    void load() {
+        Thread.currentThread().setPriority(Thread.MIN_PRIORITY)
+
+        if (location.exists() && location.isFile()) {
+            int loaded = 0
+            def slurper = new JsonSlurper()
+            try {
+                location.eachLine {
+                    if (it.trim().length() > 0) {
+                        def parsed = slurper.parseText it
+                        def event = fromJson parsed
+                        if (event != null) {
                             log.fine("loaded file $event.loadedFile.file")
-							listener.publish event
-						}
-					}
-				}
+                            listener.publish event
+                            loaded++
+                            if (loaded % 10 == 0)
+                                Thread.sleep(20)
+                        }
+                    }
+                }
                 listener.publish(new AllFilesLoadedEvent())
-			} catch (IllegalArgumentException|NumberFormatException e) {
+            } catch (IllegalArgumentException|NumberFormatException e) {
                 log.log(Level.WARNING, "couldn't load files",e)
-			}
-		} else {
+            }
+        } else {
             listener.publish(new AllFilesLoadedEvent())
         }
-		timer.schedule({persistFiles()} as TimerTask, 0, interval)
-		loaded = true
-	}
-	
-	private static FileLoadedEvent fromJson(def json) {
-		if (json.file == null || json.length == null || json.infoHash == null || json.hashList == null)
-			throw new IllegalArgumentException()
-		if (!(json.hashList instanceof List))
-			throw new IllegalArgumentException()
-			
-		def file = new File(DataUtil.readi18nString(Base64.decode(json.file)))
-		file = file.getCanonicalFile()
-		if (!file.exists() || file.isDirectory())
-			return null
-		long length = Long.valueOf(json.length)
-		if (length != file.length())
-			return null
-		
-		List hashList = (List) json.hashList
-		ByteArrayOutputStream baos = new ByteArrayOutputStream()
-		hashList.each {
-			byte [] hash = Base64.decode it.toString()
-			if (hash == null)
-				throw new IllegalArgumentException()
-			baos.write hash
-		}
-		byte[] hashListBytes = baos.toByteArray()
-		
-		InfoHash ih = InfoHash.fromHashList(hashListBytes)
-		byte [] root = Base64.decode(json.infoHash.toString())
-		if (root == null)
-			throw new IllegalArgumentException()
-		if (!Arrays.equals(root, ih.getRoot()))
-			return null
-			
+        timer.schedule({persistFiles()} as TimerTask, 1000, interval)
+        loaded = true
+    }
+
+    private static FileLoadedEvent fromJson(def json) {
+        if (json.file == null || json.length == null || json.infoHash == null || json.hashList == null)
+            throw new IllegalArgumentException()
+        if (!(json.hashList instanceof List))
+            throw new IllegalArgumentException()
+
+        def file = new File(DataUtil.readi18nString(Base64.decode(json.file)))
+        file = file.getCanonicalFile()
+        if (!file.exists() || file.isDirectory())
+            return null
+        long length = Long.valueOf(json.length)
+        if (length != file.length())
+            return null
+
+        List hashList = (List) json.hashList
+        ByteArrayOutputStream baos = new ByteArrayOutputStream()
+        hashList.each {
+            byte [] hash = Base64.decode it.toString()
+            if (hash == null)
+                throw new IllegalArgumentException()
+            baos.write hash
+        }
+        byte[] hashListBytes = baos.toByteArray()
+
+        InfoHash ih = InfoHash.fromHashList(hashListBytes)
+        byte [] root = Base64.decode(json.infoHash.toString())
+        if (root == null)
+            throw new IllegalArgumentException()
+        if (!Arrays.equals(root, ih.getRoot()))
+            return null
+
         int pieceSize = 0
         if (json.pieceSize != null)
             pieceSize = json.pieceSize
-            
+
         if (json.sources != null) {
-			List sources = (List)json.sources
-			Set<Destination> sourceSet = sources.stream().map({d -> new Destination(d.toString())}).collect Collectors.toSet()
-			DownloadedFile df = new DownloadedFile(file, ih, pieceSize, sourceSet)
-			return new FileLoadedEvent(loadedFile : df)
-		}
-        
-		 
-		SharedFile sf = new SharedFile(file, ih, pieceSize)
-		return new FileLoadedEvent(loadedFile: sf)
-		
-	}
-	
-	private void persistFiles() {
-		def sharedFiles = fileManager.getSharedFiles()
-        
-        File tmp = File.createTempFile("muwire-files", "tmp")
-        tmp.deleteOnExit()
-		tmp.withPrintWriter { writer ->
-			sharedFiles.each { k, v ->
-				def json = toJson(k,v)
-				json = JsonOutput.toJson(json)
-				writer.println json
-			}
-		}
-        Files.copy(tmp.toPath(), location.toPath(), StandardCopyOption.REPLACE_EXISTING)
-        tmp.delete()
-	}
-	
-	private def toJson(File f, SharedFile sf) {
-		def json = [:]
-		json.file = Base64.encode DataUtil.encodei18nString(f.getCanonicalFile().toString())
-		json.length = f.length()
-		InfoHash ih = sf.getInfoHash()
-		json.infoHash = Base64.encode ih.getRoot()
+            List sources = (List)json.sources
+            Set<Destination> sourceSet = sources.stream().map({d -> new Destination(d.toString())}).collect Collectors.toSet()
+            DownloadedFile df = new DownloadedFile(file, ih, pieceSize, sourceSet)
+            df.setComment(json.comment)
+            return new FileLoadedEvent(loadedFile : df)
+        }
+
+        int hits = 0
+        if (json.hits != null)
+            hits = json.hits
+
+        SharedFile sf = new SharedFile(file, ih, pieceSize)
+        sf.setComment(json.comment)
+        sf.hits = hits
+        if (json.downloaders != null)
+            sf.getDownloaders().addAll(json.downloaders)
+        return new FileLoadedEvent(loadedFile: sf)
+
+    }
+
+    private void persistFiles() {
+        persisterExecutor.submit( {
+            def sharedFiles = fileManager.getSharedFiles()
+
+            File tmp = File.createTempFile("muwire-files", "tmp")
+            tmp.deleteOnExit()
+            tmp.withPrintWriter { writer ->
+                sharedFiles.each { k, v ->
+                    def json = toJson(k,v)
+                    json = JsonOutput.toJson(json)
+                    writer.println json
+                }
+            }
+            Files.copy(tmp.toPath(), location.toPath(), StandardCopyOption.REPLACE_EXISTING)
+            tmp.delete()
+        } as Runnable)
+    }
+
+    private def toJson(File f, SharedFile sf) {
+        def json = [:]
+        json.file = sf.getB64EncodedFileName()
+        json.length = sf.getCachedLength()
+        InfoHash ih = sf.getInfoHash()
+        json.infoHash = sf.getB64EncodedHashRoot()
         json.pieceSize = sf.getPieceSize()
-		byte [] tmp = new byte [32]
-		json.hashList = []
-		for (int i = 0;i < ih.getHashList().length / 32; i++) {
-			System.arraycopy(ih.getHashList(), i * 32, tmp, 0, 32)
-			json.hashList.add Base64.encode(tmp)
-		}
-		
-		if (sf instanceof DownloadedFile) {
-			json.sources = sf.sources.stream().map( {d -> d.toBase64()}).collect(Collectors.toList())
-		}
-		
-		json
-	}
+        json.hashList = sf.getB64EncodedHashList()
+        json.comment = sf.getComment()
+        json.hits = sf.getHits()
+        json.downloaders = sf.getDownloaders()
+
+        if (sf instanceof DownloadedFile) {
+            json.sources = sf.sources.stream().map( {d -> d.toBase64()}).collect(Collectors.toList())
+        }
+
+        json
+    }
 }

core/src/main/groovy/com/muwire/core/files/UICommentEvent.groovy

@@ -0,0 +1,9 @@
+package com.muwire.core.files
+
+import com.muwire.core.Event
+import com.muwire.core.SharedFile
+
+class UICommentEvent extends Event {
+    SharedFile sharedFile
+    String oldComment
+}

core/src/main/groovy/com/muwire/core/files/UIPersistFilesEvent.groovy

@@ -0,0 +1,6 @@
+package com.muwire.core.files
+
+import com.muwire.core.Event
+
+class UIPersistFilesEvent extends Event {
+}

core/src/main/groovy/com/muwire/core/hostcache/CacheClient.groovy

@@ -17,177 +17,177 @@ import net.i2p.data.Destination
 
 @Log
 class CacheClient {
-	
-	private static final int CRAWLER_RETURN = 10
-	
-	final EventBus eventBus
-	final HostCache cache
-	final ConnectionManager manager
-	final I2PSession session
-	final long interval
-	final MuWireSettings settings
-	final Timer timer
 
-	public CacheClient(EventBus eventBus, HostCache cache, 
-		ConnectionManager manager, I2PSession session,
-		MuWireSettings settings, long interval) {
-		this.eventBus = eventBus
-		this.cache = cache
-		this.manager = manager
-		this.session = session
-		this.settings = settings
-		this.interval = interval
-		this.timer = new Timer("hostcache-client",true)
-	}
-	
-	void start() {
-		session.addMuxedSessionListener(new Listener(), I2PSession.PROTO_DATAGRAM, 0)
-		timer.schedule({queryIfNeeded()} as TimerTask, 1, interval)
-	}
-	
-	void stop() {
-		timer.cancel()
-	}
-	
-	private void queryIfNeeded() {
-		if (!manager.getConnections().isEmpty())
-			return
-		if (!cache.getHosts(1).isEmpty())
-			return
-		
-		log.info "Will query hostcaches"	
-		
-		def ping = [type: "Ping", version: 1, leaf: settings.isLeaf()]
-		ping = JsonOutput.toJson(ping)
-		def maker = new I2PDatagramMaker(session)
-		ping = maker.makeI2PDatagram(ping.bytes)
-		def options = new SendMessageOptions()
-		options.setSendLeaseSet(true)
-		CacheServers.getCacheServers().each {
-			log.info "Querying hostcache ${it.toBase32()}"
-			session.sendMessage(it, ping, 0, ping.length, I2PSession.PROTO_DATAGRAM, 1, 0, options)
-		}
-	}
-	
-	class Listener implements I2PSessionMuxedListener {
-		
-		private final JsonSlurper slurper = new JsonSlurper()
+    private static final int CRAWLER_RETURN = 10
 
-		@Override
-		public void messageAvailable(I2PSession session, int msgId, long size) {
-		}
+    final EventBus eventBus
+    final HostCache cache
+    final ConnectionManager manager
+    final I2PSession session
+    final long interval
+    final MuWireSettings settings
+    final Timer timer
 
-		@Override
-		public void messageAvailable(I2PSession session, int msgId, long size, int proto, int fromport, int toport) {
-			
-			if (proto != I2PSession.PROTO_DATAGRAM) {
-				log.warning "Received unexpected protocol $proto"
-				return
-			}
-			
-			def payload = session.receiveMessage(msgId)
-			def dissector = new I2PDatagramDissector()
-			try {
-				dissector.loadI2PDatagram(payload)
-				def sender = dissector.getSender()
-				log.info("Received something from ${sender.toBase32()}")
-				
-				payload = dissector.getPayload()
-				payload = slurper.parse(payload)
-				
-				if (payload.type == null) {
-					log.warning("type missing")
-					return
-				}
-				
-				switch(payload.type) {
-					case "Pong" : handlePong(sender, payload); break
-					case "CrawlerPing": handleCrawlerPing(session, sender, payload); break
-					default : log.warning("unknown type ${payload.type}")
-				}
-			} catch (Exception e) {
-				log.warning("Invalid datagram $e")
-			}
-		}
+    public CacheClient(EventBus eventBus, HostCache cache,
+        ConnectionManager manager, I2PSession session,
+        MuWireSettings settings, long interval) {
+        this.eventBus = eventBus
+        this.cache = cache
+        this.manager = manager
+        this.session = session
+        this.settings = settings
+        this.interval = interval
+        this.timer = new Timer("hostcache-client",true)
+    }
 
-		@Override
-		public void reportAbuse(I2PSession session, int severity) {
-		}
+    void start() {
+        session.addMuxedSessionListener(new Listener(), I2PSession.PROTO_DATAGRAM, 0)
+        timer.schedule({queryIfNeeded()} as TimerTask, 1, interval)
+    }
 
-		@Override
-		public void disconnected(I2PSession session) {
-			log.severe "I2P session disconnected"
-		}
+    void stop() {
+        timer.cancel()
+    }
 
-		@Override
-		public void errorOccurred(I2PSession session, String message, Throwable error) {
-			log.severe "I2P error occured $message $error"
-		}
-		
-	}
-	
-	private void handlePong(Destination from, def pong) {
-		if (!CacheServers.isRegistered(from)) {
-			log.warning("received pong from non-registered destination")
-			return
-		}
-		
-		if (pong.pongs == null) {
-			log.warning("malformed pong - no pongs")
-			return
-		}
-		
-		pong.pongs.asList().each { 
-			Destination dest = new Destination(it)
-			if (!session.getMyDestination().equals(dest))
-				eventBus.publish(new HostDiscoveredEvent(destination: dest, fromHostcache : true)) 
-		}
-		
-	}
-	
-	private void handleCrawlerPing(I2PSession session, Destination from, def ping) {
-		if (settings.isLeaf()) {
-			log.warning("Received crawler ping but I'm a leaf")
-			return
-		}
-		
-		switch(settings.getCrawlerResponse()) {
-			case CrawlerResponse.NONE:
-				log.info("Responding to crawlers is disabled by user")
-				break
-			case CrawlerResponse.ALL:
-				respondToCrawler(session, from, ping)
-				break;
-			case CrawlerResponse.REGISTERED:
-				if (CacheServers.isRegistered(from))
-					respondToCrawler(session, from, ping)
-				else
-					log.warning("Ignoring crawler ping from non-registered crawler")
-				break
-		}
-	}
-	
-	private void respondToCrawler(I2PSession session, Destination from, def ping) {
-		log.info "responding to crawler ping"
-		
-		def neighbors = manager.getConnections().collect { c -> c.endpoint.destination.toBase64() }
-		Collections.shuffle(neighbors)
-		if (neighbors.size() > CRAWLER_RETURN)
-			neighbors = neighbors[0..CRAWLER_RETURN - 1]
-		
-		def upManager = (UltrapeerConnectionManager) manager;
-		def pong = [:]
-		pong.peers = neighbors
-		pong.uuid = ping.uuid
-		pong.type = "CrawlerPong"
-		pong.version = 1
-		pong.leafSlots = upManager.hasLeafSlots()
-		pong.peerSlots = upManager.hasPeerSlots()
-		pong = JsonOutput.toJson(pong)
-		
-		def maker = new I2PDatagramMaker(session)
-		pong = maker.makeI2PDatagram(pong.bytes)
-		session.sendMessage(from, pong, I2PSession.PROTO_DATAGRAM, 0, 0)
-	}
+    private void queryIfNeeded() {
+        if (!manager.getConnections().isEmpty())
+            return
+        if (!cache.getHosts(1).isEmpty())
+            return
+
+        log.info "Will query hostcaches"
+
+        def ping = [type: "Ping", version: 1, leaf: settings.isLeaf()]
+        ping = JsonOutput.toJson(ping)
+        def maker = new I2PDatagramMaker(session)
+        ping = maker.makeI2PDatagram(ping.bytes)
+        def options = new SendMessageOptions()
+        options.setSendLeaseSet(true)
+        CacheServers.getCacheServers().each {
+            log.info "Querying hostcache ${it.toBase32()}"
+            session.sendMessage(it, ping, 0, ping.length, I2PSession.PROTO_DATAGRAM, 1, 0, options)
+        }
+    }
+
+    class Listener implements I2PSessionMuxedListener {
+
+        private final JsonSlurper slurper = new JsonSlurper()
+
+        @Override
+        public void messageAvailable(I2PSession session, int msgId, long size) {
+        }
+
+        @Override
+        public void messageAvailable(I2PSession session, int msgId, long size, int proto, int fromport, int toport) {
+
+            if (proto != I2PSession.PROTO_DATAGRAM) {
+                log.warning "Received unexpected protocol $proto"
+                return
+            }
+
+            def payload = session.receiveMessage(msgId)
+            def dissector = new I2PDatagramDissector()
+            try {
+                dissector.loadI2PDatagram(payload)
+                def sender = dissector.getSender()
+                log.info("Received something from ${sender.toBase32()}")
+
+                payload = dissector.getPayload()
+                payload = slurper.parse(payload)
+
+                if (payload.type == null) {
+                    log.warning("type missing")
+                    return
+                }
+
+                switch(payload.type) {
+                    case "Pong" : handlePong(sender, payload); break
+                    case "CrawlerPing": handleCrawlerPing(session, sender, payload); break
+                    default : log.warning("unknown type ${payload.type}")
+                }
+            } catch (Exception e) {
+                log.warning("Invalid datagram $e")
+            }
+        }
+
+        @Override
+        public void reportAbuse(I2PSession session, int severity) {
+        }
+
+        @Override
+        public void disconnected(I2PSession session) {
+            log.severe "I2P session disconnected"
+        }
+
+        @Override
+        public void errorOccurred(I2PSession session, String message, Throwable error) {
+            log.severe "I2P error occured $message $error"
+        }
+
+    }
+
+    private void handlePong(Destination from, def pong) {
+        if (!CacheServers.isRegistered(from)) {
+            log.warning("received pong from non-registered destination")
+            return
+        }
+
+        if (pong.pongs == null) {
+            log.warning("malformed pong - no pongs")
+            return
+        }
+
+        pong.pongs.asList().each {
+            Destination dest = new Destination(it)
+            if (!session.getMyDestination().equals(dest))
+                eventBus.publish(new HostDiscoveredEvent(destination: dest, fromHostcache : true))
+        }
+
+    }
+
+    private void handleCrawlerPing(I2PSession session, Destination from, def ping) {
+        if (settings.isLeaf()) {
+            log.warning("Received crawler ping but I'm a leaf")
+            return
+        }
+
+        switch(settings.getCrawlerResponse()) {
+            case CrawlerResponse.NONE:
+                log.info("Responding to crawlers is disabled by user")
+                break
+            case CrawlerResponse.ALL:
+                respondToCrawler(session, from, ping)
+                break;
+            case CrawlerResponse.REGISTERED:
+                if (CacheServers.isRegistered(from))
+                    respondToCrawler(session, from, ping)
+                else
+                    log.warning("Ignoring crawler ping from non-registered crawler")
+                break
+        }
+    }
+
+    private void respondToCrawler(I2PSession session, Destination from, def ping) {
+        log.info "responding to crawler ping"
+
+        def neighbors = manager.getConnections().collect { c -> c.endpoint.destination.toBase64() }
+        Collections.shuffle(neighbors)
+        if (neighbors.size() > CRAWLER_RETURN)
+            neighbors = neighbors[0..CRAWLER_RETURN - 1]
+
+        def upManager = (UltrapeerConnectionManager) manager;
+        def pong = [:]
+        pong.peers = neighbors
+        pong.uuid = ping.uuid
+        pong.type = "CrawlerPong"
+        pong.version = 1
+        pong.leafSlots = upManager.hasLeafSlots()
+        pong.peerSlots = upManager.hasPeerSlots()
+        pong = JsonOutput.toJson(pong)
+
+        def maker = new I2PDatagramMaker(session)
+        pong = maker.makeI2PDatagram(pong.bytes)
+        session.sendMessage(from, pong, I2PSession.PROTO_DATAGRAM, 0, 0)
+    }
 
 }

core/src/main/groovy/com/muwire/core/hostcache/CacheServers.groovy

@@ -4,20 +4,25 @@ import net.i2p.data.Destination
 
 class CacheServers {
 
-	private static final int TO_GIVE = 3
-	private static Set<Destination> CACHES = [
-			new Destination("Wddh2E6FyyXBF7SvUYHKdN-vjf3~N6uqQWNeBDTM0P33YjiQCOsyedrjmDZmWFrXUJfJLWnCb5bnKezfk4uDaMyj~uvDG~yvLVcFgcPWSUd7BfGgym-zqcG1q1DcM8vfun-US7YamBlmtC6MZ2j-~Igqzmgshita8aLPCfNAA6S6e2UMjjtG7QIXlxpMec75dkHdJlVWbzrk9z8Qgru3YIk0UztYgEwDNBbm9wInsbHhr3HtAfa02QcgRVqRN2PnQXuqUJs7R7~09FZPEviiIcUpkY3FeyLlX1sgQFBeGeA96blaPvZNGd6KnNdgfLgMebx5SSxC-N4KZMSMBz5cgonQF3~m2HHFRSI85zqZNG5X9bJN85t80ltiv1W1es8ZnQW4es11r7MrvJNXz5bmSH641yJIvS6qI8OJJNpFVBIQSXLD-96TayrLQPaYw~uNZ-eXaE6G5dYhiuN8xHsFI1QkdaUaVZnvDGfsRbpS5GtpUbBDbyLkdPurG0i7dN1wAAAA")
-		]
+    private static final int TO_GIVE = 3
+    private static Set<Destination> CACHES = [
+            // zlatinb
+            new Destination("Wddh2E6FyyXBF7SvUYHKdN-vjf3~N6uqQWNeBDTM0P33YjiQCOsyedrjmDZmWFrXUJfJLWnCb5bnKezfk4uDaMyj~uvDG~yvLVcFgcPWSUd7BfGgym-zqcG1q1DcM8vfun-US7YamBlmtC6MZ2j-~Igqzmgshita8aLPCfNAA6S6e2UMjjtG7QIXlxpMec75dkHdJlVWbzrk9z8Qgru3YIk0UztYgEwDNBbm9wInsbHhr3HtAfa02QcgRVqRN2PnQXuqUJs7R7~09FZPEviiIcUpkY3FeyLlX1sgQFBeGeA96blaPvZNGd6KnNdgfLgMebx5SSxC-N4KZMSMBz5cgonQF3~m2HHFRSI85zqZNG5X9bJN85t80ltiv1W1es8ZnQW4es11r7MrvJNXz5bmSH641yJIvS6qI8OJJNpFVBIQSXLD-96TayrLQPaYw~uNZ-eXaE6G5dYhiuN8xHsFI1QkdaUaVZnvDGfsRbpS5GtpUbBDbyLkdPurG0i7dN1wAAAA"),
+            // sNL
+            new Destination("JC63wJNOqSJmymkj4~UJWywBTvDGikKMoYP0HX2Wz9c5l3otXSkwnxWAFL4cKr~Ygh3BNNi2t93vuLIiI1W8AsE42kR~PwRx~Y-WvIHXR6KUejRmOp-n8WidtjKg9k4aDy428uSOedqXDxys5mpoeQXwDsv1CoPTTwnmb1GWFy~oTGIsCguCl~aJWGnqiKarPO3GJQ~ev-NbvAQzUfC3HeP1e6pdI5CGGjExahTCID5UjpJw8GaDXWlGmYWWH303Xu4x-vAHQy1dJLsOBCn8dZravsn5BKJk~j0POUon45CCx-~NYtaPe0Itt9cMdD2ciC76Rep1D0X0sm1SjlSs8sZ52KmF3oaLZ6OzgI9QLMIyBUrfi41sK5I0qTuUVBAkvW1xr~L-20dYJ9TrbOaOb2-vDIfKaxVi6xQOuhgQDiSBhd3qv2m0xGu-BM9DQYfNA0FdMjnZmqjmji9RMavzQSsVFIbQGLbrLepiEFlb7TseCK5UtRp8TxnG7L4gbYevBQAEAAcAAA=="),
+            // dark_trion
+            new Destination("Gec9L29FVcQvYDgpcYuEYdltJn06PPoOWAcAM8Af-gDm~ehlrJcwlLXXs0hidq~yP2A0X7QcDi6i6shAfuEofTchxGJl8LRNqj9lio7WnB7cIixXWL~uCkD7Np5LMX0~akNX34oOb9RcBYVT2U5rFGJmJ7OtBv~IBkGeLhsMrqaCjahd0jdBO~QJ-t82ZKZhh044d24~JEfF9zSJxdBoCdAcXzryGNy7sYtFVDFsPKJudAxSW-UsSQiGw2~k-TxyF0r-iAt1IdzfNu8Lu0WPqLdhDYJWcPldx2PR5uJorI~zo~z3I5RX3NwzarlbD4nEP5s65ahPSfVCEkzmaJUBgP8DvBqlFaX89K4nGRYc7jkEjJ8cX4L6YPXUpTPWcfKkW259WdQY3YFh6x7rzijrGZewpczOLCrt-bZRYgDrUibmZxKZmNhy~lQu4gYVVjkz1i4tL~DWlhIc4y0x2vItwkYLArPPi~ejTnt-~Lhb7oPMXRcWa3UrwGKpFvGZY4NXBQAEAAcAAA==")
+        ]
 
-	static List<Destination> getCacheServers() {
-		List<Destination> allCaches = new ArrayList<>(CACHES)
-		Collections.shuffle(allCaches)
-		if (allCaches.size() <= TO_GIVE)
-			return allCaches
-		allCaches[0..TO_GIVE-1]
-	}
-	
-	static boolean isRegistered(Destination d) {
-		return CACHES.contains(d)
-	}
+    static List<Destination> getCacheServers() {
+        List<Destination> allCaches = new ArrayList<>(CACHES)
+        Collections.shuffle(allCaches)
+        if (allCaches.size() <= TO_GIVE)
+            return allCaches
+        allCaches[0..TO_GIVE-1]
+    }
+
+    static boolean isRegistered(Destination d) {
+        return CACHES.contains(d)
+    }
 }

core/src/main/groovy/com/muwire/core/hostcache/Host.groovy

@@ -4,34 +4,67 @@ import net.i2p.data.Destination
 
 class Host {
 
-	private static final int MAX_FAILURES = 3
-	
-	final Destination destination
-	int failures,successes
-	
-	public Host(Destination destination) {
-		this.destination = destination
-	}
+    private static final int MAX_FAILURES = 3
 
-	synchronized void onConnect() {
-		failures = 0
-		successes++
-	}
-	
-	synchronized void onFailure() {
-		failures++
-		successes = 0
-	}
-	
-	synchronized boolean isFailed() {
-		failures >= MAX_FAILURES
-	}
-	
-	synchronized boolean hasSucceeded() {
-		successes > 0
-	}
+    final Destination destination
+    private final int clearInterval, hopelessInterval, rejectionInterval
+    int failures,successes
+    long lastAttempt
+    long lastSuccessfulAttempt
+    long lastRejection
+
+    public Host(Destination destination, int clearInterval, int hopelessInterval, int rejectionInterval) {
+        this.destination = destination
+        this.clearInterval = clearInterval
+        this.hopelessInterval = hopelessInterval
+        this.rejectionInterval = rejectionInterval
+    }
     
+    private void connectSuccessful() {
+        failures = 0
+        successes++
+        lastAttempt = System.currentTimeMillis()
+    }
+
+    synchronized void onConnect() {
+        connectSuccessful()
+        lastSuccessfulAttempt = lastAttempt
+    }
+    
+    synchronized void onReject() {
+        connectSuccessful()
+        lastRejection = lastAttempt;
+    }
+
+    synchronized void onFailure() {
+        failures++
+        successes = 0
+        lastAttempt = System.currentTimeMillis()
+    }
+
+    synchronized boolean isFailed() {
+        failures >= MAX_FAILURES
+    }
+
+    synchronized boolean hasSucceeded() {
+        successes > 0
+    }
+
     synchronized void clearFailures() {
         failures = 0
     }
+
+    synchronized boolean canTryAgain() {
+        lastSuccessfulAttempt > 0 && 
+            System.currentTimeMillis() - lastAttempt > (clearInterval * 60 * 1000)
+    }
+    
+    synchronized boolean isHopeless() {
+        isFailed() && 
+            System.currentTimeMillis() - lastSuccessfulAttempt > (hopelessInterval * 60 * 1000)
+    }
+    
+    synchronized boolean isRecentlyRejected() {
+        System.currentTimeMillis() - lastRejection < (rejectionInterval * 60 * 1000)
+    }
 }

core/src/main/groovy/com/muwire/core/hostcache/HostCache.groovy

@@ -15,138 +15,167 @@ import net.i2p.data.Destination
 
 class HostCache extends Service {
 
-	final TrustService trustService
-	final File storage
-	final int interval
-	final Timer timer
-	final MuWireSettings settings
-	final Destination myself
-	final Map<Destination, Host> hosts = new ConcurrentHashMap<>()
-	
-	HostCache(){}
-	
-	public HostCache(TrustService trustService, File storage, int interval, 
-		MuWireSettings settings, Destination myself) {
-		this.trustService = trustService
-		this.storage = storage
-		this.interval = interval
-		this.settings = settings
-		this.myself = myself
-		this.timer = new Timer("host-persister",true)
-	}
+    final TrustService trustService
+    final File storage
+    final int interval
+    final Timer timer
+    final MuWireSettings settings
+    final Destination myself
+    final Map<Destination, Host> hosts = new ConcurrentHashMap<>()
 
-	void start() {
-		timer.schedule({load()} as TimerTask, 1)
-	}
-	
-	void stop() {
-		timer.cancel()
-	}
-	
-	void onHostDiscoveredEvent(HostDiscoveredEvent e) {
-		if (myself == e.destination)
-			return
-		if (hosts.containsKey(e.destination)) {
+    HostCache(){}
+
+    public HostCache(TrustService trustService, File storage, int interval,
+        MuWireSettings settings, Destination myself) {
+        this.trustService = trustService
+        this.storage = storage
+        this.interval = interval
+        this.settings = settings
+        this.myself = myself
+        this.timer = new Timer("host-persister",true)
+    }
+
+    void start() {
+        timer.schedule({load()} as TimerTask, 1)
+    }
+
+    void stop() {
+        timer.cancel()
+    }
+
+    void onHostDiscoveredEvent(HostDiscoveredEvent e) {
+        if (myself == e.destination)
+            return
+        if (hosts.containsKey(e.destination)) {
             if (!e.fromHostcache)
                 return
             hosts.get(e.destination).clearFailures()
             return
-		}
-		Host host = new Host(e.destination)
-		if (allowHost(host)) {
-			hosts.put(e.destination, host)
-		}
-	}
-	
-	void onConnectionEvent(ConnectionEvent e) {
-		if (e.leaf)
-			return
-		Destination dest = e.endpoint.destination
-		Host host = hosts.get(dest)
-		if (host == null) {
-			host = new Host(dest)
-			hosts.put(dest, host)
-		}
+        }
+        Host host = new Host(e.destination, settings.hostClearInterval, settings.hostHopelessInterval, settings.hostRejectInterval)
+        if (allowHost(host)) {
+            hosts.put(e.destination, host)
+        }
+    }
 
-		switch(e.status) {
-			case ConnectionAttemptStatus.SUCCESSFUL:
-			case ConnectionAttemptStatus.REJECTED:
-				host.onConnect()
-				break
-			case ConnectionAttemptStatus.FAILED:
-				host.onFailure()
-				break
-		}
-	}
-	
-	List<Destination> getHosts(int n) {
-		List<Destination> rv = new ArrayList<>(hosts.keySet())
-		rv.retainAll {allowHost(hosts[it])}
-		if (rv.size() <= n)
-			return rv
-		Collections.shuffle(rv)
-		rv[0..n-1]
-	}
-	
-	List<Destination> getGoodHosts(int n) {
-		List<Destination> rv = new ArrayList<>(hosts.keySet())
-		rv.retainAll {
-			Host host = hosts[it]
-			allowHost(host) && host.hasSucceeded()
-		}
-		if (rv.size() <= n)
-			return rv
-		Collections.shuffle(rv)
-		rv[0..n-1]
-	}
-	
-	void load() {
-		if (storage.exists()) {
-			JsonSlurper slurper = new JsonSlurper()
-			storage.eachLine {
-				def entry = slurper.parseText(it)
-				Destination dest = new Destination(entry.destination)
-				Host host = new Host(dest)
-				host.failures = Integer.valueOf(String.valueOf(entry.failures))
-				host.successes = Integer.valueOf(String.valueOf(entry.successes))
-				if (allowHost(host))
-					hosts.put(dest, host)
-			}
-		}
-		timer.schedule({save()} as TimerTask, interval, interval)
-		loaded = true
-	}
-	
-	private boolean allowHost(Host host) {
-		if (host.isFailed())
-			return false
-		if (host.destination == myself)
-			return false
-		TrustLevel trust = trustService.getLevel(host.destination)
-		switch(trust) {
-			case TrustLevel.DISTRUSTED :
-				return false
-			case TrustLevel.TRUSTED :
-				return true
-			case TrustLevel.NEUTRAL :
-				return settings.allowUntrusted()
-		}
-		false
-	}
-	
-	private void save() {
-		storage.delete()
-		storage.withPrintWriter { writer ->
-			hosts.each { dest, host ->
-				if (allowHost(host)) {
-					def map = [:]
-					map.destination = dest.toBase64()
-					map.failures = host.failures
-					map.successes = host.successes
-					def json = JsonOutput.toJson(map)
-					writer.println json
-				}
-			}
-		}
-	}
+    void onConnectionEvent(ConnectionEvent e) {
+        if (e.leaf)
+            return
+        Destination dest = e.endpoint.destination
+        Host host = hosts.get(dest)
+        if (host == null) {
+            host = new Host(dest, settings.hostClearInterval, settings.hostHopelessInterval, settings.hostRejectInterval)
+            hosts.put(dest, host)
+        }
+
+        switch(e.status) {
+            case ConnectionAttemptStatus.SUCCESSFUL:
+                host.onConnect()
+                break
+            case ConnectionAttemptStatus.REJECTED:
+                host.onReject()
+                break
+            case ConnectionAttemptStatus.FAILED:
+                host.onFailure()
+                break
+        }
+    }
+
+    List<Destination> getHosts(int n) {
+        List<Destination> rv = new ArrayList<>(hosts.keySet())
+        rv.retainAll {allowHost(hosts[it])}
+        rv.removeAll {
+            def h = hosts[it]; 
+            (h.isFailed() && !h.canTryAgain()) || h.isRecentlyRejected()
+        }
+        if (rv.size() <= n)
+            return rv
+        Collections.shuffle(rv)
+        rv[0..n-1]
+    }
+
+    List<Destination> getGoodHosts(int n) {
+        List<Destination> rv = new ArrayList<>(hosts.keySet())
+        rv.retainAll {
+            Host host = hosts[it]
+            allowHost(host) && host.hasSucceeded()
+        }
+        if (rv.size() <= n)
+            return rv
+        Collections.shuffle(rv)
+        rv[0..n-1]
+    }
+    
+    int countFailingHosts() {
+        List<Destination> rv = new ArrayList<>(hosts.keySet())
+        rv.retainAll { 
+            hosts[it].isFailed()
+        }
+        rv.size()
+    }
+    
+    int countHopelessHosts() {
+        List<Destination> rv = new ArrayList<>(hosts.keySet())
+        rv.retainAll {
+            hosts[it].isHopeless()
+        }
+        rv.size()
+    }
+
+    void load() {
+        if (storage.exists()) {
+            JsonSlurper slurper = new JsonSlurper()
+            storage.eachLine {
+                def entry = slurper.parseText(it)
+                Destination dest = new Destination(entry.destination)
+                Host host = new Host(dest, settings.hostClearInterval, settings.hostHopelessInterval, settings.hostRejectInterval)
+                host.failures = Integer.valueOf(String.valueOf(entry.failures))
+                host.successes = Integer.valueOf(String.valueOf(entry.successes))
+                if (entry.lastAttempt != null)
+                    host.lastAttempt = entry.lastAttempt
+                if (entry.lastSuccessfulAttempt != null)
+                    host.lastSuccessfulAttempt = entry.lastSuccessfulAttempt
+                if (entry.lastRejection != null)
+                    host.lastRejection = entry.lastRejection
+                if (allowHost(host)) 
+                    hosts.put(dest, host)
+            }
+        }
+        timer.schedule({save()} as TimerTask, interval, interval)
+        loaded = true
+    }
+
+    private boolean allowHost(Host host) {
+        if (host.destination == myself)
+            return false
+        TrustLevel trust = trustService.getLevel(host.destination)
+        switch(trust) {
+            case TrustLevel.DISTRUSTED :
+                return false
+            case TrustLevel.TRUSTED :
+                return true
+            case TrustLevel.NEUTRAL :
+                return settings.allowUntrusted()
+        }
+        false
+    }
+
+    private void save() {
+        storage.delete()
+        storage.withPrintWriter { writer ->
+            hosts.each { dest, host ->
+                if (allowHost(host) && !host.isHopeless()) {
+                    def map = [:]
+                    map.destination = dest.toBase64()
+                    map.failures = host.failures
+                    map.successes = host.successes
+                    map.lastAttempt = host.lastAttempt
+                    map.lastSuccessfulAttempt = host.lastSuccessfulAttempt
+                    map.lastRejection = host.lastRejection
+                    def json = JsonOutput.toJson(map)
+                    writer.println json
+                }
+            }
+        }
+    }
 }

core/src/main/groovy/com/muwire/core/hostcache/HostDiscoveredEvent.groovy

@@ -6,11 +6,11 @@ import net.i2p.data.Destination
 
 class HostDiscoveredEvent extends Event {
 
-	Destination destination
+    Destination destination
     boolean fromHostcache
-    
-	@Override
-	public String toString() {
-		"HostDiscoveredEvent ${super.toString()} destination:${destination.toBase32()} from hostcache $fromHostcache"
-	}
+
+    @Override
+    public String toString() {
+        "HostDiscoveredEvent ${super.toString()} destination:${destination.toBase32()} from hostcache $fromHostcache"
+    }
 }

core/src/main/groovy/com/muwire/core/mesh/Mesh.groovy

@@ -0,0 +1,28 @@
+package com.muwire.core.mesh
+
+import com.muwire.core.InfoHash
+import com.muwire.core.Persona
+import com.muwire.core.download.Pieces
+
+import net.i2p.data.Destination
+import net.i2p.util.ConcurrentHashSet
+
+class Mesh {
+    private final InfoHash infoHash
+    private final Set<Persona> sources = new ConcurrentHashSet<>()
+    private final Pieces pieces
+
+    Mesh(InfoHash infoHash, Pieces pieces) {
+        this.infoHash = infoHash
+        this.pieces = pieces
+    }
+
+    Set<Persona> getRandom(int n, Persona exclude) {
+        List<Persona> tmp = new ArrayList<>(sources)
+        tmp.remove(exclude)
+        Collections.shuffle(tmp)
+        if (tmp.size() < n)
+            return tmp
+        tmp[0..n-1]
+    }
+}

core/src/main/groovy/com/muwire/core/mesh/MeshManager.groovy

@@ -0,0 +1,117 @@
+package com.muwire.core.mesh
+
+import java.util.logging.Level
+import java.util.stream.Collectors
+
+import com.muwire.core.Constants
+import com.muwire.core.InfoHash
+import com.muwire.core.MuWireSettings
+import com.muwire.core.Persona
+import com.muwire.core.download.Pieces
+import com.muwire.core.download.SourceDiscoveredEvent
+import com.muwire.core.files.FileManager
+import com.muwire.core.util.DataUtil
+
+import groovy.json.JsonOutput
+import groovy.json.JsonSlurper
+import groovy.util.logging.Log
+import net.i2p.data.Base64
+
+@Log
+class MeshManager {
+
+    private final Map<InfoHash, Mesh> meshes = Collections.synchronizedMap(new HashMap<>())
+    private final FileManager fileManager
+    private final File home
+    private final MuWireSettings settings
+
+    MeshManager(FileManager fileManager, File home, MuWireSettings settings) {
+        this.fileManager = fileManager
+        this.home = home
+        this.settings = settings
+        load()
+    }
+
+    Mesh get(InfoHash infoHash) {
+        meshes.get(infoHash)
+    }
+
+    Mesh getOrCreate(InfoHash infoHash, int nPieces, boolean sequential) {
+        synchronized(meshes) {
+            if (meshes.containsKey(infoHash))
+                return meshes.get(infoHash)
+            float ratio = sequential ? 0f : settings.downloadSequentialRatio
+            Pieces pieces = new Pieces(nPieces, ratio)
+            if (fileManager.rootToFiles.containsKey(infoHash)) {
+                for (int i = 0; i < nPieces; i++)
+                    pieces.markDownloaded(i)
+            }
+            Mesh rv = new Mesh(infoHash, pieces)
+            meshes.put(infoHash, rv)
+            return rv
+        }
+    }
+
+    void onSourceDiscoveredEvent(SourceDiscoveredEvent e) {
+        Mesh mesh = meshes.get(e.infoHash)
+        if (mesh == null)
+            return
+       mesh.sources.add(e.source)
+       save()
+    }
+
+    private void save() {
+        File meshFile = new File(home, "mesh.json")
+        synchronized(meshes) {
+            meshFile.withPrintWriter { writer ->
+                meshes.values().each { mesh ->
+                    def json = [:]
+                    json.timestamp = System.currentTimeMillis()
+                    json.infoHash = Base64.encode(mesh.infoHash.getRoot())
+                    json.sources = mesh.sources.stream().map({it.toBase64()}).collect(Collectors.toList())
+                    json.nPieces = mesh.pieces.nPieces
+                    List<Integer> downloaded = mesh.pieces.getDownloaded()
+                    if( downloaded.size() > mesh.pieces.nPieces)
+                        return
+                    json.xHave = DataUtil.encodeXHave(downloaded, mesh.pieces.nPieces)
+                    writer.println(JsonOutput.toJson(json))
+                }
+            }
+        }
+    }
+
+    private void load() {
+        File meshFile = new File(home, "mesh.json")
+        if (!meshFile.exists())
+            return
+        long now = System.currentTimeMillis()
+        JsonSlurper slurper = new JsonSlurper()
+        meshFile.eachLine {
+            def json = slurper.parseText(it)
+            if (json.nPieces == null || json.nPieces == 0)
+                return // skip it, invalid
+                
+            if (now - json.timestamp > settings.meshExpiration * 60 * 1000)
+                return
+            InfoHash infoHash = new InfoHash(Base64.decode(json.infoHash))
+            Pieces pieces = new Pieces(json.nPieces, settings.downloadSequentialRatio)
+
+            Mesh mesh = new Mesh(infoHash, pieces)
+            json.sources.each { source ->
+                Persona persona = new Persona(new ByteArrayInputStream(Base64.decode(source)))
+                mesh.sources.add(persona)
+            }
+
+            if (json.xHave != null) {
+                try {
+                    DataUtil.decodeXHave(json.xHave).each { pieces.markDownloaded(it) }
+                } catch (IllegalArgumentException bad) {
+                    log.log(Level.WARNING, "couldn't parse XHave", bad)
+                }
+            }
+
+            if (!mesh.sources.isEmpty())
+                meshes.put(infoHash, mesh)
+        }
+    }
+}

core/src/main/groovy/com/muwire/core/search/BrowseManager.groovy

@@ -0,0 +1,87 @@
+package com.muwire.core.search
+
+import com.muwire.core.Constants
+import com.muwire.core.EventBus
+import com.muwire.core.connection.Endpoint
+import com.muwire.core.connection.I2PConnector
+import com.muwire.core.util.DataUtil
+
+import groovy.json.JsonSlurper
+import groovy.util.logging.Log
+
+import java.nio.charset.StandardCharsets
+import java.util.concurrent.Executor
+import java.util.concurrent.Executors
+import java.util.logging.Level
+import java.util.zip.GZIPInputStream
+
+@Log
+class BrowseManager {
+    
+    private final I2PConnector connector
+    private final EventBus eventBus
+    
+    private final Executor browserThread = Executors.newSingleThreadExecutor()
+    
+    BrowseManager(I2PConnector connector, EventBus eventBus) {
+        this.connector = connector
+        this.eventBus = eventBus
+    }
+    
+    void onUIBrowseEvent(UIBrowseEvent e) {
+        browserThread.execute({
+            Endpoint endpoint = null
+            try {
+                eventBus.publish(new BrowseStatusEvent(status : BrowseStatus.CONNECTING))
+                endpoint = connector.connect(e.host.destination)
+                OutputStream os = endpoint.getOutputStream()
+                os.write("BROWSE\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+             
+                InputStream is = endpoint.getInputStream()
+                String code = DataUtil.readTillRN(is)
+                if (!code.startsWith("200"))
+                    throw new IOException("Invalid code $code")
+                    
+                // parse all headers
+                Map<String,String> headers = new HashMap<>()
+                String header
+                while((header = DataUtil.readTillRN(is)) != "" && headers.size() < Constants.MAX_HEADERS) {
+                    int colon = header.indexOf(':')
+                    if (colon == -1 || colon == header.length() - 1)
+                        throw new IOException("invalid header $header")
+                    String key = header.substring(0, colon)
+                    String value = header.substring(colon + 1)
+                    headers[key] = value.trim()
+                }
+                
+                if (!headers.containsKey("Count"))
+                    throw new IOException("No count header")
+                
+                int results = Integer.parseInt(headers['Count'])
+                
+                // at this stage, start pulling the results
+                eventBus.publish(new BrowseStatusEvent(status : BrowseStatus.FETCHING, totalResults : results))
+                
+                JsonSlurper slurper = new JsonSlurper()
+                DataInputStream dis = new DataInputStream(new GZIPInputStream(is))
+                UUID uuid = UUID.randomUUID()
+                for (int i = 0; i < results; i++) {
+                    int size = dis.readUnsignedShort()
+                    byte [] tmp = new byte[size]
+                    dis.readFully(tmp)
+                    def json = slurper.parse(tmp)
+                    UIResultEvent result = ResultsParser.parse(e.host, uuid, json)
+                    eventBus.publish(result)
+                }
+                
+                eventBus.publish(new BrowseStatusEvent(status : BrowseStatus.FINISHED))
+                
+            } catch (Exception bad) {
+                log.log(Level.WARNING, "browse failed", bad)
+                eventBus.publish(new BrowseStatusEvent(status : BrowseStatus.FAILED))
+            } finally {
+                endpoint?.close()
+            }
+        } as Runnable)
+    }
+}

core/src/main/groovy/com/muwire/core/search/BrowseStatus.java

@@ -0,0 +1,5 @@
+package com.muwire.core.search;
+
+public enum BrowseStatus {
+    CONNECTING, FETCHING, FINISHED, FAILED
+}