SSU2: Fix bitfield shifts of 256 or more

history.txt

@@ -1,3 +1,19 @@
+2022-07-25 zzz
+ * SSU2: Fix bitfield shifts of 256 or more
+
+2022-07-21 zzz
+ * Console: Fix saving flat clients.config file
+
+2022-07-19 zzz
+ * GeoIP: Don't lookup route48 addresses
+ * SSU:
+   - Reduce max establishment time
+   - Retransmit handshake messages faster and expire faster (SSU 1/2)
+ * SSU2:
+    - Shorten token expiration based on cache size
+    - Retransmit session confirmed after receiving apparent retransmitted session created
+    - Fix storage/checking of local firewalled IP address/port in token file
+
 2022-07-17 zzz
  * SSU2:
    - More MTU fixes

router/java/src/net/i2p/router/RouterVersion.java

@@ -18,7 +18,7 @@ public class RouterVersion {
     /** deprecated */
     public final static String ID = "Git";
     public final static String VERSION = CoreVersion.VERSION;
-    public final static long BUILD = 12;
+    public final static long BUILD = 13;
 
     /** for example "-test" */
     public final static String EXTRA = "";

router/java/src/net/i2p/router/transport/udp/SSU2Bitfield.java

@@ -80,7 +80,7 @@ class SSU2Bitfield {
                     shift = min_shift;
                 // round up
                 if ((shift & 0x3f) != 0)
-                    shift = 64 + (shift & 0xc0);
+                    shift = 64 + (shift & 0x7fffffc0);
                 //System.out.println("Shifting bitfield, offset was " + offset + ", now " + (offset + shift));
                 if (shift < size) {
                     // shift down