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Update SSU docs for IPv6 introductions, close prop. 158

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zzz
2021-04-26 10:31:59 -04:00
parent 10f8129d13
commit a239e7ccd5
3 changed files with 27 additions and 12 deletions
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i2p2www/spec/ssu.rst
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@@ -4,7 +4,7 @@ SSU Protocol Specification
.. meta::
:category: Transports
:lastupdated: 2021-04
:accuratefor: 0.9.48
:accuratefor: 0.9.50
.. contents::
@@ -667,8 +667,10 @@ Notes
always 0 and the port is always 0, and the receiver should use the packet's
source address and port.
* This message may be sent via IPv4 or IPv6. If IPv6, Alice must include her
IPv4 address and port.
* This message may be sent via IPv4 or IPv6.
If the message is over IPv6 for an IPv4 introduction,
or (as of release 0.9.50) over IPv4 for an IPv6 introduction,
Alice must include her introduction address and port.
* If Alice includes her address/port, Bob may perform additional validation
before continuing.
@@ -678,7 +680,7 @@ Notes
* Challenge is unimplemented, challenge size is always zero
* There are no plans to implement relaying for IPv6.
* Relaying for IPv6 is supported as of release 0.9.50.
* Prior to release 0.9.12, Bob's intro key was always used. As of release
0.9.12, the session key is used if there is an established session between
@@ -738,10 +740,11 @@ Notes
RelayRequest on (not necessarily the IP Alice included in the RelayRequest),
and may be IPv4 or IPv6. Alice currently ignores these on receive.
* Charlie's IP address must be IPv4, as that is the address that Alice will
* Charlie's IP address may be IPv4, or, as of release 0.9.50, IPv6.
as that is the address that Alice will
send the SessionRequest to after the Hole Punch.
* There are no plans to implement relaying for IPv6.
* Relaying for IPv6 is supported as of release 0.9.50.
* Prior to release 0.9.12, Alice's intro key was always used. As of release
0.9.12, the session key is used if there is an established session between
@@ -789,12 +792,17 @@ non-mod-16 padding)
Notes
`````
* Alice's IP address is always 4 bytes in the current implementation, because
Alice is trying to connect to Charlie via IPv4.
* For IPv4, Alice's IP address is always 4 bytes, because Alice is trying to connect to Charlie via IPv4.
As of release 0.9.xx, IPv6 is supported, and Alice's IP address may be 16 bytes.
* This message must be sent via an established IPv4 connection, as that's the
only way that Bob knows Charlie's IPv4 address to return to Alice in the
RelayResponse_.
* For IPv4, this message must be sent via an established IPv4 connection,
as that's the only way that Bob knows Charlie's IPv4 address to return to Alice in the RelayResponse_.
As of release 0.9.50, IPv6 is supported, and this message may be sent via an established IPv6 connection.
* As of release 0.9.50, any SSU address published with introducers must contain "4" or "6" in the "caps" option.
* Challenge is unimplemented, challenge size is always zero