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author | Nick Mathewson <nickm@torproject.org> | 2024-02-14 08:55:29 -0500 |
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committer | Nick Mathewson <nickm@torproject.org> | 2024-02-14 08:55:29 -0500 |
commit | fcdbdf63776db815099052be3c4a842e0223b0b5 (patch) | |
tree | a51951325f82bd587fa51061f210362fef865c33 /spec/rend-spec | |
parent | 664b6626bac8fb356d7f9f075874c5f806c0bbb5 (diff) | |
download | torspec-fcdbdf63776db815099052be3c4a842e0223b0b5.tar.gz torspec-fcdbdf63776db815099052be3c4a842e0223b0b5.zip |
Clarify rend-point behavior with relay cells
Previously, we didn't actually say that relay cells got
retransmitted; we only said that the circuits were "joined".
Closes #254 by clarifying that RELAY_EARLY cells are retransmitted
as RELAY cells.
Diffstat (limited to 'spec/rend-spec')
-rw-r--r-- | spec/rend-spec/protocol-overview.md | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/spec/rend-spec/protocol-overview.md b/spec/rend-spec/protocol-overview.md index a50b3d1..9f7c96f 100644 --- a/spec/rend-spec/protocol-overview.md +++ b/spec/rend-spec/protocol-overview.md @@ -40,9 +40,16 @@ circuits, and the cryptographic handshake gives the two parties a shared key and proves to the client that it is indeed talking to the hidden service. -Once the two circuits are joined, the client can use Tor RELAY cells -to deliver relay messages -to the server. RELAY_BEGIN messages open streams to an external process +Once the two circuits are joined, the client can use Tor relay cells +to deliver relay messages to the server: +Whenever the rendezvous point receives as relay cell from one of +the circuits, it transmits it to the other. +(It accepts both RELAY and RELAY_EARLY cells, +and retransmits them all as RELAY cells.) + +The two parties use these relay messages to implement Tor's +usual application stream protocol: +RELAY_BEGIN messages open streams to an external process or processes configured by the server; RELAY_DATA messages are used to communicate data on those streams, and so forth. |