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authorNick Mathewson <nickm@torproject.org>2008-12-29 19:55:23 +0000
committerNick Mathewson <nickm@torproject.org>2008-12-29 19:55:23 +0000
commitd5f37a82e78716c24bf46be8261a63eece58d44e (patch)
treebcaf749229014f458258cffc6e7116480c692aee /proposals/110-avoid-infinite-circuits.txt
parentc9196de6e295ec59efe4caccedb42d64418d319e (diff)
downloadtorspec-d5f37a82e78716c24bf46be8261a63eece58d44e.tar.gz
torspec-d5f37a82e78716c24bf46be8261a63eece58d44e.zip
Document RELAY_EARLY cells in tor-spec.txt: proposal 110 is mostly implemented, and the rest of it will need to wait until all current Tor 0.2.0.x clients are obsolete to close.
svn:r17816
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diff --git a/proposals/110-avoid-infinite-circuits.txt b/proposals/110-avoid-infinite-circuits.txt
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+++ b/proposals/110-avoid-infinite-circuits.txt
@@ -57,6 +57,12 @@ Design:
data cells over the stream as relay_early cells, regardless of their
actual type.
+ (Note that a circuit that is out of relay_early cells MUST NOT be
+ cannibalized later, since it can't extend. Note also that it's always okay
+ to use regular RELAY cells when sending non-EXTEND commands targetted at
+ the first hop of a circuit, since there is no intermediate hop to try to
+ learn the relay command type.)
+
Each intermediate server would pass on the same type of cell that it
received (either relay or relay_early), and the cell's destination
will be able to learn whether it's allowed to contain an Extend request.