commit dd755cdc56cf85f8c86ea203e0cd0e7c59cfd86a Author: teor teor2345@gmail.com Date: Wed Sep 20 09:28:53 2017 +1000

VERSIONS cells sent after the initial VERSIONS cell are dropped

Resolves 22931. --- tor-spec.txt | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/tor-spec.txt b/tor-spec.txt index aab417b..291c964 100644 --- a/tor-spec.txt +++ b/tor-spec.txt @@ -556,6 +556,10 @@ see tor-design.pdf. close the connection if the versions cell is not well-formed (for example, if it contains an odd number of bytes).

+ Any VERSIONS cells sent after the first VERSIONS cell MUST be ignored. + (To be interpreted correctly, later VERSIONS cells MUST have a CIRCID_LEN + matching the version negotiated with the first VERSIONS cell.) + Since the version 1 link protocol does not use the "renegotiation" handshake, implementations MUST NOT list version 1 in their VERSIONS cell. When the "renegotiation" handshake is used, implementations