tree 38f8157090ddf4f06cd1240f98c8f861557b2c95
parent 06a226fb4e3765ef3f48aa2852b401bc7b98e981
author Erick Tryzelaar <etryzelaar@google.com> 1591120491 +0000
committer Filippo Valsorda <filippo@golang.org> 1591120936 +0000

ssh: don't err out on channel request msgs to unknown channels

rfc4254 section 5.4 states that channel request messages sent to an
unrecognized channel should be replied with a `SSH_MSG_CHANNEL_FAILURE`,
rather than erring out and closing the mux. This can occur with servers
like openssh-portable, which can begin to close a channel and also use
that channel for keepalives before it has received a closed response
from the client.

Fixes golang/go#38908

Change-Id: Id68b77e16b2889d3a21d505ed8018f9f457e067a
GitHub-Last-Rev: 8a92f87dc30697d9e3805af695efdf1b1dc8409b
GitHub-Pull-Request: golang/crypto#136
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/232659
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>