Add server support for signal channel (RFC 4254, 6.9)

Jay Weisskopf jay at
Thu Mar 15 02:24:06 AEDT 2018

Is there an OpenSSH project maintainer that can speak authoritatively on
this issue? What will it take to add support for section 6.9 of the RFC
(beyond the patch[es] in issue 1424)? Is there a flaw with this part of the
RFC that makes implementation problematic?


On Thu, Feb 15, 2018 at 2:07 PM Jay Weisskopf <jay at> wrote:

> I would like to see sshd support the signal channel. Issue 1424 [1] has
> been tracking this for 10 years, but it's not very clear to me why it never
> progressed. Discussion in that issue centers around the ergonomics of
> adding support to the client. I am more interested in seeing this work with
> other clients that already implement the feature (e.g. Go's SSH package
> [2]).
> I attached a smaller patch that only makes changes to the server. It is a
> subset of the existing attached patch.
> Thanks,
> Jay
> [1]:
> [2]:

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