| 2020-04-26 06:09:20 |
Alkis Georgopoulos |
description |
Hi, I reported a socat regression that only appears in version 1.7.3.3:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958452
The Debian maintainer just packaged the new version 1.7.3.4 which solves the issue.
Is it possible to get that in Focal? It could be considered a microrelease:
https://wiki.ubuntu.com/StableReleaseUpdates#New_upstream_microreleases
Here are the regression details, in order to be able to reproduce it:
Epoptes is a computer lab management tool, I'm upstream and
Debian maintainer for it. It uses socat to forward a "student" terminal
to the "teacher". To reproduce the issue without installing Epoptes, the
following similar commands may be used instead:
Teacher (just run it in a terminal tab):
xterm -e socat tcp-listen:1234,reuseaddr,keepalive=1 stdio,raw,echo=0
Student (just run it in another terminal tab):
TERM=xterm socat EXEC:'screen bash -l',pty,stderr tcp:localhost:1234
This works fine with all socat versions except 1.7.3.3.
In 1.7.3.3, it's like line buffering is enabled or something similar,
and pressing for example the up arrow in the keyboard shows "^[OA"
instead of displaying the last bash command. Thus, the forwarded xterm
is almost unusable. |
[Impact]
The socat version in Focal, 1.7.3.3, has a regression that breaks the "remote terminal" functionality of the "epoptes" package.
I reported it to Debian, and the Debian maintainer packaged the new socat 1.7.3.4 which solves the issue:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958452
This new upstream version is a bug fixing release which I believe can be considered a microrelease:
https://wiki.ubuntu.com/StableReleaseUpdates#New_upstream_microreleases
Please sync it to focal-proposed.
[Test case]
Here are the regression details, in order to be able to reproduce it:
Epoptes is a computer lab management tool, I'm upstream and Debian maintainer for it. Among other things, it uses socat to forward a "student" terminal to the "teacher". To reproduce the issue without installing Epoptes, the following similar commands may be used instead:
Teacher (just run it in a terminal tab):
xterm -e socat tcp-listen:1234,reuseaddr,keepalive=1 stdio,raw,echo=0
Student (just run it in another terminal tab):
TERM=xterm socat EXEC:'screen bash -l',pty,stderr tcp:localhost:1234
This works fine with all socat versions except 1.7.3.3.
In 1.7.3.3, it's like line buffering is enabled or something similar, and pressing for example the up arrow in the keyboard shows "^[OA" instead of displaying the last bash command. Thus, the forwarded xterm is almost unusable.
[Regression potential]
Low. It's a bug fixing upstream release.
I have compiled 1.7.3.4 from source and I've been using it for about a month with no visible issues. I also installed the .deb from sid to my focal box today and it appears to work fine.
Note though that https://tracker.debian.org/pkg/socat shows a unit test failure on arm64 (networkd-test.py), I don't know if that was the case with previous versions or not. |
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