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Bug#523250: openssh-client: doesn't remove sockets from dead ssh clients

Package: openssh-client
Version: 1:5.1p1-5
Severity: normal

ssh doesn't remove sockets from dead ssh clients. When it gets a
connection refused message on a socket it should presume that ssh
process is dead, delete the socket and create a new one. This would
remove the need to manually clean up after a Linux crash or similar.

pabs@chianamo:~$ xterm -e ssh people.debian.org & sleep 10s ; killall -9 ssh ; ssh people.debian.org
[1] 8225
[1]+  Done                    xterm -e ssh people.debian.org
Control socket connect(/home/pabs/.ssh/control/chianamo->pabs@people.debian.org:22): Connection refused
Host key fingerprint is ac:b4:ac:8a:b5:a3:0a:72:76:a8:16:96:a2:c7:86:ba
+--[ RSA 2048]----+
|                 |
|                 |
|                 |
|       .         |
|  .   . S        |
|.+ . o o         |
|*o* . +          |
|=B=o .           |
|E=oo.            |

ControlSocket /home/pabs/.ssh/control/chianamo->pabs@people.debian.org:22 already exists, disabling multiplexing
Linux ravel xxxxxxxxxxxxxxxxxxx Sun Apr 5 00:16:11 CEST 2009 x86_64

This is ravel.debian.org, aka people.debian.org.

Last login: Thu Apr  9 02:30:24 2009 from xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
pabs@ravel:~$ logout
Connection to people.debian.org closed.
pabs@chianamo:~$ ls -l '/home/pabs/.ssh/control/chianamo->pabs@people.debian.org:22'
srw------- 1 pabs pabs 0 2009-04-09 10:30 /home/pabs/.ssh/control/chianamo->pabs@people.debian.org:22=

-- System Information:
Debian Release: 5.0
  APT prefers stable
  APT policy: (800, 'stable'), (700, 'testing'), (600, 'unstable'), (550, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages openssh-client depends on:
ii  adduser               3.110              add and remove users and groups
ii  debconf [debconf-2.0] 1.5.24             Debian configuration management sy
ii  dpkg                  1.14.25            Debian package management system
ii  libc6                 2.7-18             GNU C Library: Shared libraries
ii  libcomerr2            1.41.3-1           common error description library
ii  libedit2              2.11~20080614-1    BSD editline and history libraries
ii  libkrb53              1.6.dfsg.4~beta1-5 MIT Kerberos runtime libraries
ii  libncurses5           5.7+20081213-1     shared libraries for terminal hand
ii  libssl0.9.8           0.9.8g-15+lenny1   SSL shared libraries
ii  passwd                1:4.1.1-6          change and administer password and
ii  zlib1g                1:  compression library - runtime

Versions of packages openssh-client recommends:
ii  openssh-blacklist             0.4.1      list of default blacklisted OpenSS
ii  openssh-blacklist-extra       0.4.1      list of non-default blacklisted Op
ii  xauth                         1:1.0.3-2  X authentication utility

Versions of packages openssh-client suggests:
pn  keychain                      <none>     (no description available)
pn  libpam-ssh                    <none>     (no description available)
pn  ssh-askpass                   <none>     (no description available)



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