paramiko SSHClient.connect not thread safe

Bug #725237 reported by Matthew Newcomb on 2011-02-25
This bug affects 1 person
Affects Status Importance Assigned to Milestone
paramiko (Ubuntu)

Bug Description

Ubuntu 10.04, python 2.6.5

I call connect to several hosts. Each connect from it's own thread. On one of those hosts I don't have permission to log in anymore. The results are nondeterministic. Sometimes I get what I expect, an authentication failed problem. Other times I get a socket error: [Errno -2] Name or service not known. Run the script 5 times, you get 5 different answers. If you put a lock around the call to connect I get the same authentication failed exception ten times out of ten.

The source for the script is available here:

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