[issue8498] Cannot use backlog = 0 for sockets

[Jean-Paul Calderone]

Jean-Paul Calderone <exarkun at twistedmatrix.com> added the comment:

It'd be nice to have a unit test that passes a small enough value to listen() to trigger the check.  Since there's no way to reliably determine what the system backlog really is, there's probably no reason to actually try to determine that the "right" value was passed to listen.  Just making sure the code actually goes through the success-case when this check is hit is probably enough.

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<http://bugs.python.org/issue8498>
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