[New-bugs-announce] [issue29142] urllib: no_proxy variable values with leading dot not properly handled

[Thomas Loetzer]

New submission from Thomas Loetzer:

Hi,

the fix for issue 26864 changed the behavior of urllib for no_proxy values with a leading dot to no longer match anything. This seems to be caused by always adding an additional dot between the hostname being checked and the entry.

Example:
no_proxy = '.company.internal'

I would expect 'somehost.company.internal' to be accessed without proxy, but this is not actually the case. Changing no_proxy to company.internal changes this and the host is accessed without proxy.

Python 2.7.11 and curl both handle this case fine and the proxy is not used.

Regards,
Thomas

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components: Library (Lib)
messages: 284565
nosy: tloetzer
priority: normal
severity: normal
status: open
title: urllib: no_proxy variable values with leading dot not properly handled
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29142>
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