[issue19870] Backport Cookie fix to 2.7 (httponly / secure flag)

[INADA Naoki]

INADA Naoki added the comment:

Could someone review this?
While this is not a regression or bug, I think this is an important
feature when writing HTTP clients.

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nosy: +naoki

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19870>
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