[ python-Bugs-1170065 ] HTTPResponse.getheaders() returns lowercased header names

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Bugs item #1170065, was opened at 2005-03-24 20:24
Message generated for change (Comment added) made by tzot
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 1
Submitted By: Alexey Dvoychenkov (yain)
Assigned to: Nobody/Anonymous (nobody)
Summary: HTTPResponse.getheaders() returns lowercased header names

Initial Comment:
I'm not sure, if this is a bug, or intentional
behaviour, because on one hand RFC states that field
names for HTTP headers are case-insensitive, on the
other hand, it's not what server really returns to client.

Example:

print response.getheaders()

Yields this (output formatted a bit for clarity):

[('content-length', '5998'), 
('accept-ranges', 'bytes'), 
('last-modified', 'Sun, 30 Jan 2005 14:36:09 GMT'), 
('connection', 'close'), 
('etag', '"26d79-176e-41fcf0d9"'), 
('date', 'Thu, 24 Mar 2005 18:14:07 GMT'), 
('content-type', 'text/html')]



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Comment By: Christos Georgiou (tzot)
Date: 2006-03-31 19:48

Message:
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user_id=539787

I believe that since HTTP Headers are not case sensitive,
this is not a bug.
Fixing the case to either lower-case or upper-case is
typical wherever data are case insensitive, and since Python
strings are case sensitive (in this case, the header name is
being used as a key to a dict), rfc822.py selects lower-case
('suitably canonicalized') to implement case insensitivity.

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