karl added the comment:
The wireshark trace is a different domain than the code example. But let's see.
cocobear added:
headers = [("Content-Type","application/oct-stream"),]
with a "Content-Type", not the capitalized "Type".
BUT in the source code or urllib/request.py there is
http://hg.python.org/cpython/file/3.3/Lib/urllib/request.py#l1184
if not request.has_header('Content-type')
And if you check has_header at
http://hg.python.org/cpython/file/3.3/Lib/urllib/request.py#l367
it compares exactly the string it has received, when HTTP headers are case
insensitive. It reminds me of
http://bugs.python.org/issue12455
http://bugs.python.org/issue17322
with capitalization issues.
I'm changing the title to be more exact.
----------
nosy: +karlcow
title: urllib2 use of opener.addheaders -> [urllib.request]: Comparison of HTTP
headers should be insensitive to the case
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