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[utils] Prevent override of custom headers.

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The dict of headers of request objects in urllib has its keys always
capitalized.

This causes the lookup to fail and overwrite the header. If for example
a Extractor tries to add a "User-Agent" header the internal
representation in the request object is "User-agent". The header is
therefore clobbered by the "User-Agent" in std_headers, because the
strings are not equal.
This commit is contained in:
Johannes Knoedtel 2015-01-12 22:26:20 +01:00
parent a5fb718c50
commit 3d5f7a3947
1 changed files with 3 additions and 1 deletions
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4
youtube_dl/utils.py
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@ -611,7 +611,9 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
def http_request(self, req):
for h, v in std_headers.items():
if h not in req.headers:
# Capitalize is needed because of Python bug 2275: http://bugs.python.org/issue2275
# The dict keys are capitalized because of this bug by urllib
if h.capitalize() not in req.headers:
req.add_header(h, v)
if 'Youtubedl-no-compression' in req.headers:
if 'Accept-encoding' in req.headers: