[New-bugs-announce] [issue36522] http/client.py does not print duplicate header values in debug

[Matt Houglum]

New submission from Matt Houglum <houglum at google.com>:

This is a follow-up to https://bugs.python.org/issue33365.  The fix for that issue (see https://github.com/python/cpython/pull/6611) added a statement to also print header values, but it does not account for the case where multiple values exist for the same header name, e.g. if my response contained these headers:

x-goog-hash: crc32c=KAwGng==
x-goog-hash: md5=eB5eJF1ptWaXm4bijSPyxw==

then the debug output would print whichever of those values is returned from `self.headers.get("x-goog-hash")` for both prints:

header: x-goog-hash: crc32c=KAwGng==
header: x-goog-hash: crc32c=KAwGng==

The iteration should instead be done using self.headers.items(), which will return the key and value pair to be printed. I'll send a GitHub PR shortly.

----------
components: Library (Lib)
messages: 339424
nosy: Matt Houglum
priority: normal
severity: normal
status: open
title: http/client.py does not print duplicate header values in debug
versions: Python 3.6, Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36522>
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