Author juliadolgova
Recipients eryksun, juliadolgova, orsenthil, paul.moore, steve.dower, tim.golden, zach.ware
Date 2017-02-19.07:52:52
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I compared the behavior of IE and urllib.
I put different addresses to the <proxy bypass list> ("Do not use proxy server for address beginning with" setting), made different requests through IE and urllib and watched if the proxy was bypassed.

IE doesn't even make a forward dns lookup for the hosname given to check whether it should bypass proxy, whereas urllib does.

For example:
proxy_bypass_list       request                          IE bypasses proxy   urllib bypasses proxy               no                  yes         no                  yes              no                  yes

compare_ie_urllib.txt - full report
Date User Action Args
2017-02-19 07:52:52juliadolgovasetrecipients: + juliadolgova, paul.moore, orsenthil, tim.golden, zach.ware, eryksun, steve.dower
2017-02-19 07:52:52juliadolgovasetmessageid: <>
2017-02-19 07:52:52juliadolgovalinkissue29533 messages
2017-02-19 07:52:52juliadolgovacreate