Martin Panter added the comment: Just noticed the whitespace scenario is mentioned at <https://tools.ietf.org/html/rfc7230#section-3.2.4>:
''' No whitespace is allowed between the header field-name and colon. In the past, differences in the handling of such whitespace have led to security vulnerabilities in . . . response handling. . . . A proxy must remove any such whitespace from a response message before forwarding the message downstream. ''' It would not be possible build a proxy that does that using Python 3’s current HTTP client. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25539> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com