https://github.com/python/cpython/commit/b071a5e838a0e84c4e8a60448fbd40e8a7e5c882 commit: b071a5e838a0e84c4e8a60448fbd40e8a7e5c882 branch: 3.6 author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com> committer: Vinay Sajip <vinay_sajip at yahoo.co.uk> date: 2017年11月19日T19:16:17Z summary: bpo-30904: Removed duplicated Host: header. (GH-4465) (#4468) (cherry picked from commit e96ba183c43ad6633b5d014b3dc57433e2802faf) files: M Lib/logging/handlers.py diff --git a/Lib/logging/handlers.py b/Lib/logging/handlers.py index daa71abd785..11ebcf124c3 100644 --- a/Lib/logging/handlers.py +++ b/Lib/logging/handlers.py @@ -1183,7 +1183,9 @@ def emit(self, record): i = host.find(":") if i >= 0: host = host[:i] - h.putheader("Host", host) + # See issue #30904: putrequest call above already adds this header + # on Python 3.x. + # h.putheader("Host", host) if self.method == "POST": h.putheader("Content-type", "application/x-www-form-urlencoded")