changeset:   103502:00da8bfa2a60
branch:      3.5
parent:      103500:16d652760a06
user:        Raymond Hettinger <python@rcn.com>
date:        Fri Sep 09 16:43:48 2016 -0700
files:       Lib/urllib/request.py Misc/NEWS
description:
Issue #22450: Use "Accept: */*" in the default headers for urllib.request


diff -r 16d652760a06 -r 00da8bfa2a60 Lib/urllib/request.py
--- a/Lib/urllib/request.py	Fri Sep 09 16:37:53 2016 -0700
+++ b/Lib/urllib/request.py	Fri Sep 09 16:43:48 2016 -0700
@@ -1625,7 +1625,7 @@
         self.proxies = proxies
         self.key_file = x509.get('key_file')
         self.cert_file = x509.get('cert_file')
-        self.addheaders = [('User-Agent', self.version)]
+        self.addheaders = [('User-Agent', self.version), ('Accept', '*/*')]
         self.__tempfiles = []
         self.__unlink = os.unlink # See cleanup()
         self.tempcache = None
diff -r 16d652760a06 -r 00da8bfa2a60 Misc/NEWS
--- a/Misc/NEWS	Fri Sep 09 16:37:53 2016 -0700
+++ b/Misc/NEWS	Fri Sep 09 16:43:48 2016 -0700
@@ -70,6 +70,10 @@
 - Issue #27445: Don't pass str(_charset) to MIMEText.set_payload().
   Patch by Claude Paroz.
 
+- Issue #22450: urllib now includes an "Accept: */*" header among the
+  default headers.  This makes the results of REST API requests more
+  consistent and predictable especially when proxy servers are involved.
+
 - lib2to3.pgen3.driver.load_grammar() now creates a stable cache file
   between runs given the same Grammar.txt input regardless of the hash
   randomization setting.