mercurial/httppeer.py

--- a/mercurial/httppeer.py	Sat Feb 27 21:17:37 2016 +0900
+++ b/mercurial/httppeer.py	Fri Mar 11 11:24:50 2016 -0500
@@ -112,7 +112,7 @@
         if len(args) > 0:
             httpheader = self.capable('httpheader')
             if httpheader:
-                headersize = int(httpheader.split(',')[0])
+                headersize = int(httpheader.split(',', 1)[0])
         if headersize > 0:
             # The headers can typically carry more data than the URL.
             encargs = urllib.urlencode(sorted(args.items()))