diff -r dd0bdeb0feee -r 2806c7bbcb5e mercurial/keepalive.py
--- a/mercurial/keepalive.py	Mon May 22 22:32:59 2017 -0400
+++ b/mercurial/keepalive.py	Thu Jun 01 18:23:20 2017 -0700
@@ -353,7 +353,8 @@
 
 
     def __init__(self, sock, debuglevel=0, strict=0, method=None):
-        httplib.HTTPResponse.__init__(self, sock, debuglevel, method)
+        httplib.HTTPResponse.__init__(self, sock, debuglevel=debuglevel,
+                                      strict=True, method=method)
         self.fileno = sock.fileno
         self.code = None
         self._rbuf = ''