[PATCH 4 of 4] sshpeer: also use doublepipe for client to server communication

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at fb.com>
# Date 1432140959 18000
#      Wed May 20 11:55:59 2015 -0500
# Node ID d1daa0101d67bdfa01ff6c49b1d88ccfaf976c74
# Parent  326294c728893275d7f40e3179f45ac0c1a888df
sshpeer: also use doublepipe for client to server communication

This will allow even more real time output when the server issue output in the
middle a stream push.

diff --git a/mercurial/sshpeer.py b/mercurial/sshpeer.py
--- a/mercurial/sshpeer.py
+++ b/mercurial/sshpeer.py
@@ -166,10 +166,11 @@ class sshpeer(wireproto.wirepeer):
         sub = util.popen4(cmd, bufsize=0)
         self.pipeo, self.pipei, self.pipee, self.subprocess = sub
 
         self.pipei = util.bufferedinputpipe(self.pipei)
         self.pipei = doublepipe(self.ui, self.pipei, self.pipee)
+        self.pipeo = doublepipe(self.ui, self.pipeo, self.pipee)
 
         # skip any noise generated by remote shell
         self._callstream("hello")
         r = self._callstream("between", pairs=("%s-%s" % ("0"*40, "0"*40)))
         lines = ["", "dummy"]