diff -r 5a53af7d09aa -r 5767664d39a5 tests/sshprotoext.py
--- a/tests/sshprotoext.py	Sat Dec 23 15:13:37 2017 +0530
+++ b/tests/sshprotoext.py	Wed Feb 07 21:04:54 2018 -0800
@@ -45,11 +45,11 @@
         l = self._fin.readline()
         assert l == b'hello\n'
         # Respond to unknown commands with an empty reply.
-        self._sendresponse(b'')
+        wireprotoserver._sshv1respondbytes(self._fout, b'')
         l = self._fin.readline()
         assert l == b'between\n'
         rsp = wireproto.dispatch(self._repo, self, b'between')
-        self._handlers[rsp.__class__](self, rsp)
+        wireprotoserver._sshv1respondbytes(self._fout, rsp)
 
         super(prehelloserver, self).serve_forever()