Merge pull request #304 from hurtonm/flush_identity_message_for_inproc_transport

Flush identity message for inproc transport

src/socket_base.cpp

@@ -434,6 +434,7 @@ int zmq::socket_base_t::connect (const char *addr_)
             id.set_flags (msg_t::identity);
             bool written = pipes [0]->write (&id);
             zmq_assert (written);
+            pipes [0]->flush ();
         }
 
         //  Attach remote end of the pipe to the peer socket. Note that peer's