[misc] add to and from attribut on the zeroconf stream opening. see #3057

src/common/zeroconf/client_zeroconf.py

@@ -181,6 +181,8 @@ class P2PClient(IdleObject):
 		# XXX TLS support
 		#~ self._metastream.setAttr('version', '1.0')
 		self.Dispatcher._metastream.setAttr('xmlns:stream', NS_STREAMS)
+		self.Dispatcher._metastream.setAttr('from', self.conn_holder.zeroconf.name)
+		self.Dispatcher._metastream.setAttr('to', self.to)
 		self.Dispatcher.send("<?xml version='1.0'?>%s>" % str(self.Dispatcher._metastream)[:-2])
 	
 	def _check_stream_start(self, ns, tag, attrs):