Added check for getpeername since it doesn't exist on esp usocket

@@ -159,6 +159,9 @@ class MudServer(object):
         self._new_events = []
 
     def get_remote_ip(self, clid):
+        if 'esp' in sys.platform:
+            return 'Unknown IP'
+        else:
             cl = self._clients[clid]
             return cl.socket.getpeername()