On socket end don't emit an additional event

lib/protocol/Connection.js

@@ -241,7 +241,7 @@ Connection.prototype._addListeners = function _addListeners(socket) {
   function onend() {
     var err = new Error('Connection closed by server');
     err.code = 'EHDBCLOSE';
-    socket.emit('error', err);
+    onerror(err);
   }
   socket.on('end', onend);
 };