相关疑难解决方法(0)

我正在玩node.js和socket.io-client.我试图连接到一个不存在的通道,以便触发事件'connect_failed'(在https://github.com/LearnBoost/socket.io-client中指定).

但是,我不能让活动工作:

var clientio = require('socket.io-client');
console.log('Trying stuff ...');

// the channel does not exist
var socket = clientio.connect( 'http://localhost:4000/news' );

// I expect this event to be triggered
socket.on('connect_error', function(){
    console.log('Connection Failed');
});
socket.on('connect', function(){
    console.log('Connected');
});
socket.on('disconnect', function () {
  console.log('Disconnected');
});
socket.send('hi there');

如果我执行将会发生这种情况:

$ node tmp_clientio.js 
Trying stuff ...

如果连接到不存在的通道,有关如何触发错误的任何想法？

更新:重命名connect_failed为connect_error