Node + telnet + OS X.

Question

美好的一天。

var events = require('events');
var net = require('net');

var channel = new events.EventEmitter();
channel.clients = {};
channel.subscriptions = {};

channel.on('join', function(id, client) {
this.clients[id] = client;
this.subscriptions[id] = function(senderId, message) {
    if (id != senderId) {
        this.clients[id].write(message);
    }
}
this.on('broadcast', this.subscriptions[id]);
});

var server = net.createServer(function(client) {
var id = client.remoteAddress + ':' + client.remotePort;

client.on('connect', function() {
    channel.emit('join', id, client);
});
client.on('data', function(data) {
    data = data.toString();
    channel.emit('broadcast', id, data);
});
});
server.listen(8888);

当我运行服务器并通过telnet连接'广播'时，无法正常工作。 “Node.js in Action”中的示例。书籍档案中的代码也不起作用。请帮忙。什么可能错了？我尝试将id的生成器更改为强大的inc“i”并省略... if（id！= senderId）...但是没有工作!!!

Answer 1

当调用net.createServer的回调函数时，它已暗示客户端已连接。另外，我认为connect事件甚至不会由net.createServer生成。

因此，在发出'join'之前，不要等待connect事件，而是立即发出：

var server = net.createServer(function(client) {
  var id = client.remoteAddress + ':' + client.remotePort;

  // we got a new client connection:
  channel.emit('join', id, client);

  // wait for incoming data and broadcast it:
  client.on('data', function(data) {
    data = data.toString();
    channel.emit('broadcast', id, data);
  });
});