node.js – 节点JS执行函数两次

参见英文答案 > nodejs – http.createServer seems to call twice                                    2个
stackoverflow新增,Node新增.

我有一个简单的套接字服务器和一个Web服务器.

如果有人连接了Web服务器,我希望Web服务器向套接字服务器发送消息.

浏览器< => Web服务器/套接字客户端< =>套接字服务器

我创建了这样的服务器：

var http = require('http');
var net = require('net');
var HOST = '192.168.1.254';
var PORT = 8888;
var client = new net.Socket();

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n', function(){
      client.connect(PORT, HOST, function() {
        console.log('Connected To: ' + HOST + ':' + PORT);
        client.write('0109001' + "\n");
      });   

    // Add a 'data' event handler for the client socket
    // data is what the server sent to this socket
        client.on('data', function(data) {
            console.log('The Data: ' + data);
            client.destroy();
        });

        // Add a 'close' event handler for the client socket
        client.on('close', function() {
            console.log('Connection closed');
        });
  });
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

此代码有效,但Web服务器将消息发送到套接字服务器两次.
我是否做错了可能回调或其他什么？
任何帮助,将不胜感激.

如果您通过浏览器调用此代码,它会向服务器发送2个请求.一个用于FavIcon,另一个用于页面本身.

回调中的代码被调用两次,因为有2个请求.

正如Matt所说：不要将套接字响应处理程序放在回调中,因为你松开了对它们的引用,并为每个请求附加了一个新的处理程序.

var http = require('http');
var net = require('net');
var HOST = '192.168.1.254';
var PORT = 8888;
var client = new net.Socket();
var url   = require('url');

http.createServer(function (req, res) {
  console.log(url.parse(req.url));
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n', function(){

        console.log('Connected To: ' + HOST + ':' + PORT);

  });
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');