客户端上的节点网络套接字超时错误

Question

const net = require('net');
const server = net.createServer((c) => { //'connection' listener
  console.log('client connected');
  c.on('end', () => {
    console.log('client disconnected');
  });
  c.write('hello\r\n');
  c.pipe(c);
});
server.listen(8124, () => { //'listening' listener
  console.log('server bound');
});

var net = require('net');

var HOST = 'xxx.xx.xx.xx';
var PORT = xxxx;

var client = new net.Socket();
client.connect(PORT, HOST, function() {

    console.log('CONNECTED TO: ' + HOST + ':' + PORT);
    // Write a message to the socket as soon as the client is connected, the server will receive it as message from the client
    client.write('I am Chuck Norris!');

});

// 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('DATA: ' + data);
    // Close the client socket completely
    client.destroy();

});

// Add a 'close' event handler for the client socket
client.on('close', function() {
    console.log('Connection closed');
});

错误：在object.exports._errnoException(util.js:856:11)在exports._exceptionWithHostPort(util.js:879:20)在tcpConnectTRap.AfterConnect[as oncomplete](net.js:1063:14)vivek@vivek-latitude-e6220://var/www/html/test/node/net$node client.js events.js:141 throw er；//未处理的“错误”事件^

错误：在object.exports._errnoException(util.js:856:11)在exports._exceptionWithHostPort(util.js:879:20)在tcpConnectTRap.AfterConnect[as oncomplete](net.js:1063:14)连接ETIMEDOUT xxxx.xx.xx.xx:xxxx

当我在本地运行服务器代码时，它工作得很好。请帮我找出错误。

Answer 1

您需要侦听Bluemix为应用程序分配的端口。Bluemix将为您的应用程序分配一个端口，您需要在该端口上绑定。Bluemix将对应用程序进行负载平衡，并使应用程序在端口443和80上可用。

您可以使用以下代码获取端口。

var port = process.env.PORT || 8124;

另外，您也不需要绑定到主机。

const net = require('net');
const server = net.createServer((c) => { //'connection' listener
  console.log('client connected');
  c.on('end', () => {
    console.log('client disconnected');
  });
  c.write('hello\r\n');
  c.pipe(c);
});
var port = process.env.PORT || 8124;
server.listen(port, () => { //'listening' listener
  console.log('server bound');
});