如何将两个node.js服务器与websockets连接? [英] How to connect two node.js servers with websockets?

问题描述

这是我的问题:

我有服务器A，运行node.js并使用socket.io与客户端(Web浏览器)进行通信.这一切都很好，花花公子.

I have server A, running node.js and using socket.io for communicating with clients (web browsers). This all is running fine and dandy.

但是，现在我有了服务器B，也需要通过websocket连接到服务器A，所以我遇到了麻烦.我发现，没有一个node.js websocket客户端不能与服务器A上的socket.io一起使用.

However, now that I have server B, which also needs to connect to server A through websockets, I have hit a wall. None of the node.js websocket clients I've found won't work with the socket.io on the server A.

因此，我正在努力做到这一点:

So, this is the case I'm striving for:

.--------.      .----------.      .----------.
| CLIENT | <--> | SERVER A | <--> | SERVER B |
'--------'      '----------'      '----------'

客户端-服务器连接是通过socket.io完成的

Client-server A connection is done through socket.io

现在，服务器B(正在运行node.js)应该通过websocket连接到服务器A(以便通过端口80).但是...

Now, Server B (running node.js) should connect to server A via websocket (in order to go through port 80). But...

即使socket.io-client模块中的示例代码也不起作用...:/

Even the example code in socket.io-client module doesn't work... :/

// Connect to server
var socket = new io.Socket('localhost', {port: 8080});
socket.connect();

// Add a connect listener
socket.on('connect', function(socket) { 
    console.log('Connected.');
});

代码通过时没有任何错误，执行在几秒钟后结束.

The code just passes without any errors and execution ends after few seconds.

更新:代码示例

服务器(可以正常工作)如下所示:

Server (which works just fine) looks like this:

// Load requirements
var http = require('http'),
    io = require('socket.io');

// Create server & socket
var server = http.createServer(function(req, res){

    // Send HTML headers and message
    res.writeHead(404, {'Content-Type': 'text/html'});
    res.end('<h1>Aw, snap! 404</h1>');
});
server.listen(8080);
io = io.listen(server);

// Add a connect listener
io.sockets.on('connection', function(socket) { 

    console.log('Client connected.');

    // Disconnect listener
    socket.on('disconnect', function() {
        console.log('Client disconnected.');
    });
});

客户长这样

console.log('1');

// Connect to server
var io = require('socket.io-client')
var socket = new io.Socket('localhost', {port: 8080});
socket.connect();

console.log('2');

// Add a connect listener
socket.on('connect', function(socket) { 
    console.log('Connected!');
});

console.log('3');

1、2和3可以很好地打印出来，没有错误，几秒钟后该过程就退出了

1, 2 and 3 prints out just fine, no errors, and few seconds later the process just exits

此外，即使我在"everything"上设置了socket.io日志记录，服务器A也不向日志输出任何内容.

Also, server A doesn't output anything to the log, even though I have the socket.io logging set on "everything".

推荐答案

由于某些原因，即使我对它们进行了三遍检查，我仍在使用旧示例.嗯，好吧.

Turns out I was using old examples, for some reason, even though I triple checked them. Well, doh.

此外，事实证明，socket.io-client在最新的Node(6.x.x)上已损坏.设法从github找到了一个更新，替换了文件，是的，一切正常！

Also, it turned out that the socket.io-client is broken on latest Node (6.x.x). Managed to find an update from github for it, replaced the files and yay, everything's working!

编辑:不幸的是，我没有保存任何到工作示例的链接，但是在快速浏览了一下代码之后，似乎唯一的更改就是客户端代码，现在看起来像这样:

Edit: Unfortunately I didn't save any links to working examples but after quickly skimming through the code it seems that the only changes were to the client code, which now looks like this:

console.log('1');

// Connect to server
var io = require('socket.io-client')
var socket = io.connect('localhost:8080', {reconnect: true});

console.log('2');

// Add a connect listener
socket.on('connect', function(socket) { 
    console.log('Connected!');
});

console.log('3');

这篇关于如何将两个node.js服务器与websockets连接?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！