http-proxy-rules和Websockets

Question

我找不到任何文件/答案来满足我的需求。

我有点腌渍。 我正在开发一个websocket应用程序，它将通过创建新服务（websocket服务器）来扩展模块。 当然这意味着要连接的端口越来越多。 问题是，我们的公司政策只有很少的端口，所以我需要代理我的请求。

我已经阅读了许多使用NGINX的答案，但我根本不能。 首先，我正在运行Windows，第二，我们公司对可以使用和不可以使用的内容非常严格。 不过，我可以安装任何节点模块。 我试图使用http-proxy模块和http-proxy-rules。

问题是，我在每个websocket请求上都得到了404。 我会注意到默认代理（对于普通的web服务，而不是套接字）工作正常100％。

这是我目前的代码：

var http = require('http'),
      httpProxy = require('http-proxy'),
      HttpProxyRules = require('http-proxy-rules');

  // Set up proxy rules instance
  var proxyRules = new HttpProxyRules({
    rules: {
      '.*/ws/admin': 'http://localhost:26266', // Rule for websocket service (admin module)
      '.*/ws/quickquery': 'http://localhost:26265' // Rule for websocket service (quickquery module)
    },
    default: 'http://Surface.levisinger.com:8080' // default target
  });

  // Create reverse proxy instance
  var proxy = httpProxy.createProxy();

  // Create http server that leverages reverse proxy instance
  // and proxy rules to proxy requests to different targets
  http.createServer(function(req, res) {

    // a match method is exposed on the proxy rules instance
    // to test a request to see if it matches against one of the specified rules
    var target = proxyRules.match(req);
    if (target) {     
      //console.log(req); 
      console.log("Returning " + target + " for " + req.headers.host);
      return proxy.web(req, res, {
        target: target,
        ws: true
      });      
    }

    res.writeHead(500, { 'Content-Type': 'text/plain' });
    res.end('The request url and path did not match any of the listed rules!');
  }).listen(5050);

我连接到websocket的客户端代码如下所示：

var servPath = (cliSettings["AppPaths"]["Admin"] == null) ? 'http://' + window.location.hostname + ':5050' : cliSettings["AppPaths"]["Admin"],
    AdminIO = new io(servPath, {
        extraHeaders: {
            Service: "Admin"
        },
        path: '/ws/admin'})

...

websocket服务器的调用方式如下：

io = require('socket.io').listen(26266,{ path: '/ws/admin'}) // can use up to 26484

我真的希望这里有人会有个主意。 谢谢！

Answer 1

弄清楚如何做到这一点。 这有几件事情...... 1.如果你想代理它们，你必须使用自定义websocket路径。 2.在代理它们时，你必须给出websocket的整个路径。 3.您需要指定一个事件来处理websocket（ws）流量。

这是大家的一个例子。

++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++

代理服务器：

var   ini = require('node-ini'),
      conf = ini.parseSync('../settings/config.ini'),
      http = require('http'),
      httpProxy = require('http-proxy'),
      HttpProxyRules = require('http-proxy-rules');

  // Set up proxy rules instance
  var proxyRules = new HttpProxyRules({
    rules: {
      '.*/ws/remote': 'http://' + conf["Server"]["binding"] + ':26267/ws/remote',
      '.*/ws/admin': 'http://' + conf["Server"]["binding"] + ':26266/ws/admin', // Rule for websocket service (admin module)
      '.*/ws/quickquery': 'http://' + conf["Server"]["binding"] + ':26265/ws/quickquery' // Rule for websocket service (quickquery module)      
    },
    default: 'http://' + conf["Server"]["binding"] + ':8080' // default target
  });

  // Create reverse proxy instance
  var proxy = httpProxy.createProxy();

  // Create http server that leverages reverse proxy instance
  // and proxy rules to proxy requests to different targets
  var proxyServer = http.createServer(function(req, res) {

    // a match method is exposed on the proxy rules instance
    // to test a request to see if it matches against one of the specified rules
    var target = proxyRules.match(req);
    if (target) {     
      //console.log(req.url); 
      //console.log("Returning " + target + " for " + req.url);
      return proxy.web(req, res, {
        target: target,
        ws: true
      });      
    }

    res.writeHead(500, { 'Content-Type': 'text/plain' });
    res.end('The request url and path did not match any of the listed rules!');
  }).listen(conf["Server"]["port"]);

//
// Listen to the `upgrade` event and proxy the
// WebSocket requests as well.
//
proxyServer.on('upgrade', function (req, socket, head) {
    var target = proxyRules.match(req);
    if (target) {
        return proxy.ws(req, socket, head, { target: target });      
    }
});
process.on('SIGINT', function() {
   db.stop(function(err) {
     process.exit(err ? 1 : 0);
   });
});

Websocket Server套接字监听器：

io = require('socket.io').listen(26266,{ path: '/ws/admin'});

从客户端页面连接到websocket：

AdminIO = new io({path: '/ws/admin'});

++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++

上面的示例将通过端口80代理我的“admin”连接，该连接在端口26266上运行。（我当然建议在每种情况下使用443 / SSL，但这有点复杂）。

希望这有助于某人！