CORS with socket.io [英] CORS with socket.io

问题描述

我在使用express.io的node.js应用程序中遇到了CORS问题。我远程托管socket.io客户端js，因为这需要作为一个远程应用程序。

I'm having trouble with CORS on a node.js app using express.io. I'm hosting the socket.io client js remotely since this needs to works as a remote app.

<script src="resources/js/socket.io.min.js"></script>

它托管在OpenShift

It's hosted on OpenShift

js：

var ipaddr = process.env.OPENSHIFT_NODEJS_IP || "localhost";
var port = process.env.OPENSHIFT_NODEJS_PORT || 8080;
var express = require('express.io');
// magical express.io
var app = express();

// Enables CORS
var enableCORS = function(req, res, next) {
    res.header('Access-Control-Allow-Origin', '*');
    res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
    res.header('Access-Control-Allow-Headers', 'Content-Type, Authorization, Content-Length, X-Requested-With, *');

        // intercept OPTIONS method
    if ('OPTIONS' == req.method) {
        res.send(200);
    } else {
        next();
    };
};

app.configure(function() {
    // enable CORS!
    app.use(enableCORS);

});

app.http().io();
app.io.set('origins', '*:*');
    //.... other stuff
    app.listen(port, ipaddr);

然后在客户端：

var socket = io.connect(window.chat_url);

当我从localhost：8888和服务器localhost：8080 socket.io运行客户端时工作正常。

When I run the client from localhost:8888 with the server localhost:8080 socket.io works fine.

当我从localhost：8888和odechat-latestsightings.rhcloud.com上的服务器运行客户端时，socket.io会超时：

When I run the client from localhost:8888 and the server on odechat-latestsightings.rhcloud.com then socket.io times out:

Firebug：
GET http://nodechat-latestsightings.rhcloud.com:8888/socket.io/1/?t=1391542144169 1分16秒

Firebug: GET http://nodechat-latestsightings.rhcloud.com:8888/socket.io/1/?t=1391542144169 1m 16s

其他路线工作正常：
GET http://nodechat-latestsightings.rhcloud.com/rooms 200 OK 664ms

The other routes work fine: GET http://nodechat-latestsightings.rhcloud.com/rooms 200 OK 664ms

我根本无法理解这一点。

I just can't figure this out

推荐答案

，如果你的服务器是在openshift然后你应该绑定到端口：8000使用websockets，因为这是端口openshift的nginx反向代理有公共访问。

Also, if your server is on openshift then you should bind to port: 8000 to use websockets since that is the port openshift's nginx reverse proxy has public access.

您可以阅读更多从这里开始： https://developers.openshift.com/en/managing- port-binding-routing.html

You can read more from here: https://developers.openshift.com/en/managing-port-binding-routing.html

这篇关于CORS with socket.io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！