Socket.IO 在子域虚拟主机和代理上

Question

我正在尝试将 socket.example.com:4000 代理到 websocket 服务器 mydomain.com:3000 但客户端也可以通过 *.example.com:4000 连接到服务器，就像 vhost 没有效果和代理配置是全局设置的。我不希望其他子域被代理。

我用vhost and http-proxy-middleware

const options = {
    target: 'http://example.com:3000',
    changeOrigin: true,
    ws: true
};
    
const wsProxy = createProxyMiddleware(options);

app.use(vhost('socket.example.com', wsProxy));

Answer 1

我不需要虚拟主机，也不需要 http-proxy-middleware。我用了 http-proxy 和一些香草 javascript。

import httpProxy from 'http-proxy';

const proxy = httpProxy.createProxyServer({
    target: {
        host: 'example.com',
        port: 4001
    }
});

server.on('upgrade', (req, socket, head) => {
    const domain = req.headers.host;
    const host = domain.split(':')[0];

    if (host === 'socket.example.com') {
        proxy.ws(req, socket, head);
    } else {
        socket.destroy();
    }
});

##更新## 运行在没有代理或专用 websocket 服务器的同一台服务器上。

import { Server } from "socket.io";

const app = express();
const server = http.createServer(app);

const io = new Server(server, {
    allowRequest: (req, fn) => {
        const domain = req.headers.host;
        const host = domain.split(':')[0];

        fn(null, host === `socket.example.com`);
    }
});

io.on('connection', (socket) => {
    console.log('a user connected');
});

Socket.IO 在子域虚拟主机和代理上

Socket.IO on Subdomain vhost and proxy

http-proxy

vhosts

node.js

socket.io

http-proxy-middleware