我在 localhost:8000 上为我的应用程序运行 webpack-dev-server,在端口 3000 上运行 express+socket.io 为我的 api 运行。我已经代理了在 webpack.config 中 socket.io 的请求.js如下所示:
devServer: {
proxy: {
'/socket.io': {
target: 'http://localhost:3000',
ws: true
}
}
}
但是,不仅 express 和 socket.io 中的会话 ID 不匹配,而且 express 中的会话 ID 会更改每个请求:
服务器:
let app = require('express')();
let session = require('express-session')({
secret: 'panopticon',
resave: true,
saveUninitialized: true
});
let server = require('http').createServer(app);
let io = require('socket.io')(server);
//session middleware
app.use(session);
io.use(require('express-socket.io-session')(session, {
autoSave: true
}));
let i=0;
app.get('/socket.io', (req, res) => {
console.log(i++, req.session.id);
//0 'ShgnU91kCZzC7xHP9B57ZtsCbwi3XjdB'
//1 'qLsYYpRZXpyoUrcKzF6K7uoAIKtE9oCh'
res.send();
});
io.on('connection', socket => {
console.log(socket.handshake.session.id);
//MRUYZMVstMh6ssNrq9LP-Z4vTaT5SZcs
});
客户:
//connect to socket
let socket = io();
//make two requests to /socket.io
fetch('socket.io').then(() => fetch('socket.io'));
我让它工作的唯一方法是先做一个 AJAX 请求来localhost:3000
:
fetch('http://127.0.0.1:3000', {
credentials: 'include'
});
响应具有以下处理程序:
app.use('/', (req, res) => {
res.header('Access-Control-Allow-Origin', 'http://127.0.0.1:8080');
res.header('Access-Control-Allow-Credentials', 'true');
res.sendStatus(200);
});
GitHub Gist