如何与Socket.IO 1.x和Express 4.x共享会话？

Question

如何与Socket.io 1.0和Express
4.x共享会话？我使用Redis商店，但我认为这没有关系。我知道我必须使用中间件来查看cookie和获取会话，但是不知道如何。我搜索了但找不到任何工作

    var RedisStore = connectRedis(expressSession);
    var session = expressSession({
        store: new RedisStore({
            client: redisClient
        }),
        secret: mysecret,
        saveUninitialized: true,
        resave: true
    });
    app.use(session);

    io.use(function(socket, next) {
        var handshake = socket.handshake;
        if (handshake.headers.cookie) {
            var str = handshake.headers.cookie;
            next();
        } else {
            next(new Error('Missing Cookies'));
        }
    });

Answer 1

解决方案非常简单。它只是没有很好的记录。也可以通过如下所示的小型适配器将快速会话中间件用作Socket.IO中间件：

sio.use(function(socket, next) {
    sessionMiddleware(socket.request, socket.request.res, next);
});

这是Express 4.x，Socket.IO 1.x和Redis的完整示例：

var express = require("express");
var Server = require("http").Server;
var session = require("express-session");
var RedisStore = require("connect-redis")(session);

var app = express();
var server = Server(app);
var sio = require("socket.io")(server);

var sessionMiddleware = session({
    store: new RedisStore({}), // XXX redis server config
    secret: "keyboard cat",
});

sio.use(function(socket, next) {
    sessionMiddleware(socket.request, socket.request.res || {}, next);
});

app.use(sessionMiddleware);

app.get("/", function(req, res){
    req.session // Session object in a normal request
});

sio.sockets.on("connection", function(socket) {
  socket.request.session // Now it's available from Socket.IO sockets too! Win!
});


server.listen(8080);