똑같이 했는데 req.session undefined가 뜨네요..

  chat.on('connection', (socket) => {
    console.log('chat 네임스페이스에 접속..');

    const req = socket.request;       ////////////// 이 부분 누락? 복구.. 그래도..

    //console.log('req: ', req);
    const { headers: { referer } } = req;
    console.log('referer: ', referer);   // 추천에 따라 출력해 봄..
    console.log('req.session', req.session);    // req.session undefined????
    // 주소에서 룸id를 추출하는 부분..

    const roomId = referer
    .split('/')[referer.split('/').length - 1]
    .replace(/\?.+/, '');

    socket.join(roomId);      ((1))

    // 2. socket.to(방 아이디) 메서드로 특정 방에 데이터를 보낼 수 있음. 조금 전 세션 미들웨어와 Socket.IO를 연결했으므로
    // 웹 소켓에서 세션을 사용할 수 있음. 방에 참여할 때 방에 누군가가 입장했다는 시스템 메시지를 보냄.  
    socket.to(roomId).emit('join', {
      user: 'system',
      chat: `${req.session.color}님이 입장하셨습니다.`,   // TypeError: Cannot read property 'color' of undefined
   });

//////////////////////////////////////////

8005 번 포트에서 대기중

몽고디비 연결 성공

room 네임스페이스에 접속

새로운 room.on 접속: ::1 h6N5SLM0D46UmyPoAAAB undefined

room 네임스페이스에 접속

새로운 room.on 접속: ::1 9dyP8hILc4_NIhx_AAAD undefined

check req.sessioh.color..

req.session.color: #3a7861

room 네임스페이스 접속 해제....

check req.sessioh.color..

Mongoose: rooms.insertOne({ max: 10, _id: ObjectId("5fe9ddab4360bd497033234d"), title: '나', owner: '#3a7861', password: '', createdAt: new Date("Mon, 28 Dec 2020 13:29:15 GMT"), __v: 0}, { session: null })

check req.sessioh.color..

Mongoose: rooms.findOne({ _id: ObjectId("5fe9ddab4360bd497033234d") }, { projection: {} })

Mongoose: chats.find({ room: ObjectId("5fe9ddab4360bd497033234d") }, { sort: { createdAt: 1 }, projection: {} })

req.session.color: #3a7861

chat 네임스페이스에 접속..

referer: http://localhost:8005/room/5fe9ddab4360bd497033234d?password=

req.session undefined

chat: `${req.session.color}님이 입장하셨습니다.`, // TypeError: Cannot read property 'color' of undefined

TypeError: Cannot read property 'color' of undefined

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