I have a problem:

I use a room join system [which I programmed only in NodeJS] and socket.io.

/:roomid/

e.g. /

my route:

router.get('/room/:roomid/', function (req, res, next) {
    var id = req.params.roomid;
    //....
});

I want to make sockets in rooms, but how I make it with the namespace?

io.of("/room/:roomid/").on('connection', function (socket) {
   io.of("/room/:roomid/").emit('testsocket');
}

-> does not work

client code:

var socketIO = io(window.location.pathname);

socketIO.on('testsocket', function (data) {
        console.log("socket successful connected!");
});

I have a problem:

I use a room join system [which I programmed only in NodeJS] and socket.io.

https://example./room/:roomid/

e.g. https://example./room/764363553/

my route:

router.get('/room/:roomid/', function (req, res, next) {
    var id = req.params.roomid;
    //....
});

I want to make sockets in rooms, but how I make it with the namespace?

io.of("/room/:roomid/").on('connection', function (socket) {
   io.of("/room/:roomid/").emit('testsocket');
}

-> does not work

client code:

var socketIO = io(window.location.pathname);

socketIO.on('testsocket', function (data) {
        console.log("socket successful connected!");
});

• javascript
• node.js
• sockets
• websocket
• socket.io

• What do you mean by does not work ? Does it throw an error ? – user2652134 Commented Apr 15, 2018 at 11:27
• @BrahmaDev I mean: the socket does not connect. – Freddy C. Commented Apr 15, 2018 at 11:56
• Can you then also add the code you use to connect. – user2652134 Commented Apr 15, 2018 at 11:57
• @BrahmaDev Yes, but if I emit something it does not arrive. – Freddy C. Commented Apr 15, 2018 at 12:09
• Please, add the code here. I cannot debug things that I can't see. Meanwhile you're telling me contradicting points. – user2652134 Commented Apr 15, 2018 at 12:58

2 Answers 2

Socketio supports Dynamic namespace since 2.1.0.

The pr is here.

document is here:

A regex or a function can also be provided, in order to create namespace in a dynamic way:

const dynamicNsp = io.of(/^\/dynamic-\d+$/).on('connect', (socket) => {
  const newNamespace = socket.nsp; // newNamespace.name === '/dynamic-101'

  // broadcast to all clients in the given sub-namespace
  newNamespace.emit('hello');
});

// client-side
const socket = io('/dynamic-101');

// broadcast to all clients in each sub-namespace
dynamicNsp.emit('hello');

// use a middleware for each sub-namespace
dynamicNsp.use((socket, next) => { /* ... */ });

With a function:

io.of((name, query, next) => {
  next(null, checkToken(query.token));
}).on('connect', (socket) => { /* ... */ });

Server

var manager = io.of("/room").on('connection', function (socket) {
   socket.on("join", function(roomid){
       socket.join(roomid);
       manager.to(roomid).emit('testsocket',roomid);
   }
}

Client:

var socketIO = io("/room");
var roomID = window.location.pathname.splitOnLast("/")[1]; //Should ideally be got from req.params.roomid
socketIO.emit("join", roomID)
socketIO.on('testsocket', function (data) {
    console.log("Connected to room", data);
});