Getting online users

[genezablan]

Hi im new to express ws is there a way on how can i get the online users

var chatrooms = {};

app.ws('/send/:chatroom_id', function(ws,req,next) { var chatroom_id = req.chatroom_id; var room = chatrooms[chatroom_id] || { connections : [] }; room.connections.push(ws); chatrooms[chatroom_id] = room; ws.on('message', function(msg) { room.connections.forEach(function(conn) { conn.send(msg); }); }); next(); });

[HenningM]

Hi again,

Yeah, it should be fairly trivial to extend my previous example to also include a count of online users for each channel.

Something along these lines should work:

var chatrooms = {};

app.ws('/chatroom/:name', function(ws, req) {
  var name = req.params.name;
  var room = chatrooms[name] || {
    connections: []
  };
  room.connections.push(ws);
  chatrooms[name] = room;

  ws.on('message', function(msg) {
    room.connections.forEach(function(conn) {
      if (conn === ws) return;
      conn.send(msg);
    });
  });

  ws.on('close', function() {
    var idx = room.connections.indexOf(ws);
    if (idx !== -1) {
      room.connections.splice(idx, 1);
    }
  });
});

app.get('/chatroom/:name', function(req, res) {
  var connections = 0;
  var room = chatrooms[req.params.name];
  if (room) {
    connections = room.connections.length;
  }
  res.send({ connections: connections });
});