This should be what you need. Feel free to pass in whatever room name you want through the client. Only the server can handle assigning a socket to a room. Server: io.sockets.on(‘connection’, function(socket) { socket.on(‘join’, function(room) { socket.join(room); }); }); Client: socket.emit(‘join’, roomNum);
I managed to eventually answer this for myself. The socket.io getting started page isn’t clear on this, but I found that the server side of socket.io automatically hosts the .js file on starting node, in the directory specified in the documentation: “https://stackoverflow.com/socket.io/socket.io.js” So you literally just point to this url regardless of your web app … Read more
Spoiler: I am currently developing what’s going to be an open-source chat application. You can do that better by separating actions from the middleware, and even the socket client from the middleware. Hence, resulting in something like this: Types -> REQUEST, SUCCESS, FAILURE types for every request (not mandatory). Reducer -> to store different states … Read more
to send a message to a specific client save every one that connects to the server in an Object. var socketio = require(‘socket.io’); var clients = {}; var io = socketio.listen(app); io.sockets.on(‘connection’, function (socket) { clients[socket.id] = socket; }); then you can later do something like this: var socket = clients[sId]; socket.emit(‘show’, {});
The function passed to .on is called for each socket to do the initialization (binding events etc), and socket refers to that current socket. This will be client 1 when you receive a push message, because the handler function is bound to the push event of that socket – you bound that function when client … Read more
Find your server.listen call and change the port from 3000 to 80. Don’t forget that you have to run the program with the CAP_NET_BIND_SERVICE capability (see capabilities(7) for details) in order to bind to ports less than 1024 on Linux systems. root privilege will contain this, and other, privileges.
As far as I know, the Express app object does not know the server object. The way things work in Express, the app object is given to the server object, not the other way around. In fact a single app object can even be used with more than one server (sometimes done for an http … Read more
Since app.js is usually kind of the main initialization module in your app, it will typically both initialize the web server and socket.io and will load other things that are needed by the app. As such a typical way to share io with other modules is by passing them to the other modules in that … Read more
var minutes = 5, the_interval = minutes * 60 * 1000; setInterval(function() { console.log(“I am doing my 5 minutes check”); // do your stuff here }, the_interval); Save that code as node_regular_job.js and run it 🙂
In socket.IO 3.x New to version 3.x is that connected is renamed to sockets and is now an ES6 Map on namespaces. On rooms sockets is an ES6 Set of client ids. //this is an ES6 Set of all client ids in the room const clients = io.sockets.adapter.rooms.get(‘Room Name’); //to get the number of clients … Read more