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Example of setting-up dynamic "rooms" for socket.io private messaging.
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| //tested with: | |
| // "express": "^4.16.2", | |
| // "request": "^2.83.0", | |
| // "socket.io": "^2.0.4" | |
| // set-up a connection between the client and the server | |
| var socket = io.connect(); | |
| // let's assume that the client page, once rendered, knows what room it wants to join | |
| var room = "abc123"; | |
| socket.on('connect', function() { | |
| // Connected, let's sign-up for to receive messages for this room | |
| socket.emit('room', room); | |
| }); | |
| socket.on('message', function(data) { | |
| console.log('Incoming message:', data); | |
| }); | |
| // show a message when other user is typing | |
| var typeTimer; | |
| var typingInterval = 1000; | |
| $$(chatBar.textarea).on("keyup keydown change blur", function (e) { | |
| if (e.type === 'keyup') { | |
| clearTimeout(typeTimer); | |
| typeTimer = setTimeout(function () { | |
| socket.emit("notify typing", { | |
| name: sender.username | |
| }); //sending data to server | |
| }, typingInterval); | |
| } | |
| }); | |
| socket.on("typing", function (data) { | |
| $('.typing-notification').html(data.name + " is typing").slideDown(); | |
| setTimeout(function () { | |
| $('.typing-notification').slideUp().html(''); | |
| }, 3000); | |
| }); |
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| // attach Socket.io to our HTTP server | |
| io = socketio.listen(server); | |
| // handle incoming connections from clients | |
| io.sockets.on('connection', function(socket) { | |
| // once a client has connected, we expect to get a ping from them saying what room they want to join | |
| socket.on('room', function(room) { | |
| socket.join(room); | |
| }); | |
| }); | |
| // now, it's easy to send a message to just the clients in a given room | |
| room = "abc123"; | |
| io.sockets.in(room).emit('message', 'what is going on, party people?'); | |
| // send a notify typing on client | |
| socket.on("notify typing", function (data) { | |
| socket.broadcast.to(chatRoom).emit('typing', data); | |
| }); |
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