Sending messages client->server->client on socket.io on node.js

javascript, jquery, node.js, sockets

Solution

Client-side. A player moves and the function movePlayer is executed:

function movePlayer () {
    socket.emit ('player move', {map: 4, coords: '0.0'});
}

socket.on ('updatePlayer', function (msg) {
    console.log ('A player moves on map ' + msg.map + ' on coords ' + msg.coords);
});

Server-side. When someone moves, a 'updatePlayer' is emitted for each socket except the original player. On each client side, the updatePlayer is intercepted.

socket.on ('player move', function (msg) {
    io.sockets.emit ('updatePlayer', msg);
});

Problem

I'm using NodeJS+Socket.IO for simple web game. It works. Why? Here's my `server.js` ``` var app = require('express').createServer(); var io = require('socket.io').listen(app); io.sockets.on('connection', function (socket) { socket.on('set nickname' , function (nickname) { socket.nickname = nickname; console.log(nickname + ' just connected!'); }); socket.on('msg' , function (msg) { socket.msg = msg; io.sockets.emit('response', msg); }); socket.on('updatePlayer' , function (updatePlayer) { console.log("Someone just moved on the map!"); }); }); app.listen(8080); ``` The reason I know it works is because, when I load the page and this script executes: ``` // SERVER STUFF socket.on('connect', function () { console.log('We are connected!'); name = $(".name").val(); this.emit('set nickname', name, function (success) {}); msg = name + "|" + currX + "|" + currY + "|" + currentMap; this.emit('msg', msg, function (success) {}); socket.on('response', function (data) { var theMsg = data.split("|"); sayDialog("New player! " + theMsg[0] + " connected on map " + theMsg[3] + " on coordinates (" + theMsg[1] + "," + theMsg[2] + ")"); }); }); ``` I get in my dialogbox ("CSS div") something like `New player! weka connected on map 4 on coordinates (10,5)` OK, cool, so it works! However, when I "move" I try sending a message to server using this ``` socket.on('updatePlayer', function () { console.log("Testing..."); }); ``` I don't even see `console` say Testing. I don't know why.

Original source