socket.io和HTTP node.js中的if / else条件

Question

I am trying to implement a conditional action for socket.io, using Node.js's HTTP package.

Basically what i want is, according to the get request, the socket.io to call different function or send different data.

Here is my code:

var http = require('http'),
fs = require('fs');

var app = http.createServer(function (request, response) {
fs.readFile("client.html", 'utf-8', function (error, data) {
    response.writeHead(200, {'Content-Type': 'text/html'});
    response.write(data);
    response.end();
});
}).listen(1337);

var io = require('socket.io').listen(app);

io.sockets.on('connection', function(socket) {
socket.on('message_to_server', function(data) {

    http.get("/something", function(res) {
        io.sockets.emit("message_to_client",{ message: data["message"] });
        console.log(data["message"]);
    });

    http.get("/else", function(res) {
        console.log("something else");
    });

});
});

What should i do to implement such feature?

Answer 1

I think you are doing it in the wrong way.

It can be done like

io.sockets.on('connection', function(socket) {
   socket.on("something", function(res) {
        socket.emit("message_to_client",{ message: data["message"] });
        console.log(data["message"]);
   });

   socket.on("else", function(res) {
        console.log("something else");
   });
});

and edit the views for route /something so as to emit something when it loads to server. and do the same for route /else

Here you are emiting the custom events to the server according to the page you are in sothat that server can respond/emit accordingly to each route. The other way you are trying doesnt seem to work. Sorry if i am wrong.

update

in your client side (views) you could have like

view1.html

var socket = io.connect('http://localhost:8080');
socket.on('connect', function(){
socket.emit('something');
});

socket.on('message_to_client', function (data) {
alert(data);
});

view2.html

var socket = io.connect('http://localhost:8080');
socket.on('connect', function(){
socket.emit('else');
});

socket.on('message_to_client', function (data) {
alert(data);
});

note

also note that from server if you use io.socket.emit it would broadcast to all connections . instead use socket.emit (in your case object is socket ) to send to the perticular connection