A toy chat server for node.js

toy-chat-server.js

net = require('net');

var sockets = [];

var s = net.Server(function(socket) {
    sockets.push(socket);

    var index = sockets.indexOf(socket);

    socket.on('data', function(d) {
        for(var i = 0; i < sockets.length; i++) {
            // don't write to our own socket since we typed the
            // message
            if(i !== index) {
                sockets[i].write("socket " + i + ": " + d);
            }
        }
    });
    
    // remove sockets that disconnect from the array
    socket.on('end', function() {
        sockets.splice(index,1);
    });
});

s.listen(8000);

/* sample session:

run the following at terminal tab A:

  $ node toy-chat-server.js

terminal tab B: telnet to localhost on port 8000 and type 'hi', etc

terminal tab C: telnet to localhost on port 8000 and type "what's up",
etc

stop the server by typing "killall -2 node" in a new tab

output in tabs B and C:

wkh@ubuntu:~/code$ telnet localhost 8000
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
hi
socket 0: what's up?
not much, you?
socket 0: just checking out this little chat server with node.js. it works!
i know. sweet!
socket 0: totally. catch you later.
later on bro
Connection closed by foreign host.
wkh@ubuntu:~/code$ 

wkh@ubuntu:~/code$ telnet localhost 8000
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
socket 1: hi
what's up?
socket 1: not much, you?
just checking out this little chat server with node.js. it works!      
socket 1: i know. sweet!
totally. catch you later.
socket 1: later on bro
Connection closed by foreign host.
wkh@ubuntu:~/code$ 

so you can see, it works.

*/