I make the first steps in the node js and xmpp

I need to run at xmpp server on node js for messaging

Here's the process:
I use node-xmpp server <https://github.com/astro/node-xmpp>
run the example of a server (/examples/c2s.js)
join to server with two clients (clients tested on other servers jabber - it works and the messages are sending through)

Clients have authorization on my server.
But when I send a message from one client to another, the message comes to the server (I see it in the logs)
and that was the message does not come to recipient

I don `t know where to look for the problem
server configuration ? routing ? messaging may be necessary to add yourself ?

help me plz

my server code (by examples)

```
var xmpp = require('../lib/node-xmpp');

var c2s = new xmpp.C2SServer({
    port: 5222,
    domain: 'localhost'

});

// On Connect event. When a client connects.
c2s.on("connect", function(client) {
    c2s.on("register", function(opts, cb) {
        console.log("REGISTER");
    cb(true);
    });

    client.on("authenticate", function(opts, cb) {
        console.log("AUTH" + opts.jid + " -> " +opts.password); 
    cb(null); 
    });

    client.on("online", function() {
        console.log("ONLINE");
        client.send(new xmpp.Message({ type: 'chat' }).c('body').t("Hello there, little client."));
    });

    client.on("stanza", function(stanza) {
        console.log("STANZA" + stanza);

    });

    client.on("disconnect", function(client) {
        console.log("DISCONNECT");
    });

});

```

I run a server and connect to it by this code

```
var xmpp = require('../lib/node-xmpp');
var argv = process.argv;

if (argv.length < 6) {
    console.error('Usage: node send_message.js <my-jid> <my-password> <my-text> <jid1> [jid2] ... [jidN]');
    process.exit(1);
}

var cl = new xmpp.Client({ jid: argv[2], password: argv[3] });

cl.addListener('online',
   function() {argv.slice(5).forEach(
       function(to) {cl.send(new xmpp.Element('message', { to: to,type: 'chat'}).c('body').t(argv[4]));
       });

       // nodejs has nothing left to do and will exit
       // cl.end();
   });

cl.addListener('stanza',
    function(stanza) {
        if (stanza.is('message') &&
            // Important: never reply to errors!
            stanza.attrs.type !== 'error') {
            console.log("New message");
            // Swap addresses...
            stanza.attrs.to = stanza.attrs.from;
            delete stanza.attrs.from;
            // and send back.
            cl.send(stanza);
        }
    });

cl.addListener('error',
    function(e) {
       console.error(e);
       process.exit(1);
   });

```