javascript - How to add contacts in node xmpp roster? -

i'm using node-xmpp-server xmpp server chat application.as client i'm using spark.i want add contacts roster.how can this?i've run on ejabbberd , iti work need implement code.thanks advice!

my server code:

var startserver = function(done) {     // sets server.     server = new xmpp.c2s.tcpserver({         port: 5222,         domain: 'localhost'     })      // on connection event. when client connects.     server.on('connection', function(client) {         // that's way add mods given server.          // allows developer register jid against want         client.on('register', function(opts, cb) {             console.log('register')             console.log(cb);             cb(false)         })          // allows developer authenticate users against want.         client.on('authenticate', function(opts, cb) {             //console.log('server:', opts.username, opts.password, 'authenticating')             if (opts.password === 'secret') {                 //console.log('server:', opts.username, 'auth ok')                 cb(null, opts)             }             else {                 //console.log('server:', opts.username, 'auth fail')                 cb(false)             }         })          client.on('online', function() {             console.log('online')         })          // stanza handling         client.on('stanza', function(stanza) {             console.log('server:', client.jid.local, 'stanza', stanza.tostring())             //var = stanza.attrs.from            // stanza.attrs.from = stanza.attrs.to             //stanza.attrs.to =            if (stanza.is('message') && (stanza.attrs.type !== 'error')) {              client.send(stanza);            }            else {             client.send(stanza);         }         })          // on disconnect event. when client disconnects         client.on('disconnect', function() {             console.log('server:', client.jid.local, 'disconnect')         })      })      server.on('listening', done) }  startserver(function() {    }) 

this super basic example, can extend want:

first of all, need iq stanzas, get type add:

client.on('stanza', function (stanza) {     console.log('server:', client.jid.local, 'stanza', stanza.tostring())     if (stanza.is('message') && (stanza.attrs.type !== 'error')) {         client.send(stanza);     }     else if (stanza.is('iq') && stanza.attrs.type == 'get') {         ...     }     else {         client.send(stanza);     } }); 

we have loop on children of request, , node name attribute equal query, , xmlns attribute equal jabber:iq:roster:

... else if (stanza.is('iq') && stanza.attrs.type == 'get') {     (var = 0; < stanza.children.length; i++) {         if (stanza.children[i].name == 'query' && stanza.children[i].attrs.xmlns == 'jabber:iq:roster') {              // create 5 fake users                 (var j = 0; j < 5; j++) {                  // roster request, create response node                 var roster = new xmpp.element('iq', {                     id: stanza.attrs.id, // copy id                     to: stanza.attrs.from, // send sender                     type: 'set'                 });                  roster.c('query', {xmlns: 'jabber:iq:roster', ver: 'ver13'})// add children tag `query`, 2 attribute xmlns , ver                     .c('item', { // add children 'item'                         jid: 'name' + j + '@test.com', // create jid                         name: 'user ' + j, // generate name                         subscription: 'both'                     }).c('group').t('yourgroup'); // add 'yourgroup' group                  client.send(roster); // send client             }          }     }     client.send(stanza); } else ... 

in example, created 5 'fake' users , sent them user, can apply kind of loop real user list instance.

a little screenshot:

as can see, create 'yourgroup' group, , adds 5 users it.

when try start conversation 1 of users, can see correctly generated jid in top bar.

hope helps.