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<!DOCTYPE html>
<!--
* Copyright (C) 2012 Doubango Telecom <http://www.doubango.org>
* License: BSD
* This file is part of Open Source sipML5 solution <http://www.sipml5.org>
-->
<html>
<!-- head -->
<head>
<meta charset="utf-8" />
<title>sipML5 Programmer's guide</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="Keywords" content="doubango, sipML5, VoIP, HTML5, WebRTC, RTCWeb, SIP, IMS, Video chat, VP8, live demo " />
<meta name="Description" content="HTML5 SIP client using WebRTC framework" />
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<meta name="author" content="Doubango Telecom" />
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class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span>
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<a class="brand" href="./index.html">Doubango Telecom</a>
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<li><a href="../index.html?svn=20">Home</a></li>
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</div>
</div>
<div class="container">
<h1>Forword</h1>
<p>
This document has been written by us (<a href="http://www.doubango.org">Doubango Telecom</a>) to help developers to quickly create innovative multimedia applications
for the desktop and mobile platforms. If you are a developer and is looking for the best way to develop a plugin-free NGN (VoIP, Messaging, Video Conferencing, ...) applications for these platforms
then, your are at the right place. <br />
If you want to get help or have some feedbacks then please visit the <a href="http://code.google.com/p/sipml5/">developer's website</a> or subscribe to our <a href="http://groups.google.com/group/doubango/"> developer mailing list</a>. <br />
We highly recommend checking other SIPML5 components: <a target=_blank href="http://www.webrtc2sip.org">webrtc2sip</a>, <a target=_blank href="http://click2dial.org">click-to-call</a>, <a target=_blank href="http://code.google.com/p/webrtc4all/">webrtc4all</a> and <a target=_blank href="http://conf-call.org/">SIP TelePresence (Video Group chat) client</a>. <br />
<br />
<font size="3">
<strong>The complete API is available <a href="docgen/symbols/SIPml.html">here</a></strong><br/>
</font>
</p>
<hr />
<ul>
<li>
<a href="#ProgramingwiththeAPI">Programing with the API</a>
<ul>
<li><a href="#ClassDiagram">Class diagram</a></li>
<li><a href="#DownloadtheAPI">Download the API</a></li>
<li><a href="#Initializetheengine">Initialize the engine</a></li>
<li><a href="#login">Register/login</a></li>
<li><a href="#makeCall">Making/receiving audio/video call</a></li>
<li><a href="#screenShare">Sharing your screen/desktop</a></li>
<li><a href="#sendMessage">Send/receive SIP MESSAGE (SMS-like)</a></li>
<li><a href="#publishPresence">Publish presence status</a></li>
<li><a href="#subscribePresence">Subscribe for presence status change</a></li>
</ul>
</li>
<li><a href="#TechnicalHelp">Technical Help</a></li>
</ul>
<hr />
<a name="ProgramingwiththeAPI"></a>
<h1>Programing with the API</h1>
<p>
This section is a quick overview of the main features and may lack details. For more information on each function please click on it. <br />
A fully featured demo is hosted at <a href="http://sipml5.org/call.htm">http://sipml5.org/call.htm</a>.<br />
Below, a very compact code showing how to initialize the engine, start the stack and make video call from <i>bob</i> to <i>alice</i> in <b>less than 15 lines</b>:
</p>
<pre><code>
<a href="docgen/symbols/SIPml.html#.init">SIPml.init</a>(
function(e){
var stack = new <a href="docgen/symbols/SIPml.Stack.html#constructor">SIPml.Stack</a>({realm: 'example.org', impi: 'bob', impu: 'sip:bob@example.org', password: 'mysecret',
events_listener: { events: 'started', listener: function(<a href="docgen/symbols/SIPml.Stack.Event.html">e</a>){
var callSession = stack.<a href="docgen/symbols/SIPml.Stack.html#newSession">newSession</a>('call-audiovideo', {
video_local: document.getElementById('video-local'),
video_remote: document.getElementById('video-remote'),
audio_remote: document.getElementById('audio-remote')
});
callSession.<a href="docgen/symbols/SIPml.Session.Call.html#call">call</a>('alice');
}
}
});
stack.<a href="docgen/symbols/SIPml.Stack.html#start">start</a>();
}
);
</code></pre>
<hr />
<a name="ClassDiagram"></a>
<h2>Class diagram</h2>
<p>
Below, the image is an overview of the main classes and functions: <br />
</p>
<table>
<tr><td><img src="images/classes.bmp" alt="Class overview"/></td></tr>
<tr><td align='center'><u>Class diagram</u></td></tr>
</table>
<hr />
<a name="DownloadtheAPI"></a>
<h2>Download the API</h2>
<p>
The API is a single javascript file which could be downloaded <a href="http://sipml5.googlecode.com/svn/trunk/release/SIPml-api.js">here</a>. This file is generated as explained <a href="http://code.google.com/p/sipml5/wiki/FAQ#How_to_reduce_the_size_of_the_scripts_before_deploying">here</a>.
</p>
<hr />
<h2>Initialize the engine</h2>
<a name="Initializetheengine"></a>
This is the first function to call in order to initialize the media and signaling engines.
<pre><code>
var readyCallback = function(e){
<a href="#CreateaSIPstackFunc">createSipStack()</a>; // see <a href="#CreateaSIPstack">next section</a>
};
var errorCallback = function(e){
console.error('Failed to initialize the engine: ' + e.message);
}
<a href="docgen/symbols/SIPml.html#.init">SIPml.init</a>(readyCallback, errorCallback);
</code></pre>
<hr />
<a name="CreateaSIPstack"></a>
<h2>Create a SIP stack</h2>
<p>
A <a href="docgen/symbols/SIPml.Stack.html">SIP stack</a> is a base object and must be created before any attempt to make/receive calls, send messages or manage presence.
This section shows how to create a stack and start it. Starting a stack is an asynchronous function which mean you have to use an event listener to be notified for the state change.
</p>
<pre><code>
var sipStack;
var eventsListener = function(<a href="docgen/symbols/SIPml.Stack.Event.html">e</a>){
if(e.<a href="docgen/symbols/SIPml.Event.html#type">type</a> == 'started'){
<a href="#loginFunc">login</a>();
}
else if(e.<a href="docgen/symbols/SIPml.Event.html#type">type</a> == 'i_new_message'){ // incoming new SIP MESSAGE (SMS-like)
<a href="#acceptMessageFunc">acceptMessage</a>(e);
}
else if(e.<a href="docgen/symbols/SIPml.Event.html#type">type</a> == 'i_new_call'){ // incoming audio/video call
<a href="#acceptCallFunc">acceptCall</a>(e);
}
}
<a name="CreateaSIPstackFunc"></a>
function createSipStack(){
sipStack = new <a href="docgen/symbols/SIPml.Stack.html#constructor">SIPml.Stack</a>({
realm: 'example.org', // mandatory: domain name
impi: 'bob', // mandatory: authorization name (IMS Private Identity)
impu: 'sip:bob@example.org', // mandatory: valid SIP Uri (IMS Public Identity)
password: 'mysecret', // optional
display_name: 'Bob legend', // optional
websocket_proxy_url: 'wss://sipml5.org:10062', // optional
outbound_proxy_url: 'udp://example.org:5060', // optional
enable_rtcweb_breaker: false, // optional
events_listener: { events: '*', listener: eventsListener }, // optional: '*' means all events
sip_headers: [ // optional
{ name: 'User-Agent', value: 'IM-client/OMA1.0 sipML5-v1.0.0.0' },
{ name: 'Organization', value: 'Doubango Telecom' }
]
}
);
}
sipStack.<a href="docgen/symbols/SIPml.Stack.html#start">start</a>();
</code></pre>
<hr />
<a name="login"></a>
<h2>Register/login</h2>
<p>
Registering to the server is not required in order to be able to make audio/video call or send messages.
</p>
<pre><code>
<a name="loginFunc"></a>
var registerSession;
var eventsListener = function(<a href="docgen/symbols/SIPml.Session.Event.html">e</a>){
console.info('session event = ' + e.<a href="docgen/symbols/SIPml.Event.html#type">type</a>);
if(e.<a href="docgen/symbols/SIPml.Event.html#type">type</a> == 'connected' && e.<a href="docgen/symbols/SIPml.Session.Event.html#session">session</a> == registerSession){
<a href="#makeCallFunc">makeCall</a>();
<a href="#sendMessageFunc">sendMessage</a>();
<a href="#publishPresenceFunc">publishPresence</a>();
<a href="#subscribePresenceFunc">subscribePresence</a>('johndoe'); // watch johndoe's presence status change
}
}
var login = function(){
registerSession = <a href="docgen/symbols/SIPml.Stack.html#newSession">sipStack.newSession</a>('register', {
events_listener: { events: '*', listener: eventsListener } // optional: '*' means all events
});
registerSession.<a href="docgen/symbols/SIPml.Session.Registration.html#register">register</a>();
}
</code></pre>
<hr />
<a name="makeCall"></a>
<h2>Making/receiving audio/video call</h2>
<p>
It's not required to login in order to make audio/video calls but it is highly recommended if you're not using the stack in p2p mode.
</p>
<pre><code>
<a name="makeCallFunc"></a>
var callSession;
var eventsListener = function(e){
console.info('session event = ' + e.type);
}
var makeCall = function(){
callSession = <a href="docgen/symbols/SIPml.Stack.html#newSession">sipStack.newSession</a>('call-audiovideo', {
video_local: document.getElementById('video-local'),
video_remote: document.getElementById('video-remote'),
audio_remote: document.getElementById('audio-remote'),
events_listener: { events: '*', listener: eventsListener } // optional: '*' means all events
});
callSession.call('johndoe');
}
</code></pre>
<p>To accept incoming audio/video call:</p>
<pre><code>
<a name="acceptCallFunc"></a>
var acceptCall = function(<a href="docgen/symbols/SIPml.Stack.Event.html">e</a>){
e.<a href="docgen/symbols/SIPml.Stack.Event.html#newSession">newSession</a>.<a href="docgen/symbols/SIPml.Session.html#accept">accept</a>(); // e.newSession.<a href="docgen/symbols/SIPml.Session.html#reject">reject()</a> to reject the call
}
</code></pre>
<hr />
<a name="screenShare"></a>
<h2>Sharing your screen/desktop</h2>
<p>
Sharing your screen or desktop with any SIP client is just like making a video call and the only difference is the session call type (<b>call-screenshare</b> instead of <i>call-audiovideo</i>). <br />
A screen/desktop sharing session doesn't contain audio stream which means you'll need to make a second audio-only call to speak to the remote party. You don't need to open another page as multi-line is supported. <br />
Please check <a href="https://code.google.com/p/sipml5/wiki/ScreenShare" target=_blank>here</a> for more information about screen/desktop sharing.
<hr />
<a name="sendMessage"></a>
<h2>Send/receive SIP MESSAGE (SMS-like)</h2>
<p>
It's not required to login in order to send SIP MESSAGEs (SMS-like) but it's highly recommended if you're not using the stack in p2p mode.
</p>
<pre><code>
<a name="sendMessageFunc"></a>
var messageSession;
var eventsListener = function(<a href="docgen/symbols/SIPml.Session.Event.html">e</a>){
console.info('session event = ' + e.<a href="docgen/symbols/SIPml.Session.Event.html#type">type</a>);
}
var sendMessage = function(){
messageSession = <a href="docgen/symbols/SIPml.Stack.html#newSession">sipStack.newSession</a>('message', {
events_listener: { events: '*', listener: eventsListener } // optional: '*' means all events
});
messageSession.<a href="docgen/symbols/SIPml.Session.Message.html#send">send</a>('johndoe', 'Pêche à la moule', 'text/plain;charset=utf-8');
}
</code></pre>
<p>To accept incoming SIP MESSAGE:</p>
<pre><code>
<a name="acceptMessageFunc"></a>
var acceptMessage = function(<a href="docgen/symbols/SIPml.Stack.Event.html">e</a>){
e.<a href="docgen/symbols/SIPml.Stack.Event.html#newSession">newSession</a>.<a href="docgen/symbols/SIPml.Session.html#accept">accept</a>(); // e.newSession.<a href="docgen/symbols/SIPml.Session.html#reject">reject</a>(); to reject the message
console.info('SMS-content = ' + e.<a href="docgen/symbols/SIPml.Event.html#getContentString">getContentString</a>() + ' and SMS-content-type = ' + e.<a href="docgen/symbols/SIPml.Event.html#getContentType">getContentType</a>());
}
</code></pre>
<hr />
<a name="publishPresence"></a>
<h2>Publish presence status</h2>
<p>
It's not required to login in order to publish your presence status but it's highly recommended if you're not using the stack in p2p mode. <br />
Presence publication is used to indicate your presence (e.g. <i>online</i>), mood (e.g. <i>happy</i>) or any personal information to your wtachers (most likely the contacts in your address book). In the coming versions the presence
feature will be combined with XCAP to allow developing fully-featured RCS-e applications.<br />
</p>
<pre><code>
<a name="publishPresenceFunc"></a>
var publishSession;
var eventsListener = function(<a href="docgen/symbols/SIPml.Session.Event.html">e</a>){
console.info('session event = ' + e.<a href="docgen/symbols/SIPml.Session.Event.html#type">type</a>);
}
var publishPresence = function(){
publishSession = <a href="docgen/symbols/SIPml.Stack.html#newSession">sipStack.newSession</a>('publish', {
events_listener: { events: '*', listener: eventsListener } // optional: '*' means all events
});
var contentType = 'application/pidf+xml';
var content = '<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n' +
'<presence xmlns=\"urn:ietf:params:xml:ns:pidf\"\n' +
' xmlns:im=\"urn:ietf:params:xml:ns:pidf:im\"' +
' entity=\"sip:bob@example.com\">\n' +
'<tuple id=\"s8794\">\n' +
'<status>\n'+
' <basic>open</basic>\n' +
' <im:im>away</im:im>\n' +
'</status>\n' +
'<contact priority=\"0.8\">tel:+33600000000</contact>\n' +
'<note xml:lang=\"fr\">Bonjour de Paris :)</note>\n' +
'</tuple>\n' +
'</presence>';
// send the PUBLISH request
publishSession.<a href="docgen/symbols/SIPml.Session.Publish.html#publish">publish</a>(content, contentType,{
expires: 200,
sip_caps: [
{ name: '+g.oma.sip-im' },
{ name: '+sip.ice' },
{ name: 'language', value: '\"en,fr\"' }
],
sip_headers: [
{ name: 'Event', value: 'presence' },
{ name: 'Organization', value: 'Doubango Telecom' }
]
});
}
</code></pre>
<a name="subscribePresence"></a>
<h2>Subscribe for presence status</h2>
<p>
Subscription is used to watch the status of a SIP entity. This SIP entity could be contact from your address book, an rls-service, a voice mail, etc.
When the entity status change, the subscriber will be notified using SIP NOTIFY request. <br />
Below, the code shows how to subscribe for <i>johndoe</i>'s presence status and parse the content of the NOTIFY request received from the server. <br />
</p>
<pre><code>
<a name="subscribePresenceFunc"></a>
var subscribeSession;
var eventsListener = function(<a href="docgen/symbols/SIPml.Session.Event.html">e</a>){
console.info('session event = ' + e.<a href="docgen/symbols/SIPml.Session.Event.html#type">type</a>);
if(e.<a href="docgen/symbols/SIPml.Session.Event.html#type">type</a> == 'i_notify'){
console.info('NOTIFY content = ' + e.<a href="docgen/symbols/SIPml.Event.html#getContentString">getContentString</a>());
console.info('NOTIFY content-type = ' + e.<a href="docgen/symbols/SIPml.Event.html#getContentType">getContentType</a>());
if (e.<a href="docgen/symbols/SIPml.Event.html#getContentType">getContentType</a>() == 'application/pidf+xml') {
if (window.DOMParser) {
var parser = new <a href="https://developer.mozilla.org/en-US/docs/DOM/DOMParser">DOMParser</a>();
var xmlDoc = parser ? parser.parseFromString(e.<a href="docgen/symbols/SIPml.Event.html#getContentString">getContentString</a>(), "text/xml") : null;
var presenceNode = xmlDoc ? xmlDoc.getElementsByTagName ("presence")[0] : null;
if(presenceNode){
var entityUri = presenceNode.getAttribute ("entity");
var tupleNode = presenceNode.getElementsByTagName ("tuple")[0];
if(entityUri && tupleNode){
var statusNode = tupleNode.getElementsByTagName ("status")[0];
if(statusNode){
var basicNode = statusNode.getElementsByTagName ("basic")[0];
if(basicNode){
console.info('Presence notification: Uri = ' + entityUri + ' status = ' + basicNode.textContent);
}
}
}
}
}
}
}
}
var subscribePresence = function(to){
subscribeSession = <a href="docgen/symbols/SIPml.Stack.html#newSession">sipStack.newSession</a>('subscribe', {
expires: 200,
events_listener: { events: '*', listener: eventsListener },
sip_headers: [
{ name: 'Event', value: 'presence' }, // only notify for 'presence' events
{ name: 'Accept', value: 'application/pidf+xml' } // supported content types (COMMA-sparated)
],
sip_caps: [
{ name: '+g.oma.sip-im', value: null },
{ name: '+audio', value: null },
{ name: 'language', value: '\"en,fr\"' }
]
});
// start watching for entity's presence status (You may track event type <b>'connected'</b> to be sure that the request has been accepted by the server)
subscribeSession.<a href="docgen/symbols/SIPml.Session.Subscribe.html#subscribe">subscribe</a>(to);
}
</code></pre>
<hr />
<a name="TechnicalHelp"></a>
<h1>Technical Help</h1>
<p>
Please check our <a href="http://code.google.com/p/sipml5/issues/list">issue tracker</a> or <a href="https://groups.google.com/group/doubango">developer group</a> if you have any problem.
</p>
<br />
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<p>© Doubango Telecom 2012 <br />
<i>Inspiring the future</i>
</p>
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