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auto-session-establishment.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Auto Session Establishment using DataChannel.js</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<link rel="author" type="text/html" href="https://plus.google.com/+MuazKhan">
<meta name="author" content="Muaz Khan">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<link rel="stylesheet" href="https://cdn.webrtc-experiment.com/style.css">
<script>
var hash = window.location.hash.replace('#', '');
if (!hash.length) {
location.href = location.href + '#' + ((Math.random() * new Date().getTime()).toString(36).toUpperCase().replace( /\./g , '-'));
location.reload();
}
</script>
<style>
section.user-id {
float: left;
overflow: hidden;
padding-left: 0;
padding-right: 1em;
text-align: right;
width: 5em;
}
section.message {
border-left: 1px solid #CCCCCC;
margin-left: 4em;
overflow: hidden;
padding-left: 1em;
}
</style>
<!-- for HTML5 el styling -->
<script>
document.createElement('article');
document.createElement('footer');
</script>
<script src="https://cdn.webrtc-experiment.com/DataChannel.js"> </script>
<script src="https://cdn.webrtc-experiment.com/socket.io.js"> </script>
</head>
<body>
<article>
<header style="text-align: center;">
<h1>Auto Session Establishment using <a href="https://github.com/muaz-khan/DataChannel" target="_blank">DataChannel.js</a></h1>
<p>
<a href="https://www.webrtc-experiment.com/">HOME</a>
<span> © </span>
<a href="http://www.MuazKhan.com/" target="_blank">Muaz Khan</a>
.
<a href="http://twitter.com/WebRTCWeb" target="_blank" title="Twitter profile for WebRTC Experiments">@WebRTCWeb</a>
.
<a href="https://github.com/muaz-khan?tab=repositories" target="_blank" title="Github Profile">Github</a>
.
<a href="https://github.com/muaz-khan/DataChannel/issues?state=open" target="_blank">Latest issues</a>
.
<a href="https://github.com/muaz-khan/DataChannel/commits/master" target="_blank">What's New?</a>
</p>
</header>
<div class="github-stargazers"></div>
<blockquote style="background: #f3b7b7;border: 5px solid black;border-radius: 5px;">
This demo does NOT works anymore. Please check this one instead: <br>
<a href="https://www.webrtc-experiment.com/DataChannel/">https://www.webrtc-experiment.com/DataChannel/</a>
</blockquote>
<table style="border-left: 1px solid black; width: 100%;">
<tr>
<td>
<h2 style="display: block; font-size: 1em; text-align: center;">Text Chat</h2>
<div id="chat-output"></div>
<input type="text" id="user-id" style="font-size: 1.2em; margin-right: 0; width: 5em;" placeholder="all"
disabled title="Enter user-id to send direct messages.">
<input type="text" id="chat-input" style="font-size: 1.2em; margin-left: -.5em; width: 18em;"
placeholder="chat message" disabled>
</td>
<td style="background: white; border-left: 1px solid black;">
<h2 style="display: block; font-size: 1em; text-align: center;">Share Files</h2>
<input type="file" id="file" disabled>
<div id="file-progress"></div>
</td>
</tr>
</table>
<script>
var channel = new DataChannel(location.hash.substr(1) || 'auto-session-establishment');
// https://github.com/muaz-khan/WebRTC-Experiment/tree/master/socketio-over-nodejs
var SIGNALING_SERVER = 'https://webrtcweb.com:9559/';
channel.openSignalingChannel = function(config) {
var channel = config.channel || this.channel || 'default-namespace';
var sender = Math.round(Math.random() * 9999999999) + 9999999999;
io.connect(SIGNALING_SERVER).emit('new-channel', {
channel: channel,
sender : sender
});
var socket = io.connect(SIGNALING_SERVER + channel);
socket.channel = channel;
socket.on('connect', function () {
if (config.callback) config.callback(socket);
});
socket.send = function (message) {
socket.emit('message', {
sender: sender,
data : message
});
};
socket.on('message', config.onmessage);
};
channel.onmessage = function(data, userid, latency) {
console.debug(userid, 'posted', data);
appendDIV(data, userid);
console.log('latency:', latency, 'ms');
};
channel.onopen = function() {
if (document.getElementById('chat-input')) document.getElementById('chat-input').disabled = false;
if (document.getElementById('file')) document.getElementById('file').disabled = false;
if (useridBox) useridBox.disabled = false;
};
channel.onFileProgress = function(packets, uuid) {
appendDIV(uuid + ': ' + (
packets.sent
? (packets.sent + ' sent')
: (packets.received + ' received')
) + ' / ' + packets.remaining + ' remaining', 'file', fileProgress);
};
channel.onFileSent = function(file) {
appendDIV(file.name + ' sent.', 'file', fileProgress);
};
channel.onFileReceived = function(fileName) {
appendDIV(fileName + ' received.', 'file', fileProgress);
};
document.getElementById('file').onchange = function() {
var file = this.files[0];
channel.send(file);
};
var chatOutput = document.getElementById('chat-output'),
fileProgress = document.getElementById('file-progress');
function appendDIV(data, userid, parent) {
var div = document.createElement('div');
if (parent) div.innerHTML = data;
else {
div.innerHTML = '<section class="user-id" contenteditable title="Use his user-id to send him direct messages or throw out of the room!">' + userid + '</section>'
+ '<section class="message" contenteditable>' + data + '</section>';
}
if (!parent) chatOutput.appendChild(div, chatOutput.firstChild);
else fileProgress.appendChild(div, fileProgress.firstChild);
div.tabIndex = 0;
div.focus();
chatInput.focus();
}
var chatInput = document.getElementById('chat-input');
var useridBox = document.getElementById('user-id');
chatInput.onkeypress = function(e) {
if (e.keyCode !== 13 || !this.value) return;
if (useridBox.value.length) {
var user = channel.channels[useridBox.value];
if (user) user.send(this.value);
else return alert('No such user exists.');
} else channel.send(this.value);
appendDIV(this.value, 'Me');
this.value = '';
this.focus();
};
/* users presence detection */
channel.onleave = function(userid) {
var message = 'A user whose id is ' + userid + ' left you!';
appendDIV(message, userid);
console.warn(message);
};
// channel.leave( userid ); --- eject a user
// channel.leave(); --- leave the room yourself!
</script>
<br/>
<br/>
<h2>Getting started with WebRTC <a href="https://github.com/muaz-khan/DataChannel"
target="_blank">DataChannel</a></h2>
<pre>
<script src="https://cdn.webrtc-experiment.com/DataChannel.js"></script>
<script>
var channel = new <strong>DataChannel</strong>('default-channel');
// to send text/data or file
channel.<strong>send</strong>(file || data || 'text');
</script>
</pre>
<br/><br/>
<h2>Features:</h2>
<ol>
<li>Send file directly — of any size</li>
<li>Send text-message of any length</li>
<li>Send data directly</li>
<li>Simplest syntax ever! Same like WebSockets.</li>
<li>Supports fallback to socket.io/websockets/etc.</li>
<li>Auto users' presence detection</li>
<li>Allows you eject any user; or close your entire data session</li>
</ol>
<br/>
<br/>
<h2>Send direct messages!</h2>
<p>In many-to-many data session; you can share direct messages or files between specific users:</p>
<pre>
channel.channels[userid].send(file || data || 'text message');
</pre>
<h2>Detect users' presence</h2>
<p>To be alerted if a user leaves your room:</p>
<pre>
channel.onleave = function(userid) {
// remove that user's photo/image using his user-id
};
</pre>
<br/>
<br/>
<h2>Manually eject a user or close your data session</h2>
<pre>
channel.leave(userid); // throw a user out of your room!
channel.leave(); // close your own entire data session
</pre>
<p>Following things will happen if you are a room owner and you tried to close your data session using <code>channel.leave()</code>:
</p>
<ol>
<li>The entire data session (i.e. all peers, sockets and data ports) will be closed.
<small>(from each and every user's side)</small>
</li>
<li>All participants will be alerted about room owner's (i.e. yours) action. They'll unable to send any single
message over same room because everything is closed!
</li>
</ol>
<h2>Note</h2>: DataChannel.js will never "auto" reinitiate the data session.
<br/>
<br/>
<h2>Additional:</h2>
<pre>
<script>
// to be alerted when data ports get open
channel.<strong>onopen</strong> = function(userid) {
// user.photo.id = userid; ---- see "onleave" and "leave" above ↑
// direct messages!
channel.channels[userid].send(file || data || 'text message');
}
// to be alerted when data ports get new message
channel.<strong>onmessage</strong> = function(message, userid) {
// send direct message to same user using his user-id
channel.channels[userid].send('cool!');
}
// show progress bar!
channel.<strong>onFileProgress</strong> = function (packets) {
// packets.remaining
// packets.sent
// packets.received
// packets.length
};
// on file successfully sent
channel.<strong>onFileSent</strong> = function (file) {
// file.name
// file.size
};
// on file successfully received
channel.<strong>onFileReceived</strong> = function (fileName) {};
</script>
</pre>
<br/>
<br/>
<h2>Errors Handling</h2>
<pre>
<script>
// error to open data ports
channel.<strong>onerror</strong> = function(event) {}
// data ports suddenly dropped
channel.<strong>onclose</strong> = function(event) {}
</script>
</pre>
<br/>
<br/>
<h2>Use your own socket.io for signaling</h2>
<pre>
<script>
// by default socket.io is used for signaling; you can override it
var channel = new <strong>DataChannel</strong>('default-channel', {
openSignalingChannel: function(config) {
var socket = io.connect('http://your-site:8888');
socket.channel = config.channel || this.channel || 'default-channel';
socket.on('message', config.onmessage);
socket.send = function (data) {
socket.emit('message', data);
};
if (config.onopen) setTimeout(config.onopen, 1);
return socket;
}
});
</script>
</pre>
<br/>
<br/>
<section style="border: 1px solid rgb(189, 189, 189); border-radius: .2em; margin: 1em 3em;">
<h2 id="feedback" style="border-bottom: 1px solid rgb(189, 189, 189); padding: .2em .4em;">Feedback</h2>
<div>
<textarea id="message"
style="border: 1px solid rgb(189, 189, 189); height: 8em; margin: .2em; outline: none; resize: vertical; width: 98%;"
placeholder="Have any message? Suggestions or something went wrong?"></textarea>
</div>
<button id="send-message" style="font-size: 1em;">Send Message</button>
</section>
<section class="experiment own-widgets latest-commits">
<h2 class="header" id="updates" style="color: red; padding-bottom: .1em;"><a href="https://github.com/muaz-khan/WebRTC-Experiment/commits/master" target="_blank">Latest Updates</a></h2>
<div id="github-commits"></div>
</section>
</article>
<a href="https://github.com/muaz-khan/DataChannel" class="fork-left"></a>
<footer>
<p>
<a href="https://www.webrtc-experiment.com/">WebRTC Experiments</a>
© <a href="https://plus.google.com/+MuazKhan" rel="author" target="_blank">Muaz Khan</a>
<a href="mailto:muazkh@gmail.com" target="_blank">muazkh@gmail.com</a>
</p>
</footer>
<script src="https://cdn.webrtc-experiment.com/commits.js"> </script>
</body>
</html>