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<!--
> Muaz Khan - https://github.com/muaz-khan
> MIT License - https://www.webrtc-experiment.com/licence/
> Documentation - https://github.com/muaz-khan/WebRTC-Experiment/tree/master/DataChannel
-->
<!DOCTYPE html>
<html lang="en">
<head>
<title>DataChannel.js » A WebRTC Library for Data Sharing</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">
<style>
#chat-output div, #file-progress div {
border: 1px solid black;
border-bottom: 0;
padding: .1em .4em;
}
input {
border: 1px solid black;
font-family: inherit;
font-size: 1em;
margin: .1em .3em;
outline: none;
padding: .1em .2em;
width: 97%;
}
#chat-output, #file-progress {
margin: 0 0 0 .4em;
max-height: 12em;
overflow: auto;
}
</style>
<script>
document.createElement('article');
document.createElement('footer');
</script>
<!-- DataChannel.js library-->
<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>
<a href="https://github.com/muaz-khan/DataChannel" target="_blank">DataChannel.js</a>
» A WebRTC Library for Data Sharing
</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>
<!-- just copy this <section> and next script -->
<section class="experiment">
<section>
<h2 style="border: 0; padding-left: .5em;">Open New DataChannel Connection</h2>
<button id="open-channel">Open</button>
</section>
<table style="width: 100%;" id="channels-list"></table>
<table style="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="chat-input" style="font-size: 1.2em;" placeholder="chat message" disabled>
</td>
<td style="background: white;">
<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>
</section>
<script>
var channel = new DataChannel(); // DataChannel.js
// https://github.com/muaz-khan/WebRTC-Experiment/tree/master/socketio-over-nodejs
var SIGNALING_SERVER = 'https://socketio-over-nodejs2.herokuapp.com:443/';
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);
};
// "ondatachannel" is fired for each new data channel
channel.ondatachannel = function(channel00) {
var alreadyExist = document.getElementById(channel00.id);
if (alreadyExist) return;
var tr = document.createElement('tr');
tr.setAttribute('id', channel00.owner);
tr.innerHTML = '<td>' + channel00.id + '</td>' +
'<td><button class="join" id="' + channel00.id + '">Join</button></td>';
channelsList.insertBefore(tr, channelsList.firstChild);
// when someone clicks table-row; joining the relevant data channel
tr.onclick = function() {
// manually joining a data channel
channel.join({
id: this.querySelector('.join').id,
owner: this.id
});
channelsList.style.display = 'none';
};
};
// a text message or data
channel.onmessage = function(data, userid, latency) {
appendDIV(data);
console.debug(userid, 'posted', data);
console.log('latency:', latency, 'ms');
};
// on data connection gets open
channel.onopen = function() {
if (document.getElementById('chat-input')) document.getElementById('chat-input').disabled = false;
if (document.getElementById('file')) document.getElementById('file').disabled = false;
if (document.getElementById('open-channel')) document.getElementById('open-channel').disabled = true;
};
// sending/receiving file(s)
// channel.autoSaveToDisk = false;
channel.onFileProgress = function(packets, uuid) {
appendDIV(uuid + ': ' + packets.remaining + '..', 'file', fileProgress);
};
channel.onFileSent = function(file) {
appendDIV(file.name + ' sent.', fileProgress);
};
channel.onFileReceived = function(fileName) {
appendDIV(fileName + ' received.', fileProgress);
};
document.getElementById('file').onchange = function() {
channel.send(this.files[0]);
};
var chatOutput = document.getElementById('chat-output'),
fileProgress = document.getElementById('file-progress');
function appendDIV(data, parent) {
var div = document.createElement('div');
div.innerHTML = data;
if (!parent) chatOutput.insertBefore(div, chatOutput.firstChild);
else fileProgress.insertBefore(div, fileProgress.firstChild);
div.tabIndex = 0;
div.focus();
chatInput.focus();
}
var chatInput = document.getElementById('chat-input');
chatInput.onkeypress = function(e) {
if (e.keyCode !== 13 || !this.value) return;
appendDIV(this.value);
// sending text message
channel.send(this.value);
this.value = '';
this.focus();
};
// users presence detection
channel.onleave = function(userid) {
var message = 'A user whose id is ' + userid + ' left you!';
appendDIV(message);
console.warn(message);
};
var channelsList = document.getElementById('channels-list');
document.getElementById('open-channel').onclick = function() {
this.disabled = true;
channel.open();
};
// searching for existing channels
channel.connect();
</script>
<section class="experiment">
<h2 class="header">DataChannel.js Features:</h2>
<ol>
<li>Direct messages — to any user using his `user-id`</li>
<li>Eject/Reject any user — using his `user-id`</li>
<li>Leave any room (i.e. data session) or close entire session using `leave` method</li>
<li>File size is limitless!</li>
<li>Text message length is limitless!</li>
<li>Size of data is also limitless!</li>
<li>Fallback to socket.io/websockets/etc.</li>
<li>Users' presence detection using `onleave`</li>
<li>Latency detection</li>
<li>Multi-longest strings/files concurrent transmission</li>
</ol>
</section>
<section class="experiment">
<h2 class="header">How to use DataChannel.js?</h2>
<pre>
<script src="https://cdn.webrtc-experiment.com/DataChannel.js"> </script>
<input type="text" id="chat-input" disabled
style="font-size: 2em; width: 98%;"><br />
<div id="chat-output"></div>
<script>
var chatOutput = document.getElementById('chat-output');
var chatInput = document.getElementById('chat-input');
chatInput.onkeypress = function(e) {
if (e.keyCode != 13) return;
channel.send(this.value);
chatOutput.innerHTML = 'Me: ' + this.value + '<hr />'
+ chatOutput.innerHTML;
this.value = '';
};
</script>
<script>
var channel = new DataChannel('Session Unique Identifier');
channel.onopen = function(userid) {
chatInput.disabled = false;
chatInput.value = 'Hi, ' + userid;
chatInput.focus();
};
channel.onmessage = function(message, userid) {
chatOutput.innerHTML = userid + ': ' + message + '<hr />'
+ chatOutput.innerHTML;
};
channel.onleave = function(userid) {
chatOutput.innerHTML = userid + ' Left.<hr />'
+ chatOutput.innerHTML;
};
</script>
</pre>
</section>
<section class="experiment">
<h2 class="header">Use your own socket.io for signaling</h2>
<pre>
<script>
// by default socket.io is used for signaling; you can override it
channel.<strong>openSignalingChannel</strong> = 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>
</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/DataChannel/commits/master" target="_blank">Latest Updates</a></h2>
<div id="github-commits"></div>
</section>
<section class="experiment">
<h2 class="header" id="feedback">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><small style="margin-left: 1em;">Enter your email too; if you want "direct" reply!</small>
</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>
window.useThisGithubPath = 'muaz-khan/DataChannel';
</script>
<!-- commits.js is useless for you! -->
<script src="https://cdn.webrtc-experiment.com/commits.js" async> </script>
</body>
</html>