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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>palava: FOSS P2P-Videoconferences on the web</title>
<meta name="description" content="palava: FOSS P2P-Videoconferences on the web">
<meta name="author" content="Marius Melzer">
<meta name="apple-mobile-web-app-capable" content="yes" />
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<style>
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font-size: 21pt;
line-height: 25pt;
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<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<section>
<h1>palava
<h2>Encrypted P2P-Videoconferences<br> on the web</h2>
<br>
<h3>Marius Melzer</h3>
</section>
</section>
<section>
<section>
<h2>WebRTC</h2>
<h4>new web standard (currently in firefox & chrome)</h4>
<h4>allows p2p-connections between browsers ...</h4>
<h4>... and video/audio streams on top</h4>
</section>
<section>
<img src="images/webrtc-components.png" />
</section>
<section>
<pre><code data-trim contenteditable>
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</code></pre>
</section>
</section>
<section>
<section>
<h2>P2P connection requirements</h2>
<h4>Initialisation over signaling server</h4>
<h4>Exchange of streaming properties over SDP</h4>
<h4>NAT traversal via ICE (STUN server)</h4>
<h4>Interop problems & workarounds</h4>
</section>
</section>
<section>
<section>
<h2>Signaling</h2>
</section>
<section>
<img src="images/signaling-server.png">
</section>
<section>
<img src="images/join.png">
</section>
<section>
<img src="images/offer-answer.png">
</section>
<section>
<img src="images/stun1.png">
</section>
<section>
<img src="images/stun2.png">
</section>
<section>
<img src="images/peerconnection.png">
</section>
</section>
<section>
<section>
<h2>palava software stack<h2>
<h4> completely free & open source</h4>
</section>
<section>
<h2> palava machine</h2>
<h4>our "tracker"</h4>
<h4>room & signaling server</h4>
</section>
<section>
<h2>palava client</h2>
<h4>webrtc wrapper library for video conferencing</h4>
</section>
<section>
<h2>palava portal</h2>
<h4>web plattform using the palava client</h4>
</section>
</section>
<section>
<section>
<h3>Signaling Protocol</h3>
<p class="fragment">A few defined JSON messages</p>
</section>
<section>
<h3>Client → Server</h3><br/>
<p><code>join_room(room_id, status)</code></p>
<p><code>send_to_peer(peer_id, data)</code></p>
<p><code>update_status(status)</code></p>
</section>
<section>
<h3>Server → Client</h3><br/>
<p><code>joined_room(me, peers)</code></p>
<p><code>peer_updated_status(peer_id, peer_status)</code></p>
<p><code>error(id, message)</code></p>
<p><code>shutdown(seconds)</code></p>
</section>
<section>
<h3>Client → Client</h3>
<h4>via <code>send_to_peer</code></h4><br/>
<p><code>offer(sdp)</code></p>
<p><code>answer(sdp)</code></p>
<p><code>ice_candidate(...)</code></p>
</section>
</section>
<section>
<section>
<h2> https://palava.tv</h2>
<h4> one running palava instance</h4>
<h4> video conferences with as many people as your bandwidth allows</h4>
<h4> no registration or login required</h4>
<h4> provides open stun + signaling</h4>
</section>
</section>
<section>
<section>
<h2> who is palava?</h2>
<h4> 4 founders: Jan Lelis, Marius Melzer, Stephan Thamm, Kilian Ulbrich</h4>
<h4> non-profit organisation</h4>
<h4> 13 members</h4>
</section>
<section>
<h2> How you can help us?</h2>
<h4> Hack on it!</h4>
</section>
<section>
<h2>Code</h2>
<a href="https://github.com/palavatv" style="white-space:nowrap">https://github.com/palavatv</a>
</section>
<section>
<h2>Setting up the components</h2>
<a href="https://blog.palava.tv/2013/12/How_to_host_your_own_WebRTC_Video_Conferencing_on_ubuntu/" style="white-space:nowrap;font-size:19pt">https://blog.palava.tv/2013/12/How_to_host_your_own_WebRTC_Video_Conferencing_on_ubuntu/</a>
</section>
<section>
<h2>Basic usage of palava client library</h2>
<a href="https://gist.github.com/payload/8073770" style="white-space:nowrap">https://gist.github.com/payload/8073770</a>
</section>
<section>
<h4>You can use your own signaling & stun (2 ips!) or ours!</h4>
</section>
<section>
<h2>Ideas</h2>
<h4>"Franchising"</h4>
</section>
<section>
<h2>Ideas</h2>
<h4>Easy Deployment</h4>
</section>
<section>
<h2>Ideas</h2>
<h4>More decentralisation</h4>
</section>
<section>
<h2>Ideas</h2>
<h4>Mobile</h4>
</section>
<section>
<h2>Ideas</h2>
<h4>Features: Text chat, Screen sharing, "instant messaging"?</h4>
</section>
<section>
<h2> How can you help?</h2>
<h4> Coding</h4>
<h4> Designing</h4>
<h4> Money (appeal for funds in january)</h4>
<h4> Spreading the word!</h4>
</section>
</section>
<section>
<section>
<h2>Get in contact with palava</h2>
<h4><a href="https://twitter.com/palavatv">@palavatv</a></h4>
<h4><a href="https://blog.palava.tv" style="white-space:nowrap">https://blog.palava.tv</a></h4>
<h4>Newsletter ("Get updates")</h4>
<h4>Email: contact@palava.tv</h4>
</section>
<section>
<h2>Get in contact with me</h2>
<h4><a href="https://twitter.com/faraoso">@faraoso</a></h4>
<h4>Email & Jabber: marius@rasumi.net</h4>
</section>
</section>
</div>
</div>
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