WebRTC for peer-to-peer data messaging

WebRTC is known as the technology enabling peer-to-peer audio and video calls in browsers. But its less explored feature is data channels. Data channels allow passing arbitrary data between web applications. In this session we'll explore WebRTC basics and code review a blockchain app that employs data channels for peer-to-peer nodes communication.

Transcript

1. WebRTC for P2P data messaging Anton Moiseev Farata Systems a@antonmoiseev.com
4. Centralized network 4
5. Centralized network WS Blockchain node Blockchain server WS Blockchain node 5
6. Decentralized network WS Blockchain node Blockchain server WS Blockchain node Signaling WebRTC 6
7. Decentralized network 7
8. How to connect from one browser to another? 8
9. WebRTC • Set of protocols and APIs for real-rime communication • W3C and IETF standard • Supported by all major browser vendors • Features • Media streams (audio and video) • Data channels 9
10. WebRTC History 2011 First draft of spec First cross-browser call First cross-browser data message 2013 02/2014 07/2014 First real-world app adoption (Hangouts) 10
11. Notable Apps using WebRTC • Google Hangouts • Facebook Messenger • Discord • GoToMeeting Source: http://bit.ly/webrtc_apps 11
12. How to connect via WebRTC Signaling Internet 12
13. How to connect via WebRTC Signaling Peers Peers Internet 12
14. How to connect via WebRTC Signaling Peers Peers Peer-to-peer Internet 12
15. STUN Signaling Peers Peers NAT NAT Internet 13
16. STUN Signaling Peers Peers STUN NAT NAT Internet 13
17. STUN Signaling Peers Peers STUN NAT NAT Peer-to-peer Internet 13
18. TURN Signaling Peers Peers STUN NAT NAT TURN Internet 14
19. TURN Signaling Peers Peers STUN NAT NAT TURN Internet ICE 14
20. Demo #1 Establishing WebRTC connection 15
22. Demo #2 Simple peer-to-peer network 17
25. Demo #3 Blockchain peer-to-peer network 20
27. Thank you! • Slides - http://bit.ly/34yBVWQ • Code samples - http://bit.ly/2WJDBdn