p2p Video Chat – GSoC Week 3

Lalit Khattar

After finished implementing chat log search last week, I moved on to my next major task – implementing p2p video chat in waartaa.

Introduction

A p2p(peer to peer) plugin-free video/audio Real Time Communication(short for RTC) had always been a nightmare for developers to implement. This was changed few years back with the introduction of WebRTC – an open source, plugin-free, built into browsers technology. Today, there are many web services out there which uses webRTC eg. Bistri.

Implementation

A WebRTC application needs to do several things:

  • Get streaming audio, video or other data.
  • Get network information such as IP addresses and ports, and exchange this with other WebRTC clients (known as peers) to enable connection, even through NATs and firewalls.
  • Coordinate signaling communication to report errors and initiate or close sessions.
  • Exchange information about media and client capability, such as resolution and codecs.
  • Communicate streaming audio, video or data.

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