ApiRTC Training

Goals and presentation

Acquire the fundamentals of WebRTC architecture, protocols and associated software technologies. Understand WebRTC by theoretical analyzes of varied use-cases, and experimental work on platform. Get an introduction to its potential in term of new services.

WebRTC is a project initiated by the W3C and the IETF, whose objective is to achieve real-time mutimedia communications between web browsers. By introducing a native convergence of synchronous/asynchronous communication services, landline/ mobile, voice/data… This new approach made the web the natural support and definitively any professional or public communication service.

Participants and requirements

• Computer and/or network engineers, developers of telecommunications services, web developers, technical managers.
• Knowledge of network protocols TCP/IP,HTTP,HTML et JavaScript languages are required to take better advantage of training.

Program

Introduction

• WebRTC origins and history
• WebRTC Standardization
• Use-cases and deployments

Technical description of WebRTC

WebRTC support (browsers, devices, mobile …)

WebRTC APIs

• MediaStream – getUserMedia
  • API explanation with Web sample
  • Media devices acceptation: HTTPS
  • Media constraints usage (Video resolution, QoS…)
  • Media devices selection
  • Screensharing
• Peerconnection
  • Datachannel

SDP – Session description

• Peer-to-Peer call sample with ApiRTC: Media routing on a local network
• Network capture analyses and SDP exchange
• offer / answer/ candidates

DTLS – SRTP : Protocoles

DTLS – SCTP : Protocoles

Encryptions

• Keys exchanges description s et analyse des paramètres dans les offres SDP

Audio, video and DTMF

Audio and video codecs in WebRTC – OPUS audio codec

Network address Traversal – Media communication with Firewall

• STUN, TURN, ICE: protocols description
• SDP description (offer / answer/ candidates)
• TrickleIce mechanism

WebRTC issues and how ApiRTC will help in your deployment

• Signalling
• API evolutions
• Browser interoperability
• Restrictive firewall traversal

Technical description of ApiRTC

This part of the training includes practical work on platform for use-case analysis and development of a service.

Browser compatibility

ApiRTC platform architecture description (SaaS – On-premise deployment)

ApiRTC Library architecture description

Starting with ApiRTC

• apiKey / apiCCId
• events management
• Version management
• Log management

ApiRTC Dashboard description

Offline features (UserAgent: Whiteboard…)

Signalling

• ApiRTC connexion (Long-polling and WebSocket)
• Disconnection management / retry
• Presence group management / userData

Calls management (tutorial 3)

• Audio / video call
• Error management
• Call end management
• Safari
• Hangup
• Mute
• Accept/Refuse call – (tutorial 4)
• Media Device selection – (tutorial 8)
• Resolution configuration – (tutorial 9)
• Recording calls – (tutorial 7)
• External stream usage: Stream tutorial
• Disconnection management / retry during calls
  • Call hand over with/without network change
• Call Forking

Media routing

• ApiRTC media routing mode sample
• Restrictive firewall traversal

Conference calls – (tutorial 12 + record tutorial 15)

• Media routing with ApiRTC in conference: P2P / SFU
• Quality of service (QoS) adaptation mechanisms

Chat with history management: Chat sample

Group Chat

SendData usage:  JSON data transfer

File transfer (tutorial 14 + DataChannel sample)

Datachannel to server

Whiteboard (tutorial 13)

• Disconnection management
• Whiteboard hand over with/without network change

Video pointer sharing

Call establishment with PSTN

• SIP Trunk interconnection for call and conference access

Security aspects on ApiRTC

• Media flows – DTLS/SRTP
• Datachannel flows – DTLS/SCTP
• Users authentication

WebRTC monitoring tool:

• Browser tools : Chrome / Firefox
  • WebRTC QoS Statistics display: bandwidth, delay, packet lost, jitter…
• Diagnostic tools :
  • Precall test
  • WebRTC test

Summary and conclusion

Duration

2 days-training
2 000€
Up to 5 participants

Person in charge