WEBRTC INTEGRATION

OPTIONS

Tim Panton, Westhawk Ltd – @steely_glint

Demo – call a mobile

Demo calls my mobile from a browser

Not everyone wants to interop

Games

Dating sites

Whiteboards

OTT

Mayday

For these sites a home grown signaling protocol may be simplest/best.

(highest value apps will be in this class)

Problem statement

HTTP(S) transport

RIA 2.0 media

Encrypted

Opus

VP8 ?

SIP

RTP

Cleartext

Ulaw (729, amr?)

H263/4

WebRTC Carrier IMS

Unless and until those incompatibilities go away.

Gateway needed ?

HTTP to SIP – SIP in the Browser

Use javascript to build SIP messages and protocol

Wrap in HTTP (or Web-sockets)

Send to webserver

Webserver unwraps and forwards to IMS

SIP in the browser

Browser

JS SIP IMS

WebSocket

Server SIP in HTTP

UDP

SIP

Problems

You still have a gateway – albeit a thin one.

You have javascript injecting SIP messages into IMS

The SDP isn’t compatible

The media isn’t compatible

What is Early media in a browser ?

You have your SIP credentials out on the internet.

SBC

SIP in the browser with SBC

Browser

JS SIP IMS

WebSocket

Server SIP in HTTP

UDP

SIP UDP

SIP

DMZ

Remaining Problems

The media isn’t compatible

What is Early media in a browser ?

You have SIP credentials out on the internet.

SBC

SIP in the browser with SBC, Media

Gateway and Registration proxy

Browser

JS SIP IMS

WebSocket

Server SIP in HTTP

UDP

SIP UDP

SIP

DMZ

Media

GW RIA 2.0 RTP ulaw

Proxy

Reg

REST in the browser

Use web ‘RESTful’ commands

Sent from the browser

To a webRTC gateway

Gateway generates the SIP IMS needs

Gateway controls transcode resource

REST in the browser with Gateway

Browser

app IMS

WebRTC

gateway REST/HTTP UDP

SIP

DMZ

Problems

Need to map from web Identity to SIP

Select a web identity provider

webRTC gateways don’t scale (yet)

No standard for REST messages

Home rolled protocol (may have holes)

XMPP in the browser with SBC

Browser

app IMS

WebRTC

gateway

XMPP/BOSH/H

TTP UDP

SIP

DMZ

Problems

Need to map from web Identity to SIP

Select a web identity provider

webRTC gateways don’t scale (yet)

More complex than necessary

Needless protocol mapping?

However

BOSH is tested

XMPP well defined and federates

WebRTC isn’t mobile first yet.

Did we forget mobile?

WebRTC on Mobile

Browser isn’t a natural interface

WebRTC codecs are heavy on battery

No native App friendly API (yet)

SIP (if used) not an efficient mobile protocol

Audio hardware on android variable

Both Chrome and firefox on Android support webRTC

Expect to see RIA 2.0 with native APIs

DTLS can carry a certificate – but which one

should be used?

Identity.

Multiple identities on the web

When I call from a webpage, which identity do I want

to present?

E164 to the shop

Facebook Id to my fb friends

Anon to the game

Pseudo id to dating site

Do I ever want to present facebook ID to G+ users?

Demo

Phono using a Jira identity. (perhaps)