On September 19-23 there was the W3C TPAC meeting in Lisbon. Dan will cover some of the highlights of the recent Lisbon WebRTC meeting, including what items are the sticking points, where work is focusing, progress estimates, and thoughts on what might go into the next version of WebRTC after 1.0 is finished. Alex will cover the W3C testing platform: "Test The Web Forward". W3C, unlike IETF, is developing and maintaining a complete test suite for all its JS APIs. No specification is actually accepted by W3C and final without the corresponding test suite. Topics that will be addressed include what this testing platform implements, its status with respect to WebRTC and now it is used by different browser vendors as an indication of their compliance with the standards. As always, we encourage you to submit your general WebRTC related questions beforehand in the Questions & Topics section to make sure we answer them during the session. Event sponsored by WebRTC.Ventures & Blacc Spot Media

1. WebRTC Standards &
Implementation Q&A
Amir
Zmora
TheNewDialTone
Dan
Burnett
StandardsPlay
Alex
Gouaillard
WebRTC by
Dr
Alex
/
Citrix

2. Watch video recording of this session
http://ccst.io/e/webrtcstandards9

3. Session sponsored by
WebRTC.ventures
is
a
custom
design
and
development
shop
dedicated
to
building
WebRTC based
applications
for
web
and
mobile.
We
have
built
end-­‐to-­‐end
broadcast
solutions
for
events
and
entertainment
clients,
telehealth solutions
for
multiple
clients,
live
support
tools,
as
well
as
communication
tools
for
a
variety
of
other
applications. WebRTC.ventures is
a
recognized
development
partner
of
TokBox and
has
also
built
native
WebRTC solutions

4. Session sponsored by
Blacc
Spot
Media is
comprised
of
a
collaborative
team
of
designers,
developers
and
thought
leaders
specializing
in
Web-­‐Real
Time
Communications
(WebRTC).
Blacc Spot
Media
was
founded
in
April
2011
with
the
goal
of
creating
innovative
solutions
using
new
technologies
such
as
WebRTC.
Our
team
works
on
strategic
projects
developing
custom
applications,
enterprise
platforms
and
mobile
applications
for
a
wide
array
of
clients.

5. We use CrowdCast….It’s WebRTC

6. WebRTCStandards.info
Sponsored by

7. About Us
• Amir Zmora • Dan Burnett • Alex Gouaillard

8. Save The Date: Nov 21st
Register Now: http://ccst.io/e/webrtcstandards10
Next Session

9. On The Agenda:
W3C WebRTC JS API Test Platform &
Updates from W3C Lisbon Meeting

10. Updates from W3C Lisbon Meeting

11. The meeting
• 2 days
• 20 active participants, many observers (yes, Apple folks were there!)
• Mostly steady, uncontroversial discussion and progress
• A few contentious issues

12. Major discussion topics
• Queuing and order of operations -­-­ tricky
• Errors – we need to define new error objects beyond what WebIDL supports, both for
createOffer/Answer and IdP
• Permissions – Lots of new Media Capture and Streams text for how indicators will work
• Senders/Receivers/Transceivers – fixing the bugs and edge cases we keep finding
• Certificates – getting fingerprints of certificates
• ICE issues – cleanup of naming and definitions, particularly for RTCIceGatheringState.
Also tricky Trickle ICE end of candidates issue
• Largely status checks: Stats, DTMF, Test Suite(s), Mediacapture-­depth, Mediacapture-­
output
• Agenda, slides, and minutes at https://www.w3.org/2011/04/webrtc/wiki/September_22_-­
_23_2016

13. Tricky stuff
• Queuing and order of operations
pc.addTrack(trackX, stream);
pc.createOffer().then(offer => { ... })
pc.addTrack(trackY, stream);
• Trickle ICE end-­of-­candidates indication
• Many options, none perfect
• Two primary options discussed, but no resolution

14. EoC issue: the way it is today
pc.onicecandidate = function (e) {
signalingChannel.send(JSON.stringify({ "candidate": e.candidate }));;
};;
signalingChannel.onmessage = function (e) {
var message = JSON.parse(e.data);;
pc.addIceCandidate(message.candidate);;
};;
Null
value
means
end
of
candidates
…
but we
need
to
give
the
ufrag

15. EoC issue: one option (modify candidate)
Regular candidate:
{sdpMid: "audio",
candidate: "candidate:... ufrag 1111"}
End of candidates:
{sdpMid: "audio",
candidate: "candidate:... ufrag 1111 trickle done"}
Some
impls.
do
this
already
So
we
could
just
add
to
it
…
but it
might
break
current
code
that
parses
the
candidate

16. EoC issue: another option (new event & method)
Regular candidate event
{candidate: {
sdpMid: "audio",
ufrag: "1111",
candidate: "candidate:..."},
}
.addIceCandidate(
{sdpMid: "audio", ufrag: "1111",
candidate: "..."});;
End of candidates event
{sdpMid: "audio",
ufrag: "1111"}
.endIceCandidate(
{sdpMid: "audio", ufrag: "1111"});;

17. Status updates
• Media Capture and Streams spec
• Permissions stuff is main outstanding topic before another CR, then a rapid PR. We currently
now have a normative dependency on the separate Permissions Specification work L
• WebRTC spec
• Want a first CR before end of year
• More likely is 1st quarter 2017

18. Beyond WebRTC 1.0
• Background PeerConnection processing (likely in ServiceWorkers), needed for
• keeping a connection alive even when the user is not directly engaging in the current tab
• being ready to accept calls on short notice without requiring an open browser tab
• interacting with IoT ‘things’ that may only need a simple data channel, for example, where there
is no need for audio and video at all
• Better control over more "types" of video
• spherical video, stereo video
• augmented reality
• multicast, simulcast, and pluggable codecs
• far-­end camera control
• Improved network handling
• better network interface handoff without call drop, e.g. mobile to WiFi and vice versa
• support for QUIC for faster overall setup
• fuller support for ICE, and support for the improved version of ICE being developed at the IETF.
This may even allow ICE to be implemented via a JS library

19. W3C WebRTC JS API Test Platform

20. Satellite view
Specification
TR
Working
draft
Stable
draft
(Last
Call)
Implementors
feedback
(CR) Standard
(Rec) Test
Suite
WebRTC
1.0:
Real-­‐time
Communication
Between
Browsers 28-­‐Feb-­‐16 N/A Q2
2016? Y
Media
Capture
and
Streams
(getUserMedia) 12-­‐Feb-­‐15 14-­‐Apr-­‐15 19-­‐May-­‐16 Y
MediaStream
Recording 8-­‐Sep-­‐15 N/A N
MediaStream
Image
Capture 27-­‐Jan-­‐15 N/A N
Media
Capture
Depth
Stream
Extensions 26-­‐Feb-­‐16 N/A N
Media
Capture
from
DOM
Elements 19-­‐Feb-­‐15 N/A N
Audio
output
devices
API 10-­‐Feb-­‐15 N/A N
Identifiers
for
WebRTC's
Statistics
API 6-­‐Feb-­‐15 N/A N
Screen
Capture 10-­‐Feb-­‐15 N/A N

21. APIs View
Media
Capture
and
Streams
(getUserMedia) isTested Size Coverage
MediaStream Y 179 95%
MediaStreamTrack Y 512 34%
Media
stream
in
Media
element Y 77 100%
Enumerating
Local
Media
Devices Y 159 45%
GUM Y 281 68%
Constraints N 136 0%
Error
Handling N 100 0%

22. Where do we stand?
(march 2016)

23. WebRTC Testing -­ DIY 1/3 – Small Tools
• Here is a presentation about the state of the art of webrtc testing:
• http://www.slideshare.net/alexpiwi5/2016-­q1-­webrtc-­testing-­state-­of-­the-­art
• you have a couple of diagnostic tools available that can be used/reproduced (always good
to have)
• -­ https://www.netscan.co/
• -­ https://test.webrtc.org/ (source code is here)
• adapter.js has its own testing framework
• -­ https://github.com/webrtc/adapter

24. WebRTC Testing – DIY 2/3 – Interop & system
• the most advanced work, sponsored by IMTC. It allows to tests you app, running with your
infrastructure, across browsers, browser versions, OS, OS versions, ..... The README is
nicely written.
• -­ https://github.com/fippo/testbed

25. WebRTC Testing – DIY 3/3 -­ Native
• For native, everybody use the Google native stack (webrtc.org) with its binding, and the
testing is explained in detail on my blog:
• 1. The build system (here)
• 2. Automatic build with CMake (here)
• 3. How to test lib webrtc (here)
• 4. How to Package / Install lib webrtc (here)
• 5. How to set up build bots for WebRTC (here)
• 6. How to patch automatically lib webrtc (here)
• It is also resumed here (some slides are in japanese):
• http://www.slideshare.net/alexpiwi5/testing-­and-­packaging-­webrtc-­stack

26. ?

27. Save The Date: Nov 21st
Register Now: http://ccst.io/e/webrtcstandards10
Next Session

28. Session sponsored by

29. Thank You
Amir
Zmora
TheNewDialTone
Dan
Burnett
StandardsPlay
Alex
Gouaillard
WebRTC by
Dr
Alex