Reland "Surface ICE candidates that match an updated candidate filter."

This is a reland of cd8d1cf68e4eeed71fba51c97006a91bfd41813d

Original change's description:
> Surface ICE candidates that match an updated candidate filter.
> 
> After this change an ICE agent can surface candidates that do not match
> the previous filter but are allowed by the updated one. The candidate
> filter, as part of the internal implementation in the ICE transport,
> manifests the RTCIceTransportPolicy field in RTCConfiguration.
> 
> This new feature would allow an ICE agent to gather new candidates when
> the transport policy changes from e.g. 'relay' to 'all' without an ICE
> restart.
> 
> A caveat in the current implementation remains, and a candidate can
> surface multiple times if the transport policy, or the candidate filter
> directly, performs multiple transitions from a value that disallows to
> one that allows the underlying candidate type. For example, if the
> transport policy is updated by 'all' -> 'relay' -> 'all', the same host
> candidate can surface after the second update.
> 
> 
> Bug: webrtc:8939
> Change-Id: I92c2e07dafab225c702c5de28f47958a0d3270cc
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132282
> Commit-Queue: Qingsi Wang <qingsi@webrtc.org>
> Reviewed-by: Jeroen de Borst <jeroendb@webrtc.org>
> Reviewed-by: Seth Hampson <shampson@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#27674}

Bug: webrtc:8939
Change-Id: I9c32b1ea05028ecd937ab4912779dd958faf734f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/133582
Reviewed-by: Seth Hampson <shampson@webrtc.org>
Reviewed-by: Jeroen de Borst <jeroendb@webrtc.org>
Commit-Queue: Qingsi Wang <qingsi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27694}
13 files changed
tree: 8a82bbda3ee5f06a66079ac87b4a6816bbe9b9c4
  1. .clang-format
  2. .git-blame-ignore-revs
  3. .gitignore
  4. .gn
  5. .vpython
  6. AUTHORS
  7. BUILD.gn
  8. CODE_OF_CONDUCT.md
  9. DEPS
  10. ENG_REVIEW_OWNERS
  11. LICENSE
  12. OWNERS
  13. PATENTS
  14. PRESUBMIT.py
  15. README.chromium
  16. README.md
  17. WATCHLISTS
  18. abseil-in-webrtc.md
  19. api/
  20. audio/
  21. build_overrides/
  22. call/
  23. codereview.settings
  24. common_audio/
  25. common_types.h
  26. common_video/
  27. crypto/
  28. data/
  29. examples/
  30. license_template.txt
  31. logging/
  32. media/
  33. modules/
  34. native-api.md
  35. p2p/
  36. pc/
  37. presubmit_test.py
  38. presubmit_test_mocks.py
  39. pylintrc
  40. resources/
  41. rtc_base/
  42. rtc_tools/
  43. sdk/
  44. stats/
  45. style-guide.md
  46. style-guide/
  47. system_wrappers/
  48. test/
  49. tools_webrtc/
  50. video/
  51. webrtc.gni
  52. whitespace.txt
README.md

WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.

The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others.

Development

See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.

Authoritative list of directories that contain the native API header files.

More info