We currently use full renegotiation for audio, video, and screen sharing
reconnections, which involves re-creating transports and signaling channels
from scratch. While effective in some scenarios, this approach is slow and,
especially with outbound cameras and screen sharing, prone to failures.
To counter that, WebRTC provides a mechanism to restart ICE without needing
to re-create the peer connection. This allows us to avoid full renegotiation
and bypass some server-side signaling limitations. Implementing ICE restart
should make outbound camera/screen sharing reconnections more reliable and
faster.
This commit implements the ICE restart procedure for all WebRTC components,
based on bbb-webrtc-sfu >= v2.15.0-beta.0, which added support for ICE restart
requests. This feature is off by default. To enable it, adjust the following
flags:
- `/etc/bigbluebutton/bbb-webrtc-sfu/production.yml`: `allowIceRestart: true`
- `/etc/bigbluebutton/bbb-html5.yml`: `public.kurento.restartIce`
* Refer to the inline documentation; this can be enabled on the client side
per media type.
* Note: The default max retries for audio is lower than for cameras/screen
sharing (1 vs 3). This is because the full renegotiation process for audio
is more reliable, so ICE restart is attempted first, followed by full
renegotiation if necessary. This approach is less suitable for cameras/
screen sharing, where longer retry periods for ICE restart make sense
since full renegotation there is... iffy.
* [backport-20729] just backported and added information to the docs
* [backport-20729] better description
* [backport-20729] prettier documentation on file formats
Co-authored-by: Gustavo Trott <gustavo@trott.com.br>
---------
Co-authored-by: Gustavo Trott <gustavo@trott.com.br>
- Adds a new Help view for unknown error codes
- Correctly detect NotAllowedError (permissions) - they are currently
being treated like unknown errors in the Help modal
- Rephrase NotAllowedError help text; make it more succint and direct
- Rephrase the unknown error help text; make it more succint and direct
- Add error code and message to that view
- Add public.media.audioTroubleshootingLinks to allow referencing KB
links on the Help modal
- See inline docs
* fix(bbb-html5): customHeartbeat would not close stale sessions, +
The [disabled by default] custom heartbeat included in Meteor's server
does not end connections when they are considered unhealthy/stale, which
deviates a bit from the default implementation. See:
https://github.com/bigbluebutton/bigbluebutton/pull/11486.
This commit includes a call to the default heartbeat termination timeout
so sockets are correctly cleaned up when the custom heartbeat is
activated. It also adds a customHeartbeatUseDataFrames config to allow
controlling whether the custom heartbeat should use WS data frames as
valid heartbeats as well - this should only be useful for
testing/debugging purposes and the default behavior (true) is
maintained.
As a side note: this change spun off from an investigation where some
problematic networks were triggering periodic client re-connects due to
the default heartbeat failing. Investigation points to the control
frames being put alongside fragmented WS data frames and the server side
failing to recognize the former - which means pong frames would be missed and
the health check would fail. Since the default heartbeat _does not_
account for data frame traffic (eg DDP payloads), it would shut down the
client's WS even though it was healthy.
The custom heartbeat _does_ account for data frames, which mitigates
that scenario and prevents unecessary reconnections.
* fix(bbb-html5): frontend crash due to undefined vars in customHeartbeat
Meteor frontends may crash when customHeartbeat is enabled
due to an undefined access in the heartbeat`s logger.
Add optional chaining to the session props access so it won`t crash and tune down some log levels around that area.
* Demo changes
* Revert "feat(captions): no longer writes in the pad"
This reverts commit a76de8c458.
* feat(transcriptoin): Add config options for the transcription backend
* feat(transcription): Add autodetect option to cc chevron
* feat(transcription): Move transcription options into settings modal
* feat(transcription): Set transcription options via userdata
* fix(transcription): Correct userdata for settings transcription params
* feat(transcriptions): options to auto enable caption button
* feat(transcriptions): Option to hide old CC pad funcionality
* fix(transcription): Fix PR comments
* fix(transcription): Refactor updateTranscript to prevent null user and make it more readable
* feat(transcription): bbb_transcription_provider can be set via userdata
* fix(transcription): Use base10 for parseInt
* fix(transcriptions): Fix CC language divider when using webspeech
* fix(transcriptions): Use a default pad in the settings instead of hardcoding 'en'
We still need to use a language pad such as 'en', but in the future we can better
separate these systems.
* fix(transcription): Add a special permission for automatic transcription updates to the pad and restore old per user updates permission
* feature(transcriptions): Include transcriptions submenu and locales
* chore: bump bbb-transcription-controller to v0.2.0
* fix(transcription): Add missing menu files
* fix(transcription): Fix transcription provider options in settings.yml
* fix: setting password for bbb-transcription-controller
* build: add gladia-proxy.log for transcription-controller
* fix(transcriptions): Remove transcript splitting and floor logic from akka apps
* fix(captions): Show long utterances as split captions, show multiple speaker captions
* chore: bump bbb-transcription-controller to 0.2.1
---------
Co-authored-by: Anton Georgiev <anto.georgiev@gmail.com>
This is an initial, experimental implementation of the feature proposed in
https://github.com/bigbluebutton/bigbluebutton/issues/14021.
The intention is to phase out the explicit listen only mode with two
overarching goals:
- Reduce UX friction and increase familiarity: the existence of a separate
listen only mode is a source of confusion for the majority of users
Reduce average server-side CPU usage while also making it possible for
having full audio-only meetings.
The proof-of-concept works based on the assumption that a "many
concurrent active talkers" scenario is both rare and not useful. With
that in mind, this including two server-side triggers:
- On microphone inactivity (currently mute action that is sustained for
4 seconds, configurable): FreeSWITCH channels are held (which translates
to much lower CPU usage, virtually 0%). Receiving channels are switched,
server side, to a listening mode (SFU, mediasoup).
* This required an extension to mediasoup two allow re-assigning producers
to already established consumers. No re-negotiation is done.
- On microphone activity (currently unmute action, immediate):
FreeSWITCH channels are unheld, listening mode is deactivated and the
mute state is updated accordingly (in this order).
This is *off by default*. It needs to be enabled in two places:
- `/etc/bigbluebutton/bbb-webrtc-sfu/production.yml` ->
`transparentListenOnly: true`
- End users:
* Server wide: `/etc/bigbluebutton/bbb-html5.yml` ->
`public.media.transparentListenOnly: true`
* Per user: `userdata-bbb_transparent_listen_only=true`
SFU based audio is missing connection timers, which means the join
procedure can go on indefinitely in a couple of scenarios.
Refactor the connection timers added for re-connections in the SFU audio
bridge and make them valid for the first try as well.
Make 1010 errors (connection timeout) retriable when retryThroughRelay
is enabled.
1007 errors are still a large fraction of our overall audio join error
rate. This usually indicates some sort of firewall block or UDP issues
carrier networks. I can't figure out why some scenarios won't trickle
down to relay candidates though - I'm leaning to scenarios where STUN
packets with USE-CANDIDATE are being mangled/lost along the way or
something else that borks the (already fragile) conn checks for ICE-lite
implementations.
Add a new feature called retryThroughRelay which triggers a retry with
iceTransportPolicy=relay whenever audio fails to join with a 1007 error.
The goal is to force relay usage to try and bypass 1007s scenarios that
still happen.
Disabled by default.
Changes enableWakeLock => wakeLock.enabled to follow the pattern used by
other features and wakeLockEnabled => wakeLock. Also make the necessary
code changes to reference this new settings flags correctly.
Adds wake lock feature, which is available only for mobile users using
browser with support to the given API.
When an user using a supported device joins the meeting, a toast is
displayed offering to activate the feature.
Adds a toggle under settings menu to activate/deactivate it.
