MediaStreamTrack getConstraints on Safari returns an empty object.
Enable device selection on Safari.

Make sure we don't have a=simulcast lines on the sendonly m-lines in the remote description

no longer required as of Chrome 84.0.4108.0 and has been merged into M83 as well.

similar to #1095 use a black keyframe instead of displaying a potentially
unencrypted stream. This was again captured with a modified version of
the webrtc sample, additional logging and a resolution of 320x180

If ICE config object gets modified while there's any native
PeerConnection instance holding a reference, it will cause
an exception about final object being modified.

It happens when trying to reconnect XMPP Websocket on RN and
is caused by the fact that new TURN config is fetched after
the connection is re-established.

This handles decryption errors for audio differently than the
current version. Instead of forwarding horrible noise to the decoder,
replace the bytes with magic opus bytes for silence:
  0xd8fffe

Those bytes were captured on a modified version of
  https://webrtc.github.io/samples/src/content/peerconnection/endtoend-encryption/
with more dumping and after disabling the track.

If user experiences any failed reconnect during the entire
session, even if followed by a success, then
the "connectionFailed" flag will trigger
JitsiConnectionEvents.CONNECTION_FAILED on hang up while
processing the disconnected transition.

Get rid of the experimental flag for simulcast support, update js-utils for detecting Edge on Android

Trigger renegotiation only for plan-b when tracks are muted or unmuted

Enabled desktop sharing and discontinue support for Safari versions prior to 12.1, i.e., the ones with no VP8 support

Co-authored-by: Saúl Ibarra Corretgé <saghul@jitsi.org>

The 'searchParams' are not implemented on react-native.

The LipSyncHack is currently broken in Jicofo and
will lead to unstable behavior.

Switch to using ontrack for remote tracks, re-use mids/transceivers when remote sources are removed and added.

Prevents from calling disconnect on the Strophe
connection if it already has been called or
not connected.

When modifying the room protection (setting or unsetting a password), the muc#roomconfig_passwordprotectedroom should always be defined. This fixes issue #512.

Some devies may not be able to satisfy it and gUM will fail. Tested with a
crappy old camera which can only do VGA resolution at 4/3 aspect ratio.

Co-Authored-By: Saúl Ibarra Corretgé <s@saghul.net>

Trigger renegotation only when negotiationneeded event is fired on the browser.
Do not disable simulcast for screensharing in unified plan.
Fix the order of the simulcast streams for Firefox

Use unique session id per TPC.
Translate a=rid to Jingle only when simulcast through RIDs, i.e., ssrc-less simulcast is supported

Send conference.join event only after the peer connection is created.
This way we won't send events for lonely calls.

Copy/paste mistake - there's no such thing as this.connection in
the XmppConnection. Hard to track down because no error is logged.

Either connect or attach can be used to initiate the connection.

Use the rest argument expression to not miss any.

When Jiconop is used to attach to a warmed up BOSH session Strophe goes
to ATTACHED instead of the CONNECTED state.

The LastSuccessTracker has direct access to the Strophe.Connection.

The XMPP stream resumption will enable automatically if supported by
Prosody on Websocket connections. Pass the 'enableWebsocketResume'
config option set to 'false' to disable.

Websocket keep alive is HTTP GET request sent on the service URL passed
to Strophe. It is used to keep the stick tables alive. The feature comes
in enabled by default whenever Websocket are used. Pass
'websocketKeepAlive' config option set to -1 to disable.

See the code for more details about the default interval value.

If Strophe goes to the ERROR state it will pass the error message there
and then transition to the DISCONNECTED state, but without any error
msg.