* Use 32-bit time stamp to get reference time stamp on a switch.
With relay and dyncast and migration, it is possible that different
layers of a simulcast get out of sync in terms of extended type,
i. e. layer 0 could keep running and its timestamp could have
wrapped around and bumped the extended timestamp. But, another layer
could start and stop.
One possible solution is sending the extended timestamp across relay.
But, that breaks down during migration if publisher has started afresh.
Subscriber could still be using extended range.
So, use 32-bit timestamp to infer reference timestamp and patch it with
expected extended time stamp to derive the extended reference.
* use calculated value
* make it test friendly
* Fix ICE connection fallback
Short connection detection relied on iceFailedTimeout, which previously
had been misinterpreted. Since we've reduced iceFailedTimeout, it is
creating false negatives.
We'll instead use PingTimeout since clients are expected to keep the
signal connection active.
* reduce ping interval to align with total ice failure timeout
There are cases that experience the signalling channel timeout
and disconnect and there are no logs of what the state of ICE at all.
Log ICE candidates when closing transport so that there is some
visibility in those cases.
n
Logging expected WS close at Infow to understand reasons for closure.
Moving "read from ws" to Debugw as it happens when signalling closes.
Also filter out a data channel abort chunk log as it shows a bunch of
errors, but those are expected though.
It's been reported that "ghost" participants, those that did not terminate
cleanly, hang around the room for too long after they disappear.
Evaluating our timeouts a bit, it seems that we are really conservative
in waiting for participants to disconnect. This PR cuts down the disconnect
timeout from 50s to 20s, a 30s reduction.
* Split RTPStats into receiver and sender.
For receiver, short types are input and need to calculate extended type.
For sender (subscriber), it can operate only in extended type.
This makes the subscriber side a little simpler and should make it more
efficient as it can do simple comparisons in extended type space.
There was also an issue with subscriber using shorter type and
calculating extended type. When subscriber starts after the publisher
has already rolled over in sequence number OR timestamp, when
subsequent publisher side sender reports are used to adjust subscriber
time stamps, they were out of whack. Using extended type on subscriber
does not face that.
* fix test
* extended types from sequencer
* log
* Fix time stamp adjustment when starting with dmummy packets.
- Populated extended values in ExtPacket on dummy packet.
- Have to pass reference time stamp offset to first packet time
adjustment.
* display participant version info
* Add option to issue full reconnect on data channel error.
There are situations where send data packet fails because of "stream
closed". It is unclear when that happens. Seems to be after an
ICERestart after ICE failed and connection type switching to TURN
from ICE.
Once the failure happens, it is not recoverable. Potentially, it is
recoverable, but unclear where the problem lies. Attempts to reproduce
looking at the pattern of failures has been unsuccesful.
In the mean time, adding an option to issue full reconnect
when send data packet fails.
* typo
If room metadata is changed in between when a participant is joining and
when they've became active, that participant will not have the latest
room metadata.
* Integrate logger components
Dividing into the following components
* pub - publisher
* pub.sfu
* sub - subscriber
* transport
* transport.pion
* transport.cc
* api
* webhook
* update go modules
Previous change to check for non-zero width caused test failures
as subscribed track settings can use the quality field and not
necessarily width/height.
* Remove parked layer feature.
Not worth the added complexity.
Several reasons
- Not seeing black frames on pub mute always.
- If they are there, it can consume more than 30kbps if the parked layer
is high res. That is wasted bandwidth downstream when pub is muted.
- On resume, client some time sends PLI and that triggers a key frame
request.
But, leaving the separate `PubMuted` flag in forwarder in case we can
use it for better handling.
* need the request spatial
* Add control of playout delay
Add config to enable playout delay. The delay will be limited by
[min,max] in the config option and calculated by upstream & downstream
RTT.
* check protocol version to enable playout delay
* Move config to room, limit playout-delay update interval, solve comments
* Remove adaptive playout-delay
* Remove unused config
Server could have closed subscriber PC to aid migration.
But, if a resumes lands back on that node, a resume of
the participant session is not possible as subscriber PC is already
closed. While theoretically possible to form a new subscriber
peer conenction, reducing complexity and issuing a full reconnect
as this should be a rare case.
* Ability to use trailer with server injected frames
A 32-byte trailer generated per room.
Trailer appended when track encryption is enabled.
* E2EE trailer for server injected packets.
- Generate a 32-byte per room trailer. Too reasons for longer length
o Laziness: utils generates a 32 byte string.
o Longer length random string reduces chances of colliding with real data.
- Trailer sent in JoinResponse
- Trailer added to server injected frames (not to padding only packets)
* generate
* add a length check
* pass trailer in as an argument
1. When re-allocating for a track in DEFICIENT state, try to use
available headroom to accommodate change before trying to steal
bits from other tracks.
2. If the changing track gives back bits (because of muting or
moving to a lower layer subscription), use the returned bits
to try and boost deficient track(s).
Paul Wells