Cannot find stream errors in recent OME versions(0.16.5)

[ah1295]

I am streaming an rtsp stream from camera using OME with webrtc over tcp. There are cannot find stream errors when I load the stream in the ovenplayer, after 1-2 seconds, live streaming starts without any problem.

Ovenplayer console error : {code: 501, message: 'Connection with low-latency(OME) server failed.', reason: 'WebSocket connection failed.', error: 'Cannot create offer'}
OME logs:
E [SPRtcSig-t3333:10] WebRTC Publisher | webrtc_publisher.cpp:333 | Cannot find stream (#default#app/live.stream)
E [SPRtcSig-t3333:10] Signalling | rtc_signalling_server.cpp:407 | Cannot find stream [#default#app/live.stream]

OME version - 0.16.5

Attaching logs and Server.xml
ome0.16.5logs.txt
Server.xml.zip

[getroot]

The first playback request to edge fails because we temporarily commented out the feature that holds the first requested session until the RTSP stream is fully created due to performance issues. To be more specific, previously all requested WebRTC sessions were held until the RTSP stream was created, which could hold all socket threads, causing serious problems such as dead-locking the port until the stream was created. I'm working on some design changes to make this smarter.

[getroot]

Alternatively, you can solve your problem by pre-creating the RTSP stream. If you create it with "persistent": true, the stream will not be deleted.

https://airensoft.gitbook.io/ovenmediaengine/rest-api/v1/virtualhost/application/stream#create-stream-pull

[getroot]

And sorry, we can't provide technical support for older versions. So many things have changed, it's very difficult.

[ah1295]

Thanks for the response.

I tried with WaitUntilStart(10000) but getting same Cannot find stream errors. Actually this code

OvenMediaEngine/src/projects/publishers/webrtc/webrtc_publisher.cpp

Line 338 in 9234cfd

if (stream->WaitUntilStart(0) == false)

is not getting executed because before that below code is getting executed as stream is null and returning null after printing the logs.

OvenMediaEngine/src/projects/publishers/webrtc/webrtc_publisher.cpp

Line 333 in 9234cfd

logte("Cannot find stream (%s/%s)", final_vhost_app_name.CStr(), final_stream_name.CStr());

[getroot]

Oh, sorry. The structure of OME has changed a few times over the years, so it no longer works.

This is on our backlog, but it will take a lot of time as it requires quite a few changes to make it work without performance degradation. We will get this resolved once our busy times are over.

[ah1295]

Hi @getroot
I noticed that two new versions of OME have been released since our last discussion on this issue. Could you please confirm if these issues have been addressed in the latest release? If not, could you provide an update on the expected timeline for the fix?

[getroot]

This is not fixed yet.
This is not a critical issue, since playback will start immediately when the player automatically reconnects, so it is a low priority. Alternatively, you can use an alternative solution that uses the API to pre-create the stream before the player connects.