How can i use docker for deploy?

[nrtpkim]

when I start docker I cannot open the camera and then I open the camera, error show below

`/usr/local/lib/python3.9/site-packages/aiortc/rtcdtlstransport.py:211: CryptographyDeprecationWarning: This version of cryptography contains a temporary pyOpenSSL fallback path. Upgrade pyOpenSSL now.
_openssl_assert(lib.SSL_CTX_use_certificate(ctx, self._cert._x509) == 1) # type: ignore
2022-11-11 10:59:02.255 Track video received
2022-11-11 10:59:02.255 Set <aiortc.rtcrtpreceiver.RemoteStreamTrack object at 0x7f7cb2a4dd00> as an input video track with video_processor <class 'streamlit_webrtc.process.AsyncVideoProcessTrack'>
2022-11-11 10:59:02.255 Add a track <streamlit_webrtc.process.AsyncVideoProcessTrack object at 0x7f7cb2a51730> of kind video to <aiortc.rtcpeerconnection.RTCPeerConnection object at 0x7f7cb3af6cd0>
/usr/local/lib/python3.9/site-packages/aiortc/rtcdtlstransport.py:186: CryptographyDeprecationWarning: This version of cryptography contains a temporary pyOpenSSL fallback path. Upgrade pyOpenSSL now.
value=certificate_digest(self._cert._x509), # type: ignore
2022-11-11 10:59:02.292 Connection(0) Check CandidatePair(('172.24.0.3', 37908) -> ('192.168.0.117', 65137)) State.FROZEN -> State.WAITING
2022-11-11 10:59:02.293 ICE connection state is checking
2022-11-11 10:59:02.293 Connection(0) Check CandidatePair(('172.24.0.3', 37908) -> ('192.168.0.117', 65137)) State.WAITING -> State.IN_PROGRESS
2022-11-11 10:59:17.594 ICE connection state is closed
2022-11-11 10:59:17.899 Exception in callback Transaction.__retry()
handle: <TimerHandle when=16114.24134038 Transaction.__retry()>
Traceback (most recent call last):
File "/usr/local/lib/python3.9/asyncio/selector_events.py", line 1054, in sendto
self._sock.sendto(data, addr)
AttributeError: 'NoneType' object has no attribute 'sendto'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.9/asyncio/events.py", line 80, in _run
self._context.run(self._callback, *self._args)
File "/usr/local/lib/python3.9/site-packages/aioice/stun.py", line 309, in __retry
self.__protocol.send_stun(self.__request, self.__addr)
File "/usr/local/lib/python3.9/site-packages/aioice/ice.py", line 243, in send_stun
self.transport.sendto(bytes(message), addr)
File "/usr/local/lib/python3.9/asyncio/selector_events.py", line 1064, in sendto
self._fatal_error(
File "/usr/local/lib/python3.9/asyncio/selector_events.py", line 711, in _fatal_error
self._loop.call_exception_handler({
AttributeError: 'NoneType' object has no attribute 'call_exception_handler'`

[whitphx]

I cannot open the camera and then I open the camera

Please elaborate it.
What does "I cannot open the camera" and "then I open the camera" mean?

---

Note:
A large part of the error message is about an exception subsequently raised after the main problem like the case at #552 (comment)

[nrtpkim]

Sorry for my miscommunication.

• "I cannot open the camera" mean when I click the "START" button to start video and audio streaming, The software show loaded until a timeout and return to the initial session.

• "Open the camera" mean clicking the "START" button to start video and audio streaming.

[moono]

You should first check if your client PC has allowed UDP ports.

I had similar problem like OP and installed coturn (turn/stun server) and everything but nothing worked.
My problem was that I was using Windows 10 as client (which tries to connect stream_webrtc installed docker container on company's cloud infrastructure),
I had to allow UDP ports range: 49152 - 65535 to get it working.
No turn / stun server needed.

And yes if you deployed your application in some public cloud than you need a turn/stun server.

Another note is that if the your first attempt didn't worked, than try again, than it works.
Every time I test with chrome's incognito tab, I had to press start twice to get it working.

[yusuf-jkhan1]

@whitphx can you provide a dockerfile example for deployment? I am also getting this error. I went down a google spiral trying to figure out how to install a sound card server inside the docker container.