WebRTC Connection Issue at Office Network

[ericxtang]

Sometimes when I'm in an office, I cannot connect to the ComfyStream backend. For example, when I'm at WeWork, I see the following error. It seems to indicate that all ICE candidate pairs have failed. Perhaps this is because UDP ports are blocked?

My configuration:

• Host ComfyStream backend on Runpod
• Host ComfyStream UI on Runpod
• Visit ComfyStream in the browser via an exposed port on the Runpod instance
• Twilio is configured on the Runpod instance with Ryan's setup script

turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.DATA, message_class=Class.INDICATION, transaction_id=b'oe\xaf\x07|\xbfadw%`\x03')
turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.DATA, message_class=Class.INDICATION, transaction_id=b'\x80\xfc3d\x02\xf2DE\xa9V\xba\xa0')
turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.DATA, message_class=Class.INDICATION, transaction_id=b'\x04H\xa4\xa3\xd0\xabCG\xdb.L\x0f')
turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.DATA, message_class=Class.INDICATION, transaction_id=b'\xfcQ\x0c\xb4\x05#"A\xfcF\t\x1f')
turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.DATA, message_class=Class.INDICATION, transaction_id=b'\xd9j\x08(\x90\x14\x12QP\x1a\x90\xdd')
turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.DATA, message_class=Class.INDICATION, transaction_id=b'\xb0*\xe2|\xba\xf9\x10,\xcf;\t\x99')
turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.DATA, message_class=Class.INDICATION, transaction_id=b'#p\x0e\xc1R\xb8B\x15\xc6\x84\x17k')
Connection(0) protocol(0) > ('10.69.230.67', 53763) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b"y\xff=\x8b#Nm\x83\xd8'1z")
Connection(0) protocol(0) > ('69.193.150.98', 43747) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b';\x1c\x06\xc4\x94\xbb\x9b\x87\xb1\xf9\x8f\xe2')
Connection(0) protocol(1) > ('10.69.230.67', 53763) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b'\x99J\x88\x04qrXq\xc1e\x876')
Connection(0) protocol(1) > ('69.193.150.98', 43747) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b'N`a\x15,d\xf2k\xd0\xb7\x92\x88')
Connection(0) protocol(0) > ('10.69.230.67', 53763) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b"y\xff=\x8b#Nm\x83\xd8'1z")
Connection(0) protocol(0) > ('69.193.150.98', 43747) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b';\x1c\x06\xc4\x94\xbb\x9b\x87\xb1\xf9\x8f\xe2')
Connection(0) protocol(1) > ('10.69.230.67', 53763) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b'\x99J\x88\x04qrXq\xc1e\x876')
Connection(0) protocol(1) > ('69.193.150.98', 43747) Message(message_method=Method.BINDING, message_class=Class.REQUEST, transaction_id=b'N`a\x15,d\xf2k\xd0\xb7\x92\x88')
Connection(0) Check CandidatePair(('192.168.96.2', 5678) -> ('10.69.230.67', 53763)) State.IN_PROGRESS -> State.FAILED
Connection(0) Check CandidatePair(('192.168.96.2', 5678) -> ('69.193.150.98', 43747)) State.IN_PROGRESS -> State.FAILED
Connection(0) Check CandidatePair(('34.203.251.184', 31703) -> ('10.69.230.67', 53763)) State.IN_PROGRESS -> State.FAILED
Connection(0) Check CandidatePair(('34.203.251.184', 31703) -> ('69.193.150.98', 43747)) State.IN_PROGRESS -> State.FAILED
Connection(0) ICE failed
RTCIceTransport(controlled) - checking -> failed
RTCPeerConnection() iceConnectionState checking -> failed
RTCPeerConnection() connectionState connecting -> failed
RTCDtlsTransport(client) - State.NEW -> State.CONNECTING
RTCDtlsTransport(client) x DTLS handshake failed (connection error)
RTCDtlsTransport(client) - State.CONNECTING -> State.FAILED
Connection state is: failed
RTCIceTransport(controlled) - failed -> closed
RTCPeerConnection() iceConnectionState failed -> closed
RTCPeerConnection() connectionState failed -> closed
Connection state is: closed
Connection(0) protocol(0) connection_lost(None)
turn/udp > ('global.turn.twilio.com', 3478) Message(message_method=Method.REFRESH, message_class=Class.REQUEST, transaction_id=b'\xa9\xbf<\x8b\x1f\x91\x92u\xd30\xa7\r')
turn/udp < ('34.203.251.184', 3478) Message(message_method=Method.REFRESH, message_class=Class.RESPONSE, transaction_id=b'\xa9\xbf<\x8b\x1f\x91\x92u\xd30\xa7\r')
TURN allocation deleted ('34.203.251.184', 31703)
turn/udp connection_lost(None)
Connection(0) protocol(1) connection_lost(None)

[yondonfu]

I think I recall encountering this before and IIRC it was because UDP ports were blocked...worth at least checking if that is the case here. In case helpful there is a --media-ports flag for the server that can be used to select specific UDP ports too.