Logitech Circle cameras can stream live over WebRTC.

[Wayne Wilson]

I found this information on the logitech circle API site:

"WebRTC is a multi-protocol standard allowing for peer-to-peer transmission with end-to-end encryption. WebRTC is the preferred protocol for doing live view of a Circle camera.

...

Camera-side WebRTC uses a native WebRTC stack running on the camera. This stack is configured to allow for peer-to-peer calls running on both UDP (STUN discovered), TCP / TLS transports (TURN discovered). Camera-side WebRTC calls are real-time low latency. Only Circle 2 cameras running recent firmware (5.8.x series or later) support Camera-side WebRTC."

They do not recommend using RTSP since that only streams from Logitech's cloud  servers.

Is this something for which camect has built in stack support for, i.e. Compliant WebRTC stacks MUST support RTP over TCP (RFC 4571) and TURN over TCP (RFC 6062)?

These might be a nice addition to the camect supported list.  I must mention one caveat that concerns me in their documentation, they note that only one stream at a time can be handled locally so that if a second call is made to the camera, it switches that call automatically to the server side.  Hmmm, must mean you have to turn off the Logitech cloud support to get permanent local connections.