Implement a heartbeat: (CameraRequest::PING) which sends a request to the server with some UID, and expects back the same UID if the server is responsive.
- This is for us to fall back on, as a method to check if the server is alive during setup + in requests prior to sending a image request.
- The UID would ensure that the response that is sent back matches the most recent ping.
Implement a heartbeat: (
CameraRequest::PING) which sends a request to the server with some UID, and expects back the same UID if the server is responsive.