ConnectionHealthCommon.progressing property
False = the connection is established and media is arriving, but nothing is reaching the output (streams is empty) — e.g. an RTMP publisher pushing so far above realtime that the timestamp corrector never leaves its initial- burst state and silently withholds all media. Treat a sustained progressing: false as a dead input and close the connection. Always true for SRT.
Signature:
progressing: boolean;