Don't decrease counter for internal/unused tracks #118
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Summary
Looking at metrics on Community I spotted something a little disturbing. Our counter for output video (screen) tracks went negative.
Inspecting the logs revealed an unusual track being removed when the session closed:
My theory so far is that the track is created internally by
pion
as a result of the client negotiating asendrecv
transceiver. To avoid this sort of issues, before decreasing the counter we are adding a track ID validation function that will only match tracks explicitly created by us.