Author	SHA1	Message	Date
Graham McIntire	fa89c6d3ca	Add TCP backpressure to packet pipeline ... When the PacketProducer buffer crosses 80% capacity, signal Aprsme.Is to switch its TCP socket to passive mode, leveraging TCP flow control to slow APRS-IS intake. Resume active mode when buffer drains below 30%. A 30-second safety valve timer auto-resumes if backpressure gets stuck. Disconnect/reconnect/terminate paths all clear backpressure state.	2026-02-19 15:31:51 -06:00