The trx handler stamped its PTT cache BEFORE commanding the radio and left
it in place when the command failed. An operator running JTDX over TCI with
an Icom on CI-V lost an un-key to a lost acknowledgement: the cache recorded
"off" regardless, and from then on every trx:0,false was dismissed as a
repeat of a state the radio had never reached. The cache is per-server, not
per-connection, so reconnecting JTDX changed nothing either -- the
transmitter stayed keyed into the amplifier, with no drive, until the radio
was switched off by hand.
The cache is now written only on success, and a failure clears "known"
outright so the next command reaches the radio whatever it is.
Second guard: releasePTT drops a PTT this server asserted when the client
disconnects, and when the server stops -- before the CAT backend goes down,
while the rig is still reachable. rigctld has had that since a K3 sat in
transmit for 29 s; the TCI server was written without it, so an operator
moving from Hamlib to TCI silently lost the protection. A later log shows
the rig keyed for 40 s across a JTDX reconnect for exactly that reason.
rouggy
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