After connecting to server i get
"MSG 0 SESSION WAITING" (newlines removed)
i send ack and server goes silent (not counting "ALIVE" messages)
after connecting to server i'm getting
"MSG 1 SESSION QUALIFY INPROGRESS WEATHER CLEAR 0.0 0.0 ENTRY 4 NOP. B F100 B F100"
each time after that i send (i think i didn't cock this up) "ACK\n" and "1\n" (ID + '\n').
But server keeps sending same "MSG 1..." even if another client joins session (and this message is constantly repeated).
Nevermind my bad.