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swung0x48
0293aebb17
- ServerMain.cpp: RunSession takes the descriptor its data-connection source reads from (the child's hand-off end under --serve, the listener itself without it) and closes it the moment Accept returns; the source object goes with it
- the supervisor's hand-off send is MSG_DONTWAIT (FdPassing::SendFd dontWait), so a peer that stopped reading answers at once; "peer gone" on a datagram pair (ECONNREFUSED, ENOTCONN) is an answer the caller names, not a logged fault
- before: every DataBind after the bind sat in the child's receive queue with no reply, its TCP connection held open until the session ended, and past the queue limit (net.unix.max_dgram_qlen 10 on the phone; ~288 datagrams of sender buffer on this host) the supervisor blocked in sendmsg for the rest of the session - no accepts, no Busy, no reaping
- before, without --serve: the listener stayed open after the data connection bound, so a second client or a retry completed a TCP handshake nobody would accept and waited out its 20 s connect budget instead of the ECONNREFUSED it got before PH-7 (4)
- tcp_supervisor_smoke.py: data_bind_after_bound (12 extra DataBinds on a bound session each get Refuse{Authentication} "data connection could not be handed to the live session", and a fresh control connection is still Busy) and single_session_listener (a connect after `ready` is ECONNREFUSED); connect_control retries ECONNREFUSED at startup for pair() and held_session() alike
- red-once at da313010: smoke TimeoutError on the first extra's receive; probe with qlen+2 fire-and-forget DataBinds: 288 queued silently, then the supervisor stopped accepting (fresh control: connect timed out) while still alive; single-session connect after ready succeeded