https://gitlab.synchro.net/main/sbbs/-/commit/e28ab10be189fa2ee989b2a4
Modified Files:
src/syncterm/conn_pty.c conn_telnet.c modem.c rlogin.c rlogin.h
Log Message:
Tie all the input and output threads together with an atomic_bool

Since we're using it in one place, use it everywhere. While we're
here, read()/recv() of 0 after select indicates a closed connection
as well, an ensure we check terminate flags in inner loops.

This should help with SyncTERM issues where it appears to be
connected until you press a key, or it "hangs" and you have to
manually disconnect due to the connection actually having been
torn down at one end or the other.
--- SBBSecho 3.23-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)