It's blinking red, which normally means a broken link. I'm not sure howThe file 0 is a symbolic symlink which doesn't really point to a file, that's why the shell shows it blinking. Everything okay here.
Thanks. That's what I thought, but I wasn't sure.
reliable that is in this case. Anyway, lsof reports: pop3d 25038 cyrus 0u IPv4 -64802663 TCP cyrus.rrz.uni-koeln.de:pop3s->p50865F5D.dip.t-dialin.net:1064 (ESTABLISHED) It *thinks* the connections is still open. So does netstat: # LANG=C netstat -a|grep p50865F5D tcp 0 0 cyrus.rrz.uni-koeln.d:pop3s p50865F5D.dip.t-dialin:1064 ESTABLISHED But obviously that connection is dead. I don't know what conclusions to draw from that ...Just two ideas come to mind: 1) Since it only happens on dialup connections, could it be that the dialin router at the providers end sends TCP/RST when a client hangs up and those packets are filtered somewhere, maybe on your firewall?
OK, let's run with that one.a) We don't really have a firewall, we only use ACLs on the Cisco routers. You can't even filter TCP/RST there.
b) Even *if* a TCP/RST had been dropped, lost or whatever, the server *still* should timeout eventually!
2) Could it be that SO_LINGER should be used as socket option in service_create() in master/master.c.
I didn't remember that option, so I just read up on it. It seems as though SO_LINGER is very dependent on implementation. If I get your intention correctly SO_LINGER would have to be set with l_onoff set to non-zero and l_linger to zero, right? So close() would return immediately? That might make sense if the stack trace showed a call to close(). But if I understand the code correctly, close() isn't called at all. The socket is closed as a result of a call to exit(). And that defeats all use of SO_LINGER:
"When the socket is closed as part of exit(2), it always lingers in the background."
If it's complete nonsense, ignore it.
I wouldn't know :-)
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.:.Sebastian Hagedorn - RZKR-R1 (Gebäude 52), Zimmer 18.:.
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