last_ack

[christian_derek]

Hi,

How can I get around a port that is in LAST_ACK state. I'm currently running hpux 11.23 on an itanium machine. My tcp_fin_wait_2_timeout value is set at 30000 in the nddconf file. Sometime when we stop our listener the process could not restart because of this issue.

Thanks,

[Ivan Krastev]

This script may be helpfull for you - http://www.demailly.com/~dl/force_close_tcp


regards,
ivan

[rick jones]

UX isn't Linux but still...

If you are unable to restart a server application because there are previous connections it suggests the server code is broken and needs to be fixed by adding a setsockopt() to set SO_REUSEADDR. That will allow the server to re-establish its LISTEN endpoint while there are still old connections waiting to clean-up.

Killing a connection via ndd/scripts is a _last resort_ , and the tcp_fin_wait_2 timer is a kludge.