Port hung issue

[core dump for memmove]

I just killed my application that uses a port 57001 . After that i restated the same application but it is not comming up. I suspect that this port was hung as i found using netstat command as follows :
netstat -an | grep -i 57001
tcp 0 0 *.57001 *.* LISTEN
tcp 0 0 127.0.0.1.57001 127.0.0.1.63275 CLOSE_WAIT
tcp 0 0 127.0.0.1.63562 127.0.0.1.57001 FIN_WAIT_2
tcp 0 0 127.0.0.1.63507 127.0.0.1.57001 FIN_WAIT_2
tcp 0 0 127.0.0.1.63448 127.0.0.1.57001 FIN_WAIT_2
tcp 0 0 127.0.0.1.57001 127.0.0.1.63507 CLOSE_WAIT
tcp 0 0 127.0.0.1.57001 127.0.0.1.63448 CLOSE_WAIT
tcp 0 0 127.0.0.1.57001 127.0.0.1.63562 CLOSE_WAIT
tcp 0 0 127.0.0.1.63336 127.0.0.1.57001 FIN_WAIT_2
tcp 0 0 127.0.0.1.63392 127.0.0.1.57001 FIN_WAIT_2
tcp 0 0 127.0.0.1.63275 127.0.0.1.57001 FIN_WAIT_2
tcp 0 0 127.0.0.1.57001 127.0.0.1.63336 CLOSE_WAIT
tcp 0 0 127.0.0.1.57001 127.0.0.1.63392 CLOSE_WAIT


How to clear this port 57001

I used lsof -i tcp:57001

it has not shown any process id that used this port 57001.

PLease help me in this regards.

Sudhansu

[ankitj1983]

Hello Sudhansu,

Can you give me the output when you are trying to start the application.

Regards

Ankit

[Michael Steele_2]

Hi

What is attached to your local host reserved ip 127.0.0.1? As 127.0.0.1.57001 is attached? And 127.0.0.63336 is attached? And 127.0.0.1.63392 is attached. Etc.

Review you netstat for 127.0.0.1.

[Benoy Daniel]

try this to clear the WAIT sessions.

ndd -get /dev/tcp tcp_status | grep | grep TCP_FIN_WAIT_2 | awk '{print $1}'
do
ndd -set /dev/tcp tcp_discon 0x${i}
if [ $? -eq 0 ]
then
echo "Cleared $i"
else
echo "Unable to clear $i"
fi
done