Number of socket connection

[manan.dave]

Hi All,
I am using normal socket program in c in HP-UX.I want to know at a time how many client are connected to socket. Is there any command using which i can check how many user are connected to socket ?
Thanks in advance.

[Steven E. Protter]

Shalom,

Funny, I just read this in a performance book for HP-UX last night.

netstat -aAn

The man page for netstat will allow you to refine this output.

SEP

[Mel Burslan]

netstat -aAn will not work as -A is not an option in the list of switches for netstat. But you can do

netstat -an > /tmp/mytempfile

then edit this /tmp/mytempfile and look for a pattern saying "Active UNIX domain sockets". After this line, it is all sockets. It is upto you to determine what is connecting to where and then count them.

HTH

[rick jones]

For a TCP socket, there is by defintion only one client "connected" to a socket. There can, of course be many clients connected to a service residing at a (well) known port number.

For UDP it gets a bit less clear.

[Prashanth Waugh]

Hi Steven,

I checked this command on 11.11 and 11.31 #netstat -aAn. its not giving any out put.also in ma pages i m not able to find A

Regards
Prashant

[Turgay Cavdar]

Lsof may be useful for you:

lsof -i@ip_address:port_number
lsof -i@192.168.30.80:1521

[Laurent Menase]

Do you mean programatically?
or with a command
if you are looking for a command:
myport is your port num.
nestat -an | grep -v LISTEN |grep \.$myport | wc -l

if you can have loopback connection then
netstat -an| grep '\.23 '| grep -v -E '\.23( )*[A-Z]'\|LISTEN |wc -l

[RajuD]

Hi manan.dave,

Could you post the program.


regards
Rajesh Kumar