Re^3: Problem with Socket Programming Perl Script

[Anonyrnous Monk]

tcp        0      0 192.168.0.34:4500           0.0.0.0:*                   LISTEN      22948/nco_objserv

As you've confirmed yourself, the socket/port is already in use by another process, which is why you get the "Address already in use" error.  You need to kill that process if you want to start another one listening on the same port.

The Reuse => 1 option only means that the socket is immediately being freed for reuse when the process exists, not that you can have several processes listening on the same socket (in case that's what you thought).

(I'm a little confused as to what exactly you're trying to do. Your first post looked like you wanted to connect to an existing service. Now it seems you want to write one yourself, but there's already nco_objserv listening on that port...(?))

[tyingst]

I'm confused by "The Reuse => 1 option only means that the socket is immediately being freed for reuse when the process exists" Do you mean "when the process exits"?

[ashok.g]

See,
nco_objserv is the process which send the data via port 4500.
So, I need to catch that data. If I kill that process then I won't have any data on that port.
In this scenario how can I achieve this functionality?

[Anonyrnous Monk]

You seem to have it backwards. nco_objserv is listening on that port (see "LISTEN" in netstat output).  That means it won't send any data unless you connect to it as a client. Which is what your first attempt looked like... So, modify that initial code to just don't do accept, but rather simply read from the socket.

[ashok.g]

Also, I have
tcp        0      0 192.168.0.34:4500           192.168.0.34:32996          ESTABLISHED 22948/nco_objserv Here, for the port 4500 I have both LISTEN and ESTABLISHED.Can't I retrieve data now?