[SOLVED]Creating a Server daemon in Socket Programming

sajanagr has asked for the wisdom of the Perl Monks concerning the following question:

I have a server and client script working perfectly fine.

Now, I want to create a daemon for my server, so I made an entry in /etc/xinetd.d/sajan as ->

# default: on

service sajan
{
   port            = 7890
   socket_type     = stream
   wait            = no
   user            = root
   server          = /tmp/server.pl
   log_on_success  += USERID
   log_on_failure  += USERID
   disable         = no
}
[download]

Now, when i use the client script to access the server I get error as "Address already in use" at bind() in my server.pl code.

I am doing something wrong somewhere, I need some guidance here.

Thanks for your help in advance.

Comment on [SOLVED]Creating a Server daemon in Socket Programming Download Code

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Re: Creating a Server daemon in Socket Programming by ahmad (Hermit) on Jul 12, 2010 at 14:28 UTC
I think you should add `flags = REUSE` to your xinetd.d configuration file	[reply] [d/l]
Re^2: Creating a Server daemon in Socket Programming by sajanagr (Acolyte) on Jul 13, 2010 at 04:53 UTC
Hi ahmad The flags was what was missing. I am very thankful to you. I was banging my head for last 2 days to resolve this. I had used SO_REUSEADDR flag for bind function. But xinetd require one too. Thanks a lot, the issue is resolved.	[reply]
Re: Creating a Server daemon in Socket Prograaming by Anonymous Monk on Jul 12, 2010 at 09:22 UTC
"Address already in use" Could it be that the address is already in use?	[reply]
Re^2: Creating a Server daemon in Socket Prograaming by sajanagr (Acolyte) on Jul 12, 2010 at 09:34 UTC
Hi Forgot to mention that, the port 7890 i am using is not being elsewhere. The port is free. I have used it in the daemon and then in the code. I think they are conflicting. I need to fix this, but I don't have the correct idea.	[reply]
Re^3: Creating a Server daemon in Socket Prograaming by Anonymous Monk on Jul 12, 2010 at 09:41 UTC
Bind: Address Already in Use	[reply]
Re^4: Creating a Server daemon in Socket Prograaming by sajanagr (Acolyte) on Jul 12, 2010 at 09:52 UTC
Re^3: Creating a Server daemon in Socket Prograaming by sierpinski (Chaplain) on Jul 12, 2010 at 11:36 UTC
the port 7890 i am using is not being elsewhere. The port is free. Are you sure? It seems your system thinks otherwise. How do you know what the port is free? Have you checked netstat -a \|grep 7890? Generally useful error messages are... useful. If it says the port is in use, it probably is.	[reply]
Re^4: Creating a Server daemon in Socket Prograaming by sajanagr (Acolyte) on Jul 12, 2010 at 11:57 UTC
Re^5: Creating a Server daemon in Socket Prograaming by sierpinski (Chaplain) on Jul 12, 2010 at 12:34 UTC
Re: Creating a Server daemon in Socket Programming by bluescreen (Friar) on Jul 12, 2010 at 14:22 UTC
You might set the SO_REUSEADDR when binding ports, see Configure REUSE ADDRESS MULTIPLE SOCKET 2 ONE PORT. If that doesn't work for you may need to show us the server's code specially at the bind part of it	[reply]