Listening on port for incoming data?

Shell Programming and Scripting
1

I am not what I would call an experienced programmer.
I know some ksh etc..

I need to be able to listening on a port for incoming data on a ultra 10 using solaris 9. Basically all that I need to do at the moment is to log the incoming data on a specific port number.

Any ideas on how I can get started on this?

2

what language do you want to do this in? this page: Programming in C has an introduction to socket programming in C.

3

Hi,

I have never really learned much in C...

Could it be do in korn shell scripting or perl or something??

any help would be great. Thanks

4

I don't think socket programming is supported in any shell scripting. Perl does, though. It's not a shell scripting language anyway. Unless you choose to use the IO::Socket module, Perl's socket programming is (nearly) identical to that of C. So any socket programming literature in C is likely to help you.

[P.S. I'm currently writing a doc with a section on Perl network programming. It's not complete but has at least a TCP/UDP server/client simple example with some explanations. If you need to I can extract that part from the PDF and send it to you.]

5

yes, in a shell script you would have to use some outside utility to do any type of networking. so, you could search on freshmeat.net or a similir site (like sourceforge) for some type of small utility that can establish connections with hosts, and send and recieve data.

6

Python also has some builtins for easy socket manipulation.

Cheers,

Keith

7

In Java you would do something like this:

public class HTTPServer { 
  public static void main(String a[]) throws Exception { 
  final int httpd = 80; 

  ServerSocket ssock = new ServerSocket(httpd); 
  System.out.println("have opened port 80 locally"); 

  Socket sock = ssock.accept(); 
  System.out.println("client has made socket connection"); 

  OneConnection client = new OneConnection(sock); 
  String s = client.getRequest(); 
  } 
}