Programming

i am new to UNIX and C (primarilly a JDE and AS400/RPG developer). However,
I need to find a way to send data to and from a web service from within a UNIX C program.

What i would like to be able to do is to receive in a block of XML (from a non C application), wrap it, and then open a TCPIP port on the server to communicate with the web service. I would then send the XML block to the web service and then recieve a message back to confirm the data was received.

I have 2 questions:

1. is there a way to open a TCPIP port in UNIX C? if so could you point me in the right direction of how to do this?

2. has anyone done anything like the process I describe above before?

Many thanks for your help on this.

This tutorial might be just what you need. Covers your first question. As for your second question, yes I imagine that quite a few of the members have done some sort of network programming before.

Curl is a C library for HTTP access. On certain systems such as Linux, they are usually in the package repository right out of the box, so don't reinvent the wheel by doing HTTP with raw TCP yourself.

http://curl.haxx.se/libcurl/

The chapter "IPC:Sockets" is exlpained socket programming.
http://www.cs.cf.ac.uk/Dave/C/