Logic of communication program

[pupqt]

Hi there


Am developing communication program to communicate between two systems.
To start this at initial level I want to know how it works.
I mean to say actual procedure like, Open port, then listen to it then send then close etc.

anybody can clearly tell me how it works n what should be taken care.

[tbscope]

What is a system?
What is communication?

You ask a very general question that is difficult to answer without knowing what you mean by a system and what type of cummonication you want to happen between those systems.

I suggest you learn more about tcp communication and/or inter process communication like sockets, dbus, ...