Dear All,
I have wrote simple TCP/IP client/server prog. Server is receiving data. After receiving some packets, it comes out by giving error "broken pipe". I was looking in detail by using wireshark utility and found that every thing was normal. Suddenly server sent "Finish" request ie. it set "Fin" flag while sending Acknowledgement of data received. After that it also received some data packets and remained sending Reset request to the client.

I am not able to understand why it suddenly sent Finish request to client suddenly, without any error in data or connection. Please guide me what is the reason & what will be the solution of it.

just to inform you: without seeing the code we cannot say anything.

Run your program under "strace" it will give you more insights about the broken pipe.
Usage : strace -f -s 4096 <your program>
For more info on strace see this.