client socket read returns 0 bytes

Hi
I have apeculiar problem with sockets.

I have a shared object for my client program.

when I send a request to the server, it is suppose to process and sends back the result string to the client.

For the first request, it is working fine i.e. client sends the req. and gets the result string successfully. For the second request onwards, the client sends the request successfully BUT in its 'read' call, it is getting immediately zero bytes, even though the server sends non-zero length result string.

Where could be the problem. Could anybody help me to debug this issue.

server program is running on windows and client program is on Sun OS 5.8

Thanks

I think, I got the problem...

server socket is being closed after servicing each request. 

So, I need to create the client socket for each request, in my shared object.