Using Sockets in postgres

Hi,

I've made a client and a server program in C using socket library.

The client is in the postgres database server and Server is on some other
machine.

My goal is to compile the client as a shared object, load it dynamically in
postgres (in a function), execute that postgres function in which this
shared library (client) is dynamically loaded and connect to the server
(hosted on some other machine outside the domain of postgres database
server).
In otherwords, connecting to another server through postgres database using
the client code dynamically loaded in postgres.

Now, here starts the problem. In my client code when i use functions like
gethostbyname as follows,

server = gethostbyname("www.yahoo.com");
serv_addr.sin_addr.s_addr = inet_addr("server");

It closes my postgres server and gives the follwowing error message:-

server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.

After commenting my code at various lines, I figured out that
gethostbyname() function is the cause of this error message.

Can anyone please throw light on this problem.

Thanks,
~Jas