Check out the windows sockets (winsock) implementation:
http://burks.bton.ac.uk/burks/pcinfo/progdocs/winsock/winsock1.htm

And the linux sockets:
http://www.tenouk.com/cnlinuxsockettutorials.html

Notice that the windows sockets implements Berkeley 4.3, and so you
should, in theory, be able to write a bare-bones program that compiles
on both systems with minimal compiler specific code (surrounded by
directives so it autoselects based on the compiler).

The winsock tutorial has a section on how MS Berkeley implementation
differs from the 'official' implementation, although with a very
simple program you might not have to change anything.

-Adam

On 6/19/08, Xiaofan Chen <xiaofanc@gmail.com> wrote:
> I am trying to see if I can write some simple C based program
> to test the HTTP demo project from Microchip
> (http://www.microchip.com/tcpip). The demo project is using
> the browser as the host program to test various aspect of
> the TCP/IP stack (turn on/off LED, updating button status,
> cookies, file updates, form processing, etc).
>
> My goal right now is quite modest, say I just want to
> turn on/off the LEDs using a C based program under
> Linux/Windows. Are there any examples out there?
>
> Xiaofan
> --
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