I think what the OP meant was no 3rd party library dependencies such as a CGI library and that he's still dependent on OS system calls such as file I/O and sockets.
You don't need sockets. I used xinetd instead. Got the idea from someone else on the net. Not uncommon. And performance isn't bad either just 10% less than what it could have been, even if every request spawns a process.
Unix processes creation is lightweight and fast, unlike Windows.