Add sockaddr_un for Win32.
sockaddr_un should have the same size with sockaddr_storage.
Add HANDLE p alias for SOCKET s.
Enable IPC on Windows first.
Add bld script for win32
Refactoring the IPC address retrieve code into function nn_usock_create_ipc_address
Add nn_usock_unlink for support unlink IPC pipe name.
Create function nn_usock_close to handle socket close and PIPE close at the same time.
Add win_error_check_return functin
Storage the nn_epbase parameter in usock_win for named pipe ipc usage under win32.
Checkout first.
Almost works, not it's need a bit revise.
Add ping pong test for IPC.
Only the sb can not be closed.
Getting it works.
It's finally works!.
 /* FIXME: Setting to very big time when debugging */
Test TCP send recv first.