Windows already had a uring like API for sockets called registered I/O. It was specifically designed to overcome IOCP limitations Edit: you can read about it b

Windows already had a uring like API for sockets called registered I/O. It was specifically designed to overcome IOCP limitations Edit: you can read about it by googling for the original RIO presentation, but the gist is that at very high packet rates the completion signaling and locking/unlocking buffers for I/O cause a lot of overhead and RIO mitigates that by preregistering buffers