ws2_32::WSASend

pub unsafe extern "system" fn WSASend(s: SOCKET, lpBuffers: LPWSABUF, dwBufferCount: DWORD, lpNumberOfBytesSent: LPDWORD, dwFlags: DWORD, lpOverlapped: LPWSAOVERLAPPED, lpCompletionRoutine: LPWSAOVERLAPPED_COMPLETION_ROUTINE) -> c_int