default:
			n, err = syscall.Read(fd.Sysfd, buf)
			if fd.kind == kindPipe && err == syscall.ERROR_OPERATION_ABORTED {
				// Close uses CancelIoEx to interrupt concurrent I/O for pipes.
				// If the fd is a pipe and the Read was interrupted by CancelIoEx,
				// we assume it is interrupted by Close.
				err = ErrFileClosing
			}
		}
		if err != nil {
			n = 0
		}
	} else {
		o := &fd.rop

	procGetIfEntry                         = modiphlpapi.NewProc("GetIfEntry")
	procCancelIo                           = modkernel32.NewProc("CancelIo")
	procCancelIoEx                         = modkernel32.NewProc("CancelIoEx")
	procCloseHandle                        = modkernel32.NewProc("CloseHandle")
	procCreateDirectoryW                   = modkernel32.NewProc("CreateDirectoryW")

//sys	postQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error) = PostQueuedCompletionStatus
//sys	CancelIo(s Handle) (err error)
//sys	CancelIoEx(s Handle, o *Overlapped) (err error)

//sys	PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error)
//sys	CancelIo(s Handle) (err error)
//sys	CancelIoEx(s Handle, o *Overlapped) (err error)

	procCancelIo                                             = modkernel32.NewProc("CancelIo")
	procCancelIoEx                                           = modkernel32.NewProc("CancelIoEx")
	procClearCommBreak                                       = modkernel32.NewProc("ClearCommBreak")
	procClearCommError                                       = modkernel32.NewProc("ClearCommError")

		{"CTRL_BREAK_EVENT", Const, 1},
		{"CTRL_CLOSE_EVENT", Const, 14},
		{"CTRL_C_EVENT", Const, 1},
		{"CTRL_LOGOFF_EVENT", Const, 14},
		{"CTRL_SHUTDOWN_EVENT", Const, 14},
		{"CancelIo", Func, 0},
		{"CancelIoEx", Func, 1},
		{"CertAddCertificateContextToStore", Func, 0},
		{"CertChainContext", Type, 0},
		{"CertChainContext.ChainCount", Field, 0},
		{"CertChainContext.Chains", Field, 0},

pkg syscall (windows-386), const WSADESCRIPTION_LEN = 256
pkg syscall (windows-386), const WSASYS_STATUS_LEN = 128
pkg syscall (windows-386), const X509_ASN_ENCODING = 1
pkg syscall (windows-386), func CancelIoEx(Handle, *Overlapped) error
pkg syscall (windows-386), func ConnectEx(Handle, Sockaddr, *uint8, uint32, *uint32, *Overlapped) error
pkg syscall (windows-386), func FreeAddrInfoW(*AddrinfoW)