n, err := fd.pfd.Writev((*[][]byte)(buf))
	runtime.KeepAlive(fd)
	return n, wrapSyscallError("wsasend", err)
}

func (fd *netFD) accept() (*netFD, error) {
	s, rawsa, rsan, errcall, err := fd.pfd.Accept(func() (syscall.Handle, error) {
		return sysSocket(fd.family, fd.sotype, 0)
	})

	if err != nil {
		if errcall != "" {
			err = wrapSyscallError(errcall, err)
		}
		return nil, err
	}

		written, werr, handled = poll.SendFile(&c.pfd, int(fd), remain)
		return true
	})
	if err == nil {
		err = werr
	}

	if lr != nil {
		lr.N = remain - written
	}
	return written, wrapSyscallError("sendfile", err), handled

			return 0, nil, true
		}
	}

	f, ok := r.(*os.File)
	if !ok {
		return 0, nil, false
	}

	written, err = poll.SendFile(&fd.pfd, syscall.Handle(f.Fd()), n)
	if err != nil {
		err = wrapSyscallError("transmitfile", err)
	}

	// If any byte was copied, regardless of any error
	// encountered mid-way, handled must be set to true.
	handled = written > 0

	return

		err = werr
	}

	if lr != nil {
		lr.N = remain - written
	}

	_, err1 := f.Seek(written, io.SeekCurrent)
	if err1 != nil && err == nil {
		return written, err1, handled
	}

	return written, wrapSyscallError("sendfile", err), handled

		}
		runtime.KeepAlive(fd)
	}
}

func (fd *netFD) accept() (netfd *netFD, err error) {
	d, rsa, errcall, err := fd.pfd.Accept()
	if err != nil {
		if errcall != "" {
			err = wrapSyscallError(errcall, err)
		}
		return nil, err
	}

	if netfd, err = newFD(d, fd.family, fd.sotype, fd.net); err != nil {
		poll.CloseFunc(d)
		return nil, err
	}
	if err = netfd.init(); err != nil {