func setReadBuffer(fd *netFD, bytes int) error {
	if fd.fakeNetFD != nil {
		return fd.fakeNetFD.setReadBuffer(bytes)
	}
	return syscall.ENOPROTOOPT
}

func setWriteBuffer(fd *netFD, bytes int) error {
	if fd.fakeNetFD != nil {
		return fd.fakeNetFD.setWriteBuffer(bytes)
	}
	return syscall.ENOPROTOOPT
}

func setKeepAlive(fd *netFD, keepalive bool) error {
	return syscall.ENOPROTOOPT
}

	c.LocalAddr()
	c.RemoteAddr()
	c.SetDeadline(time.Now().Add(someTimeout))
	c.SetReadDeadline(time.Now().Add(someTimeout))
	c.SetWriteDeadline(time.Now().Add(someTimeout))
	c.SetReadBuffer(2048)
	c.SetWriteBuffer(2048)

	wb := []byte("UDPCONN TEST")
	rb := make([]byte, 128)
	if _, err := c.WriteToUDP(wb, c.LocalAddr().(*UDPAddr)); err != nil {
		t.Fatal(err)
	}
	if _, _, err := c.ReadFromUDP(rb); err != nil {

}

func setReadBuffer(fd *netFD, bytes int) error {
	err := fd.pfd.SetsockoptInt(syscall.SOL_SOCKET, syscall.SO_RCVBUF, bytes)
	runtime.KeepAlive(fd)
	return wrapSyscallError("setsockopt", err)
}

func setWriteBuffer(fd *netFD, bytes int) error {
	err := fd.pfd.SetsockoptInt(syscall.SOL_SOCKET, syscall.SO_SNDBUF, bytes)
	runtime.KeepAlive(fd)
	return wrapSyscallError("setsockopt", err)
}

	if err != nil {
		return nil, os.NewSyscallError("dup", err)
	}
	return os.NewFile(uintptr(dfd), s), nil
}

func setReadBuffer(fd *netFD, bytes int) error {
	return syscall.EPLAN9
}

func setWriteBuffer(fd *netFD, bytes int) error {
	return syscall.EPLAN9
}

func (fd *netFD) SetDeadline(t time.Time) error {
	return fd.pfd.SetDeadline(t)
}

func (fd *netFD) SetReadDeadline(t time.Time) error {

	}
	return nil
}

// SetWriteBuffer sets the size of the operating system's
// transmit buffer associated with the connection.
func (c *conn) SetWriteBuffer(bytes int) error {
	if !c.ok() {
		return syscall.EINVAL
	}
	if err := setWriteBuffer(c.fd, bytes); err != nil {
		return &OpError{Op: "set", Net: c.fd.net, Source: nil, Addr: c.fd.laddr, Err: err}

	if ffd.queue == nil {
		return os.NewSyscallError("setReadBuffer", syscall.EINVAL)
	}
	ffd.queue.setReadBuffer(bytes)
	return nil
}

func (ffd *fakeNetFD) setWriteBuffer(bytes int) error {
	return os.NewSyscallError("setWriteBuffer", syscall.ENOTSUP)
}

func (ffd *fakeNetFD) setLinger(sec int) error {
	if sec < 0 || ffd.peer == nil {
		return os.NewSyscallError("setLinger", syscall.EINVAL)
	}

		{"(*IPConn).RemoteAddr", Method, 0},
		{"(*IPConn).SetDeadline", Method, 0},
		{"(*IPConn).SetReadBuffer", Method, 0},
		{"(*IPConn).SetReadDeadline", Method, 0},
		{"(*IPConn).SetWriteBuffer", Method, 0},
		{"(*IPConn).SetWriteDeadline", Method, 0},
		{"(*IPConn).SyscallConn", Method, 9},
		{"(*IPConn).Write", Method, 0},
		{"(*IPConn).WriteMsgIP", Method, 1},
		{"(*IPConn).WriteTo", Method, 0},

pkg net, method (*IPConn) SetDeadline(time.Time) error
pkg net, method (*IPConn) SetReadBuffer(int) error
pkg net, method (*IPConn) SetReadDeadline(time.Time) error
pkg net, method (*IPConn) SetWriteBuffer(int) error
pkg net, method (*IPConn) SetWriteDeadline(time.Time) error
pkg net, method (*IPConn) Write([]uint8) (int, error)
pkg net, method (*IPConn) WriteTo([]uint8, Addr) (int, error)