}
	return n, err
}

// WriteMsgIP writes a message to addr via c, copying the payload from
// b and the associated out-of-band data from oob. It returns the
// number of payload and out-of-band bytes written.
//
// The packages golang.org/x/net/ipv4 and golang.org/x/net/ipv6 can be
// used to manipulate IP-level socket options in oob.
func (c *IPConn) WriteMsgIP(b, oob []byte, addr *IPAddr) (n, oobn int, err error) {

	} else {
		f.Close()
	}

	defer func() {
		if p := recover(); p != nil {
			t.Fatalf("panicked: %v", p)
		}
	}()

	wb := []byte("IPCONN TEST")
	c.WriteToIP(wb, nil)
	c.WriteMsgIP(wb, nil, nil)
}

func TestUnixListenerSpecificMethods(t *testing.T) {
	if !testableNetwork("unix") {
		t.Skip("unix test")
	}

	addr := testUnixAddr(t)
	la, err := ResolveUnixAddr("unix", addr)

		{"(*IPConn).SetWriteBuffer", Method, 0},
		{"(*IPConn).SetWriteDeadline", Method, 0},
		{"(*IPConn).SyscallConn", Method, 9},
		{"(*IPConn).Write", Method, 0},
		{"(*IPConn).WriteMsgIP", Method, 1},
		{"(*IPConn).WriteTo", Method, 0},
		{"(*IPConn).WriteToIP", Method, 0},
		{"(*IPNet).Contains", Method, 0},
		{"(*IPNet).Network", Method, 0},
		{"(*IPNet).String", Method, 0},

pkg net, func LookupNS(string) ([]*NS, error)
pkg net, method (*Dialer) Dial(string, string) (Conn, error)
pkg net, method (*IPConn) ReadMsgIP([]uint8, []uint8) (int, int, int, *IPAddr, error)
pkg net, method (*IPConn) WriteMsgIP([]uint8, []uint8, *IPAddr) (int, int, error)
pkg net, method (*UDPConn) ReadMsgUDP([]uint8, []uint8) (int, int, int, *UDPAddr, error)
pkg net, method (*UDPConn) WriteMsgUDP([]uint8, []uint8, *UDPAddr) (int, int, error)