1 // Copyright 2012 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
12 "golang.org/x/net/internal/nettest"
13 "golang.org/x/net/ipv4"
16 var udpMultipleGroupListenerTests = []net.Addr{
17 &net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}, // see RFC 4727
18 &net.UDPAddr{IP: net.IPv4(224, 0, 0, 250)},
19 &net.UDPAddr{IP: net.IPv4(224, 0, 0, 254)},
22 func TestUDPSinglePacketConnWithMultipleGroupListeners(t *testing.T) {
24 case "nacl", "plan9", "windows":
25 t.Skipf("not supported on %s", runtime.GOOS)
28 t.Skip("to avoid external network")
31 for _, gaddr := range udpMultipleGroupListenerTests {
32 c, err := net.ListenPacket("udp4", "0.0.0.0:0") // wildcard address with no reusable port
38 p := ipv4.NewPacketConn(c)
39 var mift []*net.Interface
41 ift, err := net.Interfaces()
45 for i, ifi := range ift {
46 if _, ok := nettest.IsMulticastCapable("ip4", &ifi); !ok {
49 if err := p.JoinGroup(&ifi, gaddr); err != nil {
52 mift = append(mift, &ift[i])
54 for _, ifi := range mift {
55 if err := p.LeaveGroup(ifi, gaddr); err != nil {
62 func TestUDPMultiplePacketConnWithMultipleGroupListeners(t *testing.T) {
64 case "nacl", "plan9", "windows":
65 t.Skipf("not supported on %s", runtime.GOOS)
68 t.Skip("to avoid external network")
71 for _, gaddr := range udpMultipleGroupListenerTests {
72 c1, err := net.ListenPacket("udp4", "224.0.0.0:0") // wildcard address with reusable port
77 _, port, err := net.SplitHostPort(c1.LocalAddr().String())
81 c2, err := net.ListenPacket("udp4", net.JoinHostPort("224.0.0.0", port)) // wildcard address with reusable port
87 var ps [2]*ipv4.PacketConn
88 ps[0] = ipv4.NewPacketConn(c1)
89 ps[1] = ipv4.NewPacketConn(c2)
90 var mift []*net.Interface
92 ift, err := net.Interfaces()
96 for i, ifi := range ift {
97 if _, ok := nettest.IsMulticastCapable("ip4", &ifi); !ok {
100 for _, p := range ps {
101 if err := p.JoinGroup(&ifi, gaddr); err != nil {
105 mift = append(mift, &ift[i])
107 for _, ifi := range mift {
108 for _, p := range ps {
109 if err := p.LeaveGroup(ifi, gaddr); err != nil {
117 func TestUDPPerInterfaceSinglePacketConnWithSingleGroupListener(t *testing.T) {
118 switch runtime.GOOS {
119 case "nacl", "plan9", "windows":
120 t.Skipf("not supported on %s", runtime.GOOS)
123 t.Skip("to avoid external network")
126 gaddr := net.IPAddr{IP: net.IPv4(224, 0, 0, 254)} // see RFC 4727
133 ift, err := net.Interfaces()
138 for i, ifi := range ift {
139 ip, ok := nettest.IsMulticastCapable("ip4", &ifi)
143 c, err := net.ListenPacket("udp4", net.JoinHostPort(ip.String(), port)) // unicast address with non-reusable port
145 // The listen may fail when the serivce is
146 // already in use, but it's fine because the
147 // purpose of this is not to test the
148 // bookkeeping of IP control block inside the
155 _, port, err = net.SplitHostPort(c.LocalAddr().String())
160 p := ipv4.NewPacketConn(c)
161 if err := p.JoinGroup(&ifi, &gaddr); err != nil {
164 mlt = append(mlt, &ml{p, &ift[i]})
166 for _, m := range mlt {
167 if err := m.c.LeaveGroup(m.ifi, &gaddr); err != nil {
173 func TestIPSingleRawConnWithSingleGroupListener(t *testing.T) {
174 switch runtime.GOOS {
175 case "nacl", "plan9", "windows":
176 t.Skipf("not supported on %s", runtime.GOOS)
179 t.Skip("to avoid external network")
181 if m, ok := nettest.SupportsRawIPSocket(); !ok {
185 c, err := net.ListenPacket("ip4:icmp", "0.0.0.0") // wildcard address
191 r, err := ipv4.NewRawConn(c)
195 gaddr := net.IPAddr{IP: net.IPv4(224, 0, 0, 254)} // see RFC 4727
196 var mift []*net.Interface
198 ift, err := net.Interfaces()
202 for i, ifi := range ift {
203 if _, ok := nettest.IsMulticastCapable("ip4", &ifi); !ok {
206 if err := r.JoinGroup(&ifi, &gaddr); err != nil {
209 mift = append(mift, &ift[i])
211 for _, ifi := range mift {
212 if err := r.LeaveGroup(ifi, &gaddr); err != nil {
218 func TestIPPerInterfaceSingleRawConnWithSingleGroupListener(t *testing.T) {
219 switch runtime.GOOS {
220 case "nacl", "plan9", "windows":
221 t.Skipf("not supported on %s", runtime.GOOS)
224 t.Skip("to avoid external network")
226 if m, ok := nettest.SupportsRawIPSocket(); !ok {
230 gaddr := net.IPAddr{IP: net.IPv4(224, 0, 0, 254)} // see RFC 4727
237 ift, err := net.Interfaces()
241 for i, ifi := range ift {
242 ip, ok := nettest.IsMulticastCapable("ip4", &ifi)
246 c, err := net.ListenPacket("ip4:253", ip.String()) // unicast address
251 r, err := ipv4.NewRawConn(c)
255 if err := r.JoinGroup(&ifi, &gaddr); err != nil {
258 mlt = append(mlt, &ml{r, &ift[i]})
260 for _, m := range mlt {
261 if err := m.c.LeaveGroup(m.ifi, &gaddr); err != nil {