1 // Copyright 2011 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.
15 var multicastListenerTests = []struct {
19 ipv6 bool // test with underlying AF_INET6 socket
21 // cf. RFC 4727: Experimental Values in IPv4, IPv6, ICMPv4, ICMPv6, UDP, and TCP Headers
23 {"udp", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, FlagUp | FlagLoopback, false},
24 {"udp", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, 0, false},
25 {"udp", &UDPAddr{ParseIP("ff0e::114"), 12345}, FlagUp | FlagLoopback, true},
26 {"udp", &UDPAddr{ParseIP("ff0e::114"), 12345}, 0, true},
28 {"udp4", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, FlagUp | FlagLoopback, false},
29 {"udp4", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, 0, false},
31 {"udp6", &UDPAddr{ParseIP("ff01::114"), 12345}, FlagUp | FlagLoopback, true},
32 {"udp6", &UDPAddr{ParseIP("ff01::114"), 12345}, 0, true},
33 {"udp6", &UDPAddr{ParseIP("ff02::114"), 12345}, FlagUp | FlagLoopback, true},
34 {"udp6", &UDPAddr{ParseIP("ff02::114"), 12345}, 0, true},
35 {"udp6", &UDPAddr{ParseIP("ff04::114"), 12345}, FlagUp | FlagLoopback, true},
36 {"udp6", &UDPAddr{ParseIP("ff04::114"), 12345}, 0, true},
37 {"udp6", &UDPAddr{ParseIP("ff05::114"), 12345}, FlagUp | FlagLoopback, true},
38 {"udp6", &UDPAddr{ParseIP("ff05::114"), 12345}, 0, true},
39 {"udp6", &UDPAddr{ParseIP("ff08::114"), 12345}, FlagUp | FlagLoopback, true},
40 {"udp6", &UDPAddr{ParseIP("ff08::114"), 12345}, 0, true},
41 {"udp6", &UDPAddr{ParseIP("ff0e::114"), 12345}, FlagUp | FlagLoopback, true},
42 {"udp6", &UDPAddr{ParseIP("ff0e::114"), 12345}, 0, true},
45 // TestMulticastListener tests both single and double listen to a test
46 // listener with same address family, same group address and same port.
47 func TestMulticastListener(t *testing.T) {
49 case "netbsd", "openbsd", "plan9", "solaris", "windows":
50 t.Logf("skipping test on %q", runtime.GOOS)
53 if runtime.GOARCH == "arm" || runtime.GOARCH == "alpha" {
54 t.Logf("skipping test on %q/%q", runtime.GOOS, runtime.GOARCH)
59 for _, tt := range multicastListenerTests {
60 if tt.ipv6 && (!supportsIPv6 || os.Getuid() != 0) {
63 ifi, err := availMulticastInterface(t, tt.flags)
67 c1, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
69 t.Fatalf("First ListenMulticastUDP failed: %v", err)
71 checkMulticastListener(t, err, c1, tt.gaddr)
72 c2, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
74 t.Fatalf("Second ListenMulticastUDP failed: %v", err)
76 checkMulticastListener(t, err, c2, tt.gaddr)
80 testIPv4MulticastSocketOptions(t, c1.fd, ifi)
81 case syscall.AF_INET6:
82 testIPv6MulticastSocketOptions(t, c1.fd, ifi)
88 func TestSimpleMulticastListener(t *testing.T) {
91 t.Logf("skipping test on %q", runtime.GOOS)
94 if testing.Short() || !*testExternal {
95 t.Logf("skipping test on windows to avoid firewall")
100 for _, tt := range multicastListenerTests {
104 tt.flags = FlagUp | FlagMulticast // for windows testing
105 ifi, err := availMulticastInterface(t, tt.flags)
109 c1, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
111 t.Fatalf("First ListenMulticastUDP failed: %v", err)
113 checkSimpleMulticastListener(t, err, c1, tt.gaddr)
114 c2, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
116 t.Fatalf("Second ListenMulticastUDP failed: %v", err)
118 checkSimpleMulticastListener(t, err, c2, tt.gaddr)
124 func checkMulticastListener(t *testing.T, err error, c *UDPConn, gaddr *UDPAddr) {
125 if !multicastRIBContains(t, gaddr.IP) {
126 t.Fatalf("%q not found in RIB", gaddr.String())
128 if c.LocalAddr().String() != gaddr.String() {
129 t.Fatalf("LocalAddr returns %q, expected %q", c.LocalAddr().String(), gaddr.String())
133 func checkSimpleMulticastListener(t *testing.T, err error, c *UDPConn, gaddr *UDPAddr) {
134 if c.LocalAddr().String() != gaddr.String() {
135 t.Fatalf("LocalAddr returns %q, expected %q", c.LocalAddr().String(), gaddr.String())
139 func availMulticastInterface(t *testing.T, flags Flags) (*Interface, error) {
141 if flags != Flags(0) {
142 ift, err := Interfaces()
144 t.Fatalf("Interfaces failed: %v", err)
146 for _, x := range ift {
147 if x.Flags&flags == flags {
153 return nil, errors.New("an appropriate multicast interface not found")
159 func multicastRIBContains(t *testing.T, ip IP) bool {
160 ift, err := Interfaces()
162 t.Fatalf("Interfaces failed: %v", err)
164 for _, ifi := range ift {
165 ifmat, err := ifi.MulticastAddrs()
167 t.Fatalf("MulticastAddrs failed: %v", err)
169 for _, ifma := range ifmat {
170 if ifma.(*IPAddr).IP.Equal(ip) {
178 func testIPv4MulticastSocketOptions(t *testing.T, fd *netFD, ifi *Interface) {
179 _, err := ipv4MulticastInterface(fd)
181 t.Fatalf("ipv4MulticastInterface failed: %v", err)
184 err = setIPv4MulticastInterface(fd, ifi)
186 t.Fatalf("setIPv4MulticastInterface failed: %v", err)
189 _, err = ipv4MulticastTTL(fd)
191 t.Fatalf("ipv4MulticastTTL failed: %v", err)
193 err = setIPv4MulticastTTL(fd, 1)
195 t.Fatalf("setIPv4MulticastTTL failed: %v", err)
197 _, err = ipv4MulticastLoopback(fd)
199 t.Fatalf("ipv4MulticastLoopback failed: %v", err)
201 err = setIPv4MulticastLoopback(fd, false)
203 t.Fatalf("setIPv4MulticastLoopback failed: %v", err)
207 func testIPv6MulticastSocketOptions(t *testing.T, fd *netFD, ifi *Interface) {
208 _, err := ipv6MulticastInterface(fd)
210 t.Fatalf("ipv6MulticastInterface failed: %v", err)
213 err = setIPv6MulticastInterface(fd, ifi)
215 t.Fatalf("setIPv6MulticastInterface failed: %v", err)
218 _, err = ipv6MulticastHopLimit(fd)
220 t.Fatalf("ipv6MulticastHopLimit failed: %v", err)
222 err = setIPv6MulticastHopLimit(fd, 1)
224 t.Fatalf("setIPv6MulticastHopLimit failed: %v", err)
226 _, err = ipv6MulticastLoopback(fd)
228 t.Fatalf("ipv6MulticastLoopback failed: %v", err)
230 err = setIPv6MulticastLoopback(fd, false)
232 t.Fatalf("setIPv6MulticastLoopback failed: %v", err)