package net
import (
- "flag"
+ "errors"
"os"
"runtime"
+ "syscall"
"testing"
)
-var multicast = flag.Bool("multicast", false, "enable multicast tests")
-
-var joinAndLeaveGroupUDPTests = []struct {
+var multicastListenerTests = []struct {
net string
- laddr IP
- gaddr IP
+ gaddr *UDPAddr
flags Flags
- ipv6 bool
+ ipv6 bool // test with underlying AF_INET6 socket
}{
// cf. RFC 4727: Experimental Values in IPv4, IPv6, ICMPv4, ICMPv6, UDP, and TCP Headers
- {"udp", IPv4zero, IPv4(224, 0, 0, 254), (FlagUp | FlagLoopback), false},
- {"udp4", IPv4zero, IPv4(224, 0, 0, 254), (FlagUp | FlagLoopback), false},
- {"udp", IPv6unspecified, ParseIP("ff0e::114"), (FlagUp | FlagLoopback), true},
- {"udp6", IPv6unspecified, ParseIP("ff01::114"), (FlagUp | FlagLoopback), true},
- {"udp6", IPv6unspecified, ParseIP("ff02::114"), (FlagUp | FlagLoopback), true},
- {"udp6", IPv6unspecified, ParseIP("ff04::114"), (FlagUp | FlagLoopback), true},
- {"udp6", IPv6unspecified, ParseIP("ff05::114"), (FlagUp | FlagLoopback), true},
- {"udp6", IPv6unspecified, ParseIP("ff08::114"), (FlagUp | FlagLoopback), true},
- {"udp6", IPv6unspecified, ParseIP("ff0e::114"), (FlagUp | FlagLoopback), true},
+
+ {"udp", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, FlagUp | FlagLoopback, false},
+ {"udp", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, 0, false},
+ {"udp", &UDPAddr{ParseIP("ff0e::114"), 12345}, FlagUp | FlagLoopback, true},
+ {"udp", &UDPAddr{ParseIP("ff0e::114"), 12345}, 0, true},
+
+ {"udp4", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, FlagUp | FlagLoopback, false},
+ {"udp4", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, 0, false},
+
+ {"udp6", &UDPAddr{ParseIP("ff01::114"), 12345}, FlagUp | FlagLoopback, true},
+ {"udp6", &UDPAddr{ParseIP("ff01::114"), 12345}, 0, true},
+ {"udp6", &UDPAddr{ParseIP("ff02::114"), 12345}, FlagUp | FlagLoopback, true},
+ {"udp6", &UDPAddr{ParseIP("ff02::114"), 12345}, 0, true},
+ {"udp6", &UDPAddr{ParseIP("ff04::114"), 12345}, FlagUp | FlagLoopback, true},
+ {"udp6", &UDPAddr{ParseIP("ff04::114"), 12345}, 0, true},
+ {"udp6", &UDPAddr{ParseIP("ff05::114"), 12345}, FlagUp | FlagLoopback, true},
+ {"udp6", &UDPAddr{ParseIP("ff05::114"), 12345}, 0, true},
+ {"udp6", &UDPAddr{ParseIP("ff08::114"), 12345}, FlagUp | FlagLoopback, true},
+ {"udp6", &UDPAddr{ParseIP("ff08::114"), 12345}, 0, true},
+ {"udp6", &UDPAddr{ParseIP("ff0e::114"), 12345}, FlagUp | FlagLoopback, true},
+ {"udp6", &UDPAddr{ParseIP("ff0e::114"), 12345}, 0, true},
}
-func TestJoinAndLeaveGroupUDP(t *testing.T) {
- if runtime.GOOS == "windows" {
+// TestMulticastListener tests both single and double listen to a test
+// listener with same address family, same group address and same port.
+func TestMulticastListener(t *testing.T) {
+ switch runtime.GOOS {
+ case "netbsd", "openbsd", "plan9", "solaris", "windows":
+ t.Logf("skipping test on %q", runtime.GOOS)
return
+ case "linux":
+ if runtime.GOARCH == "arm" || runtime.GOARCH == "alpha" {
+ t.Logf("skipping test on %q/%q", runtime.GOOS, runtime.GOARCH)
+ return
+ }
+ }
+
+ for _, tt := range multicastListenerTests {
+ if tt.ipv6 && (!supportsIPv6 || os.Getuid() != 0) {
+ continue
+ }
+ ifi, err := availMulticastInterface(t, tt.flags)
+ if err != nil {
+ continue
+ }
+ c1, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
+ if err != nil {
+ t.Fatalf("First ListenMulticastUDP failed: %v", err)
+ }
+ checkMulticastListener(t, err, c1, tt.gaddr)
+ c2, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
+ if err != nil {
+ t.Fatalf("Second ListenMulticastUDP failed: %v", err)
+ }
+ checkMulticastListener(t, err, c2, tt.gaddr)
+ c2.Close()
+ switch c1.fd.family {
+ case syscall.AF_INET:
+ testIPv4MulticastSocketOptions(t, c1.fd, ifi)
+ case syscall.AF_INET6:
+ testIPv6MulticastSocketOptions(t, c1.fd, ifi)
+ }
+ c1.Close()
}
- if !*multicast {
- t.Logf("test disabled; use --multicast to enable")
+}
+
+func TestSimpleMulticastListener(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9":
+ t.Logf("skipping test on %q", runtime.GOOS)
return
+ case "windows":
+ if testing.Short() || !*testExternal {
+ t.Logf("skipping test on windows to avoid firewall")
+ return
+ }
}
- for _, tt := range joinAndLeaveGroupUDPTests {
- var (
- ifi *Interface
- found bool
- )
- if tt.ipv6 && (!supportsIPv6 || os.Getuid() != 0) {
+ for _, tt := range multicastListenerTests {
+ if tt.ipv6 {
continue
}
+ tt.flags = FlagUp | FlagMulticast // for windows testing
+ ifi, err := availMulticastInterface(t, tt.flags)
+ if err != nil {
+ continue
+ }
+ c1, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
+ if err != nil {
+ t.Fatalf("First ListenMulticastUDP failed: %v", err)
+ }
+ checkSimpleMulticastListener(t, err, c1, tt.gaddr)
+ c2, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
+ if err != nil {
+ t.Fatalf("Second ListenMulticastUDP failed: %v", err)
+ }
+ checkSimpleMulticastListener(t, err, c2, tt.gaddr)
+ c2.Close()
+ c1.Close()
+ }
+}
+
+func checkMulticastListener(t *testing.T, err error, c *UDPConn, gaddr *UDPAddr) {
+ if !multicastRIBContains(t, gaddr.IP) {
+ t.Fatalf("%q not found in RIB", gaddr.String())
+ }
+ if c.LocalAddr().String() != gaddr.String() {
+ t.Fatalf("LocalAddr returns %q, expected %q", c.LocalAddr().String(), gaddr.String())
+ }
+}
+
+func checkSimpleMulticastListener(t *testing.T, err error, c *UDPConn, gaddr *UDPAddr) {
+ if c.LocalAddr().String() != gaddr.String() {
+ t.Fatalf("LocalAddr returns %q, expected %q", c.LocalAddr().String(), gaddr.String())
+ }
+}
+
+func availMulticastInterface(t *testing.T, flags Flags) (*Interface, error) {
+ var ifi *Interface
+ if flags != Flags(0) {
ift, err := Interfaces()
if err != nil {
- t.Fatalf("Interfaces() failed: %v", err)
+ t.Fatalf("Interfaces failed: %v", err)
}
for _, x := range ift {
- if x.Flags&tt.flags == tt.flags {
+ if x.Flags&flags == flags {
ifi = &x
break
}
}
if ifi == nil {
- t.Logf("an appropriate multicast interface not found")
- return
- }
- c, err := ListenUDP(tt.net, &UDPAddr{IP: tt.laddr})
- if err != nil {
- t.Fatal(err)
- }
- defer c.Close()
- if err := c.JoinGroup(ifi, tt.gaddr); err != nil {
- t.Fatal(err)
+ return nil, errors.New("an appropriate multicast interface not found")
}
+ }
+ return ifi, nil
+}
+
+func multicastRIBContains(t *testing.T, ip IP) bool {
+ ift, err := Interfaces()
+ if err != nil {
+ t.Fatalf("Interfaces failed: %v", err)
+ }
+ for _, ifi := range ift {
ifmat, err := ifi.MulticastAddrs()
if err != nil {
- t.Fatalf("MulticastAddrs() failed: %v", err)
+ t.Fatalf("MulticastAddrs failed: %v", err)
}
for _, ifma := range ifmat {
- if ifma.(*IPAddr).IP.Equal(tt.gaddr) {
- found = true
- break
+ if ifma.(*IPAddr).IP.Equal(ip) {
+ return true
}
}
- if !found {
- t.Fatalf("%q not found in RIB", tt.gaddr.String())
+ }
+ return false
+}
+
+func testIPv4MulticastSocketOptions(t *testing.T, fd *netFD, ifi *Interface) {
+ _, err := ipv4MulticastInterface(fd)
+ if err != nil {
+ t.Fatalf("ipv4MulticastInterface failed: %v", err)
+ }
+ if ifi != nil {
+ err = setIPv4MulticastInterface(fd, ifi)
+ if err != nil {
+ t.Fatalf("setIPv4MulticastInterface failed: %v", err)
}
- if err := c.LeaveGroup(ifi, tt.gaddr); err != nil {
- t.Fatal(err)
+ }
+ _, err = ipv4MulticastTTL(fd)
+ if err != nil {
+ t.Fatalf("ipv4MulticastTTL failed: %v", err)
+ }
+ err = setIPv4MulticastTTL(fd, 1)
+ if err != nil {
+ t.Fatalf("setIPv4MulticastTTL failed: %v", err)
+ }
+ _, err = ipv4MulticastLoopback(fd)
+ if err != nil {
+ t.Fatalf("ipv4MulticastLoopback failed: %v", err)
+ }
+ err = setIPv4MulticastLoopback(fd, false)
+ if err != nil {
+ t.Fatalf("setIPv4MulticastLoopback failed: %v", err)
+ }
+}
+
+func testIPv6MulticastSocketOptions(t *testing.T, fd *netFD, ifi *Interface) {
+ _, err := ipv6MulticastInterface(fd)
+ if err != nil {
+ t.Fatalf("ipv6MulticastInterface failed: %v", err)
+ }
+ if ifi != nil {
+ err = setIPv6MulticastInterface(fd, ifi)
+ if err != nil {
+ t.Fatalf("setIPv6MulticastInterface failed: %v", err)
}
}
+ _, err = ipv6MulticastHopLimit(fd)
+ if err != nil {
+ t.Fatalf("ipv6MulticastHopLimit failed: %v", err)
+ }
+ err = setIPv6MulticastHopLimit(fd, 1)
+ if err != nil {
+ t.Fatalf("setIPv6MulticastHopLimit failed: %v", err)
+ }
+ _, err = ipv6MulticastLoopback(fd)
+ if err != nil {
+ t.Fatalf("ipv6MulticastLoopback failed: %v", err)
+ }
+ err = setIPv6MulticastLoopback(fd, false)
+ if err != nil {
+ t.Fatalf("setIPv6MulticastLoopback failed: %v", err)
+ }
}
projects / gcc.git / blobdiff