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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package net
import (
"os"
"runtime"
"testing"
)
var listenMulticastUDPTests = []struct {
net string
gaddr *UDPAddr
flags Flags
ipv6 bool
}{
// cf. RFC 4727: Experimental Values in IPv4, IPv6, ICMPv4, ICMPv6, UDP, and TCP Headers
{"udp", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, FlagUp | FlagLoopback, false},
{"udp4", &UDPAddr{IPv4(224, 0, 0, 254), 12345}, FlagUp | FlagLoopback, false},
{"udp", &UDPAddr{ParseIP("ff0e::114"), 12345}, FlagUp | FlagLoopback, true},
{"udp6", &UDPAddr{ParseIP("ff01::114"), 12345}, FlagUp | FlagLoopback, true},
{"udp6", &UDPAddr{ParseIP("ff02::114"), 12345}, FlagUp | FlagLoopback, true},
{"udp6", &UDPAddr{ParseIP("ff04::114"), 12345}, FlagUp | FlagLoopback, true},
{"udp6", &UDPAddr{ParseIP("ff05::114"), 12345}, FlagUp | FlagLoopback, true},
{"udp6", &UDPAddr{ParseIP("ff08::114"), 12345}, FlagUp | FlagLoopback, true},
{"udp6", &UDPAddr{ParseIP("ff0e::114"), 12345}, FlagUp | FlagLoopback, true},
}
func TestListenMulticastUDP(t *testing.T) {
switch runtime.GOOS {
case "netbsd", "openbsd", "plan9", "windows":
return
case "linux":
if runtime.GOARCH == "arm" {
return
}
}
for _, tt := range listenMulticastUDPTests {
if tt.ipv6 && (!supportsIPv6 || os.Getuid() != 0) {
continue
}
ift, err := Interfaces()
if err != nil {
t.Fatalf("Interfaces failed: %v", err)
}
var ifi *Interface
for _, x := range ift {
if x.Flags&tt.flags == tt.flags {
ifi = &x
break
}
}
if ifi == nil {
t.Logf("an appropriate multicast interface not found")
return
}
c, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
if err != nil {
t.Fatalf("ListenMulticastUDP failed: %v", err)
}
defer c.Close() // test to listen concurrently across multiple listeners
if !tt.ipv6 {
testIPv4MulticastSocketOptions(t, c.fd, ifi)
} else {
testIPv6MulticastSocketOptions(t, c.fd, ifi)
}
ifmat, err := ifi.MulticastAddrs()
if err != nil {
t.Fatalf("MulticastAddrs failed: %v", err)
}
var found bool
for _, ifma := range ifmat {
if ifma.(*IPAddr).IP.Equal(tt.gaddr.IP) {
found = true
break
}
}
if !found {
t.Fatalf("%q not found in RIB", tt.gaddr.String())
}
}
}
func TestSimpleListenMulticastUDP(t *testing.T) {
switch runtime.GOOS {
case "plan9":
return
}
for _, tt := range listenMulticastUDPTests {
if tt.ipv6 {
continue
}
tt.flags = FlagUp | FlagMulticast
ift, err := Interfaces()
if err != nil {
t.Fatalf("Interfaces failed: %v", err)
}
var ifi *Interface
for _, x := range ift {
if x.Flags&tt.flags == tt.flags {
ifi = &x
break
}
}
if ifi == nil {
t.Logf("an appropriate multicast interface not found")
return
}
c, err := ListenMulticastUDP(tt.net, ifi, tt.gaddr)
if err != nil {
t.Fatalf("ListenMulticastUDP failed: %v", err)
}
c.Close()
}
}
func testIPv4MulticastSocketOptions(t *testing.T, fd *netFD, ifi *Interface) {
ifmc, err := ipv4MulticastInterface(fd)
if err != nil {
t.Fatalf("ipv4MulticastInterface failed: %v", err)
}
t.Logf("IPv4 multicast interface: %v", ifmc)
err = setIPv4MulticastInterface(fd, ifi)
if err != nil {
t.Fatalf("setIPv4MulticastInterface failed: %v", err)
}
ttl, err := ipv4MulticastTTL(fd)
if err != nil {
t.Fatalf("ipv4MulticastTTL failed: %v", err)
}
t.Logf("IPv4 multicast TTL: %v", ttl)
err = setIPv4MulticastTTL(fd, 1)
if err != nil {
t.Fatalf("setIPv4MulticastTTL failed: %v", err)
}
loop, err := ipv4MulticastLoopback(fd)
if err != nil {
t.Fatalf("ipv4MulticastLoopback failed: %v", err)
}
t.Logf("IPv4 multicast loopback: %v", loop)
err = setIPv4MulticastLoopback(fd, false)
if err != nil {
t.Fatalf("setIPv4MulticastLoopback failed: %v", err)
}
}
func testIPv6MulticastSocketOptions(t *testing.T, fd *netFD, ifi *Interface) {
ifmc, err := ipv6MulticastInterface(fd)
if err != nil {
t.Fatalf("ipv6MulticastInterface failed: %v", err)
}
t.Logf("IPv6 multicast interface: %v", ifmc)
err = setIPv6MulticastInterface(fd, ifi)
if err != nil {
t.Fatalf("setIPv6MulticastInterface failed: %v", err)
}
hoplim, err := ipv6MulticastHopLimit(fd)
if err != nil {
t.Fatalf("ipv6MulticastHopLimit failed: %v", err)
}
t.Logf("IPv6 multicast hop limit: %v", hoplim)
err = setIPv6MulticastHopLimit(fd, 1)
if err != nil {
t.Fatalf("setIPv6MulticastHopLimit failed: %v", err)
}
loop, err := ipv6MulticastLoopback(fd)
if err != nil {
t.Fatalf("ipv6MulticastLoopback failed: %v", err)
}
t.Logf("IPv6 multicast loopback: %v", loop)
err = setIPv6MulticastLoopback(fd, false)
if err != nil {
t.Fatalf("setIPv6MulticastLoopback failed: %v", err)
}
}
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