/usr/share/gocode/src/code.google.com/p/go.net/ipv4/multicastlistener_test.go is in golang-go.net-dev 0.0~hg20131201-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin freebsd linux netbsd openbsd
package ipv4_test
import (
"code.google.com/p/go.net/ipv4"
"net"
"os"
"testing"
)
var udpMultipleGroupListenerTests = []struct {
gaddr *net.UDPAddr
}{
{&net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}}, // see RFC 4727
{&net.UDPAddr{IP: net.IPv4(224, 0, 0, 250)}}, // see RFC 4727
{&net.UDPAddr{IP: net.IPv4(224, 0, 0, 254)}}, // see RFC 4727
}
func TestUDPSingleConnWithMultipleGroupListeners(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("to avoid external network")
}
for _, tt := range udpMultipleGroupListenerTests {
// listen to a wildcard address with no reusable port
c, err := net.ListenPacket("udp4", "0.0.0.0:0")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
p := ipv4.NewPacketConn(c)
var mift []*net.Interface
ift, err := net.Interfaces()
if err != nil {
t.Fatalf("net.Interfaces failed: %v", err)
}
for i, ifi := range ift {
if _, ok := isMulticastAvailable(&ifi); !ok {
continue
}
if err := p.JoinGroup(&ifi, tt.gaddr); err != nil {
t.Fatalf("ipv4.PacketConn.JoinGroup %v on %v failed: %v", tt.gaddr, ifi, err)
}
mift = append(mift, &ift[i])
}
for _, ifi := range mift {
if err := p.LeaveGroup(ifi, tt.gaddr); err != nil {
t.Fatalf("ipv4.PacketConn.LeaveGroup %v on %v failed: %v", tt.gaddr, ifi, err)
}
}
}
}
func TestUDPMultipleConnWithMultipleGroupListeners(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("to avoid external network")
}
for _, tt := range udpMultipleGroupListenerTests {
// listen to a group address, actually a wildcard address
// with reusable port
c1, err := net.ListenPacket("udp4", "224.0.0.0:1024") // see RFC 4727
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c1.Close()
c2, err := net.ListenPacket("udp4", "224.0.0.0:1024") // see RFC 4727
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c2.Close()
var ps [2]*ipv4.PacketConn
ps[0] = ipv4.NewPacketConn(c1)
ps[1] = ipv4.NewPacketConn(c2)
var mift []*net.Interface
ift, err := net.Interfaces()
if err != nil {
t.Fatalf("net.Interfaces failed: %v", err)
}
for i, ifi := range ift {
if _, ok := isMulticastAvailable(&ifi); !ok {
continue
}
for _, p := range ps {
if err := p.JoinGroup(&ifi, tt.gaddr); err != nil {
t.Fatalf("ipv4.PacketConn.JoinGroup %v on %v failed: %v", tt.gaddr, ifi, err)
}
}
mift = append(mift, &ift[i])
}
for _, ifi := range mift {
for _, p := range ps {
if err := p.LeaveGroup(ifi, tt.gaddr); err != nil {
t.Fatalf("ipv4.PacketConn.LeaveGroup %v on %v failed: %v", tt.gaddr, ifi, err)
}
}
}
}
}
func TestIPSingleConnWithSingleGroupListener(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("to avoid external network")
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
// listen to a wildcard address
c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
if err != nil {
t.Fatalf("net.ListenPacket failed: %v", err)
}
defer c.Close()
r, err := ipv4.NewRawConn(c)
if err != nil {
t.Fatalf("ipv4.RawConn failed: %v", err)
}
gaddr := &net.IPAddr{IP: net.IPv4(224, 0, 0, 254)} // see RFC 4727
var mift []*net.Interface
ift, err := net.Interfaces()
if err != nil {
t.Fatalf("net.Interfaces failed: %v", err)
}
for i, ifi := range ift {
if _, ok := isMulticastAvailable(&ifi); !ok {
continue
}
if err := r.JoinGroup(&ifi, gaddr); err != nil {
t.Fatalf("ipv4.RawConn.JoinGroup on %v failed: %v", ifi, err)
}
mift = append(mift, &ift[i])
}
for _, ifi := range mift {
if err := r.LeaveGroup(ifi, gaddr); err != nil {
t.Fatalf("ipv4.RawConn.LeaveGroup on %v failed: %v", ifi, err)
}
}
}
func TestUDPPerInterfaceSingleConnWithSingleGroupListener(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("to avoid external network")
}
gaddr := &net.IPAddr{IP: net.IPv4(224, 0, 0, 254)} // see RFC 4727
type ml struct {
c *ipv4.PacketConn
ifi *net.Interface
}
var mlt []*ml
ift, err := net.Interfaces()
if err != nil {
t.Fatalf("net.Interfaces failed: %v", err)
}
for i, ifi := range ift {
ip, ok := isMulticastAvailable(&ifi)
if !ok {
continue
}
// listen to a unicast interface address
c, err := net.ListenPacket("udp4", ip.String()+":"+"1024") // see RFC 4727
if err != nil {
t.Fatalf("net.ListenPacket with %v failed: %v", ip, err)
}
defer c.Close()
p := ipv4.NewPacketConn(c)
if err := p.JoinGroup(&ifi, gaddr); err != nil {
t.Fatalf("ipv4.PacketConn.JoinGroup on %v failed: %v", ifi, err)
}
mlt = append(mlt, &ml{p, &ift[i]})
}
for _, m := range mlt {
if err := m.c.LeaveGroup(m.ifi, gaddr); err != nil {
t.Fatalf("ipv4.PacketConn.LeaveGroup on %v failed: %v", m.ifi, err)
}
}
}
func TestIPPerInterfaceSingleConnWithSingleGroupListener(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("to avoid external network")
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
gaddr := &net.IPAddr{IP: net.IPv4(224, 0, 0, 254)} // see RFC 4727
type ml struct {
c *ipv4.RawConn
ifi *net.Interface
}
var mlt []*ml
ift, err := net.Interfaces()
if err != nil {
t.Fatalf("net.Interfaces failed: %v", err)
}
for i, ifi := range ift {
ip, ok := isMulticastAvailable(&ifi)
if !ok {
continue
}
// listen to a unicast interface address
c, err := net.ListenPacket("ip4:253", ip.String()) // see RFC 4727
if err != nil {
t.Fatalf("net.ListenPacket with %v failed: %v", ip, err)
}
defer c.Close()
r, err := ipv4.NewRawConn(c)
if err != nil {
t.Fatalf("ipv4.NewRawConn failed: %v", err)
}
if err := r.JoinGroup(&ifi, gaddr); err != nil {
t.Fatalf("ipv4.RawConn.JoinGroup on %v failed: %v", ifi, err)
}
mlt = append(mlt, &ml{r, &ift[i]})
}
for _, m := range mlt {
if err := m.c.LeaveGroup(m.ifi, gaddr); err != nil {
t.Fatalf("ipv4.RawConn.LeaveGroup on %v failed: %v", m.ifi, err)
}
}
}
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