go.net/ipv6: new package
Package ipv6 implements IP-level socket options for the Internet
Protocol version 6. It also provides datagram based network I/O
methods specific to the IPv6 and higher layer protocols.
Fixes golang/go#5538.
R=dave
CC=golang-dev
https://golang.org/cl/9843044
diff --git a/ipv6/multicastsockopt_test.go b/ipv6/multicastsockopt_test.go
new file mode 100644
index 0000000..21fc32c
--- /dev/null
+++ b/ipv6/multicastsockopt_test.go
@@ -0,0 +1,73 @@
+// Copyright 2013 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 ipv6_test
+
+import (
+ "code.google.com/p/go.net/ipv6"
+ "net"
+ "os"
+ "runtime"
+ "testing"
+)
+
+var packetConnMulticastSocketOptionTests = []struct {
+ net, proto, addr string
+ gaddr net.Addr
+}{
+ {"udp6", "", "[ff02::]:0", &net.UDPAddr{IP: net.ParseIP("ff02::114")}}, // see RFC 4727
+ {"ip6", ":ipv6-icmp", "::", &net.IPAddr{IP: net.ParseIP("ff02::114")}}, // see RFC 4727
+}
+
+func TestPacketConnMulticastSocketOptions(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9", "windows":
+ t.Skipf("not supported on %q", runtime.GOOS)
+ }
+ ifi := loopbackInterface()
+ if ifi == nil {
+ t.Skipf("not available on %q", runtime.GOOS)
+ }
+
+ for _, tt := range packetConnMulticastSocketOptionTests {
+ if tt.net == "ip6" && os.Getuid() != 0 {
+ t.Skip("must be root")
+ }
+ c, err := net.ListenPacket(tt.net+tt.proto, tt.addr)
+ if err != nil {
+ t.Fatalf("net.ListenPacket failed: %v", err)
+ }
+ defer c.Close()
+
+ p := ipv6.NewPacketConn(c)
+
+ hoplim := 255
+ if err := p.SetMulticastHopLimit(hoplim); err != nil {
+ t.Fatalf("ipv6.PacketConn.SetMulticastHopLimit failed: %v", err)
+ }
+ if v, err := p.MulticastHopLimit(); err != nil {
+ t.Fatalf("ipv6.PacketConn.MulticastHopLimit failed: %v", err)
+ } else if v != hoplim {
+ t.Fatalf("got unexpected multicast hop limit %v; expected %v", v, hoplim)
+ }
+
+ for _, toggle := range []bool{true, false} {
+ if err := p.SetMulticastLoopback(toggle); err != nil {
+ t.Fatalf("ipv6.PacketConn.SetMulticastLoopback failed: %v", err)
+ }
+ if v, err := p.MulticastLoopback(); err != nil {
+ t.Fatalf("ipv6.PacketConn.MulticastLoopback failed: %v", err)
+ } else if v != toggle {
+ t.Fatalf("got unexpected multicast loopback %v; expected %v", v, toggle)
+ }
+ }
+
+ if err := p.JoinGroup(ifi, tt.gaddr); err != nil {
+ t.Fatalf("ipv6.PacketConn.JoinGroup(%v, %v) failed: %v", ifi, tt.gaddr, err)
+ }
+ if err := p.LeaveGroup(ifi, tt.gaddr); err != nil {
+ t.Fatalf("ipv6.PacketConn.LeaveGroup(%v, %v) failed: %v", ifi, tt.gaddr, err)
+ }
+ }
+}
