bump(code.google.com/p/go.net): ca4c826193c2

third_party/code.google.com/p/go.net/ipv4/multicastsockopt_test.go

@@ -0,0 +1,126 @@
+// Copyright 2012 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.
+
+// +build darwin freebsd linux netbsd openbsd windows
+
+package ipv4_test
+
+import (
+	"code.google.com/p/go.net/ipv4"
+	"net"
+	"os"
+	"runtime"
+	"testing"
+)
+
+type testMulticastConn interface {
+	testUnicastConn
+	MulticastTTL() (int, error)
+	SetMulticastTTL(ttl int) error
+	MulticastLoopback() (bool, error)
+	SetMulticastLoopback(bool) error
+	JoinGroup(*net.Interface, net.Addr) error
+	LeaveGroup(*net.Interface, net.Addr) error
+}
+
+type multicastSockoptTest struct {
+	tos    int
+	ttl    int
+	mcttl  int
+	mcloop bool
+	gaddr  net.IP
+}
+
+var multicastSockoptTests = []multicastSockoptTest{
+	{DiffServCS0 | NotECNTransport, 127, 128, false, net.IPv4(224, 0, 0, 249)}, // see RFC 4727
+	{DiffServAF11 | NotECNTransport, 255, 254, true, net.IPv4(224, 0, 0, 250)}, // see RFC 4727
+}
+
+func TestUDPMulticastSockopt(t *testing.T) {
+	if testing.Short() || !*testExternal {
+		t.Skip("to avoid external network")
+	}
+
+	for _, tt := range multicastSockoptTests {
+		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)
+		testMulticastSockopt(t, tt, p, &net.UDPAddr{IP: tt.gaddr})
+	}
+}
+
+func TestIPMulticastSockopt(t *testing.T) {
+	if testing.Short() || !*testExternal {
+		t.Skip("to avoid external network")
+	}
+	if os.Getuid() != 0 {
+		t.Skip("must be root")
+	}
+
+	for _, tt := range multicastSockoptTests {
+		c, err := net.ListenPacket("ip4:icmp", "0.0.0.0")
+		if err != nil {
+			t.Fatalf("net.ListenPacket failed: %v", err)
+		}
+		defer c.Close()
+
+		r, _ := ipv4.NewRawConn(c)
+		testMulticastSockopt(t, tt, r, &net.IPAddr{IP: tt.gaddr})
+	}
+}
+
+func testMulticastSockopt(t *testing.T, tt multicastSockoptTest, c testMulticastConn, gaddr net.Addr) {
+	switch runtime.GOOS {
+	case "windows":
+		// IP_TOS option is supported on Windows 8 and beyond.
+		t.Logf("skipping IP_TOS test on %q", runtime.GOOS)
+	default:
+		if err := c.SetTOS(tt.tos); err != nil {
+			t.Fatalf("ipv4.PacketConn.SetTOS failed: %v", err)
+		}
+		if v, err := c.TOS(); err != nil {
+			t.Fatalf("ipv4.PacketConn.TOS failed: %v", err)
+		} else if v != tt.tos {
+			t.Fatalf("Got unexpected TOS value %v; expected %v", v, tt.tos)
+		}
+	}
+
+	if err := c.SetTTL(tt.ttl); err != nil {
+		t.Fatalf("ipv4.PacketConn.SetTTL failed: %v", err)
+	}
+	if v, err := c.TTL(); err != nil {
+		t.Fatalf("ipv4.PacketConn.TTL failed: %v", err)
+	} else if v != tt.ttl {
+		t.Fatalf("Got unexpected TTL value %v; expected %v", v, tt.ttl)
+	}
+
+	if err := c.SetMulticastTTL(tt.mcttl); err != nil {
+		t.Fatalf("ipv4.PacketConn.SetMulticastTTL failed: %v", err)
+	}
+	if v, err := c.MulticastTTL(); err != nil {
+		t.Fatalf("ipv4.PacketConn.MulticastTTL failed: %v", err)
+	} else if v != tt.mcttl {
+		t.Fatalf("Got unexpected MulticastTTL value %v; expected %v", v, tt.mcttl)
+	}
+
+	if err := c.SetMulticastLoopback(tt.mcloop); err != nil {
+		t.Fatalf("ipv4.PacketConn.SetMulticastLoopback failed: %v", err)
+	}
+	if v, err := c.MulticastLoopback(); err != nil {
+		t.Fatalf("ipv4.PacketConn.MulticastLoopback failed: %v", err)
+	} else if v != tt.mcloop {
+		t.Fatalf("Got unexpected MulticastLoopback value %v; expected %v", v, tt.mcloop)
+	}
+
+	if err := c.JoinGroup(nil, gaddr); err != nil {
+		t.Fatalf("ipv4.PacketConn.JoinGroup(%v) failed: %v", gaddr, err)
+	}
+	if err := c.LeaveGroup(nil, gaddr); err != nil {
+		t.Fatalf("ipv4.PacketConn.LeaveGroup(%v) failed: %v", gaddr, err)
+	}
+}