github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/net/ipv6/multicast_test.go (about)

     1  // Copyright 2013 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package ipv6_test
     6  
     7  import (
     8  	"bytes"
     9  	"net"
    10  	"os"
    11  	"runtime"
    12  	"testing"
    13  	"time"
    14  
    15  	"golang.org/x/net/icmp"
    16  	"golang.org/x/net/internal/iana"
    17  	"golang.org/x/net/internal/nettest"
    18  	"golang.org/x/net/ipv6"
    19  )
    20  
    21  var packetConnReadWriteMulticastUDPTests = []struct {
    22  	addr     string
    23  	grp, src *net.UDPAddr
    24  }{
    25  	{"[ff02::]:0", &net.UDPAddr{IP: net.ParseIP("ff02::114")}, nil}, // see RFC 4727
    26  
    27  	{"[ff30::8000:0]:0", &net.UDPAddr{IP: net.ParseIP("ff30::8000:1")}, &net.UDPAddr{IP: net.IPv6loopback}}, // see RFC 5771
    28  }
    29  
    30  func TestPacketConnReadWriteMulticastUDP(t *testing.T) {
    31  	switch runtime.GOOS {
    32  	case "freebsd": // due to a bug on loopback marking
    33  		// See http://www.freebsd.org/cgi/query-pr.cgi?pr=180065.
    34  		t.Skipf("not supported on %s", runtime.GOOS)
    35  	case "nacl", "plan9", "solaris", "windows":
    36  		t.Skipf("not supported on %s", runtime.GOOS)
    37  	}
    38  	if !supportsIPv6 {
    39  		t.Skip("ipv6 is not supported")
    40  	}
    41  	ifi := nettest.RoutedInterface("ip6", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
    42  	if ifi == nil {
    43  		t.Skipf("not available on %s", runtime.GOOS)
    44  	}
    45  
    46  	for _, tt := range packetConnReadWriteMulticastUDPTests {
    47  		c, err := net.ListenPacket("udp6", tt.addr)
    48  		if err != nil {
    49  			t.Fatal(err)
    50  		}
    51  		defer c.Close()
    52  
    53  		grp := *tt.grp
    54  		grp.Port = c.LocalAddr().(*net.UDPAddr).Port
    55  		p := ipv6.NewPacketConn(c)
    56  		defer p.Close()
    57  		if tt.src == nil {
    58  			if err := p.JoinGroup(ifi, &grp); err != nil {
    59  				t.Fatal(err)
    60  			}
    61  			defer p.LeaveGroup(ifi, &grp)
    62  		} else {
    63  			if err := p.JoinSourceSpecificGroup(ifi, &grp, tt.src); err != nil {
    64  				switch runtime.GOOS {
    65  				case "freebsd", "linux":
    66  				default: // platforms that don't support MLDv2 fail here
    67  					t.Logf("not supported on %s", runtime.GOOS)
    68  					continue
    69  				}
    70  				t.Fatal(err)
    71  			}
    72  			defer p.LeaveSourceSpecificGroup(ifi, &grp, tt.src)
    73  		}
    74  		if err := p.SetMulticastInterface(ifi); err != nil {
    75  			t.Fatal(err)
    76  		}
    77  		if _, err := p.MulticastInterface(); err != nil {
    78  			t.Fatal(err)
    79  		}
    80  		if err := p.SetMulticastLoopback(true); err != nil {
    81  			t.Fatal(err)
    82  		}
    83  		if _, err := p.MulticastLoopback(); err != nil {
    84  			t.Fatal(err)
    85  		}
    86  
    87  		cm := ipv6.ControlMessage{
    88  			TrafficClass: iana.DiffServAF11 | iana.CongestionExperienced,
    89  			Src:          net.IPv6loopback,
    90  			IfIndex:      ifi.Index,
    91  		}
    92  		cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagSrc | ipv6.FlagDst | ipv6.FlagInterface | ipv6.FlagPathMTU
    93  		wb := []byte("HELLO-R-U-THERE")
    94  
    95  		for i, toggle := range []bool{true, false, true} {
    96  			if err := p.SetControlMessage(cf, toggle); err != nil {
    97  				if nettest.ProtocolNotSupported(err) {
    98  					t.Logf("not supported on %s", runtime.GOOS)
    99  					continue
   100  				}
   101  				t.Fatal(err)
   102  			}
   103  			if err := p.SetDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
   104  				t.Fatal(err)
   105  			}
   106  			cm.HopLimit = i + 1
   107  			if n, err := p.WriteTo(wb, &cm, &grp); err != nil {
   108  				t.Fatal(err)
   109  			} else if n != len(wb) {
   110  				t.Fatal(err)
   111  			}
   112  			rb := make([]byte, 128)
   113  			if n, _, _, err := p.ReadFrom(rb); err != nil {
   114  				t.Fatal(err)
   115  			} else if !bytes.Equal(rb[:n], wb) {
   116  				t.Fatalf("got %v; want %v", rb[:n], wb)
   117  			}
   118  		}
   119  	}
   120  }
   121  
   122  var packetConnReadWriteMulticastICMPTests = []struct {
   123  	grp, src *net.IPAddr
   124  }{
   125  	{&net.IPAddr{IP: net.ParseIP("ff02::114")}, nil}, // see RFC 4727
   126  
   127  	{&net.IPAddr{IP: net.ParseIP("ff30::8000:1")}, &net.IPAddr{IP: net.IPv6loopback}}, // see RFC 5771
   128  }
   129  
   130  func TestPacketConnReadWriteMulticastICMP(t *testing.T) {
   131  	switch runtime.GOOS {
   132  	case "freebsd": // due to a bug on loopback marking
   133  		// See http://www.freebsd.org/cgi/query-pr.cgi?pr=180065.
   134  		t.Skipf("not supported on %s", runtime.GOOS)
   135  	case "nacl", "plan9", "solaris", "windows":
   136  		t.Skipf("not supported on %s", runtime.GOOS)
   137  	}
   138  	if !supportsIPv6 {
   139  		t.Skip("ipv6 is not supported")
   140  	}
   141  	if m, ok := nettest.SupportsRawIPSocket(); !ok {
   142  		t.Skip(m)
   143  	}
   144  	ifi := nettest.RoutedInterface("ip6", net.FlagUp|net.FlagMulticast|net.FlagLoopback)
   145  	if ifi == nil {
   146  		t.Skipf("not available on %s", runtime.GOOS)
   147  	}
   148  
   149  	for _, tt := range packetConnReadWriteMulticastICMPTests {
   150  		c, err := net.ListenPacket("ip6:ipv6-icmp", "::")
   151  		if err != nil {
   152  			t.Fatal(err)
   153  		}
   154  		defer c.Close()
   155  
   156  		pshicmp := icmp.IPv6PseudoHeader(c.LocalAddr().(*net.IPAddr).IP, tt.grp.IP)
   157  		p := ipv6.NewPacketConn(c)
   158  		defer p.Close()
   159  		if tt.src == nil {
   160  			if err := p.JoinGroup(ifi, tt.grp); err != nil {
   161  				t.Fatal(err)
   162  			}
   163  			defer p.LeaveGroup(ifi, tt.grp)
   164  		} else {
   165  			if err := p.JoinSourceSpecificGroup(ifi, tt.grp, tt.src); err != nil {
   166  				switch runtime.GOOS {
   167  				case "freebsd", "linux":
   168  				default: // platforms that don't support MLDv2 fail here
   169  					t.Logf("not supported on %s", runtime.GOOS)
   170  					continue
   171  				}
   172  				t.Fatal(err)
   173  			}
   174  			defer p.LeaveSourceSpecificGroup(ifi, tt.grp, tt.src)
   175  		}
   176  		if err := p.SetMulticastInterface(ifi); err != nil {
   177  			t.Fatal(err)
   178  		}
   179  		if _, err := p.MulticastInterface(); err != nil {
   180  			t.Fatal(err)
   181  		}
   182  		if err := p.SetMulticastLoopback(true); err != nil {
   183  			t.Fatal(err)
   184  		}
   185  		if _, err := p.MulticastLoopback(); err != nil {
   186  			t.Fatal(err)
   187  		}
   188  
   189  		cm := ipv6.ControlMessage{
   190  			TrafficClass: iana.DiffServAF11 | iana.CongestionExperienced,
   191  			Src:          net.IPv6loopback,
   192  			IfIndex:      ifi.Index,
   193  		}
   194  		cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagSrc | ipv6.FlagDst | ipv6.FlagInterface | ipv6.FlagPathMTU
   195  
   196  		var f ipv6.ICMPFilter
   197  		f.SetAll(true)
   198  		f.Accept(ipv6.ICMPTypeEchoReply)
   199  		if err := p.SetICMPFilter(&f); err != nil {
   200  			t.Fatal(err)
   201  		}
   202  
   203  		var psh []byte
   204  		for i, toggle := range []bool{true, false, true} {
   205  			if toggle {
   206  				psh = nil
   207  				if err := p.SetChecksum(true, 2); err != nil {
   208  					t.Fatal(err)
   209  				}
   210  			} else {
   211  				psh = pshicmp
   212  				// Some platforms never allow to
   213  				// disable the kernel checksum
   214  				// processing.
   215  				p.SetChecksum(false, -1)
   216  			}
   217  			wb, err := (&icmp.Message{
   218  				Type: ipv6.ICMPTypeEchoRequest, Code: 0,
   219  				Body: &icmp.Echo{
   220  					ID: os.Getpid() & 0xffff, Seq: i + 1,
   221  					Data: []byte("HELLO-R-U-THERE"),
   222  				},
   223  			}).Marshal(psh)
   224  			if err != nil {
   225  				t.Fatal(err)
   226  			}
   227  			if err := p.SetControlMessage(cf, toggle); err != nil {
   228  				if nettest.ProtocolNotSupported(err) {
   229  					t.Logf("not supported on %s", runtime.GOOS)
   230  					continue
   231  				}
   232  				t.Fatal(err)
   233  			}
   234  			if err := p.SetDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
   235  				t.Fatal(err)
   236  			}
   237  			cm.HopLimit = i + 1
   238  			if n, err := p.WriteTo(wb, &cm, tt.grp); err != nil {
   239  				t.Fatal(err)
   240  			} else if n != len(wb) {
   241  				t.Fatalf("got %v; want %v", n, len(wb))
   242  			}
   243  			rb := make([]byte, 128)
   244  			if n, _, _, err := p.ReadFrom(rb); err != nil {
   245  				switch runtime.GOOS {
   246  				case "darwin": // older darwin kernels have some limitation on receiving icmp packet through raw socket
   247  					t.Logf("not supported on %s", runtime.GOOS)
   248  					continue
   249  				}
   250  				t.Fatal(err)
   251  			} else {
   252  				if m, err := icmp.ParseMessage(iana.ProtocolIPv6ICMP, rb[:n]); err != nil {
   253  					t.Fatal(err)
   254  				} else if m.Type != ipv6.ICMPTypeEchoReply || m.Code != 0 {
   255  					t.Fatalf("got type=%v, code=%v; want type=%v, code=%v", m.Type, m.Code, ipv6.ICMPTypeEchoReply, 0)
   256  				}
   257  			}
   258  		}
   259  	}
   260  }