github.com/lianghucheng/zrddz@v0.0.0-20200923083010-c71f680932e2/src/golang.org/x/net/ipv6/unicastsockopt_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  	"net"
     9  	"runtime"
    10  	"testing"
    11  
    12  	"golang.org/x/net/internal/iana"
    13  	"golang.org/x/net/ipv6"
    14  	"golang.org/x/net/nettest"
    15  )
    16  
    17  func TestConnUnicastSocketOptions(t *testing.T) {
    18  	switch runtime.GOOS {
    19  	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
    20  		t.Skipf("not supported on %s", runtime.GOOS)
    21  	}
    22  	if !nettest.SupportsIPv6() {
    23  		t.Skip("ipv6 is not supported")
    24  	}
    25  
    26  	ln, err := net.Listen("tcp6", "[::1]:0")
    27  	if err != nil {
    28  		t.Fatal(err)
    29  	}
    30  	defer ln.Close()
    31  
    32  	errc := make(chan error, 1)
    33  	go func() {
    34  		c, err := ln.Accept()
    35  		if err != nil {
    36  			errc <- err
    37  			return
    38  		}
    39  		errc <- c.Close()
    40  	}()
    41  
    42  	c, err := net.Dial("tcp6", ln.Addr().String())
    43  	if err != nil {
    44  		t.Fatal(err)
    45  	}
    46  	defer c.Close()
    47  
    48  	testUnicastSocketOptions(t, ipv6.NewConn(c))
    49  
    50  	if err := <-errc; err != nil {
    51  		t.Errorf("server: %v", err)
    52  	}
    53  }
    54  
    55  var packetConnUnicastSocketOptionTests = []struct {
    56  	net, proto, addr string
    57  }{
    58  	{"udp6", "", "[::1]:0"},
    59  	{"ip6", ":ipv6-icmp", "::1"},
    60  }
    61  
    62  func TestPacketConnUnicastSocketOptions(t *testing.T) {
    63  	switch runtime.GOOS {
    64  	case "fuchsia", "hurd", "js", "nacl", "plan9", "windows":
    65  		t.Skipf("not supported on %s", runtime.GOOS)
    66  	}
    67  	if !nettest.SupportsIPv6() {
    68  		t.Skip("ipv6 is not supported")
    69  	}
    70  
    71  	ok := nettest.SupportsRawSocket()
    72  	for _, tt := range packetConnUnicastSocketOptionTests {
    73  		if tt.net == "ip6" && !ok {
    74  			t.Logf("not supported on %s/%s", runtime.GOOS, runtime.GOARCH)
    75  			continue
    76  		}
    77  		c, err := net.ListenPacket(tt.net+tt.proto, tt.addr)
    78  		if err != nil {
    79  			t.Fatal(err)
    80  		}
    81  		defer c.Close()
    82  
    83  		testUnicastSocketOptions(t, ipv6.NewPacketConn(c))
    84  	}
    85  }
    86  
    87  type testIPv6UnicastConn interface {
    88  	TrafficClass() (int, error)
    89  	SetTrafficClass(int) error
    90  	HopLimit() (int, error)
    91  	SetHopLimit(int) error
    92  }
    93  
    94  func testUnicastSocketOptions(t *testing.T, c testIPv6UnicastConn) {
    95  	t.Helper()
    96  
    97  	tclass := iana.DiffServCS0 | iana.NotECNTransport
    98  	if err := c.SetTrafficClass(tclass); err != nil {
    99  		switch runtime.GOOS {
   100  		case "darwin": // older darwin kernels don't support IPV6_TCLASS option
   101  			t.Logf("not supported on %s", runtime.GOOS)
   102  			goto next
   103  		}
   104  		t.Fatal(err)
   105  	}
   106  	if v, err := c.TrafficClass(); err != nil {
   107  		t.Fatal(err)
   108  	} else if v != tclass {
   109  		t.Fatalf("got %v; want %v", v, tclass)
   110  	}
   111  
   112  next:
   113  	hoplim := 255
   114  	if err := c.SetHopLimit(hoplim); err != nil {
   115  		t.Fatal(err)
   116  	}
   117  	if v, err := c.HopLimit(); err != nil {
   118  		t.Fatal(err)
   119  	} else if v != hoplim {
   120  		t.Fatalf("got %v; want %v", v, hoplim)
   121  	}
   122  }