diff options
Diffstat (limited to 'vendor/github.com/miekg/dns/udp_test.go')
-rw-r--r-- | vendor/github.com/miekg/dns/udp_test.go | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/vendor/github.com/miekg/dns/udp_test.go b/vendor/github.com/miekg/dns/udp_test.go new file mode 100644 index 000000000..2c145dbf6 --- /dev/null +++ b/vendor/github.com/miekg/dns/udp_test.go @@ -0,0 +1,126 @@ +// +build linux,!appengine + +package dns + +import ( + "bytes" + "net" + "strings" + "testing" + "time" + + "golang.org/x/net/ipv4" + "golang.org/x/net/ipv6" +) + +func TestSetUDPSocketOptions(t *testing.T) { + // returns an error if we cannot resolve that address + testFamily := func(n, addr string) error { + a, err := net.ResolveUDPAddr(n, addr) + if err != nil { + return err + } + c, err := net.ListenUDP(n, a) + if err != nil { + return err + } + if err := setUDPSocketOptions(c); err != nil { + t.Fatalf("failed to set socket options: %v", err) + } + ch := make(chan *SessionUDP) + go func() { + // Set some deadline so this goroutine doesn't hang forever + c.SetReadDeadline(time.Now().Add(time.Minute)) + b := make([]byte, 1) + _, sess, err := ReadFromSessionUDP(c, b) + if err != nil { + t.Fatalf("failed to read from conn: %v", err) + } + ch <- sess + }() + + c2, err := net.Dial("udp", c.LocalAddr().String()) + if err != nil { + t.Fatalf("failed to dial udp: %v", err) + } + if _, err := c2.Write([]byte{1}); err != nil { + t.Fatalf("failed to write to conn: %v", err) + } + sess := <-ch + if len(sess.context) == 0 { + t.Fatalf("empty session context: %v", sess) + } + ip := parseDstFromOOB(sess.context) + if ip == nil { + t.Fatalf("failed to parse dst: %v", sess) + } + if !strings.Contains(c.LocalAddr().String(), ip.String()) { + t.Fatalf("dst was different than listen addr: %v != %v", ip.String(), c.LocalAddr().String()) + } + return nil + } + + // we require that ipv4 be supported + if err := testFamily("udp4", "127.0.0.1:0"); err != nil { + t.Fatalf("failed to test socket options on IPv4: %v", err) + } + // IPv6 might not be supported so these will just log + if err := testFamily("udp6", "[::1]:0"); err != nil { + t.Logf("failed to test socket options on IPv6-only: %v", err) + } + if err := testFamily("udp", "[::1]:0"); err != nil { + t.Logf("failed to test socket options on IPv6/IPv4: %v", err) + } +} + +func TestParseDstFromOOB(t *testing.T) { + // dst is :ffff:100.100.100.100 + oob := []byte{36, 0, 0, 0, 0, 0, 0, 0, 41, 0, 0, 0, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 100, 100, 100, 100, 2, 0, 0, 0} + dst := parseDstFromOOB(oob) + dst4 := dst.To4() + if dst4 == nil { + t.Errorf("failed to parse IPv4 in IPv6: %v", dst) + } else if dst4.String() != "100.100.100.100" { + t.Errorf("unexpected IPv4: %v", dst4) + } + + // dst is 2001:db8::1 + oob = []byte{36, 0, 0, 0, 0, 0, 0, 0, 41, 0, 0, 0, 50, 0, 0, 0, 32, 1, 13, 184, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0} + dst = parseDstFromOOB(oob) + dst6 := dst.To16() + if dst6 == nil { + t.Errorf("failed to parse IPv6: %v", dst) + } else if dst6.String() != "2001:db8::1" { + t.Errorf("unexpected IPv6: %v", dst4) + } + + // dst is 100.100.100.100 but was received on 10.10.10.10 + oob = []byte{28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 2, 0, 0, 0, 10, 10, 10, 10, 100, 100, 100, 100, 0, 0, 0, 0} + dst = parseDstFromOOB(oob) + dst4 = dst.To4() + if dst4 == nil { + t.Errorf("failed to parse IPv4: %v", dst) + } else if dst4.String() != "100.100.100.100" { + t.Errorf("unexpected IPv4: %v", dst4) + } +} + +func TestCorrectSource(t *testing.T) { + // dst is :ffff:100.100.100.100 which should be counted as IPv4 + oob := []byte{36, 0, 0, 0, 0, 0, 0, 0, 41, 0, 0, 0, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 100, 100, 100, 100, 2, 0, 0, 0} + soob := correctSource(oob) + cm4 := new(ipv4.ControlMessage) + cm4.Src = net.ParseIP("100.100.100.100") + if !bytes.Equal(soob, cm4.Marshal()) { + t.Errorf("unexpected oob for ipv4 address: %v", soob) + } + + // dst is 2001:db8::1 + oob = []byte{36, 0, 0, 0, 0, 0, 0, 0, 41, 0, 0, 0, 50, 0, 0, 0, 32, 1, 13, 184, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0} + soob = correctSource(oob) + cm6 := new(ipv6.ControlMessage) + cm6.Src = net.ParseIP("2001:db8::1") + if !bytes.Equal(soob, cm6.Marshal()) { + t.Errorf("unexpected oob for IPv6 address: %v", soob) + } +} |