// Copyright 2009 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 net import ( "bytes" "math/rand" "reflect" "runtime" "testing" ) var parseIPTests = []struct { in string out IP }{ {"127.0.1.2", IPv4(127, 0, 1, 2)}, {"127.0.0.1", IPv4(127, 0, 0, 1)}, {"::ffff:127.1.2.3", IPv4(127, 1, 2, 3)}, {"::ffff:7f01:0203", IPv4(127, 1, 2, 3)}, {"0:0:0:0:0000:ffff:127.1.2.3", IPv4(127, 1, 2, 3)}, {"0:0:0:0::ffff:127.1.2.3", IPv4(127, 1, 2, 3)}, {"2001:4860:0:2001::68", IP{0x20, 0x01, 0x48, 0x60, 0, 0, 0x20, 0x01, 0, 0, 0, 0, 0, 0, 0x00, 0x68}}, {"2001:4860:0000:2001:0000:0000:0000:0068", IP{0x20, 0x01, 0x48, 0x60, 0, 0, 0x20, 0x01, 0, 0, 0, 0, 0, 0, 0x00, 0x68}}, {"-0.0.0.0", nil}, {"0.-1.0.0", nil}, {"0.0.-2.0", nil}, {"0.0.0.-3", nil}, {"127.0.0.256", nil}, {"abc", nil}, {"123:", nil}, {"fe80::1%lo0", nil}, {"fe80::1%911", nil}, {"", nil}, //6 zeroes in one group {"0:0:0:0:000000:ffff:127.1.2.3", nil}, //5 zeroes in one group edge case {"0:0:0:0:00000:ffff:127.1.2.3", nil}, {"a1:a2:a3:a4::b1:b2:b3:b4", nil}, // Issue 6628 {"127.001.002.003", nil}, {"::ffff:127.001.002.003", nil}, {"123.000.000.000", nil}, {"1.2..4", nil}, {"0123.0.0.1", nil}, } func TestParseIP(t *testing.T) { for _, tt := range parseIPTests { if out := ParseIP(tt.in); !reflect.DeepEqual(out, tt.out) { t.Errorf("ParseIP(%q) = %v, want %v", tt.in, out, tt.out) } if tt.in == "" { // Tested in TestMarshalEmptyIP below. continue } var out IP if err := out.UnmarshalText([]byte(tt.in)); !reflect.DeepEqual(out, tt.out) || (tt.out == nil) != (err != nil) { t.Errorf("IP.UnmarshalText(%q) = %v, %v, want %v", tt.in, out, err, tt.out) } } } func TestLookupWithIP(t *testing.T) { _, err := LookupIP("") if err == nil { t.Errorf(`LookupIP("") succeeded, should fail`) } _, err = LookupHost("") if err == nil { t.Errorf(`LookupIP("") succeeded, should fail`) } // Test that LookupHost and LookupIP, which normally // expect host names, work with IP addresses. for _, tt := range parseIPTests { if tt.out != nil { addrs, err := LookupHost(tt.in) if len(addrs) != 1 || addrs[0] != tt.in || err != nil { t.Errorf("LookupHost(%q) = %v, %v, want %v, nil", tt.in, addrs, err, []string{tt.in}) } } else if !testing.Short() { // We can't control what the host resolver does; if it can resolve, say, // 127.0.0.256 or fe80::1%911 or a host named 'abc', who are we to judge? // Warn about these discrepancies but don't fail the test. addrs, err := LookupHost(tt.in) if err == nil { t.Logf("warning: LookupHost(%q) = %v, want error", tt.in, addrs) } } if tt.out != nil { ips, err := LookupIP(tt.in) if len(ips) != 1 || !reflect.DeepEqual(ips[0], tt.out) || err != nil { t.Errorf("LookupIP(%q) = %v, %v, want %v, nil", tt.in, ips, err, []IP{tt.out}) } } else if !testing.Short() { ips, err := LookupIP(tt.in) // We can't control what the host resolver does. See above. if err == nil { t.Logf("warning: LookupIP(%q) = %v, want error", tt.in, ips) } } } } func BenchmarkParseIP(b *testing.B) { testHookUninstaller.Do(uninstallTestHooks) for i := 0; i < b.N; i++ { for _, tt := range parseIPTests { ParseIP(tt.in) } } } func BenchmarkParseIPValidIPv4(b *testing.B) { testHookUninstaller.Do(uninstallTestHooks) for i := 0; i < b.N; i++ { ParseIP("192.0.2.1") } } func BenchmarkParseIPValidIPv6(b *testing.B) { testHookUninstaller.Do(uninstallTestHooks) for i := 0; i < b.N; i++ { ParseIP("2001:DB8::1") } } // Issue 6339 func TestMarshalEmptyIP(t *testing.T) { for _, in := range [][]byte{nil, []byte("")} { var out = IP{1, 2, 3, 4} if err := out.UnmarshalText(in); err != nil || out != nil { t.Errorf("UnmarshalText(%v) = %v, %v; want nil, nil", in, out, err) } } var ip IP got, err := ip.MarshalText() if err != nil { t.Fatal(err) } if !reflect.DeepEqual(got, []byte("")) { t.Errorf(`got %#v, want []byte("")`, got) } } var ipStringTests = []*struct { in IP // see RFC 791 and RFC 4291 str string // see RFC 791, RFC 4291 and RFC 5952 byt []byte error }{ // IPv4 address { IP{192, 0, 2, 1}, "192.0.2.1", []byte("192.0.2.1"), nil, }, { IP{0, 0, 0, 0}, "0.0.0.0", []byte("0.0.0.0"), nil, }, // IPv4-mapped IPv6 address { IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 192, 0, 2, 1}, "192.0.2.1", []byte("192.0.2.1"), nil, }, { IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0, 0, 0, 0}, "0.0.0.0", []byte("0.0.0.0"), nil, }, // IPv6 address { IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0x1, 0x23, 0, 0x12, 0, 0x1}, "2001:db8::123:12:1", []byte("2001:db8::123:12:1"), nil, }, { IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x1}, "2001:db8::1", []byte("2001:db8::1"), nil, }, { IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0x1, 0, 0, 0, 0x1, 0, 0, 0, 0x1}, "2001:db8:0:1:0:1:0:1", []byte("2001:db8:0:1:0:1:0:1"), nil, }, { IP{0x20, 0x1, 0xd, 0xb8, 0, 0x1, 0, 0, 0, 0x1, 0, 0, 0, 0x1, 0, 0}, "2001:db8:1:0:1:0:1:0", []byte("2001:db8:1:0:1:0:1:0"), nil, }, { IP{0x20, 0x1, 0, 0, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0x1}, "2001::1:0:0:1", []byte("2001::1:0:0:1"), nil, }, { IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0}, "2001:db8:0:0:1::", []byte("2001:db8:0:0:1::"), nil, }, { IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0x1}, "2001:db8::1:0:0:1", []byte("2001:db8::1:0:0:1"), nil, }, { IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0xa, 0, 0xb, 0, 0xc, 0, 0xd}, "2001:db8::a:b:c:d", []byte("2001:db8::a:b:c:d"), nil, }, { IPv6unspecified, "::", []byte("::"), nil, }, // IP wildcard equivalent address in Dial/Listen API { nil, "", nil, nil, }, // Opaque byte sequence { IP{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef}, "?0123456789abcdef", nil, &AddrError{Err: "invalid IP address", Addr: "0123456789abcdef"}, }, } func TestIPString(t *testing.T) { for _, tt := range ipStringTests { if out := tt.in.String(); out != tt.str { t.Errorf("IP.String(%v) = %q, want %q", tt.in, out, tt.str) } if out, err := tt.in.MarshalText(); !bytes.Equal(out, tt.byt) || !reflect.DeepEqual(err, tt.error) { t.Errorf("IP.MarshalText(%v) = %v, %v, want %v, %v", tt.in, out, err, tt.byt, tt.error) } } } var sink string func BenchmarkIPString(b *testing.B) { testHookUninstaller.Do(uninstallTestHooks) b.Run("IPv4", func(b *testing.B) { benchmarkIPString(b, IPv4len) }) b.Run("IPv6", func(b *testing.B) { benchmarkIPString(b, IPv6len) }) } func benchmarkIPString(b *testing.B, size int) { b.ReportAllocs() b.ResetTimer() for i := 0; i < b.N; i++ { for _, tt := range ipStringTests { if tt.in != nil && len(tt.in) == size { sink = tt.in.String() } } } } var ipMaskTests = []struct { in IP mask IPMask out IP }{ {IPv4(192, 168, 1, 127), IPv4Mask(255, 255, 255, 128), IPv4(192, 168, 1, 0)}, {IPv4(192, 168, 1, 127), IPMask(ParseIP("255.255.255.192")), IPv4(192, 168, 1, 64)}, {IPv4(192, 168, 1, 127), IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffe0")), IPv4(192, 168, 1, 96)}, {IPv4(192, 168, 1, 127), IPv4Mask(255, 0, 255, 0), IPv4(192, 0, 1, 0)}, {ParseIP("2001:db8::1"), IPMask(ParseIP("ffff:ff80::")), ParseIP("2001:d80::")}, {ParseIP("2001:db8::1"), IPMask(ParseIP("f0f0:0f0f::")), ParseIP("2000:d08::")}, } func TestIPMask(t *testing.T) { for _, tt := range ipMaskTests { if out := tt.in.Mask(tt.mask); out == nil || !tt.out.Equal(out) { t.Errorf("IP(%v).Mask(%v) = %v, want %v", tt.in, tt.mask, out, tt.out) } } } var ipMaskStringTests = []struct { in IPMask out string }{ {IPv4Mask(255, 255, 255, 240), "fffffff0"}, {IPv4Mask(255, 0, 128, 0), "ff008000"}, {IPMask(ParseIP("ffff:ff80::")), "ffffff80000000000000000000000000"}, {IPMask(ParseIP("ef00:ff80::cafe:0")), "ef00ff800000000000000000cafe0000"}, {nil, ""}, } func TestIPMaskString(t *testing.T) { for _, tt := range ipMaskStringTests { if out := tt.in.String(); out != tt.out { t.Errorf("IPMask.String(%v) = %q, want %q", tt.in, out, tt.out) } } } func BenchmarkIPMaskString(b *testing.B) { testHookUninstaller.Do(uninstallTestHooks) for i := 0; i < b.N; i++ { for _, tt := range ipMaskStringTests { sink = tt.in.String() } } } var parseCIDRTests = []struct { in string ip IP net *IPNet err error }{ {"135.104.0.0/32", IPv4(135, 104, 0, 0), &IPNet{IP: IPv4(135, 104, 0, 0), Mask: IPv4Mask(255, 255, 255, 255)}, nil}, {"0.0.0.0/24", IPv4(0, 0, 0, 0), &IPNet{IP: IPv4(0, 0, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)}, nil}, {"135.104.0.0/24", IPv4(135, 104, 0, 0), &IPNet{IP: IPv4(135, 104, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)}, nil}, {"135.104.0.1/32", IPv4(135, 104, 0, 1), &IPNet{IP: IPv4(135, 104, 0, 1), Mask: IPv4Mask(255, 255, 255, 255)}, nil}, {"135.104.0.1/24", IPv4(135, 104, 0, 1), &IPNet{IP: IPv4(135, 104, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)}, nil}, {"::1/128", ParseIP("::1"), &IPNet{IP: ParseIP("::1"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"))}, nil}, {"abcd:2345::/127", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe"))}, nil}, {"abcd:2345::/65", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:8000::"))}, nil}, {"abcd:2345::/64", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff::"))}, nil}, {"abcd:2345::/63", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:fffe::"))}, nil}, {"abcd:2345::/33", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:8000::"))}, nil}, {"abcd:2345::/32", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff::"))}, nil}, {"abcd:2344::/31", ParseIP("abcd:2344::"), &IPNet{IP: ParseIP("abcd:2344::"), Mask: IPMask(ParseIP("ffff:fffe::"))}, nil}, {"abcd:2300::/24", ParseIP("abcd:2300::"), &IPNet{IP: ParseIP("abcd:2300::"), Mask: IPMask(ParseIP("ffff:ff00::"))}, nil}, {"abcd:2345::/24", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2300::"), Mask: IPMask(ParseIP("ffff:ff00::"))}, nil}, {"2001:DB8::/48", ParseIP("2001:DB8::"), &IPNet{IP: ParseIP("2001:DB8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff::"))}, nil}, {"2001:DB8::1/48", ParseIP("2001:DB8::1"), &IPNet{IP: ParseIP("2001:DB8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff::"))}, nil}, {"192.168.1.1/255.255.255.0", nil, nil, &ParseError{Type: "CIDR address", Text: "192.168.1.1/255.255.255.0"}}, {"192.168.1.1/35", nil, nil, &ParseError{Type: "CIDR address", Text: "192.168.1.1/35"}}, {"2001:db8::1/-1", nil, nil, &ParseError{Type: "CIDR address", Text: "2001:db8::1/-1"}}, {"2001:db8::1/-0", nil, nil, &ParseError{Type: "CIDR address", Text: "2001:db8::1/-0"}}, {"-0.0.0.0/32", nil, nil, &ParseError{Type: "CIDR address", Text: "-0.0.0.0/32"}}, {"0.-1.0.0/32", nil, nil, &ParseError{Type: "CIDR address", Text: "0.-1.0.0/32"}}, {"0.0.-2.0/32", nil, nil, &ParseError{Type: "CIDR address", Text: "0.0.-2.0/32"}}, {"0.0.0.-3/32", nil, nil, &ParseError{Type: "CIDR address", Text: "0.0.0.-3/32"}}, {"0.0.0.0/-0", nil, nil, &ParseError{Type: "CIDR address", Text: "0.0.0.0/-0"}}, {"127.000.000.001/32", nil, nil, &ParseError{Type: "CIDR address", Text: "127.000.000.001/32"}}, {"", nil, nil, &ParseError{Type: "CIDR address", Text: ""}}, } func TestParseCIDR(t *testing.T) { for _, tt := range parseCIDRTests { ip, net, err := ParseCIDR(tt.in) if !reflect.DeepEqual(err, tt.err) { t.Errorf("ParseCIDR(%q) = %v, %v; want %v, %v", tt.in, ip, net, tt.ip, tt.net) } if err == nil && (!tt.ip.Equal(ip) || !tt.net.IP.Equal(net.IP) || !reflect.DeepEqual(net.Mask, tt.net.Mask)) { t.Errorf("ParseCIDR(%q) = %v, {%v, %v}; want %v, {%v, %v}", tt.in, ip, net.IP, net.Mask, tt.ip, tt.net.IP, tt.net.Mask) } } } var ipNetContainsTests = []struct { ip IP net *IPNet ok bool }{ {IPv4(172, 16, 1, 1), &IPNet{IP: IPv4(172, 16, 0, 0), Mask: CIDRMask(12, 32)}, true}, {IPv4(172, 24, 0, 1), &IPNet{IP: IPv4(172, 16, 0, 0), Mask: CIDRMask(13, 32)}, false}, {IPv4(192, 168, 0, 3), &IPNet{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(0, 0, 255, 252)}, true}, {IPv4(192, 168, 0, 4), &IPNet{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(0, 255, 0, 252)}, false}, {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:1::"), Mask: CIDRMask(47, 128)}, true}, {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:2::"), Mask: CIDRMask(47, 128)}, false}, {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:1::"), Mask: IPMask(ParseIP("ffff:0:ffff::"))}, true}, {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:1::"), Mask: IPMask(ParseIP("0:0:0:ffff::"))}, false}, } func TestIPNetContains(t *testing.T) { for _, tt := range ipNetContainsTests { if ok := tt.net.Contains(tt.ip); ok != tt.ok { t.Errorf("IPNet(%v).Contains(%v) = %v, want %v", tt.net, tt.ip, ok, tt.ok) } } } var ipNetStringTests = []struct { in *IPNet out string }{ {&IPNet{IP: IPv4(192, 168, 1, 0), Mask: CIDRMask(26, 32)}, "192.168.1.0/26"}, {&IPNet{IP: IPv4(192, 168, 1, 0), Mask: IPv4Mask(255, 0, 255, 0)}, "192.168.1.0/ff00ff00"}, {&IPNet{IP: ParseIP("2001:db8::"), Mask: CIDRMask(55, 128)}, "2001:db8::/55"}, {&IPNet{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("8000:f123:0:cafe::"))}, "2001:db8::/8000f1230000cafe0000000000000000"}, {nil, ""}, } func TestIPNetString(t *testing.T) { for _, tt := range ipNetStringTests { if out := tt.in.String(); out != tt.out { t.Errorf("IPNet.String(%v) = %q, want %q", tt.in, out, tt.out) } } } var cidrMaskTests = []struct { ones int bits int out IPMask }{ {0, 32, IPv4Mask(0, 0, 0, 0)}, {12, 32, IPv4Mask(255, 240, 0, 0)}, {24, 32, IPv4Mask(255, 255, 255, 0)}, {32, 32, IPv4Mask(255, 255, 255, 255)}, {0, 128, IPMask{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, {4, 128, IPMask{0xf0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, {48, 128, IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, {128, 128, IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}}, {33, 32, nil}, {32, 33, nil}, {-1, 128, nil}, {128, -1, nil}, } func TestCIDRMask(t *testing.T) { for _, tt := range cidrMaskTests { if out := CIDRMask(tt.ones, tt.bits); !reflect.DeepEqual(out, tt.out) { t.Errorf("CIDRMask(%v, %v) = %v, want %v", tt.ones, tt.bits, out, tt.out) } } } var ( v4addr = IP{192, 168, 0, 1} v4mappedv6addr = IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 192, 168, 0, 1} v6addr = IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0x1, 0x23, 0, 0x12, 0, 0x1} v4mask = IPMask{255, 255, 255, 0} v4mappedv6mask = IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 255, 255, 255, 0} v6mask = IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0} badaddr = IP{192, 168, 0} badmask = IPMask{255, 255, 0} v4maskzero = IPMask{0, 0, 0, 0} ) var networkNumberAndMaskTests = []struct { in IPNet out IPNet }{ {IPNet{IP: v4addr, Mask: v4mask}, IPNet{IP: v4addr, Mask: v4mask}}, {IPNet{IP: v4addr, Mask: v4mappedv6mask}, IPNet{IP: v4addr, Mask: v4mask}}, {IPNet{IP: v4mappedv6addr, Mask: v4mappedv6mask}, IPNet{IP: v4addr, Mask: v4mask}}, {IPNet{IP: v4mappedv6addr, Mask: v6mask}, IPNet{IP: v4addr, Mask: v4maskzero}}, {IPNet{IP: v4addr, Mask: v6mask}, IPNet{IP: v4addr, Mask: v4maskzero}}, {IPNet{IP: v6addr, Mask: v6mask}, IPNet{IP: v6addr, Mask: v6mask}}, {IPNet{IP: v6addr, Mask: v4mappedv6mask}, IPNet{IP: v6addr, Mask: v4mappedv6mask}}, {in: IPNet{IP: v6addr, Mask: v4mask}}, {in: IPNet{IP: v4addr, Mask: badmask}}, {in: IPNet{IP: v4mappedv6addr, Mask: badmask}}, {in: IPNet{IP: v6addr, Mask: badmask}}, {in: IPNet{IP: badaddr, Mask: v4mask}}, {in: IPNet{IP: badaddr, Mask: v4mappedv6mask}}, {in: IPNet{IP: badaddr, Mask: v6mask}}, {in: IPNet{IP: badaddr, Mask: badmask}}, } func TestNetworkNumberAndMask(t *testing.T) { for _, tt := range networkNumberAndMaskTests { ip, m := networkNumberAndMask(&tt.in) out := &IPNet{IP: ip, Mask: m} if !reflect.DeepEqual(&tt.out, out) { t.Errorf("networkNumberAndMask(%v) = %v, want %v", tt.in, out, &tt.out) } } } func TestSplitHostPort(t *testing.T) { for _, tt := range []struct { hostPort string host string port string }{ // Host name {"localhost:http", "localhost", "http"}, {"localhost:80", "localhost", "80"}, // Go-specific host name with zone identifier {"localhost%lo0:http", "localhost%lo0", "http"}, {"localhost%lo0:80", "localhost%lo0", "80"}, {"[localhost%lo0]:http", "localhost%lo0", "http"}, // Go 1 behavior {"[localhost%lo0]:80", "localhost%lo0", "80"}, // Go 1 behavior // IP literal {"127.0.0.1:http", "127.0.0.1", "http"}, {"127.0.0.1:80", "127.0.0.1", "80"}, {"[::1]:http", "::1", "http"}, {"[::1]:80", "::1", "80"}, // IP literal with zone identifier {"[::1%lo0]:http", "::1%lo0", "http"}, {"[::1%lo0]:80", "::1%lo0", "80"}, // Go-specific wildcard for host name {":http", "", "http"}, // Go 1 behavior {":80", "", "80"}, // Go 1 behavior // Go-specific wildcard for service name or transport port number {"golang.org:", "golang.org", ""}, // Go 1 behavior {"127.0.0.1:", "127.0.0.1", ""}, // Go 1 behavior {"[::1]:", "::1", ""}, // Go 1 behavior // Opaque service name {"golang.org:https%foo", "golang.org", "https%foo"}, // Go 1 behavior } { if host, port, err := SplitHostPort(tt.hostPort); host != tt.host || port != tt.port || err != nil { t.Errorf("SplitHostPort(%q) = %q, %q, %v; want %q, %q, nil", tt.hostPort, host, port, err, tt.host, tt.port) } } for _, tt := range []struct { hostPort string err string }{ {"golang.org", "missing port in address"}, {"127.0.0.1", "missing port in address"}, {"[::1]", "missing port in address"}, {"[fe80::1%lo0]", "missing port in address"}, {"[localhost%lo0]", "missing port in address"}, {"localhost%lo0", "missing port in address"}, {"::1", "too many colons in address"}, {"fe80::1%lo0", "too many colons in address"}, {"fe80::1%lo0:80", "too many colons in address"}, // Test cases that didn't fail in Go 1 {"[foo:bar]", "missing port in address"}, {"[foo:bar]baz", "missing port in address"}, {"[foo]bar:baz", "missing port in address"}, {"[foo]:[bar]:baz", "too many colons in address"}, {"[foo]:[bar]baz", "unexpected '[' in address"}, {"foo[bar]:baz", "unexpected '[' in address"}, {"foo]bar:baz", "unexpected ']' in address"}, } { if host, port, err := SplitHostPort(tt.hostPort); err == nil { t.Errorf("SplitHostPort(%q) should have failed", tt.hostPort) } else { e := err.(*AddrError) if e.Err != tt.err { t.Errorf("SplitHostPort(%q) = _, _, %q; want %q", tt.hostPort, e.Err, tt.err) } if host != "" || port != "" { t.Errorf("SplitHostPort(%q) = %q, %q, err; want %q, %q, err on failure", tt.hostPort, host, port, "", "") } } } } func TestJoinHostPort(t *testing.T) { for _, tt := range []struct { host string port string hostPort string }{ // Host name {"localhost", "http", "localhost:http"}, {"localhost", "80", "localhost:80"}, // Go-specific host name with zone identifier {"localhost%lo0", "http", "localhost%lo0:http"}, {"localhost%lo0", "80", "localhost%lo0:80"}, // IP literal {"127.0.0.1", "http", "127.0.0.1:http"}, {"127.0.0.1", "80", "127.0.0.1:80"}, {"::1", "http", "[::1]:http"}, {"::1", "80", "[::1]:80"}, // IP literal with zone identifier {"::1%lo0", "http", "[::1%lo0]:http"}, {"::1%lo0", "80", "[::1%lo0]:80"}, // Go-specific wildcard for host name {"", "http", ":http"}, // Go 1 behavior {"", "80", ":80"}, // Go 1 behavior // Go-specific wildcard for service name or transport port number {"golang.org", "", "golang.org:"}, // Go 1 behavior {"127.0.0.1", "", "127.0.0.1:"}, // Go 1 behavior {"::1", "", "[::1]:"}, // Go 1 behavior // Opaque service name {"golang.org", "https%foo", "golang.org:https%foo"}, // Go 1 behavior } { if hostPort := JoinHostPort(tt.host, tt.port); hostPort != tt.hostPort { t.Errorf("JoinHostPort(%q, %q) = %q; want %q", tt.host, tt.port, hostPort, tt.hostPort) } } } var ipAddrFamilyTests = []struct { in IP af4 bool af6 bool }{ {IPv4bcast, true, false}, {IPv4allsys, true, false}, {IPv4allrouter, true, false}, {IPv4zero, true, false}, {IPv4(224, 0, 0, 1), true, false}, {IPv4(127, 0, 0, 1), true, false}, {IPv4(240, 0, 0, 1), true, false}, {IPv6unspecified, false, true}, {IPv6loopback, false, true}, {IPv6interfacelocalallnodes, false, true}, {IPv6linklocalallnodes, false, true}, {IPv6linklocalallrouters, false, true}, {ParseIP("ff05::a:b:c:d"), false, true}, {ParseIP("fe80::1:2:3:4"), false, true}, {ParseIP("2001:db8::123:12:1"), false, true}, } func TestIPAddrFamily(t *testing.T) { for _, tt := range ipAddrFamilyTests { if af := tt.in.To4() != nil; af != tt.af4 { t.Errorf("verifying IPv4 address family for %q = %v, want %v", tt.in, af, tt.af4) } if af := len(tt.in) == IPv6len && tt.in.To4() == nil; af != tt.af6 { t.Errorf("verifying IPv6 address family for %q = %v, want %v", tt.in, af, tt.af6) } } } var ipAddrScopeTests = []struct { scope func(IP) bool in IP ok bool }{ {IP.IsUnspecified, IPv4zero, true}, {IP.IsUnspecified, IPv4(127, 0, 0, 1), false}, {IP.IsUnspecified, IPv6unspecified, true}, {IP.IsUnspecified, IPv6interfacelocalallnodes, false}, {IP.IsUnspecified, nil, false}, {IP.IsLoopback, IPv4(127, 0, 0, 1), true}, {IP.IsLoopback, IPv4(127, 255, 255, 254), true}, {IP.IsLoopback, IPv4(128, 1, 2, 3), false}, {IP.IsLoopback, IPv6loopback, true}, {IP.IsLoopback, IPv6linklocalallrouters, false}, {IP.IsLoopback, nil, false}, {IP.IsMulticast, IPv4(224, 0, 0, 0), true}, {IP.IsMulticast, IPv4(239, 0, 0, 0), true}, {IP.IsMulticast, IPv4(240, 0, 0, 0), false}, {IP.IsMulticast, IPv6linklocalallnodes, true}, {IP.IsMulticast, IP{0xff, 0x05, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, true}, {IP.IsMulticast, IP{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false}, {IP.IsMulticast, nil, false}, {IP.IsInterfaceLocalMulticast, IPv4(224, 0, 0, 0), false}, {IP.IsInterfaceLocalMulticast, IPv4(0xff, 0x01, 0, 0), false}, {IP.IsInterfaceLocalMulticast, IPv6interfacelocalallnodes, true}, {IP.IsInterfaceLocalMulticast, nil, false}, {IP.IsLinkLocalMulticast, IPv4(224, 0, 0, 0), true}, {IP.IsLinkLocalMulticast, IPv4(239, 0, 0, 0), false}, {IP.IsLinkLocalMulticast, IPv4(0xff, 0x02, 0, 0), false}, {IP.IsLinkLocalMulticast, IPv6linklocalallrouters, true}, {IP.IsLinkLocalMulticast, IP{0xff, 0x05, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false}, {IP.IsLinkLocalMulticast, nil, false}, {IP.IsLinkLocalUnicast, IPv4(169, 254, 0, 0), true}, {IP.IsLinkLocalUnicast, IPv4(169, 255, 0, 0), false}, {IP.IsLinkLocalUnicast, IPv4(0xfe, 0x80, 0, 0), false}, {IP.IsLinkLocalUnicast, IP{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, true}, {IP.IsLinkLocalUnicast, IP{0xfe, 0xc0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false}, {IP.IsLinkLocalUnicast, nil, false}, {IP.IsGlobalUnicast, IPv4(240, 0, 0, 0), true}, {IP.IsGlobalUnicast, IPv4(232, 0, 0, 0), false}, {IP.IsGlobalUnicast, IPv4(169, 254, 0, 0), false}, {IP.IsGlobalUnicast, IPv4bcast, false}, {IP.IsGlobalUnicast, IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0x1, 0x23, 0, 0x12, 0, 0x1}, true}, {IP.IsGlobalUnicast, IP{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false}, {IP.IsGlobalUnicast, IP{0xff, 0x05, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false}, {IP.IsGlobalUnicast, nil, false}, {IP.IsPrivate, nil, false}, {IP.IsPrivate, IPv4(1, 1, 1, 1), false}, {IP.IsPrivate, IPv4(9, 255, 255, 255), false}, {IP.IsPrivate, IPv4(10, 0, 0, 0), true}, {IP.IsPrivate, IPv4(10, 255, 255, 255), true}, {IP.IsPrivate, IPv4(11, 0, 0, 0), false}, {IP.IsPrivate, IPv4(172, 15, 255, 255), false}, {IP.IsPrivate, IPv4(172, 16, 0, 0), true}, {IP.IsPrivate, IPv4(172, 16, 255, 255), true}, {IP.IsPrivate, IPv4(172, 23, 18, 255), true}, {IP.IsPrivate, IPv4(172, 31, 255, 255), true}, {IP.IsPrivate, IPv4(172, 31, 0, 0), true}, {IP.IsPrivate, IPv4(172, 32, 0, 0), false}, {IP.IsPrivate, IPv4(192, 167, 255, 255), false}, {IP.IsPrivate, IPv4(192, 168, 0, 0), true}, {IP.IsPrivate, IPv4(192, 168, 255, 255), true}, {IP.IsPrivate, IPv4(192, 169, 0, 0), false}, {IP.IsPrivate, IP{0xfb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, false}, {IP.IsPrivate, IP{0xfc, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, true}, {IP.IsPrivate, IP{0xfc, 0xff, 0x12, 0, 0, 0, 0, 0x44, 0, 0, 0, 0, 0, 0, 0, 0}, true}, {IP.IsPrivate, IP{0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, true}, {IP.IsPrivate, IP{0xfe, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false}, } func name(f any) string { return runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name() } func TestIPAddrScope(t *testing.T) { for _, tt := range ipAddrScopeTests { if ok := tt.scope(tt.in); ok != tt.ok { t.Errorf("%s(%q) = %v, want %v", name(tt.scope), tt.in, ok, tt.ok) } ip := tt.in.To4() if ip == nil { continue } if ok := tt.scope(ip); ok != tt.ok { t.Errorf("%s(%q) = %v, want %v", name(tt.scope), ip, ok, tt.ok) } } } func BenchmarkIPEqual(b *testing.B) { b.Run("IPv4", func(b *testing.B) { benchmarkIPEqual(b, IPv4len) }) b.Run("IPv6", func(b *testing.B) { benchmarkIPEqual(b, IPv6len) }) } func benchmarkIPEqual(b *testing.B, size int) { ips := make([]IP, 1000) for i := range ips { ips[i] = make(IP, size) rand.Read(ips[i]) } // Half of the N are equal. for i := 0; i < b.N/2; i++ { x := ips[i%len(ips)] y := ips[i%len(ips)] x.Equal(y) } // The other half are not equal. for i := 0; i < b.N/2; i++ { x := ips[i%len(ips)] y := ips[(i+1)%len(ips)] x.Equal(y) } }