mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-08 20:55:01 +00:00
635 lines
16 KiB
Go
635 lines
16 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import (
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"bytes"
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"fmt"
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"internal/testenv"
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"runtime"
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"strings"
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"testing"
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"time"
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)
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func lookupLocalhost(fn func(string) ([]IPAddr, error), host string) ([]IPAddr, error) {
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switch host {
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case "localhost":
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return []IPAddr{
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{IP: IPv4(127, 0, 0, 1)},
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{IP: IPv6loopback},
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}, nil
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default:
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return fn(host)
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}
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}
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// The Lookup APIs use various sources such as local database, DNS or
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// mDNS, and may use platform-dependent DNS stub resolver if possible.
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// The APIs accept any of forms for a query; host name in various
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// encodings, UTF-8 encoded net name, domain name, FQDN or absolute
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// FQDN, but the result would be one of the forms and it depends on
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// the circumstances.
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var lookupGoogleSRVTests = []struct {
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service, proto, name string
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cname, target string
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}{
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{
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"xmpp-server", "tcp", "google.com",
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"google.com.", "google.com.",
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},
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{
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"xmpp-server", "tcp", "google.com.",
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"google.com.", "google.com.",
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},
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// non-standard back door
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{
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"", "", "_xmpp-server._tcp.google.com",
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"google.com.", "google.com.",
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},
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{
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"", "", "_xmpp-server._tcp.google.com.",
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"google.com.", "google.com.",
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},
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}
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func TestLookupGoogleSRV(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for _, tt := range lookupGoogleSRVTests {
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cname, srvs, err := LookupSRV(tt.service, tt.proto, tt.name)
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if err != nil {
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t.Fatal(err)
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}
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if len(srvs) == 0 {
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t.Error("got no record")
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}
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if !strings.HasSuffix(cname, tt.cname) {
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t.Errorf("got %s; want %s", cname, tt.cname)
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}
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for _, srv := range srvs {
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if !strings.HasSuffix(srv.Target, tt.target) {
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t.Errorf("got %v; want a record containing %s", srv, tt.target)
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}
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}
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}
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}
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var lookupGmailMXTests = []struct {
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name, host string
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}{
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{"gmail.com", "google.com."},
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{"gmail.com.", "google.com."},
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}
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func TestLookupGmailMX(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for _, tt := range lookupGmailMXTests {
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mxs, err := LookupMX(tt.name)
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if err != nil {
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t.Fatal(err)
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}
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if len(mxs) == 0 {
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t.Error("got no record")
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}
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for _, mx := range mxs {
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if !strings.HasSuffix(mx.Host, tt.host) {
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t.Errorf("got %v; want a record containing %s", mx, tt.host)
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}
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}
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}
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}
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var lookupGmailNSTests = []struct {
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name, host string
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}{
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{"gmail.com", "google.com."},
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{"gmail.com.", "google.com."},
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}
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func TestLookupGmailNS(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for _, tt := range lookupGmailNSTests {
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nss, err := LookupNS(tt.name)
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if err != nil {
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t.Fatal(err)
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}
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if len(nss) == 0 {
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t.Error("got no record")
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}
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for _, ns := range nss {
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if !strings.HasSuffix(ns.Host, tt.host) {
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t.Errorf("got %v; want a record containing %s", ns, tt.host)
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}
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}
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}
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}
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var lookupGmailTXTTests = []struct {
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name, txt, host string
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}{
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{"gmail.com", "spf", "google.com"},
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{"gmail.com.", "spf", "google.com"},
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}
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func TestLookupGmailTXT(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for _, tt := range lookupGmailTXTTests {
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txts, err := LookupTXT(tt.name)
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if err != nil {
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t.Fatal(err)
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}
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if len(txts) == 0 {
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t.Error("got no record")
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}
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for _, txt := range txts {
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if !strings.Contains(txt, tt.txt) || (!strings.HasSuffix(txt, tt.host) && !strings.HasSuffix(txt, tt.host+".")) {
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t.Errorf("got %s; want a record containing %s, %s", txt, tt.txt, tt.host)
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}
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}
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}
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}
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var lookupGooglePublicDNSAddrTests = []struct {
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addr, name string
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}{
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{"8.8.8.8", ".google.com."},
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{"8.8.4.4", ".google.com."},
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{"2001:4860:4860::8888", ".google.com."},
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{"2001:4860:4860::8844", ".google.com."},
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}
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func TestLookupGooglePublicDNSAddr(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !supportsIPv6 || !*testIPv4 || !*testIPv6 {
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t.Skip("both IPv4 and IPv6 are required")
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}
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for _, tt := range lookupGooglePublicDNSAddrTests {
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names, err := LookupAddr(tt.addr)
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if err != nil {
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t.Fatal(err)
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}
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if len(names) == 0 {
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t.Error("got no record")
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}
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for _, name := range names {
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if !strings.HasSuffix(name, tt.name) {
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t.Errorf("got %s; want a record containing %s", name, tt.name)
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}
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}
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}
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}
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func TestLookupIPv6LinkLocalAddr(t *testing.T) {
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if !supportsIPv6 || !*testIPv6 {
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t.Skip("IPv6 is required")
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}
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addrs, err := LookupHost("localhost")
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if err != nil {
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t.Fatal(err)
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}
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found := false
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for _, addr := range addrs {
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if addr == "fe80::1%lo0" {
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found = true
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break
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}
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}
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if !found {
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t.Skipf("not supported on %s", runtime.GOOS)
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}
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if _, err := LookupAddr("fe80::1%lo0"); err != nil {
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t.Error(err)
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}
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}
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var lookupIANACNAMETests = []struct {
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name, cname string
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}{
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{"www.iana.org", "icann.org."},
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{"www.iana.org.", "icann.org."},
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}
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func TestLookupIANACNAME(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for _, tt := range lookupIANACNAMETests {
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cname, err := LookupCNAME(tt.name)
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if err != nil {
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t.Fatal(err)
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}
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if !strings.HasSuffix(cname, tt.cname) {
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t.Errorf("got %s; want a record containing %s", cname, tt.cname)
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}
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}
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}
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var lookupGoogleHostTests = []struct {
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name string
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}{
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{"google.com"},
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{"google.com."},
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}
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func TestLookupGoogleHost(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for _, tt := range lookupGoogleHostTests {
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addrs, err := LookupHost(tt.name)
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if err != nil {
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t.Fatal(err)
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}
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if len(addrs) == 0 {
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t.Error("got no record")
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}
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for _, addr := range addrs {
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if ParseIP(addr) == nil {
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t.Errorf("got %q; want a literal IP address", addr)
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}
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}
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}
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}
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var lookupGoogleIPTests = []struct {
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name string
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}{
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{"google.com"},
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{"google.com."},
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}
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func TestLookupGoogleIP(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for _, tt := range lookupGoogleIPTests {
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ips, err := LookupIP(tt.name)
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if err != nil {
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t.Fatal(err)
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}
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if len(ips) == 0 {
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t.Error("got no record")
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}
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for _, ip := range ips {
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if ip.To4() == nil && ip.To16() == nil {
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t.Errorf("got %v; want an IP address", ip)
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}
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}
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}
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}
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var revAddrTests = []struct {
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Addr string
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Reverse string
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ErrPrefix string
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}{
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{"1.2.3.4", "4.3.2.1.in-addr.arpa.", ""},
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{"245.110.36.114", "114.36.110.245.in-addr.arpa.", ""},
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{"::ffff:12.34.56.78", "78.56.34.12.in-addr.arpa.", ""},
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{"::1", "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa.", ""},
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{"1::", "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.ip6.arpa.", ""},
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{"1234:567::89a:bcde", "e.d.c.b.a.9.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.6.5.0.4.3.2.1.ip6.arpa.", ""},
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{"1234:567:fefe:bcbc:adad:9e4a:89a:bcde", "e.d.c.b.a.9.8.0.a.4.e.9.d.a.d.a.c.b.c.b.e.f.e.f.7.6.5.0.4.3.2.1.ip6.arpa.", ""},
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{"1.2.3", "", "unrecognized address"},
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{"1.2.3.4.5", "", "unrecognized address"},
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{"1234:567:bcbca::89a:bcde", "", "unrecognized address"},
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{"1234:567::bcbc:adad::89a:bcde", "", "unrecognized address"},
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}
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func TestReverseAddress(t *testing.T) {
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for i, tt := range revAddrTests {
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a, err := reverseaddr(tt.Addr)
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if len(tt.ErrPrefix) > 0 && err == nil {
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t.Errorf("#%d: expected %q, got <nil> (error)", i, tt.ErrPrefix)
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continue
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}
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if len(tt.ErrPrefix) == 0 && err != nil {
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t.Errorf("#%d: expected <nil>, got %q (error)", i, err)
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}
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if err != nil && err.(*DNSError).Err != tt.ErrPrefix {
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t.Errorf("#%d: expected %q, got %q (mismatched error)", i, tt.ErrPrefix, err.(*DNSError).Err)
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}
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if a != tt.Reverse {
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t.Errorf("#%d: expected %q, got %q (reverse address)", i, tt.Reverse, a)
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}
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}
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}
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func TestLookupIPDeadline(t *testing.T) {
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if !*testDNSFlood {
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t.Skip("test disabled; use -dnsflood to enable")
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}
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const N = 5000
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const timeout = 3 * time.Second
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c := make(chan error, 2*N)
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for i := 0; i < N; i++ {
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name := fmt.Sprintf("%d.net-test.golang.org", i)
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go func() {
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_, err := lookupIPDeadline(name, time.Now().Add(timeout/2))
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c <- err
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}()
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go func() {
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_, err := lookupIPDeadline(name, time.Now().Add(timeout))
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c <- err
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}()
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}
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qstats := struct {
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succeeded, failed int
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timeout, temporary, other int
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unknown int
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}{}
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deadline := time.After(timeout + time.Second)
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for i := 0; i < 2*N; i++ {
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select {
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case <-deadline:
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t.Fatal("deadline exceeded")
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case err := <-c:
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switch err := err.(type) {
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case nil:
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qstats.succeeded++
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case Error:
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qstats.failed++
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if err.Timeout() {
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qstats.timeout++
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}
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if err.Temporary() {
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qstats.temporary++
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}
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if !err.Timeout() && !err.Temporary() {
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qstats.other++
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}
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default:
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qstats.failed++
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qstats.unknown++
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}
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}
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}
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// A high volume of DNS queries for sub-domain of golang.org
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// would be coordinated by authoritative or recursive server,
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// or stub resolver which implements query-response rate
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// limitation, so we can expect some query successes and more
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// failures including timeout, temporary and other here.
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// As a rule, unknown must not be shown but it might possibly
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// happen due to issue 4856 for now.
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t.Logf("%v succeeded, %v failed (%v timeout, %v temporary, %v other, %v unknown)", qstats.succeeded, qstats.failed, qstats.timeout, qstats.temporary, qstats.other, qstats.unknown)
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}
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func TestLookupDotsWithLocalSource(t *testing.T) {
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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for i, fn := range []func() func(){forceGoDNS, forceCgoDNS} {
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fixup := fn()
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if fixup == nil {
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continue
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}
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names, err := LookupAddr("127.0.0.1")
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fixup()
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if err != nil {
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t.Logf("#%d: %v", i, err)
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continue
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}
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mode := "netgo"
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if i == 1 {
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mode = "netcgo"
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}
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loop:
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for i, name := range names {
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if strings.Index(name, ".") == len(name)-1 { // "localhost" not "localhost."
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for j := range names {
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if j == i {
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continue
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}
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if names[j] == name[:len(name)-1] {
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// It's OK if we find the name without the dot,
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// as some systems say 127.0.0.1 localhost localhost.
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continue loop
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}
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}
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t.Errorf("%s: got %s; want %s", mode, name, name[:len(name)-1])
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} else if strings.Contains(name, ".") && !strings.HasSuffix(name, ".") { // "localhost.localdomain." not "localhost.localdomain"
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t.Errorf("%s: got %s; want name ending with trailing dot", mode, name)
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}
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}
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}
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}
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func TestLookupDotsWithRemoteSource(t *testing.T) {
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if testing.Short() && testenv.Builder() == "" || !*testExternal {
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t.Skip("avoid external network")
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}
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if !supportsIPv4 || !*testIPv4 {
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t.Skip("IPv4 is required")
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}
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if fixup := forceGoDNS(); fixup != nil {
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testDots(t, "go")
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fixup()
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}
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if fixup := forceCgoDNS(); fixup != nil {
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testDots(t, "cgo")
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fixup()
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}
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}
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func testDots(t *testing.T, mode string) {
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names, err := LookupAddr("8.8.8.8") // Google dns server
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if err != nil {
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t.Errorf("LookupAddr(8.8.8.8): %v (mode=%v)", err, mode)
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} else {
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for _, name := range names {
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if !strings.HasSuffix(name, ".google.com.") {
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t.Errorf("LookupAddr(8.8.8.8) = %v, want names ending in .google.com. with trailing dot (mode=%v)", names, mode)
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break
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}
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}
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}
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cname, err := LookupCNAME("www.mit.edu")
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if err != nil || !strings.HasSuffix(cname, ".") {
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t.Errorf("LookupCNAME(www.mit.edu) = %v, %v, want cname ending in . with trailing dot (mode=%v)", cname, err, mode)
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}
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mxs, err := LookupMX("google.com")
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if err != nil {
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t.Errorf("LookupMX(google.com): %v (mode=%v)", err, mode)
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} else {
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for _, mx := range mxs {
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if !strings.HasSuffix(mx.Host, ".google.com.") {
|
|
t.Errorf("LookupMX(google.com) = %v, want names ending in .google.com. with trailing dot (mode=%v)", mxString(mxs), mode)
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
nss, err := LookupNS("google.com")
|
|
if err != nil {
|
|
t.Errorf("LookupNS(google.com): %v (mode=%v)", err, mode)
|
|
} else {
|
|
for _, ns := range nss {
|
|
if !strings.HasSuffix(ns.Host, ".google.com.") {
|
|
t.Errorf("LookupNS(google.com) = %v, want names ending in .google.com. with trailing dot (mode=%v)", nsString(nss), mode)
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
cname, srvs, err := LookupSRV("xmpp-server", "tcp", "google.com")
|
|
if err != nil {
|
|
t.Errorf("LookupSRV(xmpp-server, tcp, google.com): %v (mode=%v)", err, mode)
|
|
} else {
|
|
if !strings.HasSuffix(cname, ".google.com.") {
|
|
t.Errorf("LookupSRV(xmpp-server, tcp, google.com) returned cname=%v, want name ending in .google.com. with trailing dot (mode=%v)", cname, mode)
|
|
}
|
|
for _, srv := range srvs {
|
|
if !strings.HasSuffix(srv.Target, ".google.com.") {
|
|
t.Errorf("LookupSRV(xmpp-server, tcp, google.com) returned addrs=%v, want names ending in .google.com. with trailing dot (mode=%v)", srvString(srvs), mode)
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func mxString(mxs []*MX) string {
|
|
var buf bytes.Buffer
|
|
sep := ""
|
|
fmt.Fprintf(&buf, "[")
|
|
for _, mx := range mxs {
|
|
fmt.Fprintf(&buf, "%s%s:%d", sep, mx.Host, mx.Pref)
|
|
sep = " "
|
|
}
|
|
fmt.Fprintf(&buf, "]")
|
|
return buf.String()
|
|
}
|
|
|
|
func nsString(nss []*NS) string {
|
|
var buf bytes.Buffer
|
|
sep := ""
|
|
fmt.Fprintf(&buf, "[")
|
|
for _, ns := range nss {
|
|
fmt.Fprintf(&buf, "%s%s", sep, ns.Host)
|
|
sep = " "
|
|
}
|
|
fmt.Fprintf(&buf, "]")
|
|
return buf.String()
|
|
}
|
|
|
|
func srvString(srvs []*SRV) string {
|
|
var buf bytes.Buffer
|
|
sep := ""
|
|
fmt.Fprintf(&buf, "[")
|
|
for _, srv := range srvs {
|
|
fmt.Fprintf(&buf, "%s%s:%d:%d:%d", sep, srv.Target, srv.Port, srv.Priority, srv.Weight)
|
|
sep = " "
|
|
}
|
|
fmt.Fprintf(&buf, "]")
|
|
return buf.String()
|
|
}
|
|
|
|
var lookupPortTests = []struct {
|
|
network string
|
|
name string
|
|
port int
|
|
ok bool
|
|
}{
|
|
{"tcp", "0", 0, true},
|
|
{"tcp", "echo", 7, true},
|
|
{"tcp", "discard", 9, true},
|
|
{"tcp", "systat", 11, true},
|
|
{"tcp", "daytime", 13, true},
|
|
{"tcp", "chargen", 19, true},
|
|
{"tcp", "ftp-data", 20, true},
|
|
{"tcp", "ftp", 21, true},
|
|
{"tcp", "telnet", 23, true},
|
|
{"tcp", "smtp", 25, true},
|
|
{"tcp", "time", 37, true},
|
|
{"tcp", "domain", 53, true},
|
|
{"tcp", "finger", 79, true},
|
|
{"tcp", "42", 42, true},
|
|
|
|
{"udp", "0", 0, true},
|
|
{"udp", "echo", 7, true},
|
|
{"udp", "tftp", 69, true},
|
|
{"udp", "bootpc", 68, true},
|
|
{"udp", "bootps", 67, true},
|
|
{"udp", "domain", 53, true},
|
|
{"udp", "ntp", 123, true},
|
|
{"udp", "snmp", 161, true},
|
|
{"udp", "syslog", 514, true},
|
|
{"udp", "42", 42, true},
|
|
|
|
{"--badnet--", "zzz", 0, false},
|
|
{"tcp", "--badport--", 0, false},
|
|
{"tcp", "-1", 0, false},
|
|
{"tcp", "65536", 0, false},
|
|
{"udp", "-1", 0, false},
|
|
{"udp", "65536", 0, false},
|
|
|
|
// Issue 13610: LookupPort("tcp", "")
|
|
{"tcp", "", 0, true},
|
|
{"tcp6", "", 0, true},
|
|
{"tcp4", "", 0, true},
|
|
{"udp", "", 0, true},
|
|
}
|
|
|
|
func TestLookupPort(t *testing.T) {
|
|
switch runtime.GOOS {
|
|
case "nacl":
|
|
t.Skipf("not supported on %s", runtime.GOOS)
|
|
}
|
|
|
|
for _, tt := range lookupPortTests {
|
|
if port, err := LookupPort(tt.network, tt.name); port != tt.port || (err == nil) != tt.ok {
|
|
t.Errorf("LookupPort(%q, %q) = %d, %v; want %d", tt.network, tt.name, port, err, tt.port)
|
|
}
|
|
}
|
|
}
|