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// Copyright (c) 2014 The SkyDNS Authors. All rights reserved.
// Use of this source code is governed by The MIT License (MIT) that can be
// found in the LICENSE file.
package server
// etcd needs to be running on http://127.0.0.1:4001
import (
"crypto/rsa"
"encoding/json"
"sort"
"strconv"
"strings"
"sync"
"testing"
"time"
"github.com/coreos/go-etcd/etcd"
"github.com/miekg/dns"
backendetcd "github.com/skynetservices/skydns/backends/etcd"
"github.com/skynetservices/skydns/cache"
"github.com/skynetservices/skydns/msg"
)
// Keep global port counter that increments with 10 for each
// new call to newTestServer. The dns server is started on port 'Port'.
var (
Port = 9400
StrPort = "9400" // string equivalent of Port
metricsDone = false
)
func addService(t *testing.T, s *server, k string, ttl uint64, m *msg.Service) {
b, err := json.Marshal(m)
if err != nil {
t.Fatal(err)
}
path, _ := msg.PathWithWildcard(k)
_, err = s.backend.(*backendetcd.Backend).Client().Create(path, string(b), ttl)
if err != nil {
// TODO(miek): allow for existing keys...
t.Fatal(err)
}
}
func delService(t *testing.T, s *server, k string) {
path, _ := msg.PathWithWildcard(k)
_, err := s.backend.(*backendetcd.Backend).Client().Delete(path, false)
if err != nil {
t.Fatal(err)
}
}
func newTestServer(t *testing.T, c bool) *server {
Port += 10
StrPort = strconv.Itoa(Port)
s := new(server)
client := etcd.NewClient([]string{"http://127.0.0.1:4001"})
// TODO(miek): why don't I use NewServer??
s.group = new(sync.WaitGroup)
s.scache = cache.New(100, 0)
s.rcache = cache.New(100, 0)
if c {
s.rcache = cache.New(100, 60) // 100 items, 60s ttl
}
s.config = new(Config)
s.config.Domain = "skydns.test."
s.config.DnsAddr = "127.0.0.1:" + StrPort
s.config.Nameservers = []string{"8.8.4.4:53"}
SetDefaults(s.config)
s.config.Local = "104.server1.development.region1.skydns.test."
s.config.Priority = 10
s.config.RCacheTtl = RCacheTtl
s.config.Ttl = 3600
s.config.Ndots = 2
prometheusPort = "12300"
prometheusSubsystem = "test"
prometheusNamespace = "test"
if !metricsDone {
metricsDone = true
Metrics()
}
s.dnsUDPclient = &dns.Client{Net: "udp", ReadTimeout: 2 * s.config.ReadTimeout, WriteTimeout: 2 * s.config.ReadTimeout, SingleInflight: true}
s.dnsTCPclient = &dns.Client{Net: "tcp", ReadTimeout: 2 * s.config.ReadTimeout, WriteTimeout: 2 * s.config.ReadTimeout, SingleInflight: true}
s.backend = backendetcd.NewBackend(client, &backendetcd.Config{
Ttl: s.config.Ttl,
Priority: s.config.Priority,
})
go s.Run()
// Yeah, yeah, should do a proper fix.
time.Sleep(500 * time.Millisecond)
return s
}
func newTestServerDNSSEC(t *testing.T, cache bool) *server {
var err error
s := newTestServer(t, cache)
s.config.PubKey = newDNSKEY("skydns.test. IN DNSKEY 256 3 5 AwEAAaXfO+DOBMJsQ5H4TfiabwSpqE4cGL0Qlvh5hrQumrjr9eNSdIOjIHJJKCe56qBU5mH+iBlXP29SVf6UiiMjIrAPDVhClLeWFe0PC+XlWseAyRgiLHdQ8r95+AfkhO5aZgnCwYf9FGGSaT0+CRYN+PyDbXBTLK5FN+j5b6bb7z+d")
s.config.KeyTag = s.config.PubKey.KeyTag()
privKey, err := s.config.PubKey.ReadPrivateKey(strings.NewReader(`Private-key-format: v1.3
Algorithm: 5 (RSASHA1)
Modulus: pd874M4EwmxDkfhN+JpvBKmoThwYvRCW+HmGtC6auOv141J0g6MgckkoJ7nqoFTmYf6IGVc/b1JV/pSKIyMisA8NWEKUt5YV7Q8L5eVax4DJGCIsd1Dyv3n4B+SE7lpmCcLBh/0UYZJpPT4JFg34/INtcFMsrkU36PlvptvvP50=
PublicExponent: AQAB
PrivateExponent: C6e08GXphbPPx6j36ZkIZf552gs1XcuVoB4B7hU8P/Qske2QTFOhCwbC8I+qwdtVWNtmuskbpvnVGw9a6X8lh7Z09RIgzO/pI1qau7kyZcuObDOjPw42exmjqISFPIlS1wKA8tw+yVzvZ19vwRk1q6Rne+C1romaUOTkpA6UXsE=
Prime1: 2mgJ0yr+9vz85abrWBWnB8Gfa1jOw/ccEg8ZToM9GLWI34Qoa0D8Dxm8VJjr1tixXY5zHoWEqRXciTtY3omQDQ==
Prime2: wmxLpp9rTzU4OREEVwF43b/TxSUBlUq6W83n2XP8YrCm1nS480w4HCUuXfON1ncGYHUuq+v4rF+6UVI3PZT50Q==
Exponent1: wkdTngUcIiau67YMmSFBoFOq9Lldy9HvpVzK/R0e5vDsnS8ZKTb4QJJ7BaG2ADpno7pISvkoJaRttaEWD3a8rQ==
Exponent2: YrC8OglEXIGkV3tm2494vf9ozPL6+cBkFsPPg9dXbvVCyyuW0pGHDeplvfUqs4nZp87z8PsoUL+LAUqdldnwcQ==
Coefficient: mMFr4+rDY5V24HZU3Oa5NEb55iQ56ZNa182GnNhWqX7UqWjcUUGjnkCy40BqeFAQ7lp52xKHvP5Zon56mwuQRw==
`), "stdin")
s.config.PrivKey = privKey.(*rsa.PrivateKey)
if err != nil {
t.Fatal(err)
}
return s
}
func TestDNSForward(t *testing.T) {
s := newTestServer(t, false)
defer s.Stop()
c := new(dns.Client)
m := new(dns.Msg)
m.SetQuestion("www.example.com.", dns.TypeA)
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
// try twice
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatal(err)
}
}
if len(resp.Answer) == 0 || resp.Rcode != dns.RcodeSuccess {
t.Fatal("answer expected to have A records or rcode not equal to RcodeSuccess")
}
// TCP
c.Net = "tcp"
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatal(err)
}
if len(resp.Answer) == 0 || resp.Rcode != dns.RcodeSuccess {
t.Fatal("answer expected to have A records or rcode not equal to RcodeSuccess")
}
// disable recursion and check
s.config.NoRec = true
m.SetQuestion("www.example.com.", dns.TypeA)
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatal(err)
}
if resp.Rcode != dns.RcodeServerFailure {
t.Fatal("answer expected to have rcode equal to RcodeFailure")
}
}
func TestDNSStubForward(t *testing.T) {
s := newTestServer(t, false)
defer s.Stop()
c := new(dns.Client)
m := new(dns.Msg)
stubEx := &msg.Service{
// IP address of a.iana-servers.net.
Host: "199.43.132.53", Key: "a.example.com.stub.dns.skydns.test.",
}
stubBroken := &msg.Service{
Host: "127.0.0.1", Port: 5454, Key: "b.example.org.stub.dns.skydns.test.",
}
stubLoop := &msg.Service{
Host: "127.0.0.1", Port: Port, Key: "b.example.net.stub.dns.skydns.test.",
}
addService(t, s, stubEx.Key, 0, stubEx)
defer delService(t, s, stubEx.Key)
addService(t, s, stubBroken.Key, 0, stubBroken)
defer delService(t, s, stubBroken.Key)
addService(t, s, stubLoop.Key, 0, stubLoop)
defer delService(t, s, stubLoop.Key)
s.UpdateStubZones()
m.SetQuestion("www.example.com.", dns.TypeA)
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
// try twice
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatal(err)
}
}
if len(resp.Answer) == 0 || resp.Rcode != dns.RcodeSuccess {
t.Fatal("answer expected to have A records or rcode not equal to RcodeSuccess")
}
// The main diff. here is that we expect the AA bit to be set, because we directly
// queried the authoritative servers.
if resp.Authoritative != true {
t.Fatal("answer expected to have AA bit set")
}
// This should fail.
m.SetQuestion("www.example.org.", dns.TypeA)
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if len(resp.Answer) != 0 || resp.Rcode != dns.RcodeServerFailure {
t.Fatal("answer expected to fail for example.org")
}
// This should really fail with a timeout.
m.SetQuestion("www.example.net.", dns.TypeA)
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err == nil {
t.Fatal("answer expected to fail for example.net")
} else {
t.Logf("succesfully failing %s", err)
}
// Packet with EDNS0
m.SetEdns0(4096, true)
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err == nil {
t.Fatal("answer expected to fail for example.net")
} else {
t.Logf("succesfully failing %s", err)
}
// Now start another SkyDNS instance on a different port,
// add a stubservice for it and check if the forwarding is
// actually working.
oldStrPort := StrPort
s1 := newTestServer(t, false)
defer s1.Stop()
s1.config.Domain = "skydns.com."
// Add forwarding IP for internal.skydns.com. Use Port to point to server s.
stubForward := &msg.Service{
Host: "127.0.0.1", Port: Port, Key: "b.internal.skydns.com.stub.dns.skydns.test.",
}
addService(t, s, stubForward.Key, 0, stubForward)
defer delService(t, s, stubForward.Key)
s.UpdateStubZones()
// Add an answer for this in our "new" server.
stubReply := &msg.Service{
Host: "127.1.1.1", Key: "www.internal.skydns.com.",
}
addService(t, s1, stubReply.Key, 0, stubReply)
defer delService(t, s1, stubReply.Key)
m = new(dns.Msg)
m.SetQuestion("www.internal.skydns.com.", dns.TypeA)
resp, _, err = c.Exchange(m, "127.0.0.1:"+oldStrPort)
if err != nil {
t.Fatalf("failed to forward %s", err)
}
if resp.Answer[0].(*dns.A).A.String() != "127.1.1.1" {
t.Fatalf("failed to get correct reply")
}
// Adding an in baliwick internal domain forward.
s2 := newTestServer(t, false)
defer s2.Stop()
s2.config.Domain = "internal.skydns.net."
// Add forwarding IP for internal.skydns.net. Use Port to point to server s.
stubForward1 := &msg.Service{
Host: "127.0.0.1", Port: Port, Key: "b.internal.skydns.net.stub.dns.skydns.test.",
}
addService(t, s, stubForward1.Key, 0, stubForward1)
defer delService(t, s, stubForward1.Key)
s.UpdateStubZones()
// Add an answer for this in our "new" server.
stubReply1 := &msg.Service{
Host: "127.10.10.10", Key: "www.internal.skydns.net.",
}
addService(t, s2, stubReply1.Key, 0, stubReply1)
defer delService(t, s2, stubReply1.Key)
m = new(dns.Msg)
m.SetQuestion("www.internal.skydns.net.", dns.TypeA)
resp, _, err = c.Exchange(m, "127.0.0.1:"+oldStrPort)
if err != nil {
t.Fatalf("failed to forward %s", err)
}
if resp.Answer[0].(*dns.A).A.String() != "127.10.10.10" {
t.Fatalf("failed to get correct reply")
}
}
func TestDNSTtlRRset(t *testing.T) {
s := newTestServerDNSSEC(t, false)
defer s.Stop()
ttl := uint32(60)
for _, serv := range services {
addService(t, s, serv.Key, uint64(ttl), serv)
defer delService(t, s, serv.Key)
ttl += 60
}
c := new(dns.Client)
tc := dnsTestCases[9]
t.Logf("%v\n", tc)
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
if tc.dnssec == true {
m.SetEdns0(4096, true)
}
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatalf("failing: %s: %s\n", m.String(), err.Error())
}
t.Logf("%s\n", resp)
ttl = 360
for i, a := range resp.Answer {
if a.Header().Ttl != ttl {
t.Errorf("Answer %d should have a Header TTL of %d, but has %d", i, ttl, a.Header().Ttl)
}
}
}
type rrSet []dns.RR
func (p rrSet) Len() int { return len(p) }
func (p rrSet) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p rrSet) Less(i, j int) bool { return p[i].String() < p[j].String() }
func TestDNS(t *testing.T) {
s := newTestServerDNSSEC(t, false)
defer s.Stop()
for _, serv := range services {
addService(t, s, serv.Key, 0, serv)
defer delService(t, s, serv.Key)
}
c := new(dns.Client)
for _, tc := range dnsTestCases {
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
if tc.dnssec {
m.SetEdns0(4096, true)
}
if tc.chaos {
m.Question[0].Qclass = dns.ClassCHAOS
}
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
// try twice, be more resilent against remote lookups
// timing out.
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatalf("failing: %s: %s\n", m.String(), err.Error())
}
}
sort.Sort(rrSet(resp.Answer))
sort.Sort(rrSet(resp.Ns))
sort.Sort(rrSet(resp.Extra))
fatal := false
defer func() {
if fatal {
t.Logf("question: %s\n", m.Question[0].String())
t.Logf("%s\n", resp)
}
}()
if resp.Rcode != tc.Rcode {
fatal = true
t.Fatalf("rcode is %q, expected %q", dns.RcodeToString[resp.Rcode], dns.RcodeToString[tc.Rcode])
}
if len(resp.Answer) != len(tc.Answer) {
fatal = true
t.Fatalf("answer for %q contained %d results, %d expected", tc.Qname, len(resp.Answer), len(tc.Answer))
}
for i, a := range resp.Answer {
if a.Header().Name != tc.Answer[i].Header().Name {
fatal = true
t.Fatalf("answer %d should have a Header Name of %q, but has %q", i, tc.Answer[i].Header().Name, a.Header().Name)
}
if a.Header().Ttl != tc.Answer[i].Header().Ttl {
fatal = true
t.Fatalf("Answer %d should have a Header TTL of %d, but has %d", i, tc.Answer[i].Header().Ttl, a.Header().Ttl)
}
if a.Header().Rrtype != tc.Answer[i].Header().Rrtype {
fatal = true
t.Fatalf("answer %d should have a header response type of %d, but has %d", i, tc.Answer[i].Header().Rrtype, a.Header().Rrtype)
}
switch x := a.(type) {
case *dns.SRV:
if x.Priority != tc.Answer[i].(*dns.SRV).Priority {
fatal = true
t.Fatalf("answer %d should have a Priority of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Priority, x.Priority)
}
if x.Weight != tc.Answer[i].(*dns.SRV).Weight {
fatal = true
t.Fatalf("answer %d should have a Weight of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Weight, x.Weight)
}
if x.Port != tc.Answer[i].(*dns.SRV).Port {
fatal = true
t.Fatalf("answer %d should have a Port of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Port, x.Port)
}
if x.Target != tc.Answer[i].(*dns.SRV).Target {
fatal = true
t.Fatalf("answer %d should have a Target of %q, but has %q", i, tc.Answer[i].(*dns.SRV).Target, x.Target)
}
case *dns.A:
if x.A.String() != tc.Answer[i].(*dns.A).A.String() {
fatal = true
t.Fatalf("answer %d should have a Address of %q, but has %q", i, tc.Answer[i].(*dns.A).A.String(), x.A.String())
}
case *dns.AAAA:
if x.AAAA.String() != tc.Answer[i].(*dns.AAAA).AAAA.String() {
fatal = true
t.Fatalf("answer %d should have a Address of %q, but has %q", i, tc.Answer[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
}
case *dns.TXT:
for j, txt := range x.Txt {
if txt != tc.Answer[i].(*dns.TXT).Txt[j] {
fatal = true
t.Fatalf("answer %d should have a Txt of %q, but has %q", i, tc.Answer[i].(*dns.TXT).Txt[j], txt)
}
}
case *dns.DNSKEY:
tt := tc.Answer[i].(*dns.DNSKEY)
if x.Flags != tt.Flags {
fatal = true
t.Fatalf("DNSKEY flags should be %q, but is %q", x.Flags, tt.Flags)
}
if x.Protocol != tt.Protocol {
fatal = true
t.Fatalf("DNSKEY protocol should be %q, but is %q", x.Protocol, tt.Protocol)
}
if x.Algorithm != tt.Algorithm {
fatal = true
t.Fatalf("DNSKEY algorithm should be %q, but is %q", x.Algorithm, tt.Algorithm)
}
case *dns.RRSIG:
tt := tc.Answer[i].(*dns.RRSIG)
if x.TypeCovered != tt.TypeCovered {
fatal = true
t.Fatalf("RRSIG type-covered should be %d, but is %d", x.TypeCovered, tt.TypeCovered)
}
if x.Algorithm != tt.Algorithm {
fatal = true
t.Fatalf("RRSIG algorithm should be %d, but is %d", x.Algorithm, tt.Algorithm)
}
if x.Labels != tt.Labels {
fatal = true
t.Fatalf("RRSIG label should be %d, but is %d", x.Labels, tt.Labels)
}
if x.OrigTtl != tt.OrigTtl {
fatal = true
t.Fatalf("RRSIG orig-ttl should be %d, but is %d", x.OrigTtl, tt.OrigTtl)
}
if x.KeyTag != tt.KeyTag {
fatal = true
t.Fatalf("RRSIG key-tag should be %d, but is %d", x.KeyTag, tt.KeyTag)
}
if x.SignerName != tt.SignerName {
fatal = true
t.Fatalf("RRSIG signer-name should be %q, but is %q", x.SignerName, tt.SignerName)
}
case *dns.SOA:
tt := tc.Answer[i].(*dns.SOA)
if x.Ns != tt.Ns {
fatal = true
t.Fatalf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.PTR:
tt := tc.Answer[i].(*dns.PTR)
if x.Ptr != tt.Ptr {
fatal = true
t.Fatalf("PTR ptr should be %q, but is %q", x.Ptr, tt.Ptr)
}
case *dns.CNAME:
tt := tc.Answer[i].(*dns.CNAME)
if x.Target != tt.Target {
fatal = true
t.Fatalf("CNAME target should be %q, but is %q", x.Target, tt.Target)
}
case *dns.MX:
tt := tc.Answer[i].(*dns.MX)
if x.Mx != tt.Mx {
t.Fatalf("MX Mx should be %q, but is %q", x.Mx, tt.Mx)
}
if x.Preference != tt.Preference {
t.Fatalf("MX Preference should be %q, but is %q", x.Preference, tt.Preference)
}
}
}
if len(resp.Ns) != len(tc.Ns) {
fatal = true
t.Fatalf("authority for %q contained %d results, %d expected", tc.Qname, len(resp.Ns), len(tc.Ns))
}
for i, n := range resp.Ns {
switch x := n.(type) {
case *dns.SOA:
tt := tc.Ns[i].(*dns.SOA)
if x.Ns != tt.Ns {
fatal = true
t.Fatalf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.NS:
tt := tc.Ns[i].(*dns.NS)
if x.Ns != tt.Ns {
fatal = true
t.Fatalf("NS nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.NSEC3:
tt := tc.Ns[i].(*dns.NSEC3)
if x.NextDomain != tt.NextDomain {
fatal = true
t.Fatalf("NSEC3 nextdomain should be %q, but is %q", x.NextDomain, tt.NextDomain)
}
if x.Hdr.Name != tt.Hdr.Name {
fatal = true
t.Fatalf("NSEC3 ownername should be %q, but is %q", x.Hdr.Name, tt.Hdr.Name)
}
for j, y := range x.TypeBitMap {
if y != tt.TypeBitMap[j] {
fatal = true
t.Fatalf("NSEC3 bitmap should have %q, but is %q", dns.TypeToString[y], dns.TypeToString[tt.TypeBitMap[j]])
}
}
}
}
if len(resp.Extra) != len(tc.Extra) {
fatal = true
t.Fatalf("additional for %q contained %d results, %d expected", tc.Qname, len(resp.Extra), len(tc.Extra))
}
for i, e := range resp.Extra {
switch x := e.(type) {
case *dns.A:
if x.A.String() != tc.Extra[i].(*dns.A).A.String() {
fatal = true
t.Fatalf("extra %d should have a address of %q, but has %q", i, tc.Extra[i].(*dns.A).A.String(), x.A.String())
}
case *dns.AAAA:
if x.AAAA.String() != tc.Extra[i].(*dns.AAAA).AAAA.String() {
fatal = true
t.Fatalf("extra %d should have a address of %q, but has %q", i, tc.Extra[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
}
case *dns.CNAME:
tt := tc.Extra[i].(*dns.CNAME)
if x.Target != tt.Target {
// Super super gross hack.
if x.Target == "a.ipaddr.skydns.test." && tt.Target == "b.ipaddr.skydns.test." {
// These records are randomly choosen, either one is OK.
continue
}
fatal = true
t.Fatalf("CNAME target should be %q, but is %q", x.Target, tt.Target)
}
}
}
}
}
type dnsTestCase struct {
Qname string
Qtype uint16
dnssec bool
chaos bool
Rcode int
Answer []dns.RR
Ns []dns.RR
Extra []dns.RR
}
// Note the key is encoded as DNS name, while in "reality" it is a etcd path.
var services = []*msg.Service{
{Host: "server1", Port: 8080, Key: "100.server1.development.region1.skydns.test."},
{Host: "server2", Port: 80, Key: "101.server2.production.region1.skydns.test."},
{Host: "server4", Port: 80, Priority: 333, Key: "102.server4.development.region6.skydns.test."},
{Host: "server3", Key: "103.server4.development.region2.skydns.test."},
{Host: "172.16.1.1", Key: "a.ipaddr.skydns.test."},
{Host: "172.16.1.2", Key: "b.ipaddr.skydns.test."},
{Host: "ipaddr.skydns.test", Key: "1.backend.in.skydns.test."},
{Host: "10.0.0.1", Key: "104.server1.development.region1.skydns.test."},
{Host: "2001::8:8:8:8", Key: "105.server3.production.region2.skydns.test."},
{Host: "104.server1.development.region1.skydns.test", Key: "1.cname.skydns.test."},
{Host: "100.server1.development.region1.skydns.test", Key: "2.cname.skydns.test."},
{Host: "www.miek.nl", Key: "external1.cname.skydns.test."},
{Host: "www.miek.nl", Key: "ext1.cname2.skydns.test."},
{Host: "www.miek.nl", Key: "ext2.cname2.skydns.test."},
{Host: "wwwwwww.miek.nl", Key: "external2.cname.skydns.test."},
{Host: "4.cname.skydns.test", Key: "3.cname.skydns.test."},
{Host: "3.cname.skydns.test", Key: "4.cname.skydns.test."},
{Host: "10.0.0.2", Key: "ttl.skydns.test.", Ttl: 360},
{Host: "reverse.example.com", Key: "1.0.0.10.in-addr.arpa."}, // 10.0.0.1
{Host: "server1", Weight: 130, Key: "100.server1.region5.skydns.test."},
{Host: "server2", Weight: 80, Key: "101.server2.region5.skydns.test."},
{Host: "server3", Weight: 150, Key: "103.server3.region5.skydns.test."},
{Host: "server4", Priority: 30, Key: "104.server4.region5.skydns.test."},
{Host: "172.16.1.1", Key: "a.ipaddr2.skydns.test."},
{Host: "2001::8:8:8:8", Key: "b.ipaddr2.skydns.test."},
{Host: "ipaddr2.skydns.test", Key: "both.v4v6.test.skydns.test."},
// A name: bar.skydns.test with 2 ports open and points to one ip: 192.168.0.1
{Host: "192.168.0.1", Port: 80, Key: "x.bar.skydns.test.", TargetStrip: 1},
{Host: "bar.skydns.local", Port: 443, Key: "y.bar.skydns.test.", TargetStrip: 0},
// nameserver
{Host: "10.0.0.2", Key: "a.ns.dns.skydns.test."},
{Host: "10.0.0.3", Key: "b.ns.dns.skydns.test."},
// txt
{Text: "abc", Key: "a1.txt.skydns.test."},
{Text: "abc abc", Key: "a2.txt.skydns.test."},
// duplicate ip address
{Host: "10.11.11.10", Key: "http.multiport.http.skydns.test.", Port: 80},
{Host: "10.11.11.10", Key: "https.multiport.http.skydns.test.", Port: 443},
// uppercase name
{Host: "127.0.0.1", Key: "upper.skydns.test.", Port: 443},
// mx
{Host: "mx.skydns.test", Priority: 50, Mail: true, Key: "a.mail.skydns.test."},
{Host: "mx.miek.nl", Priority: 50, Mail: true, Key: "b.mail.skydns.test."},
{Host: "a.ipaddr.skydns.test", Priority: 30, Mail: true, Key: "a.mx.skydns.test."},
// double CNAME, see issue #168
{Host: "mx2.skydns.test", Priority: 50, Mail: true, Key: "a.mail2.skydns.test."},
{Host: "a.ipaddr.skydns.test", Mail: true, Key: "a.mx2.skydns.test."},
// Sometimes we *do* get back a.ipaddr.skydns.test, making this test flaky.
{Host: "b.ipaddr.skydns.test", Mail: true, Key: "b.mx2.skydns.test."},
// groups
{Host: "127.0.0.1", Key: "a.dom.skydns.test.", Group: "g1"},
{Host: "127.0.0.2", Key: "b.sub.dom.skydns.test.", Group: "g1"},
{Host: "127.0.0.1", Key: "a.dom2.skydns.test.", Group: "g1"},
{Host: "127.0.0.2", Key: "b.sub.dom2.skydns.test.", Group: ""},
{Host: "127.0.0.1", Key: "a.dom1.skydns.test.", Group: "g1"},
{Host: "127.0.0.2", Key: "b.sub.dom1.skydns.test.", Group: "g2"},
}
var dnsTestCases = []dnsTestCase{
// Full Name Test
{
Qname: "100.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("100.server1.development.region1.skydns.test. 3600 SRV 10 100 8080 server1.")},
},
// SOA Record Test
{
Qname: "skydns.test.", Qtype: dns.TypeSOA,
Answer: []dns.RR{newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NS Record Test
{
Qname: "skydns.test.", Qtype: dns.TypeNS,
Answer: []dns.RR{
newNS("skydns.test. 3600 NS a.ns.dns.skydns.test."),
newNS("skydns.test. 3600 NS b.ns.dns.skydns.test."),
},
Extra: []dns.RR{
newA("a.ns.dns.skydns.test. 3600 A 10.0.0.2"),
newA("b.ns.dns.skydns.test. 3600 A 10.0.0.3"),
},
},
// A Record For NS Record Test
{
Qname: "ns.dns.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("ns.dns.skydns.test. 3600 A 10.0.0.2"),
newA("ns.dns.skydns.test. 3600 A 10.0.0.3"),
},
},
// A Record Test
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Multiple A Record Test
{
Qname: "ipaddr.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("ipaddr.skydns.test. 3600 A 172.16.1.1"),
newA("ipaddr.skydns.test. 3600 A 172.16.1.2"),
},
},
// A Record Test with SRV
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("104.server1.development.region1.skydns.test. 3600 SRV 10 100 0 104.server1.development.region1.skydns.test.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// AAAAA Record Test
{
Qname: "105.server3.production.region2.skydns.test.", Qtype: dns.TypeAAAA,
Answer: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 AAAA 2001::8:8:8:8")},
},
// Multi SRV with the same target, should be dedupped.
{
Qname: "*.cname2.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("*.cname2.skydns.test. 3600 IN SRV 10 100 0 www.miek.nl."),
},
Extra: []dns.RR{
newA("a.miek.nl. 3600 IN A 176.58.119.54"),
newAAAA("a.miek.nl. 3600 IN AAAA 2a01:7e00::f03c:91ff:feae:e74c"),
newCNAME("www.miek.nl. 3600 IN CNAME a.miek.nl."),
},
},
// TTL Test
{
// This test is referenced by number from DNSTtlRRset
Qname: "ttl.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("ttl.skydns.test. 360 A 10.0.0.2")},
},
// CNAME Test
{
Qname: "1.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newCNAME("1.cname.skydns.test. 3600 CNAME 104.server1.development.region1.skydns.test."),
newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1"),
},
},
// Direct CNAME Test
{
Qname: "1.cname.skydns.test.", Qtype: dns.TypeCNAME,
Answer: []dns.RR{
newCNAME("1.cname.skydns.test. 3600 CNAME 104.server1.development.region1.skydns.test."),
},
},
// CNAME (unresolvable internal name)
{
Qname: "2.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// CNAME loop detection
{
Qname: "3.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// CNAME (resolvable external name)
{
Qname: "external1.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("a.miek.nl. 60 IN A 176.58.119.54"),
newCNAME("external1.cname.skydns.test. 60 IN CNAME www.miek.nl."),
newCNAME("www.miek.nl. 60 IN CNAME a.miek.nl."),
},
},
// CNAME (unresolvable external name)
{
Qname: "external2.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// Priority Test
{
Qname: "region6.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("region6.skydns.test. 3600 SRV 333 100 80 server4.")},
},
// Subdomain Test
{
Qname: "region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("region1.skydns.test. 3600 SRV 10 33 0 104.server1.development.region1.skydns.test."),
newSRV("region1.skydns.test. 3600 SRV 10 33 80 server2"),
newSRV("region1.skydns.test. 3600 SRV 10 33 8080 server1.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Subdomain Weight Test
{
Qname: "region5.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("region5.skydns.test. 3600 SRV 10 22 0 server2."),
newSRV("region5.skydns.test. 3600 SRV 10 36 0 server1."),
newSRV("region5.skydns.test. 3600 SRV 10 41 0 server3."),
newSRV("region5.skydns.test. 3600 SRV 30 100 0 server4.")},
},
// Wildcard Test
{
Qname: "*.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("*.region1.skydns.test. 3600 SRV 10 33 0 104.server1.development.region1.skydns.test."),
newSRV("*.region1.skydns.test. 3600 SRV 10 33 80 server2"),
newSRV("*.region1.skydns.test. 3600 SRV 10 33 8080 server1.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Wildcard Test
{
Qname: "production.*.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("production.*.skydns.test. 3600 IN SRV 10 50 0 105.server3.production.region2.skydns.test."),
newSRV("production.*.skydns.test. 3600 IN SRV 10 50 80 server2.")},
Extra: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 IN AAAA 2001::8:8:8:8")},
},
// Wildcard Test
{
Qname: "production.any.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("production.any.skydns.test. 3600 IN SRV 10 50 0 105.server3.production.region2.skydns.test."),
newSRV("production.any.skydns.test. 3600 IN SRV 10 50 80 server2.")},
Extra: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 IN AAAA 2001::8:8:8:8")},
},
// NXDOMAIN Test
{
Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
},
},
// NODATA Test
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeTXT,
Ns: []dns.RR{newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NODATA Test 2
{
Qname: "100.server1.development.region1.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// CNAME Test that targets multiple A records (hits a directory in etcd)
{
Qname: "1.backend.in.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newCNAME("1.backend.in.skydns.test. IN CNAME ipaddr.skydns.test."),
newA("ipaddr.skydns.test. IN A 172.16.1.1"),
newA("ipaddr.skydns.test. IN A 172.16.1.2"),
},
},
// Query a etcd directory key
{
Qname: "backend.in.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newCNAME("backend.in.skydns.test. IN CNAME ipaddr.skydns.test."),
newA("ipaddr.skydns.test. IN A 172.16.1.1"),
newA("ipaddr.skydns.test. IN A 172.16.1.2"),
},
},
// Txt
{
Qname: "a1.txt.skydns.test.", Qtype: dns.TypeTXT,
Answer: []dns.RR{
newTXT("a1.txt.skydns.test. IN TXT \"abc\""),
},
},
{
Qname: "a2.txt.skydns.test.", Qtype: dns.TypeTXT,
Answer: []dns.RR{
newTXT("a2.txt.skydns.test. IN TXT \"abc abc\""),
},
},
{
Qname: "txt.skydns.test.", Qtype: dns.TypeTXT,
Answer: []dns.RR{
newTXT("txt.skydns.test. IN TXT \"abc abc\""),
newTXT("txt.skydns.test. IN TXT \"abc\""),
},
},
// DNSSEC
// DNSKEY Test
{
dnssec: true,
Qname: "skydns.test.", Qtype: dns.TypeDNSKEY,
Answer: []dns.RR{
newDNSKEY("skydns.test. 3600 DNSKEY 256 3 5 deadbeaf"),
newRRSIG("skydns.test. 3600 RRSIG DNSKEY 5 2 3600 0 0 51945 skydns.test. deadbeaf"),
},
Extra: []dns.RR{new(dns.OPT)},
},
// Signed Response Test
{
dnssec: true,
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newRRSIG("104.server1.development.region1.skydns.test. 3600 RRSIG SRV 5 6 3600 0 0 51945 skydns.test. deadbeaf"),
newSRV("104.server1.development.region1.skydns.test. 3600 SRV 10 100 0 104.server1.development.region1.skydns.test.")},
Extra: []dns.RR{
newRRSIG("104.server1.developmen.region1.skydns.test. 3600 RRSIG A 5 6 3600 0 0 51945 skydns.test. deadbeaf"),
newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1"),
new(dns.OPT),
},
},
// Signed Response Test, ask twice to check cache
{
dnssec: true,
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newRRSIG("104.server1.development.region1.skydns.test. 3600 RRSIG SRV 5 6 3600 0 0 51945 skydns.test. deadbeaf"),
newSRV("104.server1.development.region1.skydns.test. 3600 SRV 10 100 0 104.server1.development.region1.skydns.test.")},
Extra: []dns.RR{
newRRSIG("104.server1.developmen.region1.skydns.test. 3600 RRSIG A 5 6 3600 0 0 51945 skydns.test. deadbeaf"),
newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1"),
new(dns.OPT),
},
},
// NXDOMAIN Test
{
dnssec: true,
Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
newNSEC3("44ohaq2njb0idnvolt9ggthvsk1e1uv8.skydns.test. 60 NSEC3 1 0 0 - 44OHAQ2NJB0IDNVOLT9GGTHVSK1E1UVA"),
newRRSIG("44ohaq2njb0idnvolt9ggthvsk1e1uv8.skydns.test. 60 RRSIG NSEC3 5 3 3600 20140814205559 20140807175559 51945 skydns.test. deadbeef"),
newNSEC3("ah4v7g5qoiri26armrb3bldqi1sng6a2.skydns.test. 60 NSEC3 1 0 0 - AH4V7G5QOIRI26ARMRB3BLDQI1SNG6A3 A AAAA SRV RRSIG"),
newRRSIG("ah4v7g5qoiri26armrb3bldqi1sng6a2.skydns.test. 60 RRSIG NSEC3 5 3 3600 20140814205559 20140807175559 51945 skydns.test. deadbeef"),
newNSEC3("lksd858f4cldl7emdord75k5jeks49p8.skydns.test. 60 NSEC3 1 0 0 - LKSD858F4CLDL7EMDORD75K5JEKS49PA"),
newRRSIG("lksd858f4cldl7emdord75k5jeks49p8.skydns.test. 60 RRSIG NSEC3 5 3 3600 20140814205559 20140807175559 51945 skydns.test. deadbeef"),
newRRSIG("skydns.test. 60 RRSIG SOA 5 2 3600 20140814205559 20140807175559 51945 skydns.test. deadbeaf"),
newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
},
Extra: []dns.RR{new(dns.OPT)},
},
// NXDOMAIN Test, cache test
{
dnssec: true,
Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
newNSEC3("44ohaq2njb0idnvolt9ggthvsk1e1uv8.skydns.test. 60 NSEC3 1 0 0 - 44OHAQ2NJB0IDNVOLT9GGTHVSK1E1UVA"),
newRRSIG("44ohaq2njb0idnvolt9ggthvsk1e1uv8.skydns.test. 60 RRSIG NSEC3 5 3 3600 20140814205559 20140807175559 51945 skydns.test. deadbeef"),
newNSEC3("ah4v7g5qoiri26armrb3bldqi1sng6a2.skydns.test. 60 NSEC3 1 0 0 - AH4V7G5QOIRI26ARMRB3BLDQI1SNG6A3 A AAAA SRV RRSIG"),
newRRSIG("ah4v7g5qoiri26armrb3bldqi1sng6a2.skydns.test. 60 RRSIG NSEC3 5 3 3600 20140814205559 20140807175559 51945 skydns.test. deadbeef"),
newNSEC3("lksd858f4cldl7emdord75k5jeks49p8.skydns.test. 60 NSEC3 1 0 0 - LKSD858F4CLDL7EMDORD75K5JEKS49PA"),
newRRSIG("lksd858f4cldl7emdord75k5jeks49p8.skydns.test. 60 RRSIG NSEC3 5 3 3600 20140814205559 20140807175559 51945 skydns.test. deadbeef"),
newRRSIG("skydns.test. 60 RRSIG SOA 5 2 3600 20140814205559 20140807175559 51945 skydns.test. deadbeaf"),
newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
},
Extra: []dns.RR{new(dns.OPT)},
},
// NODATA Test
{
dnssec: true,
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeTXT,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{
newNSEC3("E76CLEL5E7TQHRTFLTBVH0645NEKFJV9.skydns.test. 60 NSEC3 1 0 0 - E76CLEL5E7TQHRTFLTBVH0645NEKFJVA A AAAA SRV RRSIG"),
newRRSIG("E76CLEL5E7TQHRTFLTBVH0645NEKFJV9.skydns.test. 60 RRSIG NSEC3 5 3 3600 20140814211641 20140807181641 51945 skydns.test. deadbeef"),
newRRSIG("skydns.test. 60 RRSIG SOA 5 2 3600 20140814211641 20140807181641 51945 skydns.test. deadbeef"),
newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407445200 28800 7200 604800 60"),
},
Extra: []dns.RR{new(dns.OPT)},
},
// Reverse v4 local answer
{
Qname: "1.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Answer: []dns.RR{newPTR("1.0.0.10.in-addr.arpa. 3600 PTR reverse.example.com.")},
},
// Reverse v6 local answer
// Reverse forwarding answer, TODO(miek) does not work
// {
// Qname: "1.0.16.172.in-addr.arpa.", Qtype: dns.TypePTR,
// Rcode: dns.RcodeNameError,
// Ns: []dns.RR{newSOA("16.172.in-addr.arpa. 10800 SOA localhost. nobody.invalid. 0 0 0 0 0")},
// },
// Reverse no answer
// Local data query
{
Qname: "local.dns.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("local.dns.skydns.test. 3600 A 10.0.0.1")},
},
// Author test
{
Qname: "skydns.test.", Qtype: dns.TypeTXT,
chaos: true,
Answer: []dns.RR{
newTXT("skydns.test. 0 TXT \"Brian Ketelsen\""),
newTXT("skydns.test. 0 TXT \"Erik St. Martin\""),
newTXT("skydns.test. 0 TXT \"Michael Crosby\""),
newTXT("skydns.test. 0 TXT \"Miek Gieben\""),
},
},
// Author test 2
{
Qname: "authors.bind.", Qtype: dns.TypeTXT,
chaos: true,
Answer: []dns.RR{
newTXT("authors.bind. 0 TXT \"Brian Ketelsen\""),
newTXT("authors.bind. 0 TXT \"Erik St. Martin\""),
newTXT("authors.bind. 0 TXT \"Michael Crosby\""),
newTXT("authors.bind. 0 TXT \"Miek Gieben\""),
},
},
// Author test, caps test
{
Qname: "AUTHOrs.BIND.", Qtype: dns.TypeTXT,
chaos: true,
Answer: []dns.RR{
newTXT("AUTHOrs.BIND. 0 TXT \"Brian Ketelsen\""),
newTXT("AUTHOrs.BIND. 0 TXT \"Erik St. Martin\""),
newTXT("AUTHOrs.BIND. 0 TXT \"Michael Crosby\""),
newTXT("AUTHOrs.BIND. 0 TXT \"Miek Gieben\""),
},
},
// Author test 3, no answer.
{
Qname: "local.dns.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeServerFailure,
chaos: true,
},
// HINFO Test, should be nodata for the apex
{
Qname: "skydns.test.", Qtype: dns.TypeHINFO,
Ns: []dns.RR{newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// One IP, two ports open, ask for the IP only.
{
Qname: "bar.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("bar.skydns.test. 3600 A 192.168.0.1"),
},
},
// Then ask for the SRV records.
{
Qname: "bar.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("bar.skydns.test. 3600 SRV 10 50 443 bar.skydns.local."),
// Issue 144 says x.bar.skydns.test should be bar.skydns.test
newSRV("bar.skydns.test. 3600 SRV 10 50 80 bar.skydns.test."),
},
Extra: []dns.RR{
newA("bar.skydns.test. 3600 A 192.168.0.1"),
},
},
// Duplicate IP address test
{
Qname: "multiport.http.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("multiport.http.skydns.test. IN A 10.11.11.10")},
},
// Casing test
{
Qname: "uppeR.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("uppeR.skydns.test. IN A 127.0.0.1")},
},
{
Qname: "upper.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("upper.skydns.test. IN A 127.0.0.1")},
},
// SRV record with name that is internally resolvable.
{
Qname: "1.cname.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("1.cname.skydns.test. IN SRV 10 100 0 104.server1.development.region1.skydns.test.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. IN A 10.0.0.1")},
},
// SRV record with name that is internally resolvable. Get v4 and v6 records.
{
Qname: "both.v4v6.test.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("both.v4v6.test.skydns.test. IN SRV 10 100 0 ipaddr2.skydns.test.")},
Extra: []dns.RR{
newA("ipaddr2.skydns.test. IN A 172.16.1.1"),
newAAAA("ipaddr2.skydns.test. IN AAAA 2001::8:8:8:8"),
},
},
// MX Tests
{
// NODATA as this is not an Mail: true record.
Qname: "100.server1.development.region1.skydns.test.", Qtype: dns.TypeMX,
Ns: []dns.RR{
newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
},
},
{
Qname: "b.mail.skydns.test.", Qtype: dns.TypeMX,
Answer: []dns.RR{newMX("b.mail.skydns.test. IN MX 50 mx.miek.nl.")},
},
{
// See issue #168
Qname: "a.mail.skydns.test.", Qtype: dns.TypeMX,
Answer: []dns.RR{newMX("a.mail.skydns.test. IN MX 50 mx.skydns.test.")},
Extra: []dns.RR{
newA("a.ipaddr.skydns.test. IN A 172.16.1.1"),
newCNAME("mx.skydns.tests. IN CNAME a.ipaddr.skydns.test."),
},
},
{
Qname: "mx.skydns.test.", Qtype: dns.TypeMX,
Answer: []dns.RR{
newMX("mx.skydns.test. IN MX 30 a.ipaddr.skydns.test."),
},
Extra: []dns.RR{
newA("a.ipaddr.skydns.test. A 172.16.1.1"),
},
},
// Double CNAMEs in the additional
{
Qname: "a.mail2.skydns.test.", Qtype: dns.TypeMX,
Answer: []dns.RR{
newMX("a.mail2.skydns.test. IN MX 50 mx2.skydns.test."),
},
Extra: []dns.RR{
newA("a.ipaddr.skydns.test. A 172.16.1.1"),
newA("b.ipaddr.skydns.test. A 172.16.1.2"),
// only one CNAME can be here, if we round-robin we randomly choose
// without it, pick the first
newCNAME("mx2.skydns.test. CNAME b.ipaddr.skydns.test."),
},
},
// Groups
{
// hits the group 'g1' and only includes those records
Qname: "dom.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("dom.skydns.test. IN A 127.0.0.1"),
newA("dom.skydns.test. IN A 127.0.0.2"),
},
},
{
// One has group, the other has not... Include the non-group always.
Qname: "dom2.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("dom2.skydns.test. IN A 127.0.0.1"),
newA("dom2.skydns.test. IN A 127.0.0.2"),
},
},
{
// The groups differ.
Qname: "dom1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("dom1.skydns.test. IN A 127.0.0.1"),
},
},
}
func newA(rr string) *dns.A { r, _ := dns.NewRR(rr); return r.(*dns.A) }
func newAAAA(rr string) *dns.AAAA { r, _ := dns.NewRR(rr); return r.(*dns.AAAA) }
func newCNAME(rr string) *dns.CNAME { r, _ := dns.NewRR(rr); return r.(*dns.CNAME) }
func newSRV(rr string) *dns.SRV { r, _ := dns.NewRR(rr); return r.(*dns.SRV) }
func newSOA(rr string) *dns.SOA { r, _ := dns.NewRR(rr); return r.(*dns.SOA) }
func newNS(rr string) *dns.NS { r, _ := dns.NewRR(rr); return r.(*dns.NS) }
func newDNSKEY(rr string) *dns.DNSKEY { r, _ := dns.NewRR(rr); return r.(*dns.DNSKEY) }
func newRRSIG(rr string) *dns.RRSIG { r, _ := dns.NewRR(rr); return r.(*dns.RRSIG) }
func newNSEC3(rr string) *dns.NSEC3 { r, _ := dns.NewRR(rr); return r.(*dns.NSEC3) }
func newPTR(rr string) *dns.PTR { r, _ := dns.NewRR(rr); return r.(*dns.PTR) }
func newTXT(rr string) *dns.TXT { r, _ := dns.NewRR(rr); return r.(*dns.TXT) }
func newMX(rr string) *dns.MX { r, _ := dns.NewRR(rr); return r.(*dns.MX) }
func TestDedup(t *testing.T) {
m := new(dns.Msg)
m.Answer = []dns.RR{
newA("svc.ns.kubernetes.local. IN A 3.3.3.3"),
newA("svc.ns.kubernetes.local. IN A 2.2.2.2"),
newA("svc.ns.kubernetes.local. IN A 3.3.3.3"),
newA("svc.ns.kubernetes.local. IN A 2.2.2.2"),
newA("svc.ns.kubernetes.local. IN A 1.1.1.1"),
newA("svc.ns.kubernetes.local. IN A 1.1.1.1"),
}
s := &server{}
m = s.dedup(m)
sort.Sort(rrSet(m.Answer))
if len(m.Answer) != 3 {
t.Fatalf("failing dedup: should have collapsed it to 3 records")
}
if dns.Field(m.Answer[0], 1) != "1.1.1.1" || dns.Field(m.Answer[1], 1) != "2.2.2.2" ||
dns.Field(m.Answer[2], 1) != "3.3.3.3" {
t.Fatalf("failing dedup: %s", m)
}
}
func TestTargetStripAdditional(t *testing.T) {
s := newTestServer(t, false)
defer s.Stop()
c := new(dns.Client)
m := new(dns.Msg)
pre := "bliep."
expected := "blaat.skydns.test."
serv := &msg.Service{
Host: "199.43.132.53", Key: pre + expected, TargetStrip: 1, Text: "Text",
}
addService(t, s, serv.Key, 0, serv)
defer delService(t, s, serv.Key)
m.SetQuestion(pre+expected, dns.TypeSRV)
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatal(err)
}
t.Logf("%s", resp.String())
if resp.Extra[0].Header().Name != expected {
t.Fatalf("expected %s, got %s for SRV with v4", expected, resp.Extra[0].Header().Name)
}
serv = &msg.Service{
Host: "2001::1", Key: pre + expected, TargetStrip: 1, Text: "Text",
}
delService(t, s, serv.Key)
// previous defer still stands
addService(t, s, serv.Key, 0, serv)
m.SetQuestion(pre+expected, dns.TypeSRV)
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatal(err)
}
t.Logf("%s", resp.String())
if resp.Extra[0].Header().Name != expected {
t.Fatalf("expected %s, got %s for SRV with v6", expected, resp.Extra[0].Header().Name)
}
}
func TestMsgOverflow(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode.")
}
s := newTestServer(t, false)
defer s.Stop()
c := new(dns.Client)
m := new(dns.Msg)
for i := 0; i < 2000; i++ {
is := strconv.Itoa(i)
m := &msg.Service{
Host: "2001::" + is, Key: "machine" + is + ".machines.skydns.test.",
}
addService(t, s, m.Key, 0, m)
defer delService(t, s, m.Key)
}
m.SetQuestion("machines.skydns.test.", dns.TypeSRV)
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatal(err)
}
t.Logf("%s", resp)
if resp.Rcode != dns.RcodeSuccess {
t.Fatalf("expecting server failure, got %d", resp.Rcode)
}
}
func BenchmarkDNSSingleCache(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t, true)
defer s.Stop()
serv := services[0]
addService(t, s, serv.Key, 0, serv)
defer delService(t, s, serv.Key)
c := new(dns.Client)
tc := dnsTestCases[0]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
func BenchmarkDNSWildcardCache(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t, true)
defer s.Stop()
for _, serv := range services {
m := &msg.Service{Host: serv.Host, Port: serv.Port}
addService(t, s, serv.Key, 0, m)
defer delService(t, s, serv.Key)
}
c := new(dns.Client)
tc := dnsTestCases[8] // Wildcard Test
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
func BenchmarkDNSSECSingleCache(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t, true)
defer s.Stop()
serv := services[0]
addService(t, s, serv.Key, 0, serv)
defer delService(t, s, serv.Key)
c := new(dns.Client)
tc := dnsTestCases[0]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
m.SetEdns0(4096, true)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
func BenchmarkDNSSingleNoCache(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t, false)
defer s.Stop()
serv := services[0]
addService(t, s, serv.Key, 0, serv)
defer delService(t, s, serv.Key)
c := new(dns.Client)
tc := dnsTestCases[0]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
func BenchmarkDNSWildcardNoCache(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t, false)
defer s.Stop()
for _, serv := range services {
m := &msg.Service{Host: serv.Host, Port: serv.Port}
addService(t, s, serv.Key, 0, m)
defer delService(t, s, serv.Key)
}
c := new(dns.Client)
tc := dnsTestCases[8] // Wildcard Test
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
func BenchmarkDNSSECSingleNoCache(b *testing.B) {
b.StopTimer()
t := new(testing.T)
s := newTestServerDNSSEC(t, false)
defer s.Stop()
serv := services[0]
addService(t, s, serv.Key, 0, serv)
defer delService(t, s, serv.Key)
c := new(dns.Client)
tc := dnsTestCases[0]
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
m.SetEdns0(4096, true)
b.StartTimer()
for i := 0; i < b.N; i++ {
c.Exchange(m, "127.0.0.1:"+StrPort)
}
}
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