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memberlist_test.go
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memberlist_test.go
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package memberlist
import (
"bytes"
"fmt"
"io/ioutil"
"log"
"net"
"os"
"reflect"
"strings"
"sync"
"testing"
"time"
"github.com/miekg/dns"
)
var bindLock sync.Mutex
var bindNum byte = 10
func getBindAddr() net.IP {
bindLock.Lock()
defer bindLock.Unlock()
result := net.IPv4(127, 0, 0, bindNum)
bindNum++
if bindNum > 255 {
bindNum = 10
}
return result
}
func testConfig() *Config {
config := DefaultLANConfig()
config.BindAddr = getBindAddr().String()
config.Name = config.BindAddr
return config
}
func yield() {
time.Sleep(5 * time.Millisecond)
}
type MockDelegate struct {
meta []byte
msgs [][]byte
broadcasts [][]byte
state []byte
remoteState []byte
}
func (m *MockDelegate) NodeMeta(limit int) []byte {
return m.meta
}
func (m *MockDelegate) NotifyMsg(msg []byte) {
cp := make([]byte, len(msg))
copy(cp, msg)
m.msgs = append(m.msgs, cp)
}
func (m *MockDelegate) GetBroadcasts(overhead, limit int) [][]byte {
b := m.broadcasts
m.broadcasts = nil
return b
}
func (m *MockDelegate) LocalState(join bool) []byte {
return m.state
}
func (m *MockDelegate) MergeRemoteState(s []byte, join bool) {
m.remoteState = s
}
// Returns a new Memberlist on an open port by trying a range of port numbers
// until something sticks.
func NewMemberlistOnOpenPort(c *Config) (*Memberlist, error) {
c.BindPort = 0
return newMemberlist(c)
}
func GetMemberlistDelegate(t *testing.T) (*Memberlist, *MockDelegate) {
d := &MockDelegate{}
c := testConfig()
c.Delegate = d
m, err := NewMemberlistOnOpenPort(c)
if err != nil {
t.Fatalf("failed to start: %v", err)
return nil, nil
}
return m, d
}
func GetMemberlist(t *testing.T) *Memberlist {
c := testConfig()
m, err := NewMemberlistOnOpenPort(c)
if err != nil {
t.Fatalf("failed to start: %v", err)
return nil
}
return m
}
func TestDefaultLANConfig_protocolVersion(t *testing.T) {
c := DefaultLANConfig()
if c.ProtocolVersion != ProtocolVersion2Compatible {
t.Fatalf("should be max: %d", c.ProtocolVersion)
}
}
func TestCreate_protocolVersion(t *testing.T) {
cases := []struct {
version uint8
err bool
}{
{ProtocolVersionMin, false},
{ProtocolVersionMax, false},
// TODO(mitchellh): uncommon when we're over 0
//{ProtocolVersionMin - 1, true},
{ProtocolVersionMax + 1, true},
{ProtocolVersionMax - 1, false},
}
for _, tc := range cases {
c := DefaultLANConfig()
c.BindAddr = getBindAddr().String()
c.ProtocolVersion = tc.version
m, err := Create(c)
if tc.err && err == nil {
t.Errorf("Should've failed with version: %d", tc.version)
} else if !tc.err && err != nil {
t.Errorf("Version '%d' error: %s", tc.version, err)
}
if err == nil {
m.Shutdown()
}
}
}
func TestCreate_secretKey(t *testing.T) {
cases := []struct {
key []byte
err bool
}{
{make([]byte, 0), false},
{[]byte("abc"), true},
{make([]byte, 16), false},
{make([]byte, 38), true},
}
for _, tc := range cases {
c := DefaultLANConfig()
c.BindAddr = getBindAddr().String()
c.SecretKey = tc.key
m, err := Create(c)
if tc.err && err == nil {
t.Errorf("Should've failed with key: %#v", tc.key)
} else if !tc.err && err != nil {
t.Errorf("Key '%#v' error: %s", tc.key, err)
}
if err == nil {
m.Shutdown()
}
}
}
func TestCreate_secretKeyEmpty(t *testing.T) {
c := DefaultLANConfig()
c.BindAddr = getBindAddr().String()
c.SecretKey = make([]byte, 0)
m, err := Create(c)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m.Shutdown()
if m.config.EncryptionEnabled() {
t.Fatalf("Expected encryption to be disabled")
}
}
func TestCreate_keyringOnly(t *testing.T) {
c := DefaultLANConfig()
c.BindAddr = getBindAddr().String()
keyring, err := NewKeyring(nil, make([]byte, 16))
if err != nil {
t.Fatalf("err: %s", err)
}
c.Keyring = keyring
m, err := Create(c)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m.Shutdown()
if !m.config.EncryptionEnabled() {
t.Fatalf("Expected encryption to be enabled")
}
}
func TestCreate_keyringAndSecretKey(t *testing.T) {
c := DefaultLANConfig()
c.BindAddr = getBindAddr().String()
keyring, err := NewKeyring(nil, make([]byte, 16))
if err != nil {
t.Fatalf("err: %s", err)
}
c.Keyring = keyring
c.SecretKey = []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
m, err := Create(c)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m.Shutdown()
if !m.config.EncryptionEnabled() {
t.Fatalf("Expected encryption to be enabled")
}
ringKeys := c.Keyring.GetKeys()
if !bytes.Equal(c.SecretKey, ringKeys[0]) {
t.Fatalf("Unexpected primary key %v", ringKeys[0])
}
}
func TestCreate_invalidLoggerSettings(t *testing.T) {
c := DefaultLANConfig()
c.BindAddr = getBindAddr().String()
c.Logger = log.New(ioutil.Discard, "", log.LstdFlags)
c.LogOutput = ioutil.Discard
_, err := Create(c)
if err == nil {
t.Fatal("Memberlist should not allow both LogOutput and Logger to be set, but it did not raise an error")
}
}
func TestCreate(t *testing.T) {
c := testConfig()
c.ProtocolVersion = ProtocolVersionMin
c.DelegateProtocolVersion = 13
c.DelegateProtocolMin = 12
c.DelegateProtocolMax = 24
m, err := Create(c)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m.Shutdown()
yield()
members := m.Members()
if len(members) != 1 {
t.Fatalf("bad number of members")
}
if members[0].PMin != ProtocolVersionMin {
t.Fatalf("bad: %#v", members[0])
}
if members[0].PMax != ProtocolVersionMax {
t.Fatalf("bad: %#v", members[0])
}
if members[0].PCur != c.ProtocolVersion {
t.Fatalf("bad: %#v", members[0])
}
if members[0].DMin != c.DelegateProtocolMin {
t.Fatalf("bad: %#v", members[0])
}
if members[0].DMax != c.DelegateProtocolMax {
t.Fatalf("bad: %#v", members[0])
}
if members[0].DCur != c.DelegateProtocolVersion {
t.Fatalf("bad: %#v", members[0])
}
}
func TestMemberList_CreateShutdown(t *testing.T) {
m := GetMemberlist(t)
m.schedule()
if err := m.Shutdown(); err != nil {
t.Fatalf("failed to shutdown %v", err)
}
}
func TestMemberList_ResolveAddr(t *testing.T) {
m := GetMemberlist(t)
if _, err := m.resolveAddr("localhost"); err != nil {
t.Fatalf("Could not resolve localhost: %s", err)
}
if _, err := m.resolveAddr("[::1]:80"); err != nil {
t.Fatalf("Could not understand ipv6 pair: %s", err)
}
if _, err := m.resolveAddr("[::1]"); err != nil {
t.Fatalf("Could not understand ipv6 non-pair")
}
if _, err := m.resolveAddr(":80"); err == nil {
t.Fatalf("Understood hostless port")
}
if _, err := m.resolveAddr("localhost:80"); err != nil {
t.Fatalf("Could not understand hostname port combo: %s", err)
}
if _, err := m.resolveAddr("localhost:80000"); err == nil {
t.Fatalf("Understood too high port")
}
if _, err := m.resolveAddr("127.0.0.1:80"); err != nil {
t.Fatalf("Could not understand hostname port combo: %s", err)
}
if _, err := m.resolveAddr("[2001:db8:a0b:12f0::1]:80"); err != nil {
t.Fatalf("Could not understand hostname port combo: %s", err)
}
if _, err := m.resolveAddr("127.0.0.1"); err != nil {
t.Fatalf("Could not understand IPv4 only %s", err)
}
if _, err := m.resolveAddr("[2001:db8:a0b:12f0::1]"); err != nil {
t.Fatalf("Could not understand IPv6 only %s", err)
}
}
type dnsHandler struct {
t *testing.T
}
func (h dnsHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
if len(r.Question) != 1 {
h.t.Fatalf("bad: %#v", r.Question)
}
name := "join.service.consul."
question := r.Question[0]
if question.Name != name || question.Qtype != dns.TypeANY {
h.t.Fatalf("bad: %#v", question)
}
m := new(dns.Msg)
m.SetReply(r)
m.Authoritative = true
m.RecursionAvailable = false
m.Answer = append(m.Answer, &dns.A{
Hdr: dns.RR_Header{
Name: name,
Rrtype: dns.TypeA,
Class: dns.ClassINET},
A: net.ParseIP("127.0.0.1"),
})
m.Answer = append(m.Answer, &dns.AAAA{
Hdr: dns.RR_Header{
Name: name,
Rrtype: dns.TypeAAAA,
Class: dns.ClassINET},
AAAA: net.ParseIP("2001:db8:a0b:12f0::1"),
})
if err := w.WriteMsg(m); err != nil {
h.t.Fatalf("err: %v", err)
}
}
func TestMemberList_ResolveAddr_TCP_First(t *testing.T) {
bind := "127.0.0.1:8600"
var wg sync.WaitGroup
wg.Add(1)
server := &dns.Server{
Addr: bind,
Handler: dnsHandler{t},
Net: "tcp",
NotifyStartedFunc: wg.Done,
}
defer server.Shutdown()
go func() {
if err := server.ListenAndServe(); err != nil && !strings.Contains(err.Error(), "use of closed network connection") {
t.Fatalf("err: %v", err)
}
}()
wg.Wait()
tmpFile, err := ioutil.TempFile("", "")
if err != nil {
t.Fatalf("err: %v", err)
}
defer os.Remove(tmpFile.Name())
content := []byte(fmt.Sprintf("nameserver %s", bind))
if _, err := tmpFile.Write(content); err != nil {
t.Fatalf("err: %v", err)
}
if err := tmpFile.Close(); err != nil {
t.Fatalf("err: %v", err)
}
m := GetMemberlist(t)
m.config.DNSConfigPath = tmpFile.Name()
m.setAlive()
m.schedule()
defer m.Shutdown()
// Try with and without the trailing dot.
hosts := []string{
"join.service.consul.",
"join.service.consul",
}
for _, host := range hosts {
ips, err := m.resolveAddr(host)
if err != nil {
t.Fatalf("err: %v", err)
}
port := uint16(m.config.BindPort)
expected := []ipPort{
ipPort{net.ParseIP("127.0.0.1"), port},
ipPort{net.ParseIP("2001:db8:a0b:12f0::1"), port},
}
if !reflect.DeepEqual(ips, expected) {
t.Fatalf("bad: %#v expected: %#v", ips, expected)
}
}
}
func TestMemberList_Members(t *testing.T) {
n1 := &Node{Name: "test"}
n2 := &Node{Name: "test2"}
n3 := &Node{Name: "test3"}
m := &Memberlist{}
nodes := []*nodeState{
&nodeState{Node: *n1, State: stateAlive},
&nodeState{Node: *n2, State: stateDead},
&nodeState{Node: *n3, State: stateSuspect},
}
m.nodes = nodes
members := m.Members()
if !reflect.DeepEqual(members, []*Node{n1, n3}) {
t.Fatalf("bad members")
}
}
func TestMemberlist_Join(t *testing.T) {
m1 := GetMemberlist(t)
m1.setAlive()
m1.schedule()
defer m1.Shutdown()
// Create a second node
c := DefaultLANConfig()
addr1 := getBindAddr()
c.Name = addr1.String()
c.BindAddr = addr1.String()
c.BindPort = m1.config.BindPort
m2, err := Create(c)
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
defer m2.Shutdown()
num, err := m2.Join([]string{m1.config.BindAddr})
if num != 1 {
t.Fatalf("unexpected 1: %d", num)
}
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
// Check the hosts
if len(m2.Members()) != 2 {
t.Fatalf("should have 2 nodes! %v", m2.Members())
}
if m2.estNumNodes() != 2 {
t.Fatalf("should have 2 nodes! %v", m2.Members())
}
}
type CustomMergeDelegate struct {
invoked bool
}
func (c *CustomMergeDelegate) NotifyMerge(nodes []*Node) error {
log.Printf("Cancel merge")
c.invoked = true
return fmt.Errorf("Custom merge canceled")
}
func TestMemberlist_Join_Cancel(t *testing.T) {
m1 := GetMemberlist(t)
merge1 := &CustomMergeDelegate{}
m1.config.Merge = merge1
m1.setAlive()
m1.schedule()
defer m1.Shutdown()
// Create a second node
c := DefaultLANConfig()
addr1 := getBindAddr()
c.Name = addr1.String()
c.BindAddr = addr1.String()
c.BindPort = m1.config.BindPort
m2, err := Create(c)
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
merge2 := &CustomMergeDelegate{}
m2.config.Merge = merge2
defer m2.Shutdown()
num, err := m2.Join([]string{m1.config.BindAddr})
if num != 0 {
t.Fatalf("unexpected 0: %d", num)
}
if !strings.Contains(err.Error(), "Custom merge canceled") {
t.Fatalf("unexpected err: %s", err)
}
// Check the hosts
if len(m2.Members()) != 1 {
t.Fatalf("should have 1 nodes! %v", m2.Members())
}
if len(m1.Members()) != 1 {
t.Fatalf("should have 1 nodes! %v", m1.Members())
}
// Check delegate invocation
if !merge1.invoked {
t.Fatalf("should invoke delegate")
}
if !merge2.invoked {
t.Fatalf("should invoke delegate")
}
}
type CustomAliveDelegate struct {
Ignore string
count int
}
func (c *CustomAliveDelegate) NotifyAlive(peer *Node) error {
c.count++
if peer.Name == c.Ignore {
return nil
}
log.Printf("Cancel alive")
return fmt.Errorf("Custom alive canceled")
}
func TestMemberlist_Join_Cancel_Passive(t *testing.T) {
m1 := GetMemberlist(t)
alive1 := &CustomAliveDelegate{
Ignore: m1.config.Name,
}
m1.config.Alive = alive1
m1.setAlive()
m1.schedule()
defer m1.Shutdown()
// Create a second node
c := DefaultLANConfig()
addr1 := getBindAddr()
c.Name = addr1.String()
c.BindAddr = addr1.String()
c.BindPort = m1.config.BindPort
m2, err := Create(c)
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
alive2 := &CustomAliveDelegate{
Ignore: c.Name,
}
m2.config.Alive = alive2
defer m2.Shutdown()
num, err := m2.Join([]string{m1.config.BindAddr})
if num != 1 {
t.Fatalf("unexpected 1: %d", num)
}
if err != nil {
t.Fatalf("err: %s", err)
}
// Check the hosts
if len(m2.Members()) != 1 {
t.Fatalf("should have 1 nodes! %v", m2.Members())
}
if len(m1.Members()) != 1 {
t.Fatalf("should have 1 nodes! %v", m1.Members())
}
// Check delegate invocation
if alive1.count == 0 {
t.Fatalf("should invoke delegate: %d", alive1.count)
}
if alive2.count == 0 {
t.Fatalf("should invoke delegate: %d", alive2.count)
}
}
func TestMemberlist_Join_protocolVersions(t *testing.T) {
c1 := testConfig()
c2 := testConfig()
c3 := testConfig()
c3.ProtocolVersion = ProtocolVersionMax
m1, err := Create(c1)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m1.Shutdown()
m2, err := Create(c2)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m2.Shutdown()
m3, err := Create(c3)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m3.Shutdown()
_, err = m1.Join([]string{c2.BindAddr})
if err != nil {
t.Fatalf("err: %s", err)
}
yield()
_, err = m1.Join([]string{c3.BindAddr})
if err != nil {
t.Fatalf("err: %s", err)
}
}
func TestMemberlist_Leave(t *testing.T) {
m1 := GetMemberlist(t)
m1.setAlive()
m1.schedule()
defer m1.Shutdown()
// Create a second node
c := DefaultLANConfig()
addr1 := getBindAddr()
c.Name = addr1.String()
c.BindAddr = addr1.String()
c.BindPort = m1.config.BindPort
c.GossipInterval = time.Millisecond
m2, err := Create(c)
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
defer m2.Shutdown()
num, err := m2.Join([]string{m1.config.BindAddr})
if num != 1 {
t.Fatalf("unexpected 1: %d", num)
}
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
// Check the hosts
if len(m2.Members()) != 2 {
t.Fatalf("should have 2 nodes! %v", m2.Members())
}
if len(m1.Members()) != 2 {
t.Fatalf("should have 2 nodes! %v", m2.Members())
}
// Leave
m1.Leave(time.Second)
// Wait for leave
time.Sleep(10 * time.Millisecond)
// m1 should think dead
if len(m1.Members()) != 1 {
t.Fatalf("should have 1 node")
}
if len(m2.Members()) != 1 {
t.Fatalf("should have 1 node")
}
}
func TestMemberlist_JoinShutdown(t *testing.T) {
m1 := GetMemberlist(t)
m1.setAlive()
m1.schedule()
// Create a second node
c := DefaultLANConfig()
addr1 := getBindAddr()
c.Name = addr1.String()
c.BindAddr = addr1.String()
c.BindPort = m1.config.BindPort
c.ProbeInterval = time.Millisecond
c.ProbeTimeout = 100 * time.Microsecond
c.SuspicionMaxTimeoutMult = 1
m2, err := Create(c)
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
defer m2.Shutdown()
num, err := m2.Join([]string{m1.config.BindAddr})
if num != 1 {
t.Fatalf("unexpected 1: %d", num)
}
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
// Check the hosts
if len(m2.Members()) != 2 {
t.Fatalf("should have 2 nodes! %v", m2.Members())
}
m1.Shutdown()
time.Sleep(10 * time.Millisecond)
if len(m2.Members()) != 1 {
t.Fatalf("should have 1 nodes! %v", m2.Members())
}
}
func TestMemberlist_delegateMeta(t *testing.T) {
c1 := testConfig()
c2 := testConfig()
c1.Delegate = &MockDelegate{meta: []byte("web")}
c2.Delegate = &MockDelegate{meta: []byte("lb")}
m1, err := Create(c1)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m1.Shutdown()
m2, err := Create(c2)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m2.Shutdown()
_, err = m1.Join([]string{c2.BindAddr})
if err != nil {
t.Fatalf("err: %s", err)
}
yield()
var roles map[string]string
// Check the roles of members of m1
m1m := m1.Members()
if len(m1m) != 2 {
t.Fatalf("bad: %#v", m1m)
}
roles = make(map[string]string)
for _, m := range m1m {
roles[m.Name] = string(m.Meta)
}
if r := roles[c1.Name]; r != "web" {
t.Fatalf("bad role for %s: %s", c1.Name, r)
}
if r := roles[c2.Name]; r != "lb" {
t.Fatalf("bad role for %s: %s", c2.Name, r)
}
// Check the roles of members of m2
m2m := m2.Members()
if len(m2m) != 2 {
t.Fatalf("bad: %#v", m2m)
}
roles = make(map[string]string)
for _, m := range m2m {
roles[m.Name] = string(m.Meta)
}
if r := roles[c1.Name]; r != "web" {
t.Fatalf("bad role for %s: %s", c1.Name, r)
}
if r := roles[c2.Name]; r != "lb" {
t.Fatalf("bad role for %s: %s", c2.Name, r)
}
}
func TestMemberlist_delegateMeta_Update(t *testing.T) {
c1 := testConfig()
c2 := testConfig()
mock1 := &MockDelegate{meta: []byte("web")}
mock2 := &MockDelegate{meta: []byte("lb")}
c1.Delegate = mock1
c2.Delegate = mock2
m1, err := Create(c1)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m1.Shutdown()
m2, err := Create(c2)
if err != nil {
t.Fatalf("err: %s", err)
}
defer m2.Shutdown()
_, err = m1.Join([]string{c2.BindAddr})
if err != nil {
t.Fatalf("err: %s", err)
}
yield()
// Update the meta data roles
mock1.meta = []byte("api")
mock2.meta = []byte("db")
m1.UpdateNode(0)
m2.UpdateNode(0)
yield()
// Check the updates have propagated
var roles map[string]string
// Check the roles of members of m1
m1m := m1.Members()
if len(m1m) != 2 {
t.Fatalf("bad: %#v", m1m)
}
roles = make(map[string]string)
for _, m := range m1m {
roles[m.Name] = string(m.Meta)
}
if r := roles[c1.Name]; r != "api" {
t.Fatalf("bad role for %s: %s", c1.Name, r)
}
if r := roles[c2.Name]; r != "db" {
t.Fatalf("bad role for %s: %s", c2.Name, r)
}
// Check the roles of members of m2
m2m := m2.Members()
if len(m2m) != 2 {
t.Fatalf("bad: %#v", m2m)
}
roles = make(map[string]string)
for _, m := range m2m {
roles[m.Name] = string(m.Meta)
}
if r := roles[c1.Name]; r != "api" {
t.Fatalf("bad role for %s: %s", c1.Name, r)
}
if r := roles[c2.Name]; r != "db" {
t.Fatalf("bad role for %s: %s", c2.Name, r)
}
}
func TestMemberlist_UserData(t *testing.T) {
m1, d1 := GetMemberlistDelegate(t)
d1.state = []byte("something")
m1.setAlive()
m1.schedule()
defer m1.Shutdown()
// Create a second delegate with things to send
d2 := &MockDelegate{}
d2.broadcasts = [][]byte{
[]byte("test"),
[]byte("foobar"),
}
d2.state = []byte("my state")
// Create a second node
c := DefaultLANConfig()
addr1 := getBindAddr()
c.Name = addr1.String()
c.BindAddr = addr1.String()
c.BindPort = m1.config.BindPort
c.GossipInterval = time.Millisecond
c.PushPullInterval = time.Millisecond
c.Delegate = d2
m2, err := Create(c)
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
num, err := m2.Join([]string{m1.config.BindAddr})
if num != 1 {
t.Fatalf("unexpected 1: %d", num)
}
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
defer m2.Shutdown()
// Check the hosts
if m2.NumMembers() != 2 {
t.Fatalf("should have 2 nodes! %v", m2.Members())
}
// Wait for a little while
time.Sleep(3 * time.Millisecond)
// Ensure we got the messages
if len(d1.msgs) != 2 {
t.Fatalf("should have 2 messages!")
}
if !reflect.DeepEqual(d1.msgs[0], []byte("test")) {
t.Fatalf("bad msg %v", d1.msgs[0])
}
if !reflect.DeepEqual(d1.msgs[1], []byte("foobar")) {
t.Fatalf("bad msg %v", d1.msgs[1])
}
// Check the push/pull state
if !reflect.DeepEqual(d1.remoteState, []byte("my state")) {
t.Fatalf("bad state %s", d1.remoteState)
}
if !reflect.DeepEqual(d2.remoteState, []byte("something")) {
t.Fatalf("bad state %s", d2.remoteState)
}
}
func TestMemberlist_SendTo(t *testing.T) {
m1, d1 := GetMemberlistDelegate(t)
m1.setAlive()
m1.schedule()
defer m1.Shutdown()
// Create a second delegate with things to send
d2 := &MockDelegate{}
// Create a second node
c := DefaultLANConfig()
addr1 := getBindAddr()
c.Name = addr1.String()
c.BindAddr = addr1.String()
c.BindPort = m1.config.BindPort
c.GossipInterval = time.Millisecond
c.PushPullInterval = time.Millisecond
c.Delegate = d2
m2, err := Create(c)
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
defer m2.Shutdown()
num, err := m2.Join([]string{m1.config.BindAddr})
if num != 1 {
t.Fatalf("unexpected 1: %d", num)
}
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
// Check the hosts
if m2.NumMembers() != 2 {
t.Fatalf("should have 2 nodes! %v", m2.Members())
}
// Try to do a direct send
m2Addr := &net.UDPAddr{IP: addr1,
Port: c.BindPort}
if err := m1.SendTo(m2Addr, []byte("ping")); err != nil {
t.Fatalf("err: %v", err)
}