func main() {
requester, _ := zmq.NewSocket(zmq.REQ)
defer requester.Close()
requester.Connect("tcp://localhost:5555")
major, minor, patch := zmq.Version()
fmt.Printf("Current 0MQ version is %d.%d.%d\n", major, minor, patch)
for request := 0; request < 10; request++ {
requester.Send("Hello", 0)
reply, _ := requester.Recv(0)
fmt.Printf("Received reply %d [%s]\n", request, reply)
}
}
func TestAuthCurvePublic(t *testing.T) {
if _, minor, _ := zmq.Version(); minor < 2 {
t.Skip("CurvePublic not available in ZeroMQ versions prior to 4.2.0")
}
expected := "Yne@$w-vo<fVvi]a<NY6T1ed:M$fCG*[IaLV{hID"
public, err := zmq.AuthCurvePublic("D:)Q[IlAW!ahhC2ac:9*A}h:p?([4%wOTJ%JR%cs")
if err != nil {
t.Fatal(err)
}
if public != expected {
t.Fatalf("Expected: %s, got: %s", expected, public)
}
public, err = zmq.AuthCurvePublic("blabla")
if err == nil {
t.Fatal("Error expected")
}
}
func TestRemoteEndpoint(t *testing.T) {
if _, minor, _ := zmq.Version(); minor < 1 {
t.Skip("RemoteEndpoint not avalable in ZeroMQ versions prior to 4.1.0")
}
addr := "tcp://127.0.0.1:9560"
peer := "127.0.0.1"
var rep, req *zmq.Socket
defer func() {
for _, s := range []*zmq.Socket{rep, req} {
if s != nil {
s.SetLinger(0)
s.Close()
}
}
}()
rep, err := zmq.NewSocket(zmq.REP)
if err != nil {
t.Fatal("NewSocket:", err)
}
req, err = zmq.NewSocket(zmq.REQ)
if err != nil {
t.Fatal("NewSocket:", err)
}
if err = rep.Bind(addr); err != nil {
t.Fatal("rep.Bind:", err)
}
if err = req.Connect(addr); err != nil {
t.Fatal("req.Connect:", err)
}
tmp := "test"
if _, err = req.Send(tmp, 0); err != nil {
t.Fatal("req.Send:", err)
}
// get message with peer address (remote endpoint)
msg, props, err := rep.RecvWithMetadata(0, "Peer-Address")
if err != nil {
t.Fatal("rep.RecvWithMetadata:", err)
return
}
if msg != tmp {
t.Errorf("rep.RecvWithMetadata: expected %q, got %q", tmp, msg)
}
if p := props["Peer-Address"]; p != peer {
t.Errorf("rep.RecvWithMetadata: expected Peer-Address == %q, got %q", peer, p)
}
err = rep.Close()
rep = nil
if err != nil {
t.Fatal("rep.Close:", err)
}
err = req.Close()
req = nil
if err != nil {
t.Fatal("req.Close:", err)
}
}
func TestVersion(t *testing.T) {
major, _, _ := zmq.Version()
if major != 4 {
t.Errorf("Expected major version 4, got %d", major)
}
}
func TestSecurityCurve(t *testing.T) {
time.Sleep(100 * time.Millisecond)
var handler, server, client *zmq.Socket
defer func() {
for _, s := range []*zmq.Socket{handler} {
if s != nil {
s.SetLinger(0)
s.Close()
}
}
}()
if _, minor, _ := zmq.Version(); minor >= 1 && !zmq.HasCurve() {
t.Skip("Curve not available")
}
// Generate new keypairs for this test
client_public, client_secret, err := zmq.NewCurveKeypair()
if err != nil {
t.Fatal("NewCurveKeypair:", err)
}
server_public, server_secret, err := zmq.NewCurveKeypair()
if err != nil {
t.Fatal("NewCurveKeypair:", err)
}
handler, err = zmq.NewSocket(zmq.REP)
if err != nil {
t.Fatal("NewSocket:", err)
}
err = handler.Bind("inproc://zeromq.zap.01")
if err != nil {
t.Fatal("handler.Bind:", err)
}
doHandler := func(state zmq.State) error {
msg, err := handler.RecvMessage(0)
if err != nil {
return err // Terminating
}
version := msg[0]
sequence := msg[1]
// domain := msg[2]
// address := msg[3]
identity := msg[4]
mechanism := msg[5]
client_key := msg[6]
client_key_text := zmq.Z85encode(client_key)
if version != "1.0" {
return errors.New("version != 1.0")
}
if mechanism != "CURVE" {
return errors.New("mechanism != CURVE")
}
if identity != "IDENT" {
return errors.New("identity != IDENT")
}
if client_key_text == client_public {
handler.SendMessage(version, sequence, "200", "OK", "anonymous", "")
} else {
handler.SendMessage(version, sequence, "400", "Invalid client public key", "", "")
}
return nil
}
doQuit := func(i interface{}) error {
err := handler.Close()
handler = nil
if err != nil {
t.Error("handler.Close:", err)
}
return errors.New("Quit")
}
quit := make(chan interface{})
reactor := zmq.NewReactor()
reactor.AddSocket(handler, zmq.POLLIN, doHandler)
reactor.AddChannel(quit, 0, doQuit)
go func() {
reactor.Run(100 * time.Millisecond)
quit <- true
}()
defer func() {
quit <- true
<-quit
close(quit)
}()
// Server socket will accept connections
server, err = zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
err = server.SetCurveServer(1)
if err != nil {
t.Fatal("server.SetCurveServer(1):", err)
}
err = server.SetCurveSecretkey(server_secret)
if err != nil {
t.Fatal("server.SetCurveSecretkey:", err)
}
err = server.SetIdentity("IDENT")
if err != nil {
t.Fatal("server.SetIdentity:", err)
}
server.Bind("tcp://127.0.0.1:9998")
if err != nil {
t.Fatal("server.Bind:", err)
}
err = server.SetRcvtimeo(time.Second)
if err != nil {
t.Fatal("server.SetRcvtimeo:", err)
}
// Check CURVE security with valid credentials
client, err = zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
err = client.SetCurveServerkey(server_public)
if err != nil {
t.Fatal("client.SetCurveServerkey:", err)
}
err = client.SetCurvePublickey(client_public)
if err != nil {
t.Fatal("client.SetCurvePublickey:", err)
}
err = client.SetCurveSecretkey(client_secret)
if err != nil {
t.Fatal("client.SetCurveSecretkey:", err)
}
err = client.Connect("tcp://127.0.0.1:9998")
if err != nil {
t.Fatal("client.Connect:", err)
}
msg, err := bounce(server, client)
if err != nil {
t.Error(msg, err)
}
err = client.Close()
client = nil
if err != nil {
t.Fatal("client.Close:", err)
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with a garbage server key
// This will be caught by the curve_server class, not passed to ZAP
garbage_key := "0000111122223333444455556666777788889999"
client, err = zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
err = client.SetCurveServerkey(garbage_key)
if err != nil {
t.Fatal("client.SetCurveServerkey:", err)
}
err = client.SetCurvePublickey(client_public)
if err != nil {
t.Fatal("client.SetCurvePublickey:", err)
}
err = client.SetCurveSecretkey(client_secret)
if err != nil {
t.Fatal("client.SetCurveSecretkey:", err)
}
err = client.Connect("tcp://127.0.0.1:9998")
if err != nil {
t.Fatal("client.Connect:", err)
}
err = client.SetRcvtimeo(time.Second)
if err != nil {
t.Fatal("client.SetRcvtimeo:", err)
}
_, err = bounce(server, client)
if err == nil {
t.Error("Expected failure, got success")
}
client.SetLinger(0)
err = client.Close()
client = nil
if err != nil {
t.Fatal("client.Close:", err)
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with a garbage client secret key
// This will be caught by the curve_server class, not passed to ZAP
client, err = zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
err = client.SetCurveServerkey(server_public)
if err != nil {
t.Fatal("client.SetCurveServerkey:", err)
}
err = client.SetCurvePublickey(garbage_key)
if err != nil {
t.Fatal("client.SetCurvePublickey:", err)
}
err = client.SetCurveSecretkey(client_secret)
if err != nil {
t.Fatal("client.SetCurveSecretkey:", err)
}
err = client.Connect("tcp://127.0.0.1:9998")
if err != nil {
t.Fatal("client.Connect:", err)
}
err = client.SetRcvtimeo(time.Second)
if err != nil {
t.Fatal("client.SetRcvtimeo:", err)
}
_, err = bounce(server, client)
if err == nil {
t.Error("Expected failure, got success")
}
client.SetLinger(0)
err = client.Close()
client = nil
if err != nil {
t.Fatal("client.Close:", err)
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with a garbage client secret key
// This will be caught by the curve_server class, not passed to ZAP
client, err = zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
err = client.SetCurveServerkey(server_public)
if err != nil {
t.Fatal("client.SetCurveServerkey:", err)
}
err = client.SetCurvePublickey(client_public)
if err != nil {
t.Fatal("client.SetCurvePublickey:", err)
}
err = client.SetCurveSecretkey(garbage_key)
if err != nil {
t.Fatal("client.SetCurveSecretkey:", err)
}
err = client.Connect("tcp://127.0.0.1:9998")
if err != nil {
t.Fatal("client.Connect:", err)
}
err = client.SetRcvtimeo(time.Second)
if err != nil {
t.Fatal("client.SetRcvtimeo:", err)
}
_, err = bounce(server, client)
if err == nil {
t.Error("Expected failure, got success")
}
client.SetLinger(0)
err = client.Close()
client = nil
if err != nil {
t.Fatal("client.Close:", err)
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with bogus client credentials
// This must be caught by the ZAP handler
bogus_public, bogus_secret, _ := zmq.NewCurveKeypair()
client, err = zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
err = client.SetCurveServerkey(server_public)
if err != nil {
t.Fatal("client.SetCurveServerkey:", err)
}
err = client.SetCurvePublickey(bogus_public)
if err != nil {
t.Fatal("client.SetCurvePublickey:", err)
}
err = client.SetCurveSecretkey(bogus_secret)
if err != nil {
t.Fatal("client.SetCurveSecretkey:", err)
}
err = client.Connect("tcp://127.0.0.1:9998")
if err != nil {
t.Fatal("client.Connect:", err)
}
err = client.SetRcvtimeo(time.Second)
if err != nil {
t.Fatal("client.SetRcvtimeo:", err)
}
_, err = bounce(server, client)
if err == nil {
t.Error("Expected failure, got success")
}
client.SetLinger(0)
err = client.Close()
client = nil
if err != nil {
t.Fatal("client.Close:", err)
}
// Shutdown
err = server.Close()
server = nil
if err != nil {
t.Error("server.Close:", err)
}
}
func Example_test_version() {
major, _, _ := zmq.Version()
fmt.Println("Version:", major)
// Output:
// Version: 4
}
func TestAuthStart(t *testing.T) {
if _, minor, _ := zmq.Version(); minor >= 1 && !zmq.HasCurve() {
t.Skip("Curve not available")
}
type Meta struct {
key string
value string
ok bool
}
zmq.AuthSetVerbose(false)
// Start authentication engine
err := zmq.AuthStart()
if err != nil {
t.Fatal("AuthStart:", err)
}
defer zmq.AuthStop()
zmq.AuthSetMetadataHandler(
func(version, request_id, domain, address, identity, mechanism string, credentials ...string) (metadata map[string]string) {
return map[string]string{
"Identity": identity,
"User-Id": "anonymous",
"Hello": "World!",
"Foo": "Bar",
}
})
zmq.AuthAllow("domain1", "127.0.0.1")
// We need two certificates, one for the client and one for
// the server. The client must know the server's public key
// to make a CURVE connection.
client_public, client_secret, err := zmq.NewCurveKeypair()
if err != nil {
t.Fatal("NewCurveKeypair:", err)
}
server_public, server_secret, err := zmq.NewCurveKeypair()
if err != nil {
t.Fatal("NewCurveKeypair:", err)
}
// Tell authenticator to use this public client key
zmq.AuthCurveAdd("domain1", client_public)
// Create and bind server socket
server, err := zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
defer func() {
server.SetLinger(0)
server.Close()
}()
server.SetIdentity("Server1")
server.ServerAuthCurve("domain1", server_secret)
err = server.Bind("tcp://*:9000")
if err != nil {
t.Fatal("server.Bind:", err)
}
// Create and connect client socket
client, err := zmq.NewSocket(zmq.DEALER)
if err != nil {
t.Fatal("NewSocket:", err)
}
defer func() {
client.SetLinger(0)
client.Close()
}()
server.SetIdentity("Client1")
client.ClientAuthCurve(server_public, client_public, client_secret)
err = client.Connect("tcp://127.0.0.1:9000")
if err != nil {
t.Fatal("client.Connect:", err)
}
// Send a message from client to server
msg := []string{"Greetings", "Earthlings!"}
_, err = client.SendMessage(msg[0], msg[1])
if err != nil {
t.Fatal("client.SendMessage:", err)
}
// Receive message and metadata on the server
tests := []Meta{
{"Identity", "Server1", true},
{"User-Id", "anonymous", true},
{"Socket-Type", "DEALER", true},
{"Hello", "World!", true},
{"Foo", "Bar", true},
{"Fuz", "", false},
}
keys := make([]string, len(tests))
for i, test := range tests {
keys[i] = test.key
}
message, metadata, err := server.RecvMessageWithMetadata(0, keys...)
if err != nil {
t.Fatal("server.RecvMessageWithMetadata:", err)
}
if !arrayEqual(message, msg) {
t.Errorf("Received message was %q, expected %q", message, msg)
}
if _, minor, _ := zmq.Version(); minor < 1 {
t.Log("Metadata not avalable in ZeroMQ versions prior to 4.1.0")
} else {
for _, test := range tests {
value, ok := metadata[test.key]
if value != test.value || ok != test.ok {
t.Errorf("Metadata %s, expected %q %v, got %q %v", test.key, test.value, test.ok, value, ok)
}
}
}
}
func main() {
major, minor, patch := zmq.Version()
fmt.Printf("Current 0MQ version is %d.%d.%d\n", major, minor, patch)
}
func ExampleAuthStart() {
checkErr := func(err error) bool {
if err == nil {
return false
}
log.Println(err)
return true
}
zmq.AuthSetVerbose(false)
// Start authentication engine
err := zmq.AuthStart()
if checkErr(err) {
return
}
defer zmq.AuthStop()
zmq.AuthSetMetadataHandler(
func(version, request_id, domain, address, identity, mechanism string, credentials ...string) (metadata map[string]string) {
return map[string]string{
"Identity": identity,
"User-Id": "anonymous",
"Hello": "World!",
"Foo": "Bar",
}
})
zmq.AuthAllow("domain1", "127.0.0.1")
// We need two certificates, one for the client and one for
// the server. The client must know the server's public key
// to make a CURVE connection.
client_public, client_secret, err := zmq.NewCurveKeypair()
if checkErr(err) {
return
}
server_public, server_secret, err := zmq.NewCurveKeypair()
if checkErr(err) {
return
}
// Tell authenticator to use this public client key
zmq.AuthCurveAdd("domain1", client_public)
// Create and bind server socket
server, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
defer server.Close()
server.SetIdentity("Server1")
server.ServerAuthCurve("domain1", server_secret)
err = server.Bind("tcp://*:9000")
if checkErr(err) {
return
}
// Create and connect client socket
client, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
defer client.Close()
server.SetIdentity("Client1")
client.ClientAuthCurve(server_public, client_public, client_secret)
err = client.Connect("tcp://127.0.0.1:9000")
if checkErr(err) {
return
}
// Send a message from client to server
_, err = client.SendMessage("Greatings", "Earthlings!")
if checkErr(err) {
return
}
// Receive message and metadata on the server
keys := []string{"Identity", "User-Id", "Socket-Type", "Hello", "Foo", "Fuz"}
message, metadata, err := server.RecvMessageWithMetadata(0, keys...)
if checkErr(err) {
return
}
fmt.Println(message)
if _, minor, _ := zmq.Version(); minor < 1 {
// Metadata requires at least ZeroMQ version 4.1
fmt.Println(`Identity: "Server1" true`)
fmt.Println(`User-Id: "anonymous" true`)
fmt.Println(`Socket-Type: "DEALER" true`)
fmt.Println(`Hello: "World!" true`)
fmt.Println(`Foo: "Bar" true`)
fmt.Println(`Fuz: "" false`)
} else {
for _, key := range keys {
value, ok := metadata[key]
fmt.Printf("%v: %q %v\n", key, value, ok)
}
}
// Output:
// [Greatings Earthlings!]
// Identity: "Server1" true
// User-Id: "anonymous" true
// Socket-Type: "DEALER" true
// Hello: "World!" true
// Foo: "Bar" true
// Fuz: "" false
}