Exemplo n.º 1
0
func Example_test_version() {
	major, _, _ := zmq.Version()
	fmt.Println("Version:", major)
	// Output:
	// Version: 4
}
Exemplo n.º 2
0
func Example_test_remote_endpoint() {

	if _, minor, _ := zmq.Version(); minor < 1 {
		fmt.Println("127.0.0.1")
		fmt.Println("Done")
		return
	}

	addr := "tcp://127.0.0.1:9560"

	rep, err := zmq.NewSocket(zmq.REP)
	if checkErr(err) {
		return
	}
	req, err := zmq.NewSocket(zmq.REQ)
	if checkErr(err) {
		rep.Close()
		return
	}

	err = rep.Bind(addr)
	if checkErr(err) {
		rep.Close()
		req.Close()
		return
	}
	err = req.Connect(addr)
	if checkErr(err) {
		rep.Close()
		req.Close()
		return
	}

	tmp := "test"
	_, err = req.Send(tmp, 0)
	if checkErr(err) {
		rep.Close()
		req.Close()
		return
	}

	// get message with peer address (remote endpoint)
	msg, props, err := rep.RecvWithMetadata(0, "Peer-Address")
	if checkErr(err) {
		rep.Close()
		req.Close()
		return
	}
	if msg != tmp {
		fmt.Println(tmp, "!=", msg)
	}

	fmt.Println(props["Peer-Address"])

	err = rep.Close()
	if checkErr(err) {
		req.Close()
		return
	}

	err = req.Close()
	if checkErr(err) {
		return
	}

	fmt.Println("Done")
	// Output:
	// 127.0.0.1
	// Done
}
Exemplo n.º 3
0
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("Greetings", "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:
	// [Greetings Earthlings!]
	// Identity: "Server1" true
	// User-Id: "anonymous" true
	// Socket-Type: "DEALER" true
	// Hello: "World!" true
	// Foo: "Bar" true
	// Fuz: "" false
}
Exemplo n.º 4
0
func main() {
	major, minor, patch := zmq.Version()
	fmt.Printf("Current 0MQ version is %d.%d.%d\n", major, minor, patch)
}