Example #1
0
func main() {
	lbbroker := &lbbroker_t{}
	lbbroker.frontend, _ = zmq.NewSocket(zmq.ROUTER)
	lbbroker.backend, _ = zmq.NewSocket(zmq.ROUTER)
	defer lbbroker.frontend.Close()
	defer lbbroker.backend.Close()
	lbbroker.frontend.Bind("ipc://frontend.ipc")
	lbbroker.backend.Bind("ipc://backend.ipc")

	for client_nbr := 0; client_nbr < NBR_CLIENTS; client_nbr++ {
		go client_task()
	}
	for worker_nbr := 0; worker_nbr < NBR_WORKERS; worker_nbr++ {
		go worker_task()
	}

	//  Queue of available workers
	lbbroker.workers = make([]string, 0, 10)

	//  Prepare reactor and fire it up
	lbbroker.reactor = zmq.NewReactor()
	lbbroker.reactor.AddSocket(lbbroker.backend, zmq.POLLIN,
		func(e zmq.State) error { return handle_backend(lbbroker) })
	lbbroker.reactor.Run(-1)
}
Example #2
0
func New(primary bool, local, remote string) (bstar *Bstar, err error) {

	bstar = &Bstar{}

	//  Initialize the Binary Star
	bstar.Reactor = zmq.NewReactor()
	if primary {
		bstar.state = state_PRIMARY
	} else {
		bstar.state = state_BACKUP
	}

	//  Create publisher for state going to peer
	bstar.statepub, err = zmq.NewSocket(zmq.PUB)
	bstar.statepub.Bind(local)

	//  Create subscriber for state coming from peer
	bstar.statesub, err = zmq.NewSocket(zmq.SUB)
	bstar.statesub.SetSubscribe("")
	bstar.statesub.Connect(remote)

	//  Set-up basic reactor events
	bstar.Reactor.AddChannelTime(time.Tick(bstar_HEARTBEAT), 1,
		func(i interface{}) error { return bstar.send_state() })
	bstar.Reactor.AddSocket(bstar.statesub, zmq.POLLIN,
		func(e zmq.State) error { return bstar.recv_state() })

	return
}
Example #3
0
func main() {

	srv := &clonesrv_t{
		port:  5556,
		kvmap: make(map[string]*kvmsg.Kvmsg),
	}

	//  Set up our clone server sockets
	srv.snapshot, _ = zmq.NewSocket(zmq.ROUTER)
	srv.snapshot.Bind(fmt.Sprint("tcp://*:", srv.port))
	srv.publisher, _ = zmq.NewSocket(zmq.PUB)
	srv.publisher.Bind(fmt.Sprint("tcp://*:", srv.port+1))
	srv.collector, _ = zmq.NewSocket(zmq.PULL)
	srv.collector.Bind(fmt.Sprint("tcp://*:", srv.port+2))

	//  Register our handlers with reactor
	reactor := zmq.NewReactor()
	reactor.AddSocket(srv.snapshot, zmq.POLLIN,
		func(e zmq.State) error { return snapshots(srv) })
	reactor.AddSocket(srv.collector, zmq.POLLIN,
		func(e zmq.State) error { return collector(srv) })
	reactor.AddChannelTime(time.Tick(1000*time.Millisecond), 1,
		func(v interface{}) error { return flush_ttl(srv) })

	log.Println(reactor.Run(100 * time.Millisecond)) // precision: .1 seconds
}
Example #4
0
func Example_multiple_contexts() {
	chQuit := make(chan interface{})
	chReactor := make(chan bool)

	addr1 := "tcp://127.0.0.1:9997"
	addr2 := "tcp://127.0.0.1:9998"

	serv_ctx1, err := zmq.NewContext()
	if checkErr(err) {
		return
	}
	serv1, err := serv_ctx1.NewSocket(zmq.REP)
	if checkErr(err) {
		return
	}
	err = serv1.Bind(addr1)
	if checkErr(err) {
		return
	}
	defer func() {
		serv1.Close()
		serv_ctx1.Term()
	}()

	serv_ctx2, err := zmq.NewContext()
	if checkErr(err) {
		return
	}
	serv2, err := serv_ctx2.NewSocket(zmq.REP)
	if checkErr(err) {
		return
	}
	err = serv2.Bind(addr2)
	if checkErr(err) {
		return
	}
	defer func() {
		serv2.Close()
		serv_ctx2.Term()
	}()

	new_service := func(sock *zmq.Socket, addr string) {
		socket_handler := func(state zmq.State) error {
			msg, err := sock.RecvMessage(0)
			if checkErr(err) {
				return err
			}
			_, err = sock.SendMessage(addr, msg)
			if checkErr(err) {
				return err
			}
			return nil
		}
		quit_handler := func(interface{}) error {
			return errors.New("quit")
		}

		defer func() {
			chReactor <- true
		}()

		reactor := zmq.NewReactor()
		reactor.AddSocket(sock, zmq.POLLIN, socket_handler)
		reactor.AddChannel(chQuit, 1, quit_handler)
		err = reactor.Run(100 * time.Millisecond)
		fmt.Println(err)
	}

	go new_service(serv1, addr1)
	go new_service(serv2, addr2)

	time.Sleep(time.Second)

	// default context

	sock1, err := zmq.NewSocket(zmq.REQ)
	if checkErr(err) {
		return
	}
	sock2, err := zmq.NewSocket(zmq.REQ)
	if checkErr(err) {
		return
	}
	err = sock1.Connect(addr1)
	if checkErr(err) {
		return
	}
	err = sock2.Connect(addr2)
	if checkErr(err) {
		return
	}
	_, err = sock1.SendMessage(addr1)
	if checkErr(err) {
		return
	}
	_, err = sock2.SendMessage(addr2)
	if checkErr(err) {
		return
	}
	msg, err := sock1.RecvMessage(0)
	fmt.Println(err, msg)
	msg, err = sock2.RecvMessage(0)
	fmt.Println(err, msg)
	err = sock1.Close()
	if checkErr(err) {
		return
	}
	err = sock2.Close()
	if checkErr(err) {
		return
	}

	// non-default contexts

	ctx1, err := zmq.NewContext()
	if checkErr(err) {
		return
	}
	ctx2, err := zmq.NewContext()
	if checkErr(err) {
		return
	}
	sock1, err = ctx1.NewSocket(zmq.REQ)
	if checkErr(err) {
		return
	}
	sock2, err = ctx2.NewSocket(zmq.REQ)
	if checkErr(err) {
		return
	}
	err = sock1.Connect(addr1)
	if checkErr(err) {
		return
	}
	err = sock2.Connect(addr2)
	if checkErr(err) {
		return
	}
	_, err = sock1.SendMessage(addr1)
	if checkErr(err) {
		return
	}
	_, err = sock2.SendMessage(addr2)
	if checkErr(err) {
		return
	}
	msg, err = sock1.RecvMessage(0)
	fmt.Println(err, msg)
	msg, err = sock2.RecvMessage(0)
	fmt.Println(err, msg)
	err = sock1.Close()
	if checkErr(err) {
		return
	}
	err = sock2.Close()
	if checkErr(err) {
		return
	}

	err = ctx1.Term()
	if checkErr(err) {
		return
	}
	err = ctx2.Term()
	if checkErr(err) {
		return
	}

	// close(chQuit) doesn't work because the reactor removes closed channels, instead of acting on them
	chQuit <- true
	<-chReactor
	chQuit <- true
	<-chReactor

	fmt.Println("Done")
	// Output:
	// <nil> [tcp://127.0.0.1:9997 tcp://127.0.0.1:9997]
	// <nil> [tcp://127.0.0.1:9998 tcp://127.0.0.1:9998]
	// <nil> [tcp://127.0.0.1:9997 tcp://127.0.0.1:9997]
	// <nil> [tcp://127.0.0.1:9998 tcp://127.0.0.1:9998]
	// quit
	// quit
	// Done
}
Example #5
0
func Example_test_security_plain() {

	time.Sleep(100 * time.Millisecond)

	handler, err := zmq.NewSocket(zmq.REP)
	if checkErr(err) {
		return
	}
	err = handler.Bind("inproc://zeromq.zap.01")
	if checkErr(err) {
		return
	}

	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]
		username := msg[6]
		password := msg[7]

		if version != "1.0" {
			return errors.New("version != 1.0")
		}
		if mechanism != "PLAIN" {
			return errors.New("mechanism != PLAIN")
		}
		if identity != "IDENT" {
			return errors.New("identity != IDENT")
		}

		if username == "admin" && password == "password" {
			handler.SendMessage(version, sequence, "200", "OK", "anonymous", "")
		} else {
			handler.SendMessage(version, sequence, "400", "Invalid username or password", "", "")
		}
		return nil
	}

	doQuit := func(i interface{}) error {
		err := handler.Close()
		checkErr(err)
		fmt.Println("Handler closed")
		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)
		fmt.Println("Reactor finished")
		quit <- true
	}()
	defer func() {
		quit <- true
		<-quit
		close(quit)
	}()

	//  Server socket will accept connections
	server, err := zmq.NewSocket(zmq.DEALER)
	if checkErr(err) {
		return
	}
	err = server.SetIdentity("IDENT")
	if checkErr(err) {
		return
	}
	err = server.SetPlainServer(1)
	if checkErr(err) {
		return
	}
	err = server.Bind("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}

	//  Check PLAIN security with correct username/password
	client, err := zmq.NewSocket(zmq.DEALER)
	if checkErr(err) {
		return
	}
	err = client.SetPlainUsername("admin")
	if checkErr(err) {
		return
	}
	err = client.SetPlainPassword("password")
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}
	bounce(server, client, false)
	err = client.Close()
	if checkErr(err) {
		return
	}

	//  Check PLAIN security with badly configured client (as_server)
	//  This will be caught by the plain_server class, not passed to ZAP
	client, err = zmq.NewSocket(zmq.DEALER)
	if checkErr(err) {
		return
	}
	client.SetPlainServer(1)
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}
	err = client.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	err = server.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	bounce(server, client, true)
	client.SetLinger(0)
	err = client.Close()
	if checkErr(err) {
		return
	}

	err = server.Close()
	checkErr(err)

	fmt.Println("Done")
	// Output:
	// 5 error
	// Done
	// Handler closed
	// Reactor finished

}
Example #6
0
func Example_test_security_null() {

	time.Sleep(100 * time.Millisecond)

	handler, err := zmq.NewSocket(zmq.REP)
	if checkErr(err) {
		return
	}
	err = handler.Bind("inproc://zeromq.zap.01")
	if checkErr(err) {
		return
	}

	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]

		if version != "1.0" {
			return errors.New("version != 1.0")
		}
		if mechanism != "NULL" {
			return errors.New("mechanism != NULL")
		}

		if domain == "TEST" {
			handler.SendMessage(version, sequence, "200", "OK", "anonymous", "")
		} else {
			handler.SendMessage(version, sequence, "400", "BAD DOMAIN", "", "")
		}
		return nil
	}

	doQuit := func(i interface{}) error {
		err := handler.Close()
		checkErr(err)
		fmt.Println("Handler closed")
		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)
		fmt.Println("Reactor finished")
		quit <- true
	}()
	defer func() {
		quit <- true
		<-quit
		close(quit)
	}()

	//  We bounce between a binding server and a connecting client
	server, err := zmq.NewSocket(zmq.DEALER)
	if checkErr(err) {
		return
	}
	client, err := zmq.NewSocket(zmq.DEALER)
	if checkErr(err) {
		return
	}

	//  We first test client/server with no ZAP domain
	//  Libzmq does not call our ZAP handler, the connect must succeed
	err = server.Bind("tcp://127.0.0.1:9683")
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9683")
	if checkErr(err) {
		return
	}
	bounce(server, client, false)
	server.Unbind("tcp://127.0.0.1:9683")
	client.Disconnect("tcp://127.0.0.1:9683")

	//  Now define a ZAP domain for the server; this enables
	//  authentication. We're using the wrong domain so this test
	//  must fail.
	err = server.SetZapDomain("WRONG")
	if checkErr(err) {
		return
	}
	err = server.Bind("tcp://127.0.0.1:9687")
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9687")
	if checkErr(err) {
		return
	}
	err = client.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	err = server.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	bounce(server, client, true)
	server.Unbind("tcp://127.0.0.1:9687")
	client.Disconnect("tcp://127.0.0.1:9687")

	//  Now use the right domain, the test must pass
	err = server.SetZapDomain("TEST")
	if checkErr(err) {
		return
	}
	err = server.Bind("tcp://127.0.0.1:9688")
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9688")
	if checkErr(err) {
		return
	}
	bounce(server, client, false)
	server.Unbind("tcp://127.0.0.1:9688")
	client.Disconnect("tcp://127.0.0.1:9688")

	err = client.Close()
	checkErr(err)
	err = server.Close()
	checkErr(err)

	fmt.Println("Done")
	// Output:
	// 5 error
	// Done
	// Handler closed
	// Reactor finished
}
Example #7
0
func Example_test_security_curve() {

	time.Sleep(100 * time.Millisecond)

	//  Generate new keypairs for this test
	client_public, client_secret, err := zmq.NewCurveKeypair()
	if checkErr(err) {
		return
	}
	server_public, server_secret, err := zmq.NewCurveKeypair()
	if checkErr(err) {
		return
	}

	handler, err := zmq.NewSocket(zmq.REP)
	if checkErr(err) {
		return
	}
	err = handler.Bind("inproc://zeromq.zap.01")
	if checkErr(err) {
		return
	}

	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()
		checkErr(err)
		fmt.Println("Handler closed")
		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)
		fmt.Println("Reactor finished")
		quit <- true
	}()
	defer func() {
		quit <- true
		<-quit
		close(quit)
	}()

	//  Server socket will accept connections
	server, err := zmq.NewSocket(zmq.DEALER)
	if checkErr(err) {
		return
	}
	err = server.SetCurveServer(1)
	if checkErr(err) {
		return
	}
	err = server.SetCurveSecretkey(server_secret)
	if checkErr(err) {
		return
	}
	err = server.SetIdentity("IDENT")
	if checkErr(err) {
		return
	}
	server.Bind("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}

	err = server.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}

	//  Check CURVE security with valid credentials
	client, err := zmq.NewSocket(zmq.DEALER)
	if checkErr(err) {
		return
	}
	err = client.SetCurveServerkey(server_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurvePublickey(client_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurveSecretkey(client_secret)
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}
	bounce(server, client, false)
	err = client.Close()
	if checkErr(err) {
		return
	}

	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 checkErr(err) {
		return
	}
	err = client.SetCurveServerkey(garbage_key)
	if checkErr(err) {
		return
	}
	err = client.SetCurvePublickey(client_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurveSecretkey(client_secret)
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}
	err = client.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	bounce(server, client, true)
	client.SetLinger(0)
	err = client.Close()
	if checkErr(err) {
		return
	}

	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 checkErr(err) {
		return
	}
	err = client.SetCurveServerkey(server_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurvePublickey(garbage_key)
	if checkErr(err) {
		return
	}
	err = client.SetCurveSecretkey(client_secret)
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}
	err = client.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	bounce(server, client, true)
	client.SetLinger(0)
	err = client.Close()
	if checkErr(err) {
		return
	}

	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 checkErr(err) {
		return
	}
	err = client.SetCurveServerkey(server_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurvePublickey(client_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurveSecretkey(garbage_key)
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}
	err = client.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	bounce(server, client, true)
	client.SetLinger(0)
	err = client.Close()
	if checkErr(err) {
		return
	}

	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 checkErr(err) {
		return
	}
	err = client.SetCurveServerkey(server_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurvePublickey(bogus_public)
	if checkErr(err) {
		return
	}
	err = client.SetCurveSecretkey(bogus_secret)
	if checkErr(err) {
		return
	}
	err = client.Connect("tcp://127.0.0.1:9998")
	if checkErr(err) {
		return
	}
	err = client.SetRcvtimeo(time.Second)
	if checkErr(err) {
		return
	}
	bounce(server, client, true)
	client.SetLinger(0)
	err = client.Close()
	if checkErr(err) {
		return
	}

	//  Shutdown
	err = server.Close()
	checkErr(err)

	fmt.Println("Done")
	// Output:
	// 5 error
	// 5 error
	// 5 error
	// 5 error
	// Done
	// Handler closed
	// Reactor finished
}