Golang Socket.Dial方法代码示例

func NewSubscriber(ctx context.Context, url string) (*Subscriber, error) {
	var sock mangos.Socket
	var err error

	sock, err = sub.NewSocket()
	if err != nil {
		return nil, err
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())

	err = sock.Dial(url)
	if err != nil {
		return nil, err
	}
	// subscribes to everything
	err = sock.SetOption(mangos.OptionSubscribe, []byte(""))
	if err != nil {
		return nil, err
	}

	subscriber := &Subscriber{
		url:     url,
		ctx:     ctx,
		sock:    sock,
		changes: make(chan []string, 8),
	}

	go subscriber.run()
	return subscriber, nil
}

func client(url string, name string) {
	var sock mangos.Socket
	var err error
	var msg []byte

	if sock, err = sub.NewSocket(); err != nil {
		die("can't get new sub socket: %s", err.Error())
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Dial(url); err != nil {
		die("can't dial on sub socket: %s", err.Error())
	}
	// Empty byte array effectively subscribes to everything
	err = sock.SetOption(mangos.OptionSubscribe, []byte(""))
	if err != nil {
		die("cannot subscribe: %s", err.Error())
	}
	for {
		if msg, err = sock.Recv(); err != nil {
			die("Cannot recv: %s", err.Error())
		}
		fmt.Printf("CLIENT(%s): RECEIVED %s\n", name, string(msg))
	}
}

func StartNanomsgJsonTest(address string, clients int, requestsPerClient int, messageSize int, timer metrics.Timer, requestSize *int) func(wg *sync.WaitGroup) {
	return func(wg *sync.WaitGroup) {
		var socket mangos.Socket
		var err error

		if socket, err = req.NewSocket(); err != nil {
			log.Fatal(err)
		}

		defer socket.Close()
		defer wg.Done()

		socket.AddTransport(tcp.NewTransport())

		if err = socket.Dial("tcp://" + address); err != nil {
			log.Fatal(err)
		}

		request, _ := json.Marshal(Request{Method: "TEST", Payload: strings.Repeat("a", messageSize)})
		*requestSize = len(request)

		for i := 0; i < requestsPerClient; i++ {
			timer.Time(func() {
				if err = socket.Send(request); err != nil {
					log.Fatal(err)
				}

				socket.Recv()
			})
		}
	}
}

func client(url string, name string) {
	var sock mangos.Socket
	var err error
	var msg []byte

	if sock, err = respondent.NewSocket(); err != nil {
		die("can't get new respondent socket: %s", err.Error())
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Dial(url); err != nil {
		die("can't dial on respondent socket: %s", err.Error())
	}
	for {
		if msg, err = sock.Recv(); err != nil {
			die("Cannot recv: %s", err.Error())
		}
		fmt.Printf("CLIENT(%s): RECEIVED \"%s\" SURVEY REQUEST\n",
			name, string(msg))

		d := date()
		fmt.Printf("CLIENT(%s): SENDING DATE SURVEY RESPONSE\n", name)
		if err = sock.Send([]byte(d)); err != nil {
			die("Cannot send: %s", err.Error())
		}
	}
}

func main() {
	flag.Parse()

	var sock mangos.Socket
	var err error
	if sock, err = pub.NewSocket(); err != nil {
		die("can't get new pub socket: %s", err)
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Listen("tcp://127.0.0.1:55555"); err != nil {
		die("can't listen on pub socket: %s", err.Error())
	}

	//sub
	var subscriber mangos.Socket

	if subscriber, err = sub.NewSocket(); err != nil {
		die("can't get new sub socket: %s", err.Error())
	}
	subscriber.AddTransport(ipc.NewTransport())
	subscriber.AddTransport(tcp.NewTransport())
	if err = subscriber.Dial("tcp://127.0.0.1:55555"); err != nil {
		die("can't dial on sub socket: %s", err.Error())
	}
	// Empty byte array effectively subscribes to everything
	err = subscriber.SetOption(mangos.OptionSubscribe, []byte(""))

	start := time.Now()

	//var msg []byte
	for i := 1; i <= *numbPtr; i++ {
		//conn.Publish("test", []byte(randSeq(320)))
		sock.Send([]byte(randSeq(320)))

		if _, err = subscriber.Recv(); err != nil {
			die("Cannot recv: %s", err.Error())
		}

		//log.Println(string(msg))
		/*
			runtime.Gosched()
			atomic.AddUint64(&ops, 1)
			if ops == uint64(*numbPtr) {
				elapsed := time.Since(start)
				log.Printf("Time took %s", elapsed)
			}
		*/
	}

	elapsed := time.Since(start)
	log.Printf("Time took %s", elapsed)

	defer sock.Close()

	fmt.Scanln()
}

func startNode(masterHost, name string) {
	var sock mangos.Socket
	var err error
	var msg []byte
	masterUrl := url.URL{Scheme: "tcp", Host: masterHost}
	ip := getPrivateIP()

	// Try to get new "respondent" socket
	if sock, err = respondent.NewSocket(); err != nil {
		utils.Die("Can't get new respondent socket: %s", err.Error())
	}
	defer sock.Close()

	sock.AddTransport(tcp.NewTransport())

	// Connect to master
	if err = sock.Dial(masterUrl.String()); err != nil {
		utils.Die("Can't dial on respondent socket: %s", err.Error())
	}

	// Wait for a survey request and send responses
	for {
		if msg, err = sock.Recv(); err != nil {
			utils.Die("Cannot recv: %s", err.Error())
		}
		fmt.Printf("Client(%s): Received \"%s\" survey request\n", name, string(msg))

		var loadAvg *load.LoadAvgStat
		if loadAvg, err = load.LoadAvg(); err != nil {
			utils.Die("Cannot get load average: %s", err.Error())
		}

		var cpuInfo []cpu.CPUInfoStat
		if cpuInfo, err = cpu.CPUInfo(); err != nil {
			utils.Die("Cannot get CPU info: %s", err.Error())
		}
		fmt.Printf("CPU INFO len: %d\n", len(cpuInfo))

		// Get the normalized CPU load
		avg := loadAvg.Load1
		cores := int32(0)
		for _, info := range cpuInfo {
			fmt.Printf("Inner Cores: %d\n", info.Cores)
			cores += info.Cores
		}
		fmt.Printf("Load avg: %f\n", avg)
		fmt.Printf("Cores: %d\n", cores)
		avg = avg / float64(cores)

		fmt.Printf("Client(%s): Sending survey response\n", name)
		if err = sock.Send([]byte(fmt.Sprintf("%s,%f", ip, avg))); err != nil {
			utils.Die("Cannot send: %s", err.Error())
		}
	}
}

func node1(url string) {
	var sock mangos.Socket
	var err error

	if sock, err = pair.NewSocket(); err != nil {
		die("can't get new pair socket: %s", err.Error())
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Dial(url); err != nil {
		die("can't dial on pair socket: %s", err.Error())
	}
	send_recv(sock, "node1")
}

func node1(url string, msg string) {
	var sock mangos.Socket
	var err error

	if sock, err = push.NewSocket(); err != nil {
		die("can't get new push socket: %s", err.Error())
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Dial(url); err != nil {
		die("can't dial on push socket: %s", err.Error())
	}
	fmt.Printf("NODE1: SENDING \"%s\"\n", msg)
	if err = sock.Send([]byte(msg)); err != nil {
		die("can't send message on push socket: %s", err.Error())
	}
	sock.Close()
}

func ClientWithSub(urlServer string, urlPubSub string, service string) (*DiscoveryClient, error) {
	var sock mangos.Socket
	var err error
	var subscriber *Subscriber

	ctx, cancel := context.WithCancel(context.Background())

	if urlPubSub != "" {
		subCtx, _ := context.WithCancel(ctx)
		subscriber, err = NewSubscriber(subCtx, urlPubSub)
		if err != nil {
			return nil, err
		}
	}

	sock, err = respondent.NewSocket()
	if err != nil {
		return nil, err
	}

	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	err = sock.Dial(urlServer)
	if err != nil {
		return nil, err
	}

	client := &DiscoveryClient{
		urlServer:  urlServer,
		urlPubSub:  urlPubSub,
		service:    service,
		ctx:        ctx,
		cancel:     cancel,
		sock:       sock,
		subscriber: subscriber,
	}

	go client.run()
	return client, nil
}

func node(args []string) {
	var sock mangos.Socket
	var err error
	var msg []byte
	var x int

	if sock, err = bus.NewSocket(); err != nil {
		die("bus.NewSocket: %s", err)
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Listen(args[2]); err != nil {
		die("sock.Listen: %s", err.Error())
	}

	// wait for everyone to start listening
	time.Sleep(time.Second)
	for x = 3; x < len(args); x++ {
		if err = sock.Dial(args[x]); err != nil {
			die("socket.Dial: %s", err.Error())
		}
	}

	// wait for everyone to join
	time.Sleep(time.Second)

	fmt.Printf("%s: SENDING '%s' ONTO BUS\n", args[1], args[1])
	if err = sock.Send([]byte(args[1])); err != nil {
		die("sock.Send: %s", err.Error())
	}
	for {
		if msg, err = sock.Recv(); err != nil {
			die("sock.Recv: %s", err.Error())
		}
		fmt.Printf("%s: RECEIVED \"%s\" FROM BUS\n", args[1],
			string(msg))

	}
}

func clientWorker(url string, id int) {
	var sock mangos.Socket
	var m *mangos.Message
	var err error

	if sock, err = req.NewSocket(); err != nil {
		die("can't get new req socket: %s", err.Error())
	}

	// Leave this in Cooked mode!

	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Dial(url); err != nil {
		die("can't dial on req socket: %s", err.Error())
	}

	// send an empty messsage
	m = mangos.NewMessage(1)
	if err = sock.SendMsg(m); err != nil {
		die("can't send request: %s", err.Error())
	}

	if m, err = sock.RecvMsg(); err != nil {
		die("can't recv reply: %s", err.Error())
	}
	sock.Close()

	if len(m.Body) != 4 {
		die("bad response len: %d", len(m.Body))
	}

	worker := binary.BigEndian.Uint32(m.Body[0:])

	L.Lock()
	fmt.Printf("Client: %4d   Server: %4d\n", id, worker)
	L.Unlock()
}

func node1(url string) {
	var sock mangos.Socket
	var err error
	var msg []byte

	if sock, err = req.NewSocket(); err != nil {
		die("can't get new req socket: %s", err.Error())
	}
	sock.AddTransport(ipc.NewTransport())
	sock.AddTransport(tcp.NewTransport())
	if err = sock.Dial(url); err != nil {
		die("can't dial on req socket: %s", err.Error())
	}
	fmt.Printf("NODE1: SENDING DATE REQUEST %s\n", "DATE")
	if err = sock.Send([]byte("DATE")); err != nil {
		die("can't send message on push socket: %s", err.Error())
	}
	if msg, err = sock.Recv(); err != nil {
		die("can't receive date: %s", err.Error())
	}
	fmt.Printf("NODE1: RECEIVED DATE %s\n", string(msg))
	sock.Close()
}