Examples with ZContext org.zeromq.ZContext used on opensource projects

Example 26 with ZContext

use of org.zeromq.ZContext in project jeromq by zeromq.

the class suisnail method main.

//  .split main task
//  The main task simply starts a client and a server, and then
//  waits for the client to signal that it has died:
public static void main(String[] args) throws Exception {
    ZContext ctx = new ZContext();
    Socket pubpipe = ZThread.fork(ctx, new Publisher());
    Socket subpipe = ZThread.fork(ctx, new Subscriber());
    subpipe.recvStr();
    pubpipe.send("break");
    Thread.sleep(100);
    ctx.destroy();
}

Example 27 with ZContext

use of org.zeromq.ZContext in project jeromq by zeromq.

the class flserver2 method main.

public static void main(String[] args) {
    if (args.length < 1) {
        System.out.printf("I: syntax: flserver2 <endpoint>\n");
        System.exit(0);
    }
    ZContext ctx = new ZContext();
    Socket server = ctx.createSocket(ZMQ.REP);
    server.bind(args[0]);
    System.out.printf("I: echo service is ready at %s\n", args[0]);
    while (true) {
        ZMsg request = ZMsg.recvMsg(server);
        if (request == null)
            //  Interrupted
            break;
        //  Fail nastily if run against wrong client
        assert (request.size() == 2);
        ZFrame identity = request.pop();
        request.destroy();
        ZMsg reply = new ZMsg();
        reply.add(identity);
        reply.add("OK");
        reply.send(server);
    }
    if (Thread.currentThread().isInterrupted())
        System.out.printf("W: interrupted\n");
    ctx.destroy();
}

Example 28 with ZContext

use of org.zeromq.ZContext in project jeromq by zeromq.

the class flserver3 method main.

public static void main(String[] args) {
    boolean verbose = (args.length > 0 && args[0].equals("-v"));
    ZContext ctx = new ZContext();
    //  Prepare server socket with predictable identity
    String bindEndpoint = "tcp://*:5555";
    String connectEndpoint = "tcp://localhost:5555";
    Socket server = ctx.createSocket(ZMQ.ROUTER);
    server.setIdentity(connectEndpoint.getBytes(ZMQ.CHARSET));
    server.bind(bindEndpoint);
    System.out.printf("I: service is ready at %s\n", bindEndpoint);
    while (!Thread.currentThread().isInterrupted()) {
        ZMsg request = ZMsg.recvMsg(server);
        if (verbose && request != null)
            request.dump(System.out);
        if (request == null)
            //  Interrupted
            break;
        //  Frame 0: identity of client
        //  Frame 1: PING, or client control frame
        //  Frame 2: request body
        ZFrame identity = request.pop();
        ZFrame control = request.pop();
        ZMsg reply = new ZMsg();
        if (control.equals(new ZFrame("PING")))
            reply.add("PONG");
        else {
            reply.add(control);
            reply.add("OK");
        }
        request.destroy();
        reply.push(identity);
        if (verbose && reply != null)
            reply.dump(System.out);
        reply.send(server);
    }
    if (Thread.currentThread().isInterrupted())
        System.out.printf("W: interrupted\n");
    ctx.destroy();
}

Example 29 with ZContext

use of org.zeromq.ZContext in project jeromq by zeromq.

the class lbbroker3 method main.

/**
     * And the main task now sets-up child tasks, then starts its reactor.
     * If you press Ctrl-C, the reactor exits and the main task shuts down.
     */
public static void main(String[] args) {
    ZContext context = new ZContext();
    LBBroker arg = new LBBroker();
    //  Prepare our context and sockets
    arg.frontend = context.createSocket(ZMQ.ROUTER);
    arg.backend = context.createSocket(ZMQ.ROUTER);
    arg.frontend.bind("ipc://frontend.ipc");
    arg.backend.bind("ipc://backend.ipc");
    int clientNbr;
    for (clientNbr = 0; clientNbr < NBR_CLIENTS; clientNbr++) ZThread.start(new ClientTask());
    for (int workerNbr = 0; workerNbr < NBR_WORKERS; workerNbr++) ZThread.start(new WorkerTask());
    //  Queue of available workers
    arg.workers = new LinkedList<ZFrame>();
    //  Prepare reactor and fire it up
    ZLoop reactor = new ZLoop(context);
    PollItem item = new PollItem(arg.backend, ZMQ.Poller.POLLIN);
    reactor.addPoller(item, backendHandler, arg);
    reactor.start();
    context.destroy();
}

Example 30 with ZContext

use of org.zeromq.ZContext in project jeromq by zeromq.

the class pathopub method main.

public static void main(String[] args) throws Exception {
    ZContext context = new ZContext();
    Socket publisher = context.createSocket(ZMQ.PUB);
    if (args.length == 1)
        publisher.connect(args[0]);
    else
        publisher.bind("tcp://*:5556");
    //  Ensure subscriber connection has time to complete
    Thread.sleep(1000);
    //  Send out all 1,000 topic messages
    int topicNbr;
    for (topicNbr = 0; topicNbr < 1000; topicNbr++) {
        publisher.send(String.format("%03d", topicNbr), ZMQ.SNDMORE);
        publisher.send("Save Roger");
    }
    //  Send one random update per second
    Random rand = new Random(System.currentTimeMillis());
    while (!Thread.currentThread().isInterrupted()) {
        Thread.sleep(1000);
        publisher.send(String.format("%03d", rand.nextInt(1000)), ZMQ.SNDMORE);
        publisher.send("Off with his head!");
    }
    context.destroy();
}