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

Example 31 with ZMsg

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

the class flclient1 method main.

//  .split client task
//  The client uses a Lazy Pirate strategy if it only has one server to talk
//  to. If it has two or more servers to talk to, it will try each server just
//  once:
public static void main(String[] argv) {
    ZContext ctx = new ZContext();
    ZMsg request = new ZMsg();
    request.add("Hello world");
    ZMsg reply = null;
    int endpoints = argv.length;
    if (endpoints == 0)
        System.out.printf("I: syntax: flclient1 <endpoint> ...\n");
    else if (endpoints == 1) {
        //  For one endpoint, we retry N times
        int retries;
        for (retries = 0; retries < MAX_RETRIES; retries++) {
            String endpoint = argv[0];
            reply = tryRequest(ctx, endpoint, request);
            if (reply != null)
                //  Successful
                break;
            System.out.printf("W: no response from %s, retrying...\n", endpoint);
        }
    } else {
        //  For multiple endpoints, try each at most once
        int endpointNbr;
        for (endpointNbr = 0; endpointNbr < endpoints; endpointNbr++) {
            String endpoint = argv[endpointNbr];
            reply = tryRequest(ctx, endpoint, request);
            if (reply != null)
                //  Successful
                break;
            System.out.printf("W: no response from %s\n", endpoint);
        }
    }
    if (reply != null) {
        System.out.printf("Service is running OK\n");
        reply.destroy();
    }
    request.destroy();
    ;
    ctx.destroy();
}

Example 32 with ZMsg

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

the class flclient1 method tryRequest.

private static ZMsg tryRequest(ZContext ctx, String endpoint, ZMsg request) {
    System.out.printf("I: trying echo service at %s...\n", endpoint);
    Socket client = ctx.createSocket(ZMQ.REQ);
    client.connect(endpoint);
    //  Send request, wait safely for reply
    ZMsg msg = request.duplicate();
    msg.send(client);
    Poller poller = ctx.createPoller(1);
    poller.register(client, Poller.POLLIN);
    poller.poll(REQUEST_TIMEOUT);
    ZMsg reply = null;
    if (poller.pollin(0))
        reply = ZMsg.recvMsg(client);
    //  Close socket in any case, we're done with it now
    ctx.destroySocket(client);
    return reply;
}

Example 33 with ZMsg

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

the class flclient2 method main.

public static void main(String[] argv) {
    if (argv.length == 0) {
        System.out.printf("I: syntax: flclient2 <endpoint> ...\n");
        System.exit(0);
    }
    //  Create new freelance client object
    flclient2 client = new flclient2();
    //  Connect to each endpoint
    int argn;
    for (argn = 0; argn < argv.length; argn++) client.connect(argv[argn]);
    //  Send a bunch of name resolution 'requests', measure time
    int requests = 10000;
    long start = System.currentTimeMillis();
    while (requests-- > 0) {
        ZMsg request = new ZMsg();
        request.add("random name");
        ZMsg reply = client.request(request);
        if (reply == null) {
            System.out.printf("E: name service not available, aborting\n");
            break;
        }
        reply.destroy();
    }
    System.out.printf("Average round trip cost: %d usec\n", (int) (System.currentTimeMillis() - start) / 10);
    client.destroy();
}

Example 34 with ZMsg

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

the class flclient3 method main.

public static void main(String[] argv) {
    //  Create new freelance client object
    flcliapi client = new flcliapi();
    //  Connect to several endpoints
    client.connect("tcp://localhost:5555");
    client.connect("tcp://localhost:5556");
    client.connect("tcp://localhost:5557");
    //  Send a bunch of name resolution 'requests', measure time
    int requests = 10000;
    long start = System.currentTimeMillis();
    while (requests-- > 0) {
        ZMsg request = new ZMsg();
        request.add("random name");
        ZMsg reply = client.request(request);
        if (reply == null) {
            System.out.printf("E: name service not available, aborting\n");
            break;
        }
        reply.destroy();
    }
    System.out.printf("Average round trip cost: %d usec\n", (int) (System.currentTimeMillis() - start) / 10);
    client.destroy();
}

Example 35 with ZMsg

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

the class flserver1 method main.

public static void main(String[] args) {
    if (args.length < 1) {
        System.out.printf("I: syntax: flserver1 <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 msg = ZMsg.recvMsg(server);
        if (msg == null)
            //  Interrupted
            break;
        msg.send(server);
    }
    if (Thread.currentThread().isInterrupted())
        System.out.printf("W: interrupted\n");
    ctx.destroy();
}