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

Example 31 with ZContext

use of org.zeromq.ZContext 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 ZContext

use of org.zeromq.ZContext 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();
}

Example 33 with ZContext

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

the class lruqueue3 method run.

public void run() {
    ZContext context = new ZContext();
    //  Prepare our context and sockets
    Socket worker = context.createSocket(ZMQ.REQ);
    worker.connect("ipc://backend.ipc");
    ZFrame frame = new ZFrame(lruqueue3.LRU_READY);
    //  Tell backend we're ready for work
    frame.send(worker, 0);
    while (true) {
        ZMsg msg = ZMsg.recvMsg(worker);
        if (msg == null)
            break;
        msg.getLast().reset("OK".getBytes(ZMQ.CHARSET));
        msg.send(worker);
        System.out.println(Thread.currentThread().getName() + " Worker Sent OK");
    }
    context.destroy();
}