Examples with Ctx zmq.Ctx used on opensource projects

Example 41 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class TestReqrepDevice method testReprepDevice.

// Create REQ/ROUTER wiring.
@Test
public void testReprepDevice() throws IOException {
    int routerPort = Utils.findOpenPort();
    int dealerPort = Utils.findOpenPort();
    boolean brc;
    Ctx ctx = ZMQ.init(1);
    assertThat(ctx, notNullValue());
    // Create a req/rep device.
    SocketBase dealer = ZMQ.socket(ctx, ZMQ.ZMQ_DEALER);
    assertThat(dealer, notNullValue());
    brc = ZMQ.bind(dealer, "tcp://127.0.0.1:" + dealerPort);
    assertThat(brc, is(true));
    SocketBase router = ZMQ.socket(ctx, ZMQ.ZMQ_ROUTER);
    assertThat(router, notNullValue());
    brc = ZMQ.bind(router, "tcp://127.0.0.1:" + routerPort);
    assertThat(brc, is(true));
    // Create a worker.
    SocketBase rep = ZMQ.socket(ctx, ZMQ.ZMQ_REP);
    assertThat(rep, notNullValue());
    brc = ZMQ.connect(rep, "tcp://127.0.0.1:" + dealerPort);
    assertThat(brc, is(true));
    SocketBase req = ZMQ.socket(ctx, ZMQ.ZMQ_REQ);
    assertThat(req, notNullValue());
    brc = ZMQ.connect(req, "tcp://127.0.0.1:" + routerPort);
    assertThat(brc, is(true));
    // Send a request.
    int rc;
    Msg msg;
    String buff;
    long rcvmore;
    rc = ZMQ.send(req, "ABC", ZMQ.ZMQ_SNDMORE);
    assertThat(rc, is(3));
    rc = ZMQ.send(req, "DEFG", 0);
    assertThat(rc, is(4));
    // Pass the request through the device.
    for (int i = 0; i != 4; i++) {
        msg = ZMQ.recvMsg(router, 0);
        assertThat(msg, notNullValue());
        rcvmore = ZMQ.getSocketOption(router, ZMQ.ZMQ_RCVMORE);
        rc = ZMQ.sendMsg(dealer, msg, rcvmore > 0 ? ZMQ.ZMQ_SNDMORE : 0);
        assertThat(rc >= 0, is(true));
    }
    // Receive the request.
    msg = ZMQ.recv(rep, 0);
    assertThat(msg.size(), is(3));
    buff = new String(msg.data(), ZMQ.CHARSET);
    assertThat(buff, is("ABC"));
    rcvmore = ZMQ.getSocketOption(rep, ZMQ.ZMQ_RCVMORE);
    assertThat(rcvmore > 0, is(true));
    msg = ZMQ.recv(rep, 0);
    assertThat(msg.size(), is(4));
    buff = new String(msg.data(), ZMQ.CHARSET);
    assertThat(buff, is("DEFG"));
    rcvmore = ZMQ.getSocketOption(rep, ZMQ.ZMQ_RCVMORE);
    assertThat(rcvmore, is(0L));
    // Send the reply.
    rc = ZMQ.send(rep, "GHIJKL", ZMQ.ZMQ_SNDMORE);
    assertThat(rc, is(6));
    rc = ZMQ.send(rep, "MN", 0);
    assertThat(rc, is(2));
    // Pass the reply through the device.
    for (int i = 0; i != 4; i++) {
        msg = ZMQ.recvMsg(dealer, 0);
        assertThat(msg, notNullValue());
        rcvmore = ZMQ.getSocketOption(dealer, ZMQ.ZMQ_RCVMORE);
        rc = ZMQ.sendMsg(router, msg, rcvmore > 0 ? ZMQ.ZMQ_SNDMORE : 0);
        assertThat(rc >= 0, is(true));
    }
    // Receive the reply.
    msg = ZMQ.recv(req, 0);
    assertThat(msg.size(), is(6));
    buff = new String(msg.data(), ZMQ.CHARSET);
    assertThat(buff, is("GHIJKL"));
    rcvmore = ZMQ.getSocketOption(req, ZMQ.ZMQ_RCVMORE);
    assertThat(rcvmore > 0, is(true));
    msg = ZMQ.recv(req, 0);
    assertThat(msg.size(), is(2));
    buff = new String(msg.data(), ZMQ.CHARSET);
    assertThat(buff, is("MN"));
    rcvmore = ZMQ.getSocketOption(req, ZMQ.ZMQ_RCVMORE);
    assertThat(rcvmore, is(0L));
    // Clean up.
    ZMQ.close(req);
    ZMQ.close(rep);
    ZMQ.close(router);
    ZMQ.close(dealer);
    ZMQ.term(ctx);
}

Example 42 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class StreamTest method testStream2stream.

@Test
public void testStream2stream() throws IOException, InterruptedException {
    String host = "tcp://localhost:*";
    Ctx ctx = ZMQ.init(1);
    assertThat(ctx, notNullValue());
    // Set up listener STREAM.
    SocketBase bind = ZMQ.socket(ctx, ZMQ.ZMQ_STREAM);
    assertThat(bind, notNullValue());
    boolean rc = ZMQ.bind(bind, host);
    assertThat(rc, is(true));
    host = (String) ZMQ.getSocketOptionExt(bind, ZMQ.ZMQ_LAST_ENDPOINT);
    assertThat(host, notNullValue());
    // Set up connection stream.
    SocketBase connect = ZMQ.socket(ctx, ZMQ.ZMQ_STREAM);
    assertThat(connect, notNullValue());
    // Do the connection.
    rc = ZMQ.connect(connect, host);
    assertThat(rc, is(true));
    ZMQ.sleep(1);
    // Connecting sends a zero message
    // Server: First frame is identity, second frame is zero
    Msg msg = ZMQ.recv(bind, 0);
    assertThat(msg, notNullValue());
    assertThat(msg.size() > 0, is(true));
    msg = ZMQ.recv(bind, 0);
    assertThat(msg, notNullValue());
    assertThat(msg.size(), is(0));
    ZMQ.close(bind);
    ZMQ.close(connect);
    ZMQ.term(ctx);
}

Example 43 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class XpubXsubTest method testXPubSub.

@Test(timeout = 5000)
public void testXPubSub() {
    System.out.println("XPub - Sub");
    final Ctx ctx = zmq.ZMQ.createContext();
    assertThat(ctx, notNullValue());
    boolean rc;
    SocketBase sub = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_SUB);
    rc = zmq.ZMQ.setSocketOption(sub, zmq.ZMQ.ZMQ_SUBSCRIBE, "topic");
    assertThat(rc, is(true));
    rc = zmq.ZMQ.setSocketOption(sub, zmq.ZMQ.ZMQ_SUBSCRIBE, "topix");
    assertThat(rc, is(true));
    SocketBase pub = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_XPUB);
    rc = zmq.ZMQ.bind(pub, "inproc://1");
    assertThat(rc, is(true));
    String endpoint = (String) ZMQ.getSocketOptionExt(pub, ZMQ.ZMQ_LAST_ENDPOINT);
    assertThat(endpoint, notNullValue());
    rc = zmq.ZMQ.connect(sub, endpoint);
    assertThat(rc, is(true));
    System.out.print("Send.");
    rc = pub.send(new Msg("topic".getBytes(ZMQ.CHARSET)), ZMQ.ZMQ_SNDMORE);
    assertThat(rc, is(true));
    rc = pub.send(new Msg("hop".getBytes(ZMQ.CHARSET)), 0);
    assertThat(rc, is(true));
    System.out.print("Recv.");
    Msg msg = sub.recv(0);
    assertThat(msg, notNullValue());
    assertThat(msg.size(), is(5));
    msg = sub.recv(0);
    assertThat(msg, notNullValue());
    assertThat(msg.size(), is(3));
    rc = zmq.ZMQ.setSocketOption(sub, zmq.ZMQ.ZMQ_UNSUBSCRIBE, "topix");
    assertThat(rc, is(true));
    rc = pub.send(new Msg("topix".getBytes(ZMQ.CHARSET)), ZMQ.ZMQ_SNDMORE);
    assertThat(rc, is(true));
    rc = pub.send(new Msg("hop".getBytes(ZMQ.CHARSET)), 0);
    assertThat(rc, is(true));
    rc = zmq.ZMQ.setSocketOption(sub, zmq.ZMQ.ZMQ_RCVTIMEO, 500);
    assertThat(rc, is(true));
    msg = sub.recv(0);
    assertThat(msg, nullValue());
    System.out.print("End.");
    zmq.ZMQ.close(sub);
    for (int idx = 0; idx < 2; ++idx) {
        rc = pub.send(new Msg("topic abc".getBytes(ZMQ.CHARSET)), 0);
        assertThat(rc, is(true));
        ZMQ.msleep(10);
    }
    zmq.ZMQ.close(pub);
    zmq.ZMQ.term(ctx);
    System.out.println("Done.");
}

Example 44 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class XpubXsubTest method testIssue476.

@Test(timeout = 5000)
public void testIssue476() throws InterruptedException, ExecutionException {
    System.out.println("Issue 476");
    final Ctx ctx = zmq.ZMQ.createContext();
    assertThat(ctx, notNullValue());
    boolean rc;
    final SocketBase proxyPub = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_XPUB);
    rc = proxyPub.bind("inproc://1");
    assertThat(rc, is(true));
    final SocketBase proxySub = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_XSUB);
    rc = proxySub.bind("inproc://2");
    assertThat(rc, is(true));
    final SocketBase ctrl = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_PAIR);
    rc = ctrl.bind("inproc://ctrl-proxy");
    assertThat(rc, is(true));
    ExecutorService service = Executors.newFixedThreadPool(1);
    Future<?> proxy = service.submit(() -> {
        ZMQ.proxy(proxySub, proxyPub, null, ctrl);
    });
    SocketBase sub = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_SUB);
    rc = zmq.ZMQ.setSocketOption(sub, zmq.ZMQ.ZMQ_SUBSCRIBE, "topic");
    assertThat(rc, is(true));
    rc = zmq.ZMQ.connect(sub, "inproc://1");
    assertThat(rc, is(true));
    SocketBase pub = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_XPUB);
    rc = zmq.ZMQ.connect(pub, "inproc://2");
    assertThat(rc, is(true));
    rc = zmq.ZMQ.setSocketOption(sub, ZMQ.ZMQ_RCVTIMEO, 100);
    assertThat(rc, is(true));
    sub.recv(0);
    System.out.print("Send.");
    rc = pub.send(new Msg("topic".getBytes(ZMQ.CHARSET)), ZMQ.ZMQ_SNDMORE);
    assertThat(rc, is(true));
    rc = pub.send(new Msg("hop".getBytes(ZMQ.CHARSET)), 0);
    assertThat(rc, is(true));
    System.out.print("Recv.");
    Msg msg = sub.recv(0);
    assertThat(msg, notNullValue());
    assertThat(msg.size(), is(5));
    msg = sub.recv(0);
    assertThat(msg, notNullValue());
    assertThat(msg.size(), is(3));
    System.out.print("End.");
    zmq.ZMQ.close(sub);
    for (int idx = 0; idx < 2; ++idx) {
        rc = pub.send(new Msg("topic abc".getBytes(ZMQ.CHARSET)), 0);
        assertThat(rc, is(true));
        ZMQ.msleep(10);
    }
    zmq.ZMQ.close(pub);
    final SocketBase command = zmq.ZMQ.socket(ctx, zmq.ZMQ.ZMQ_PAIR);
    rc = command.connect("inproc://ctrl-proxy");
    assertThat(rc, is(true));
    command.send(new Msg(ZMQ.PROXY_TERMINATE), 0);
    proxy.get();
    zmq.ZMQ.close(command);
    zmq.ZMQ.close(proxyPub);
    zmq.ZMQ.close(proxySub);
    zmq.ZMQ.close(ctrl);
    zmq.ZMQ.term(ctx);
    System.out.println("Done.");
}

Example 45 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class ProxyTerminateTest method testProxyTerminate.

@Test(timeout = 5000)
public void testProxyTerminate() throws IOException, InterruptedException, ExecutionException {
    int port = Utils.findOpenPort();
    String frontend = "tcp://127.0.0.1:" + port;
    port = Utils.findOpenPort();
    String backend = "tcp://127.0.0.1:" + port;
    // The main thread simply starts a basic steerable proxy server, publishes some messages, and then
    // waits for the server to terminate.
    Ctx ctx = ZMQ.createContext();
    // Control socket receives terminate command from main over inproc
    SocketBase control = ZMQ.socket(ctx, ZMQ.ZMQ_PUB);
    boolean rc = ZMQ.bind(control, "inproc://control");
    assertThat(rc, is(true));
    CompletableFuture<Boolean> resultHander = new CompletableFuture<>();
    Thread thread = new Thread(new ServerTask(ctx, frontend, backend, resultHander));
    thread.setUncaughtExceptionHandler(new UncaughtExceptionHandler() {

        @Override
        public void uncaughtException(Thread t, Throwable e) {
            resultHander.completeExceptionally(e);
        }
    });
    thread.start();
    Thread.sleep(500);
    // Start a secondary publisher which writes data to the SUB-PUSH server socket
    SocketBase publisher = ZMQ.socket(ctx, ZMQ.ZMQ_PUB);
    assertThat(publisher, notNullValue());
    rc = ZMQ.connect(publisher, frontend);
    assertThat(rc, is(true));
    Thread.sleep(50);
    int ret = ZMQ.send(publisher, "This is a test", 0);
    assertThat(ret, is(14));
    Thread.sleep(50);
    ret = ZMQ.send(publisher, "This is a test", 0);
    assertThat(ret, is(14));
    Thread.sleep(50);
    ret = ZMQ.send(publisher, "This is a test", 0);
    assertThat(ret, is(14));
    ret = ZMQ.send(control, ZMQ.PROXY_TERMINATE, 0);
    assertThat(ret, is(9));
    ZMQ.close(publisher);
    ZMQ.close(control);
    resultHander.get();
    ZMQ.term(ctx);
}