Examples with Ctx zmq.Ctx used on opensource projects

Example 1 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class AbstractProtocolVersion method assertProtocolVersion.

protected byte[] assertProtocolVersion(int version, List<ByteBuffer> raws, String payload) throws IOException, InterruptedException {
    String host = "tcp://localhost:*";
    Ctx ctx = ZMQ.init(1);
    assertThat(ctx, notNullValue());
    SocketBase receiver = ZMQ.socket(ctx, ZMQ.ZMQ_PULL);
    assertThat(receiver, notNullValue());
    boolean rc = ZMQ.setSocketOption(receiver, ZMQ.ZMQ_LINGER, 0);
    assertThat(rc, is(true));
    rc = ZMQ.monitorSocket(receiver, "inproc://monitor", ZMQ.ZMQ_EVENT_HANDSHAKE_PROTOCOL);
    assertThat(rc, is(true));
    SocketMonitor monitor = new SocketMonitor(ctx, "inproc://monitor");
    monitor.start();
    rc = ZMQ.bind(receiver, host);
    assertThat(rc, is(true));
    String ep = (String) ZMQ.getSocketOptionExt(receiver, ZMQ.ZMQ_LAST_ENDPOINT);
    int port = TestUtils.port(ep);
    Socket sender = new Socket("127.0.0.1", port);
    OutputStream out = sender.getOutputStream();
    for (ByteBuffer raw : raws) {
        out.write(raw.array());
    }
    Msg msg = ZMQ.recv(receiver, 0);
    assertThat(msg, notNullValue());
    assertThat(new String(msg.data(), ZMQ.CHARSET), is(payload));
    monitor.join();
    final Event event = monitor.events[0];
    assertThat(event, notNullValue());
    assertThat(event.event, is(ZMQ.ZMQ_EVENT_HANDSHAKE_PROTOCOL));
    assertThat((Integer) event.arg, is(version));
    InputStream in = sender.getInputStream();
    byte[] data = new byte[255];
    int read = in.read(data);
    sender.close();
    ZMQ.close(receiver);
    ZMQ.term(ctx);
    return Arrays.copyOf(data, read);
}

Example 2 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class LocalThr method main.

public static void main(String[] argv) {
    String bindTo;
    long messageCount;
    int messageSize;
    Ctx ctx;
    SocketBase s;
    boolean rc;
    long i;
    Msg msg;
    long watch;
    long elapsed;
    long throughput;
    double megabits;
    if (argv.length != 3) {
        printf("usage: local_thr <bind-to> <message-size> <message-count>\n");
        return;
    }
    bindTo = argv[0];
    messageSize = atoi(argv[1]);
    messageCount = atol(argv[2]);
    ctx = ZMQ.init(1);
    if (ctx == null) {
        printf("error in init");
        return;
    }
    s = ZMQ.socket(ctx, ZMQ.ZMQ_PULL);
    if (s == null) {
        printf("error in socket");
    }
    // Add your socket options here.
    // For example ZMQ_RATE, ZMQ_RECOVERY_IVL and ZMQ_MCAST_LOOP for PGM.
    rc = ZMQ.bind(s, bindTo);
    if (!rc) {
        printf("error in bind: %s\n");
        return;
    }
    msg = ZMQ.recvMsg(s, 0);
    if (msg == null) {
        printf("error in recvmsg: %s\n");
        return;
    }
    watch = ZMQ.startStopwatch();
    for (i = 0; i != messageCount - 1; i++) {
        msg = ZMQ.recvMsg(s, 0);
        if (msg == null) {
            printf("error in recvmsg: %s\n");
            return;
        }
        if (ZMQ.msgSize(msg) != messageSize) {
            printf("message of incorrect size received " + ZMQ.msgSize(msg));
            return;
        }
    }
    elapsed = ZMQ.stopStopwatch(watch);
    if (elapsed == 0) {
        elapsed = 1;
    }
    throughput = (long) ((double) messageCount / (double) elapsed * 1000000L);
    megabits = (double) (throughput * messageSize * 8) / 1000000;
    printf("message elapsed: %.3f \n", (double) elapsed / 1000000L);
    printf("message size: %d [B]\n", (int) messageSize);
    printf("message count: %d\n", (int) messageCount);
    printf("mean throughput: %d [msg/s]\n", (int) throughput);
    printf("mean throughput: %.3f [Mb/s]\n", (double) megabits);
    ZMQ.close(s);
    ZMQ.term(ctx);
}

Example 3 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class DealerSpecTest method testSpecDestroyQueueOnDisconnect.

@Test
@Ignore
public void testSpecDestroyQueueOnDisconnect() throws IOException, InterruptedException {
    Ctx ctx = ZMQ.createContext();
    List<String> binds = Arrays.asList("inproc://a", "tcp://127.0.0.1:*");
    for (String bindAddress : binds) {
    // SHALL create a double queue when a peer connects to it. If this peer
    // disconnects, the DEALER socket SHALL destroy its double queue and SHALL
    // discard any messages it contains.
    // *** Test disabled until libzmq does this properly ***
    // test_destroy_queue_on_disconnect (ctx);
    }
    ZMQ.term(ctx);
}

Example 4 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class DealerSpecTest method testSpecRoundRobinOut.

@Test
public void testSpecRoundRobinOut() throws IOException, InterruptedException {
    Ctx ctx = ZMQ.createContext();
    List<String> binds = Arrays.asList("inproc://a", "tcp://127.0.0.1:*");
    for (String bindAddress : binds) {
        // SHALL route outgoing messages to available peers using a round-robin
        // strategy.
        roundRobinOut(ctx, bindAddress, ZMQ.ZMQ_DEALER, ZMQ.ZMQ_REP);
    }
    ZMQ.term(ctx);
}

Example 5 with Ctx

use of zmq.Ctx in project jeromq by zeromq.

the class DealerSpecTest method testSpecBlockOnSendNoPeers.

@Test
public void testSpecBlockOnSendNoPeers() throws IOException, InterruptedException {
    Ctx ctx = ZMQ.createContext();
    List<String> binds = Arrays.asList("inproc://a", "tcp://127.0.0.1:*");
    for (String bindAddress : binds) {
        // SHALL block on sending, or return a suitable error, when it has no connected peers.
        blockOnSendNoPeers(ctx, bindAddress, ZMQ.ZMQ_DEALER);
    }
    ZMQ.term(ctx);
}