Examples of javax.websocket.Session

javax.websocket.Session
A Web Socket session represents a conversation between two web socket endpoints. As soon as the websocket handshake completes successfully, the web socket implementation provides the endpoint an active websocket session. The endpoint can then register interest in incoming messages that are part of this newly created conversation by providing a MessageHandler to the session, and can send messages to the other end of the conversation by means of the RemoteEndpoint object obtained from this session. @author dannycoward @since DRAFT 001


        // 5 second timeout
        wsContainer.setDefaultMaxSessionIdleTimeout(5000);
        wsContainer.setProcessPeriod(1);


        Session s1a = connectToEchoServer(wsContainer, EndpointA.class,
                TesterEchoServer.Config.PATH_BASIC);
        s1a.setMaxIdleTimeout(3000);
        Session s2a = connectToEchoServer(wsContainer, EndpointA.class,
                TesterEchoServer.Config.PATH_BASIC);
        s2a.setMaxIdleTimeout(6000);
        Session s3a = connectToEchoServer(wsContainer, EndpointA.class,
                TesterEchoServer.Config.PATH_BASIC);
        s3a.setMaxIdleTimeout(9000);


        // Check all three sessions are open
        Set<Session> setA = s3a.getOpenSessions();


        int expected = 3;
        while (expected > 0) {
            Assert.assertEquals(expected, getOpenCount(setA));

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        ClientEndpointConfig clientEndpointConfig =
                ClientEndpointConfig.Builder.create().build();
        clientEndpointConfig.getUserProperties().put(
                WsWebSocketContainer.SSL_TRUSTSTORE_PROPERTY,
                "test/org/apache/tomcat/util/net/ca.jks");
        Session wsSession = wsContainer.connectToServer(
                TesterProgrammaticEndpoint.class,
                clientEndpointConfig,
                new URI("wss://localhost:" + getPort() +
                        TesterEchoServer.Config.PATH_ASYNC));
        CountDownLatch latch = new CountDownLatch(1);
        BasicText handler = new BasicText(latch);
        wsSession.addMessageHandler(handler);
        wsSession.getBasicRemote().sendText(MESSAGE_STRING_1);


        boolean latchResult = handler.getLatch().await(10, TimeUnit.SECONDS);


        Assert.assertTrue(latchResult);

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        tomcat.start();


        WebSocketContainer wsContainer =
                ContainerProvider.getWebSocketContainer();


        Session s = connectToEchoServer(wsContainer, EndpointA.class,
                TesterEchoServer.Config.PATH_BASIC_LIMIT);


        StringBuilder msg = new StringBuilder();
        for (long i = 0; i < size; i++) {
            msg.append('x');
        }


        s.getBasicRemote().sendText(msg.toString());


        // Wait for up to 5 seconds for session to close
        boolean open = s.isOpen();
        int count = 0;
        while (open != expectOpen && count < 50) {
            Thread.sleep(100);
            count++;
            open = s.isOpen();
        }


        Assert.assertEquals(Boolean.valueOf(expectOpen),
                Boolean.valueOf(s.isOpen()));
    }

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        ClientEndpointConfig clientEndpointConfig =
                ClientEndpointConfig.Builder.create().build();
        clientEndpointConfig.getUserProperties().put(
                WsWebSocketContainer.SSL_TRUSTSTORE_PROPERTY,
                "test/org/apache/tomcat/util/net/ca.jks");
        Session wsSession = wsContainer.connectToServer(
                TesterProgrammaticEndpoint.class,
                clientEndpointConfig,
                new URI("wss://localhost:" + getPort() +
                        TesterFirehoseServer.Config.PATH));
        CountDownLatch latch =
                new CountDownLatch(TesterFirehoseServer.MESSAGE_COUNT);
        BasicText handler = new BasicText(latch);
        wsSession.addMessageHandler(handler);
        wsSession.getBasicRemote().sendText("Hello");


        // Ignore the latch result as the message count test below will tell us
        // if the right number of messages arrived
        handler.getLatch().await(TesterFirehoseServer.WAIT_TIME_MILLIS,
                TimeUnit.MILLISECONDS);

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        WebSocketContainer wsContainer = ContainerProvider
                .getWebSocketContainer();


        tomcat.start();


        Session wsSession = wsContainer.connectToServer(
                TesterProgrammaticEndpoint.class, ClientEndpointConfig.Builder
                        .create().build(), new URI("ws://localhost:"
                        + getPort() + TesterEchoServer.Config.PATH_ASYNC));


        CountDownLatch latch = new CountDownLatch(1);
        TesterEndpoint tep = (TesterEndpoint) wsSession.getUserProperties()
                .get("endpoint");
        tep.setLatch(latch);


        PongMessageHandler handler = new PongMessageHandler(latch);
        wsSession.addMessageHandler(handler);
        wsSession.getBasicRemote().sendPing(applicationData);


        boolean latchResult = handler.getLatch().await(10, TimeUnit.SECONDS);
        Assert.assertTrue(latchResult);
        Assert.assertArrayEquals(applicationData.array(),
                (handler.getMessages().peek()).getApplicationData().array());

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        WebSocketContainer wsContainer = ContainerProvider
                .getWebSocketContainer();


        tomcat.start();


        Session wsSession = wsContainer.connectToServer(
                TesterProgrammaticEndpoint.class, ClientEndpointConfig.Builder
                        .create().preferredSubprotocols(Arrays.asList("sp3"))
                        .build(), new URI("ws://localhost:" + getPort()
                        + SubProtocolsEndpoint.PATH_BASIC));


        Assert.assertTrue(wsSession.isOpen());
        if (wsSession.getNegotiatedSubprotocol() != null) {
            Assert.assertTrue(wsSession.getNegotiatedSubprotocol().isEmpty());
        }
        wsSession.close();


        wsSession = wsContainer.connectToServer(
                TesterProgrammaticEndpoint.class, ClientEndpointConfig.Builder
                        .create().preferredSubprotocols(Arrays.asList("sp2"))
                        .build(), new URI("ws://localhost:" + getPort()
                        + SubProtocolsEndpoint.PATH_BASIC));


        Assert.assertTrue(wsSession.isOpen());
        Assert.assertEquals("sp2", wsSession.getNegotiatedSubprotocol());
        // Client thread might move faster than server. Wait for upto 5s for the
        // subProtocols to be set
        int count = 0;
        while (count < 50 && SubProtocolsEndpoint.subprotocols == null) {
            count++;
            Thread.sleep(100);
        }
        Assert.assertNotNull(SubProtocolsEndpoint.subprotocols);
        Assert.assertArrayEquals(new String[]{"sp1","sp2"},
                SubProtocolsEndpoint.subprotocols.toArray(new String[2]));
        wsSession.close();
    }

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        WebSocketContainer wsContainer =
                ContainerProvider.getWebSocketContainer();


        tomcat.start();


        Session wsSession;
        URI uri = new URI("ws://localhost:" + getPort() +
                TesterEchoServer.Config.PATH_ASYNC);
        if (Endpoint.class.isAssignableFrom(clazz)) {
            @SuppressWarnings("unchecked")
            Class<? extends Endpoint> endpointClazz =
                    (Class<? extends Endpoint>) clazz;
            wsSession = wsContainer.connectToServer(endpointClazz,
                    Builder.create().build(), uri);
        } else {
            wsSession = wsContainer.connectToServer(clazz, uri);
        }


        CountDownLatch latch = new CountDownLatch(1);
        TesterEndpoint tep =
                (TesterEndpoint) wsSession.getUserProperties().get("endpoint");
        tep.setLatch(latch);
        AsyncHandler<?> handler = new AsyncText(latch);


        wsSession.addMessageHandler(handler);


        Writer w = wsSession.getBasicRemote().getSendWriter();


        for (int i = 0; i < 8; i++) {
            w.write(TEST_MESSAGE_5K);
        }

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        tomcat.start();


        Client client = new Client();
        URI uri = new URI("ws://localhost:" + getPort() + "/");


        Session session = wsContainer.connectToServer(client, uri);


        client.waitForClose(5);
        Assert.assertTrue(session.isOpen());
    }

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        tomcat.start();


        Client client = new Client();
        URI uri = new URI("ws://localhost:" + getPort() + PATH_PROGRAMMATIC_EP);
        Session session = wsContainer.connectToServer(client, uri);


        MsgString msg1 = new MsgString();
        msg1.setData(MESSAGE_ONE);
        session.getBasicRemote().sendObject(msg1);
        // Should not take very long
        int i = 0;
        while (i < 20) {
            if (MsgStringMessageHandler.received.size() > 0 &&
                    client.received.size() > 0) {
                break;
            }
            Thread.sleep(100);
            i++;
        }


        // Check messages were received
        Assert.assertEquals(1, MsgStringMessageHandler.received.size());
        Assert.assertEquals(1, client.received.size());


        // Check correct messages were received
        Assert.assertEquals(MESSAGE_ONE,
                ((MsgString) MsgStringMessageHandler.received.peek()).getData());
        Assert.assertEquals(MESSAGE_ONE,
                new String(((MsgByte) client.received.peek()).getData()));
        session.close();
    }

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        tomcat.start();


        Client client = new Client();
        URI uri = new URI("ws://localhost:" + getPort() + PATH_ANNOTATED_EP);
        Session session = wsContainer.connectToServer(client, uri);


        MsgString msg1 = new MsgString();
        msg1.setData(MESSAGE_ONE);
        session.getBasicRemote().sendObject(msg1);


        // Should not take very long
        int i = 0;
        while (i < 20) {
            if (server.received.size() > 0 && client.received.size() > 0) {
                break;
            }
            Thread.sleep(100);
        }


        // Check messages were received
        Assert.assertEquals(1, server.received.size());
        Assert.assertEquals(1, client.received.size());


        // Check correct messages were received
        Assert.assertEquals(MESSAGE_ONE,
                ((MsgString) server.received.peek()).getData());
        Assert.assertEquals(MESSAGE_ONE,
                ((MsgString) client.received.peek()).getData());
        session.close();


        // Should not take very long but some failures have been seen
        i = testEvent(MsgStringEncoder.class.getName()+":init", 0);
        i = testEvent(MsgStringDecoder.class.getName()+":init", i);
        i = testEvent(MsgByteEncoder.class.getName()+":init", i);

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