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

        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());
        Assert.assertArrayEquals(new String[]{"sp1","sp2"},
                SubProtocolsEndpoint.subprotocols.toArray(new String[2]));
        wsSession.close();
    }

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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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        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);
        }

View Full Code Here


        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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        final CountDownLatch onCloseLatch = new CountDownLatch(1);


        try {
            final ClientManager client = createClient();


            final Session session = client.connectToServer(new Endpoint() {
                @Override
                public void onOpen(Session session, EndpointConfig EndpointConfig) {


                    try {
                        session.addMessageHandler(new MessageHandler.Whole<String>() {
                            @Override
                            public void onMessage(String message) {
                                System.out.println("### Received: " + message);


                                if (message.equals("Do or do not, there is no try. (from your server)")) {
                                    messageLatch.countDown();
                                } else if (message.equals("onOpen")) {
                                    onOpenLatch.countDown();
                                }
                            }
                        });


                        session.getBasicRemote().sendText("Do or do not, there is no try.");
                    } catch (IOException e) {
                        // do nothing
                    }
                }

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        }
    }


    private void removeUserAndBroadcast(String username) {
        logger.info("Removing " + username + " from chat.");
        Session nextSession = connections.get(username);


        try {
            nextSession.close(new CloseReason(CloseReason.CloseCodes.NORMAL_CLOSURE, "User logged off"));
        } catch (IOException e) {
            e.printStackTrace();
        }


        connections.remove(username);

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        stopAuctionTimeBroadcast();
        sendAuctionResults();
    }


    private void sendAuctionResults() {
        Session bestBidder = null;


        if (bestBidderName != null) {
            for (Session session : getRemoteClients()) {
                if (session.getUserProperties().get("name").equals(bestBidderName)) {
                    bestBidder = session;
                }
            }
        }


        if (bestBidder != null) {
            AuctionMessage.ResultMessage winnerMessage = new AuctionMessage.ResultMessage(id, String.format("Congratulations, You won the auction and will pay %.0f.", bestBid));
            try {
                bestBidder.getBasicRemote().sendObject(winnerMessage);
            } catch (Exception e) {
                Logger.getLogger(Auction.class.getName()).log(Level.SEVERE, null, e);
            }
        }

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        final CountDownLatch messageLatch = new CountDownLatch(1);
        final CountDownLatch onOpenLatch = new CountDownLatch(1);


        try {
            final ClientManager client = createClient();
            Session session = client.connectToServer(new Endpoint() {
                @Override
                public void onOpen(Session session, EndpointConfig EndpointConfig) {
                    session.addMessageHandler(new MessageHandler.Whole<String>() {
                        @Override
                        public void onMessage(String message) {
                            System.out.println("### Received: " + message);


                            if (message.equals(MESSAGE + " (from your server)")) {
                                messageLatch.countDown();
                            } else if (message.equals("onOpen")) {
                                onOpenLatch.countDown();
                            }
                        }
                    });


                }
            }, ClientEndpointConfig.Builder.create().build(), getURI(EchoEndpoint.class, "wss"));
            session.getBasicRemote().sendText(MESSAGE);


            messageLatch.await(60, TimeUnit.SECONDS);
            if (messageLatch.getCount() != 0 || onOpenLatch.getCount() != 0) {
                fail();
            }

View Full Code Here


        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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