Examples with Extension javax.websocket.Extension used on opensource projects

Example 11 with Extension

use of javax.websocket.Extension in project undertow by undertow-io.

the class ServerWebSocketContainer method connectToServerInternal.

private Session connectToServerInternal(final Endpoint endpointInstance, final ConfiguredClientEndpoint cec, WebSocketClient.ConnectionBuilder connectionBuilder) throws DeploymentException, IOException {
    IoFuture<WebSocketChannel> session = connectionBuilder.connect();
    Number timeout = (Number) cec.getConfig().getUserProperties().get(TIMEOUT);
    IoFuture.Status result = session.await(timeout == null ? DEFAULT_WEB_SOCKET_TIMEOUT_SECONDS : timeout.intValue(), TimeUnit.SECONDS);
    if (result == IoFuture.Status.WAITING) {
        //add a notifier to close the channel if the connection actually completes
        session.cancel();
        session.addNotifier(new IoFuture.HandlingNotifier<WebSocketChannel, Object>() {

            @Override
            public void handleDone(WebSocketChannel data, Object attachment) {
                IoUtils.safeClose(data);
            }
        }, null);
        throw JsrWebSocketMessages.MESSAGES.connectionTimedOut();
    }
    WebSocketChannel channel;
    try {
        channel = session.get();
    } catch (UpgradeFailedException e) {
        throw new DeploymentException(e.getMessage(), e);
    }
    EndpointSessionHandler sessionHandler = new EndpointSessionHandler(this);
    final List<Extension> extensions = new ArrayList<>();
    final Map<String, Extension> extMap = new HashMap<>();
    for (Extension ext : cec.getConfig().getExtensions()) {
        extMap.put(ext.getName(), ext);
    }
    String subProtocol = null;
    if (connectionBuilder.getClientNegotiation() != null) {
        for (WebSocketExtension e : connectionBuilder.getClientNegotiation().getSelectedExtensions()) {
            Extension ext = extMap.get(e.getName());
            if (ext == null) {
                throw JsrWebSocketMessages.MESSAGES.extensionWasNotPresentInClientHandshake(e.getName(), connectionBuilder.getClientNegotiation().getSupportedExtensions());
            }
            extensions.add(ExtensionImpl.create(e));
        }
        subProtocol = connectionBuilder.getClientNegotiation().getSelectedSubProtocol();
    }
    UndertowSession undertowSession = new UndertowSession(channel, connectionBuilder.getUri(), Collections.<String, String>emptyMap(), Collections.<String, List<String>>emptyMap(), sessionHandler, null, new ImmediateInstanceHandle<>(endpointInstance), cec.getConfig(), connectionBuilder.getUri().getQuery(), cec.getEncodingFactory().createEncoding(cec.getConfig()), cec, subProtocol, extensions, connectionBuilder);
    endpointInstance.onOpen(undertowSession, cec.getConfig());
    channel.resumeReceives();
    return undertowSession;
}

Example 12 with Extension

use of javax.websocket.Extension in project undertow by undertow-io.

the class JsrHybi13Handshake method selectedExtension.

@Override
protected List<WebSocketExtension> selectedExtension(List<WebSocketExtension> extensionList) {
    List<Extension> ext = new ArrayList<>();
    for (WebSocketExtension i : extensionList) {
        ext.add(ExtensionImpl.create(i));
    }
    List<Extension> selected = HandshakeUtil.selectExtensions(config, ext);
    if (selected == null) {
        return Collections.emptyList();
    }
    Map<String, ExtensionHandshake> extensionMap = new HashMap<>();
    for (ExtensionHandshake availible : availableExtensions) {
        extensionMap.put(availible.getName(), availible);
    }
    List<WebSocketExtension> ret = new ArrayList<>();
    List<ExtensionHandshake> accepted = new ArrayList<>();
    for (Extension i : selected) {
        ExtensionHandshake handshake = extensionMap.get(i.getName());
        if (handshake == null) {
            //should not happen
            continue;
        }
        List<WebSocketExtension.Parameter> parameters = new ArrayList<>();
        for (Extension.Parameter p : i.getParameters()) {
            parameters.add(new WebSocketExtension.Parameter(p.getName(), p.getValue()));
        }
        if (!handshake.isIncompatible(accepted)) {
            WebSocketExtension accept = handshake.accept(new WebSocketExtension(i.getName(), parameters));
            if (accept != null) {
                ret.add(accept);
                accepted.add(handshake);
            }
        }
    }
    return ret;
}

Example 13 with Extension

use of javax.websocket.Extension in project tomcat by apache.

the class WsWebSocketContainer method connectToServer.

// socketChannel is closed
@SuppressWarnings("resource")
@Override
public Session connectToServer(Endpoint endpoint, ClientEndpointConfig clientEndpointConfiguration, URI path) throws DeploymentException {
    boolean secure = false;
    ByteBuffer proxyConnect = null;
    URI proxyPath;
    // Validate scheme (and build proxyPath)
    String scheme = path.getScheme();
    if ("ws".equalsIgnoreCase(scheme)) {
        proxyPath = URI.create("http" + path.toString().substring(2));
    } else if ("wss".equalsIgnoreCase(scheme)) {
        proxyPath = URI.create("https" + path.toString().substring(3));
        secure = true;
    } else {
        throw new DeploymentException(sm.getString("wsWebSocketContainer.pathWrongScheme", scheme));
    }
    // Validate host
    String host = path.getHost();
    if (host == null) {
        throw new DeploymentException(sm.getString("wsWebSocketContainer.pathNoHost"));
    }
    int port = path.getPort();
    SocketAddress sa = null;
    // Check to see if a proxy is configured. Javadoc indicates return value
    // will never be null
    List<Proxy> proxies = ProxySelector.getDefault().select(proxyPath);
    Proxy selectedProxy = null;
    for (Proxy proxy : proxies) {
        if (proxy.type().equals(Proxy.Type.HTTP)) {
            sa = proxy.address();
            if (sa instanceof InetSocketAddress) {
                InetSocketAddress inet = (InetSocketAddress) sa;
                if (inet.isUnresolved()) {
                    sa = new InetSocketAddress(inet.getHostName(), inet.getPort());
                }
            }
            selectedProxy = proxy;
            break;
        }
    }
    // scheme
    if (port == -1) {
        if ("ws".equalsIgnoreCase(scheme)) {
            port = 80;
        } else {
            // Must be wss due to scheme validation above
            port = 443;
        }
    }
    // If sa is null, no proxy is configured so need to create sa
    if (sa == null) {
        sa = new InetSocketAddress(host, port);
    } else {
        proxyConnect = createProxyRequest(host, port);
    }
    // Create the initial HTTP request to open the WebSocket connection
    Map<String, List<String>> reqHeaders = createRequestHeaders(host, port, clientEndpointConfiguration.getPreferredSubprotocols(), clientEndpointConfiguration.getExtensions());
    clientEndpointConfiguration.getConfigurator().beforeRequest(reqHeaders);
    if (Constants.DEFAULT_ORIGIN_HEADER_VALUE != null && !reqHeaders.containsKey(Constants.ORIGIN_HEADER_NAME)) {
        List<String> originValues = new ArrayList<>(1);
        originValues.add(Constants.DEFAULT_ORIGIN_HEADER_VALUE);
        reqHeaders.put(Constants.ORIGIN_HEADER_NAME, originValues);
    }
    ByteBuffer request = createRequest(path, reqHeaders);
    AsynchronousSocketChannel socketChannel;
    try {
        socketChannel = AsynchronousSocketChannel.open(getAsynchronousChannelGroup());
    } catch (IOException ioe) {
        throw new DeploymentException(sm.getString("wsWebSocketContainer.asynchronousSocketChannelFail"), ioe);
    }
    // Get the connection timeout
    long timeout = Constants.IO_TIMEOUT_MS_DEFAULT;
    String timeoutValue = (String) clientEndpointConfiguration.getUserProperties().get(Constants.IO_TIMEOUT_MS_PROPERTY);
    if (timeoutValue != null) {
        timeout = Long.valueOf(timeoutValue).intValue();
    }
    // Set-up
    // Same size as the WsFrame input buffer
    ByteBuffer response = ByteBuffer.allocate(maxBinaryMessageBufferSize);
    String subProtocol;
    boolean success = false;
    List<Extension> extensionsAgreed = new ArrayList<>();
    Transformation transformation = null;
    // Open the connection
    Future<Void> fConnect = socketChannel.connect(sa);
    AsyncChannelWrapper channel = null;
    if (proxyConnect != null) {
        try {
            fConnect.get(timeout, TimeUnit.MILLISECONDS);
            // Proxy CONNECT is clear text
            channel = new AsyncChannelWrapperNonSecure(socketChannel);
            writeRequest(channel, proxyConnect, timeout);
            HttpResponse httpResponse = processResponse(response, channel, timeout);
            if (httpResponse.getStatus() != 200) {
                throw new DeploymentException(sm.getString("wsWebSocketContainer.proxyConnectFail", selectedProxy, Integer.toString(httpResponse.getStatus())));
            }
        } catch (TimeoutException | InterruptedException | ExecutionException | EOFException e) {
            if (channel != null) {
                channel.close();
            }
            throw new DeploymentException(sm.getString("wsWebSocketContainer.httpRequestFailed"), e);
        }
    }
    if (secure) {
        // Regardless of whether a non-secure wrapper was created for a
        // proxy CONNECT, need to use TLS from this point on so wrap the
        // original AsynchronousSocketChannel
        SSLEngine sslEngine = createSSLEngine(clientEndpointConfiguration.getUserProperties());
        channel = new AsyncChannelWrapperSecure(socketChannel, sslEngine);
    } else if (channel == null) {
        // Only need to wrap as this point if it wasn't wrapped to process a
        // proxy CONNECT
        channel = new AsyncChannelWrapperNonSecure(socketChannel);
    }
    try {
        fConnect.get(timeout, TimeUnit.MILLISECONDS);
        Future<Void> fHandshake = channel.handshake();
        fHandshake.get(timeout, TimeUnit.MILLISECONDS);
        writeRequest(channel, request, timeout);
        HttpResponse httpResponse = processResponse(response, channel, timeout);
        // TODO: Handle redirects
        if (httpResponse.status != 101) {
            throw new DeploymentException(sm.getString("wsWebSocketContainer.invalidStatus", Integer.toString(httpResponse.status)));
        }
        HandshakeResponse handshakeResponse = httpResponse.getHandshakeResponse();
        clientEndpointConfiguration.getConfigurator().afterResponse(handshakeResponse);
        // Sub-protocol
        List<String> protocolHeaders = handshakeResponse.getHeaders().get(Constants.WS_PROTOCOL_HEADER_NAME);
        if (protocolHeaders == null || protocolHeaders.size() == 0) {
            subProtocol = null;
        } else if (protocolHeaders.size() == 1) {
            subProtocol = protocolHeaders.get(0);
        } else {
            throw new DeploymentException(sm.getString("wsWebSocketContainer.invalidSubProtocol"));
        }
        // Extensions
        // Should normally only be one header but handle the case of
        // multiple headers
        List<String> extHeaders = handshakeResponse.getHeaders().get(Constants.WS_EXTENSIONS_HEADER_NAME);
        if (extHeaders != null) {
            for (String extHeader : extHeaders) {
                Util.parseExtensionHeader(extensionsAgreed, extHeader);
            }
        }
        // Build the transformations
        TransformationFactory factory = TransformationFactory.getInstance();
        for (Extension extension : extensionsAgreed) {
            List<List<Extension.Parameter>> wrapper = new ArrayList<>(1);
            wrapper.add(extension.getParameters());
            Transformation t = factory.create(extension.getName(), wrapper, false);
            if (t == null) {
                throw new DeploymentException(sm.getString("wsWebSocketContainer.invalidExtensionParameters"));
            }
            if (transformation == null) {
                transformation = t;
            } else {
                transformation.setNext(t);
            }
        }
        success = true;
    } catch (ExecutionException | InterruptedException | SSLException | EOFException | TimeoutException e) {
        throw new DeploymentException(sm.getString("wsWebSocketContainer.httpRequestFailed"), e);
    } finally {
        if (!success) {
            channel.close();
        }
    }
    // Switch to WebSocket
    WsRemoteEndpointImplClient wsRemoteEndpointClient = new WsRemoteEndpointImplClient(channel);
    WsSession wsSession = new WsSession(endpoint, wsRemoteEndpointClient, this, null, null, null, null, null, extensionsAgreed, subProtocol, Collections.<String, String>emptyMap(), secure, clientEndpointConfiguration);
    WsFrameClient wsFrameClient = new WsFrameClient(response, channel, wsSession, transformation);
    // WsFrame adds the necessary final transformations. Copy the
    // completed transformation chain to the remote end point.
    wsRemoteEndpointClient.setTransformation(wsFrameClient.getTransformation());
    endpoint.onOpen(wsSession, clientEndpointConfiguration);
    registerSession(endpoint, wsSession);
    /* It is possible that the server sent one or more messages as soon as
         * the WebSocket connection was established. Depending on the exact
         * timing of when those messages were sent they could be sat in the
         * input buffer waiting to be read and will not trigger a "data
         * available to read" event. Therefore, it is necessary to process the
         * input buffer here. Note that this happens on the current thread which
         * means that this thread will be used for any onMessage notifications.
         * This is a special case. Subsequent "data available to read" events
         * will be handled by threads from the AsyncChannelGroup's executor.
         */
    wsFrameClient.startInputProcessing();
    return wsSession;
}

Example 14 with Extension

use of javax.websocket.Extension in project tomcat by apache.

the class WsWebSocketContainer method generateExtensionHeaders.

private static List<String> generateExtensionHeaders(List<Extension> extensions) {
    List<String> result = new ArrayList<>(extensions.size());
    for (Extension extension : extensions) {
        StringBuilder header = new StringBuilder();
        header.append(extension.getName());
        for (Extension.Parameter param : extension.getParameters()) {
            header.append(';');
            header.append(param.getName());
            String value = param.getValue();
            if (value != null && value.length() > 0) {
                header.append('=');
                header.append(value);
            }
        }
        result.add(header.toString());
    }
    return result;
}

Example 15 with Extension

use of javax.websocket.Extension in project tomcat by apache.

the class PerMessageDeflate method getExtensionResponse.

@Override
public Extension getExtensionResponse() {
    Extension result = new WsExtension(NAME);
    List<Extension.Parameter> params = result.getParameters();
    if (!serverContextTakeover) {
        params.add(new WsExtensionParameter(SERVER_NO_CONTEXT_TAKEOVER, null));
    }
    if (serverMaxWindowBits != -1) {
        params.add(new WsExtensionParameter(SERVER_MAX_WINDOW_BITS, Integer.toString(serverMaxWindowBits)));
    }
    if (!clientContextTakeover) {
        params.add(new WsExtensionParameter(CLIENT_NO_CONTEXT_TAKEOVER, null));
    }
    if (clientMaxWindowBits != -1) {
        params.add(new WsExtensionParameter(CLIENT_MAX_WINDOW_BITS, Integer.toString(clientMaxWindowBits)));
    }
    return result;
}