| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.websocket.jsr356.server; |
| |
| import java.util.List; |
| import javax.websocket.Extension; |
| import javax.websocket.HandshakeResponse; |
| import javax.websocket.server.HandshakeRequest; |
| import javax.websocket.server.ServerEndpointConfig; |
| |
| import org.eclipse.jetty.util.log.Log; |
| import org.eclipse.jetty.util.log.Logger; |
| import org.eclipse.jetty.websocket.api.util.QuoteUtil; |
| |
| public class BasicServerEndpointConfigurator extends ServerEndpointConfig.Configurator |
| { |
| private static final Logger LOG = Log.getLogger(BasicServerEndpointConfigurator.class); |
| private static final String NO_SUBPROTOCOL = ""; |
| public static final ServerEndpointConfig.Configurator INSTANCE = new BasicServerEndpointConfigurator(); |
| |
| @Override |
| public boolean checkOrigin(String originHeaderValue) |
| { |
| return true; |
| } |
| |
| @Override |
| public <T> T getEndpointInstance(Class<T> endpointClass) throws InstantiationException |
| { |
| if (LOG.isDebugEnabled()) |
| { |
| LOG.debug(".getEndpointInstance({})",endpointClass); |
| } |
| try |
| { |
| return endpointClass.newInstance(); |
| } |
| catch (IllegalAccessException e) |
| { |
| throw new InstantiationException(String.format("%s: %s",e.getClass().getName(),e.getMessage())); |
| } |
| } |
| |
| @Override |
| public List<Extension> getNegotiatedExtensions(List<Extension> installed, List<Extension> requested) |
| { |
| return requested; |
| } |
| |
| @Override |
| public String getNegotiatedSubprotocol(List<String> supported, List<String> requested) |
| { |
| if ((requested == null) || (requested.size() == 0)) |
| { |
| // nothing requested, don't return anything |
| return NO_SUBPROTOCOL; |
| } |
| |
| // Nothing specifically called out as being supported by the endpoint |
| if ((supported == null) || (supported.isEmpty())) |
| { |
| // Just return the first hit in this case |
| LOG.warn("Client requested Subprotocols on endpoint with none supported: {}",QuoteUtil.join(requested,",")); |
| return NO_SUBPROTOCOL; |
| } |
| |
| // Return the first matching hit from the list of supported protocols. |
| for (String possible : requested) |
| { |
| if (possible == null) |
| { |
| // skip null |
| continue; |
| } |
| |
| if (supported.contains(possible)) |
| { |
| return possible; |
| } |
| } |
| |
| LOG.warn("Client requested subprotocols {} do not match any endpoint supported subprotocols {}",QuoteUtil.join(requested,","), |
| QuoteUtil.join(supported,",")); |
| return NO_SUBPROTOCOL; |
| } |
| |
| @Override |
| public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) |
| { |
| /* do nothing */ |
| } |
| } |