| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with this |
| * work for additional information regarding copyright ownership. The ASF |
| * licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package org.apache.knox.gateway.websockets; |
| |
| import javax.websocket.CloseReason; |
| import javax.websocket.Endpoint; |
| import javax.websocket.EndpointConfig; |
| import javax.websocket.MessageHandler; |
| import javax.websocket.Session; |
| |
| /** |
| * A Websocket client with callback which is not annotation based. |
| * This handler accepts String and binary messages. |
| * @since 0.14.0 |
| */ |
| public class ProxyInboundClient extends Endpoint { |
| |
| /** |
| * Callback to be called once we have events on our socket. |
| */ |
| private MessageEventCallback callback; |
| |
| protected Session session; |
| protected EndpointConfig config; |
| |
| |
| public ProxyInboundClient(final MessageEventCallback callback) { |
| super(); |
| this.callback = callback; |
| } |
| |
| /** |
| * Developers must implement this method to be notified when a new |
| * conversation has just begun. |
| * |
| * @param backendSession the session that has just been activated. |
| * @param config the configuration used to configure this endpoint. |
| */ |
| @Override |
| public void onOpen(final javax.websocket.Session backendSession, final EndpointConfig config) { |
| this.session = backendSession; |
| this.config = config; |
| |
| /* Add message handler for binary data */ |
| session.addMessageHandler(new MessageHandler.Whole<byte[]>() { |
| |
| /** |
| * Called when the message has been fully received. |
| * |
| * @param message the message data. |
| */ |
| @Override |
| public void onMessage(final byte[] message) { |
| callback.onMessageBinary(message, true, session); |
| } |
| |
| }); |
| |
| /* Add message handler for text data */ |
| session.addMessageHandler(new MessageHandler.Whole<String>() { |
| |
| /** |
| * Called when the message has been fully received. |
| * |
| * @param message the message data. |
| */ |
| @Override |
| public void onMessage(final String message) { |
| callback.onMessageText(message, session); |
| } |
| |
| }); |
| |
| callback.onConnectionOpen(backendSession); |
| } |
| |
| @Override |
| public void onClose(final javax.websocket.Session backendSession, final CloseReason closeReason) { |
| callback.onConnectionClose(closeReason); |
| this.session = null; |
| } |
| |
| @Override |
| public void onError(final javax.websocket.Session backendSession, final Throwable cause) { |
| callback.onError(cause); |
| this.session = null; |
| } |
| |
| } |