| /* |
| * 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 org.eclipse.jetty.io.RuntimeIOException; |
| import org.eclipse.jetty.websocket.api.BatchMode; |
| import org.eclipse.jetty.websocket.api.RemoteEndpoint; |
| import org.eclipse.jetty.websocket.api.WebSocketAdapter; |
| import org.eclipse.jetty.websocket.api.Session; |
| import org.eclipse.jetty.websocket.server.WebSocketHandler; |
| import org.eclipse.jetty.websocket.servlet.ServletUpgradeRequest; |
| import org.eclipse.jetty.websocket.servlet.ServletUpgradeResponse; |
| import org.eclipse.jetty.websocket.servlet.WebSocketCreator; |
| import org.eclipse.jetty.websocket.servlet.WebSocketServletFactory; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import javax.websocket.ContainerProvider; |
| import javax.websocket.WebSocketContainer; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.concurrent.TimeUnit; |
| |
| import static org.hamcrest.CoreMatchers.is; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| /** |
| * A basic test that attempts to proxy websocket connections through Knox |
| * gateway. |
| * <p> |
| * The way the test is set up is as follows: <br> |
| * <ul> |
| * <li>A Mock Websocket server is setup which simply echos the responses sent by |
| * client. |
| * <li>Knox Gateway is set up with websocket handler |
| * {@link GatewayWebsocketHandler} that can proxy the requests. |
| * <li>Appropriate Topology and service definition files are set up with the |
| * address of the Websocket server. |
| * <li>A mock client is setup to connect to gateway. |
| * </ul> |
| * |
| * The test is to confirm whether the message is sent all the way to the backend |
| * Websocket server through Knox and back. |
| * |
| * @since 0.10 |
| */ |
| public class WebsocketServerInitiatedPingTest extends WebsocketEchoTestBase { |
| |
| public WebsocketServerInitiatedPingTest() { |
| super(); |
| } |
| |
| @BeforeClass |
| public static void setUpBeforeClass() throws Exception { |
| handler = new WebsocketServerInitiatedPingHandler(); |
| WebsocketEchoTestBase.setUpBeforeClass(); |
| WebsocketEchoTestBase.startServers("ws"); |
| } |
| |
| @AfterClass |
| public static void tearDownAfterClass() { |
| WebsocketEchoTestBase.tearDownAfterClass(); |
| } |
| |
| /* |
| * Test websocket server initiated ping |
| */ |
| @Test |
| public void testGatewayServerInitiatedPing() throws Exception { |
| WebSocketContainer container = ContainerProvider.getWebSocketContainer(); |
| |
| WebsocketClient client = new WebsocketClient(); |
| container.connectToServer(client, |
| new URI(serverUri.toString() + "gateway/websocket/123foo456bar/channels")); |
| |
| //session.getBasicRemote().sendText("Echo"); |
| client.messageQueue.awaitMessages(1, 10000, TimeUnit.MILLISECONDS); |
| |
| assertThat(client.messageQueue.get(0), is("PingPong")); |
| } |
| |
| /** |
| * A Mock websocket handler |
| * |
| */ |
| private static class WebsocketServerInitiatedPingHandler extends WebSocketHandler implements WebSocketCreator { |
| private final ServerInitiatingPingSocket socket = new ServerInitiatingPingSocket(); |
| |
| @Override |
| public void configure(WebSocketServletFactory factory) { |
| factory.getPolicy().setMaxTextMessageSize(2 * 1024 * 1024); |
| factory.setCreator(this); |
| } |
| |
| @Override |
| public Object createWebSocket(ServletUpgradeRequest req, ServletUpgradeResponse resp) { |
| return socket; |
| } |
| } |
| |
| /** |
| * A simple socket initiating message on connect |
| */ |
| private static class ServerInitiatingPingSocket extends WebSocketAdapter { |
| |
| @Override |
| public void onWebSocketError(Throwable cause) { |
| throw new RuntimeException(cause); |
| } |
| |
| @Override |
| public void onWebSocketConnect(Session sess) { |
| super.onWebSocketConnect(sess); |
| try { |
| Thread.sleep(1000); |
| } catch (Exception e) { |
| } |
| final String textMessage = "PingPong"; |
| final ByteBuffer binaryMessage = ByteBuffer.wrap( |
| textMessage.getBytes(StandardCharsets.UTF_8)); |
| |
| try { |
| RemoteEndpoint remote = getRemote(); |
| remote.sendPing(binaryMessage); |
| if (remote.getBatchMode() == BatchMode.ON) { |
| remote.flush(); |
| } |
| } catch (IOException x) { |
| throw new RuntimeIOException(x); |
| } |
| } |
| } |
| } |