/*
* 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.tomcat.websocket;
import java.io.IOException;
import java.io.Writer;
import java.nio.ByteBuffer;
import java.util.concurrent.atomic.AtomicInteger;
import jakarta.servlet.ServletContextEvent;
import jakarta.websocket.DeploymentException;
import jakarta.websocket.OnError;
import jakarta.websocket.OnMessage;
import jakarta.websocket.Session;
import jakarta.websocket.server.ServerContainer;
import jakarta.websocket.server.ServerEndpoint;
import org.apache.tomcat.websocket.server.Constants;
import org.apache.tomcat.websocket.server.WsContextListener;
public class TesterEchoServer {
public static class Config extends WsContextListener {
public static final String PATH_ASYNC = "/echoAsync";
public static final String PATH_BASIC = "/echoBasic";
public static final String PATH_BASIC_LIMIT_LOW = "/echoBasicLimitLow";
public static final String PATH_BASIC_LIMIT_HIGH = "/echoBasicLimitHigh";
public static final String PATH_WRITER_ERROR = "/echoWriterError";
@Override
public void contextInitialized(ServletContextEvent sce) {
super.contextInitialized(sce);
ServerContainer sc = (ServerContainer) sce.getServletContext()
.getAttribute(Constants.SERVER_CONTAINER_SERVLET_CONTEXT_ATTRIBUTE);
try {
sc.addEndpoint(Async.class);
sc.addEndpoint(Basic.class);
sc.addEndpoint(BasicLimitLow.class);
sc.addEndpoint(BasicLimitHigh.class);
sc.addEndpoint(WriterError.class);
sc.addEndpoint(RootEcho.class);
} catch (DeploymentException e) {
throw new IllegalStateException(e);
}
}
}
@ServerEndpoint("/echoAsync")
public static class Async {
@OnMessage
public void echoTextMessage(Session session, String msg, boolean last) {
try {
session.getBasicRemote().sendText(msg, last);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
@OnMessage
public void echoBinaryMessage(Session session, ByteBuffer msg, boolean last) {
try {
session.getBasicRemote().sendBinary(msg, last);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
}
@ServerEndpoint("/echoBasic")
public static class Basic {
@OnMessage
public void echoTextMessage(Session session, String msg) {
try {
session.getBasicRemote().sendText(msg);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
@OnMessage
public void echoBinaryMessage(Session session, ByteBuffer msg) {
try {
session.getBasicRemote().sendBinary(msg);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
}
@ServerEndpoint("/echoBasicLimitLow")
public static class BasicLimitLow {
public static final long MAX_SIZE = 10;
@OnMessage(maxMessageSize = MAX_SIZE)
public void echoTextMessage(Session session, String msg) {
try {
session.getBasicRemote().sendText(msg);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
@OnMessage(maxMessageSize = MAX_SIZE)
public void echoBinaryMessage(Session session, ByteBuffer msg) {
try {
session.getBasicRemote().sendBinary(msg);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
}
@ServerEndpoint("/echoBasicLimitHigh")
public static class BasicLimitHigh {
public static final long MAX_SIZE = 32 * 1024;
@OnMessage(maxMessageSize = MAX_SIZE)
public void echoTextMessage(Session session, String msg) {
try {
session.getBasicRemote().sendText(msg);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
@OnMessage(maxMessageSize = MAX_SIZE)
public void echoBinaryMessage(Session session, ByteBuffer msg) {
try {
session.getBasicRemote().sendBinary(msg);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
}
@ServerEndpoint("/echoWriterError")
public static class WriterError {
public static final String MSG_ERROR = "error";
public static final String MSG_COUNT = "count";
public static final String RESULT_PASS = "PASS";
public static final String RESULT_FAIL = "FAIL";
private AtomicInteger errorCount = new AtomicInteger(0);
@OnMessage
public void echoTextMessage(Session session, String msg) {
try (Writer w = session.getBasicRemote().getSendWriter()) {
if (MSG_ERROR.equals(msg)) {
// Simulate an error
throw new RuntimeException();
} else if (MSG_COUNT.equals(msg)) {
int count = 0;
while (count < 200 && errorCount.get() == 0) {
// 200 * 50 == 10,000ms == 10s
try {
Thread.sleep(50);
} catch (InterruptedException e) {
// Ignore
}
count++;
}
if (errorCount.get() == 1) {
w.write(RESULT_PASS);
} else {
w.write(RESULT_FAIL);
}
} else {
// Default is echo
w.write(msg);
}
} catch (IOException ioe) {
// Should not happen
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
@OnError
public void onError(@SuppressWarnings("unused") Throwable t) {
errorCount.incrementAndGet();
}
}
@ServerEndpoint("/")
public static class RootEcho {
@OnMessage
public void echoTextMessage(Session session, String msg) {
try {
session.getBasicRemote().sendText(msg);
} catch (IOException ioe) {
try {
session.close();
} catch (IOException ignore) {
// Ignore
}
}
}
}
}