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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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 io.undertow.websockets.extensions;
import java.io.IOException;
import java.net.InetSocketAddress;
import io.undertow.server.DefaultByteBufferPool;
import io.undertow.server.HttpHandler;
import io.undertow.server.protocol.http.HttpOpenListener;
import io.undertow.util.Transfer;
import io.undertow.websockets.WebSocketConnectionCallback;
import io.undertow.websockets.WebSocketProtocolHandshakeHandler;
import io.undertow.websockets.core.StreamSinkFrameChannel;
import io.undertow.websockets.core.StreamSourceFrameChannel;
import io.undertow.websockets.core.WebSocketChannel;
import io.undertow.websockets.core.WebSocketFrameType;
import io.undertow.websockets.spi.WebSocketHttpExchange;
import org.apache.log4j.BasicConfigurator;
import org.xnio.ChannelExceptionHandler;
import org.xnio.ChannelListener;
import org.xnio.ChannelListeners;
import org.xnio.OptionMap;
import org.xnio.Options;
import org.xnio.StreamConnection;
import org.xnio.Xnio;
import org.xnio.XnioWorker;
import org.xnio.channels.AcceptingChannel;
/**
* A WebSocket Server implementation for use with <a href="http://www.tavendo.de/autobahn/testsuite.html">AutoBahn test suite</a>.
* <p>
* A variant of {@link io.undertow.websockets.core.protocol.server.AutobahnWebSocketServer} but focus in extensions capabilities.
* <p>
* It uses a custom {@link ChannelListener} as a receiver, instead to use a {@link io.undertow.websockets.core.AbstractReceiveListener} .
*
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
* @author Lucas Ponce
*/
public class AutobahnExtensionCustomReceiverServer {
private HttpOpenListener openListener;
private XnioWorker worker;
private AcceptingChannel<StreamConnection> server;
private Xnio xnio;
private final int port;
public static WebSocketChannel current;
public AutobahnExtensionCustomReceiverServer(int port) {
this.port = port;
}
private static final ChannelExceptionHandler<StreamSinkFrameChannel> W_H = new ChannelExceptionHandler<StreamSinkFrameChannel>() {
@Override
public void handleException(StreamSinkFrameChannel channel, IOException exception) {
exception.printStackTrace();
}
};
private static final ChannelExceptionHandler<StreamSourceFrameChannel> R_H = new ChannelExceptionHandler<StreamSourceFrameChannel>() {
@Override
public void handleException(StreamSourceFrameChannel channel, IOException exception) {
exception.printStackTrace();
}
};
public void run() {
xnio = Xnio.getInstance();
try {
worker = xnio.createWorker(OptionMap.builder()
.set(Options.WORKER_WRITE_THREADS, 4)
.set(Options.WORKER_READ_THREADS, 4)
.set(Options.CONNECTION_HIGH_WATER, 1000000)
.set(Options.CONNECTION_LOW_WATER, 1000000)
.set(Options.WORKER_TASK_CORE_THREADS, 10)
.set(Options.WORKER_TASK_MAX_THREADS, 12)
.set(Options.TCP_NODELAY, true)
.set(Options.CORK, true)
.getMap());
OptionMap serverOptions = OptionMap.builder()
.set(Options.WORKER_ACCEPT_THREADS, 4)
.set(Options.TCP_NODELAY, true)
.set(Options.REUSE_ADDRESSES, true)
.getMap();
openListener = new HttpOpenListener(new DefaultByteBufferPool(false, 8192));
ChannelListener acceptListener = ChannelListeners.openListenerAdapter(openListener);
server = worker.createStreamConnectionServer(new InetSocketAddress(port), acceptListener, serverOptions);
setRootHandler(getRootHandler()
.addExtension(new PerMessageDeflateHandshake())
);
server.resumeAccepts();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static WebSocketProtocolHandshakeHandler getRootHandler() {
return new WebSocketProtocolHandshakeHandler(new WebSocketConnectionCallback() {
@Override
public void onConnect(final WebSocketHttpExchange exchange, final WebSocketChannel channel) {
current = channel;
channel.getReceiveSetter().set(new Receiver());
channel.resumeReceives();
}
});
}
private static final class Receiver implements ChannelListener<WebSocketChannel> {
@Override
public void handleEvent(final WebSocketChannel channel) {
try {
final StreamSourceFrameChannel ws = channel.receive();
if (ws != null) {
StreamSinkFrameChannel target;
if (ws.getType() == WebSocketFrameType.PING ||
ws.getType() == WebSocketFrameType.CLOSE) {
target = channel.send(ws.getType() == WebSocketFrameType.PING ? WebSocketFrameType.PONG : WebSocketFrameType.CLOSE);
} else if (ws.getType() == WebSocketFrameType.PONG) {
ws.getReadSetter().set(ChannelListeners.drainListener(Long.MAX_VALUE, null, null));
ws.wakeupReads();
return;
} else {
target = channel.send(ws.getType());
}
Transfer.initiateTransfer(ws, target, null, ChannelListeners.writeShutdownChannelListener(new ChannelListener<StreamSinkFrameChannel>() {
@Override
public void handleEvent(StreamSinkFrameChannel c) {
channel.resumeReceives();
}
}, W_H), R_H, W_H, channel.getBufferPool());
}
} catch (IOException e) {
e.printStackTrace();
//IoUtils.safeClose(channel);
}
}
}
/**
* Sets the root handler for the default web server
*
* @param rootHandler The handler to use
*/
private void setRootHandler(HttpHandler rootHandler) {
openListener.setRootHandler(rootHandler);
}
public static void main(String[] args) {
/*
Use BasicConfigurator.configure() for fully console debug
*/
if (args.length == 1) {
if (args[0].equals("--debug")) {
BasicConfigurator.configure();
}
}
new AutobahnExtensionCustomReceiverServer(7777).run();
}
}