/*
* JBoss, Home of Professional Open Source.
* 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.server.protocol.spdy;
import io.undertow.UndertowLogger;
import io.undertow.UndertowMessages;
import io.undertow.server.HttpHandler;
import io.undertow.server.OpenListener;
import io.undertow.server.protocol.http.HttpOpenListener;
import io.undertow.spdy.SpdyChannel;
import org.eclipse.jetty.npn.NextProtoNego;
import org.xnio.ChannelListener;
import org.xnio.IoUtils;
import org.xnio.OptionMap;
import org.xnio.Pool;
import org.xnio.Pooled;
import org.xnio.StreamConnection;
import org.xnio.channels.StreamSourceChannel;
import org.xnio.conduits.PushBackStreamSourceConduit;
import org.xnio.ssl.JsseXnioSsl;
import org.xnio.ssl.SslConnection;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.List;
/**
* Open listener for SPDY server
*
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
public final class SpdyOpenListener implements ChannelListener<StreamConnection>, OpenListener {
private static final String SPDY_3 = "spdy/3";
private static final String SPDY_3_1 = "spdy/3.1";
private static final String HTTP_1_1 = "http/1.1";
private final Pool<ByteBuffer> bufferPool;
private final Pool<ByteBuffer> heapBufferPool;
private final int bufferSize;
private volatile HttpHandler rootHandler;
private volatile OptionMap undertowOptions;
private final HttpOpenListener delegate;
public SpdyOpenListener(final Pool<ByteBuffer> pool, final Pool<ByteBuffer> heapBufferPool, final int bufferSize) {
this(pool, heapBufferPool, OptionMap.EMPTY, bufferSize, null);
}
public SpdyOpenListener(final Pool<ByteBuffer> pool, final Pool<ByteBuffer> heapBufferPool, final OptionMap undertowOptions, final int bufferSize) {
this(pool, heapBufferPool, bufferSize, null);
}
public SpdyOpenListener(final Pool<ByteBuffer> pool, final Pool<ByteBuffer> heapBufferPool, final int bufferSize, HttpOpenListener httpDelegate) {
this(pool, heapBufferPool, OptionMap.EMPTY, bufferSize, httpDelegate);
}
public SpdyOpenListener(final Pool<ByteBuffer> pool, final Pool<ByteBuffer> heapBufferPool, final OptionMap undertowOptions, final int bufferSize, HttpOpenListener httpDelegate) {
this.undertowOptions = undertowOptions;
this.bufferPool = pool;
this.bufferSize = bufferSize;
this.delegate = httpDelegate;
this.heapBufferPool = heapBufferPool;
Pooled<ByteBuffer> buff = heapBufferPool.allocate();
try {
if (!buff.getResource().hasArray()) {
throw UndertowMessages.MESSAGES.mustProvideHeapBuffer();
}
} finally {
buff.free();
}
}
public void handleEvent(final StreamConnection channel) {
if (UndertowLogger.REQUEST_LOGGER.isTraceEnabled()) {
UndertowLogger.REQUEST_LOGGER.tracef("Opened connection with %s", channel.getPeerAddress());
}
final PotentialSPDYConnection potentialConnection = new PotentialSPDYConnection(channel);
channel.getSourceChannel().setReadListener(potentialConnection);
NextProtoNego.put(JsseXnioSsl.getSslEngine((SslConnection) channel), new NextProtoNego.ServerProvider() {
@Override
public void unsupported() {
potentialConnection.selected = HTTP_1_1;
}
@Override
public List<String> protocols() {
return Arrays.asList(SPDY_3_1, SPDY_3, HTTP_1_1);
}
@Override
public void protocolSelected(String s) {
potentialConnection.selected = s;
}
});
potentialConnection.handleEvent(channel.getSourceChannel());
}
@Override
public HttpHandler getRootHandler() {
return rootHandler;
}
@Override
public void setRootHandler(final HttpHandler rootHandler) {
this.rootHandler = rootHandler;
if(delegate != null) {
delegate.setRootHandler(rootHandler);
}
}
@Override
public OptionMap getUndertowOptions() {
return undertowOptions;
}
@Override
public void setUndertowOptions(final OptionMap undertowOptions) {
if (undertowOptions == null) {
throw UndertowMessages.MESSAGES.argumentCannotBeNull("undertowOptions");
}
this.undertowOptions = undertowOptions;
}
@Override
public Pool<ByteBuffer> getBufferPool() {
return bufferPool;
}
private class PotentialSPDYConnection implements ChannelListener<StreamSourceChannel> {
private String selected;
private final StreamConnection channel;
private PotentialSPDYConnection(StreamConnection channel) {
this.channel = channel;
}
@Override
public void handleEvent(StreamSourceChannel source) {
Pooled<ByteBuffer> buffer = bufferPool.allocate();
boolean free = true;
try {
while (true) {
int res = channel.getSourceChannel().read(buffer.getResource());
if (res == -1) {
IoUtils.safeClose(channel);
return;
}
buffer.getResource().flip();
if (SPDY_3.equals(selected) || SPDY_3_1.equals(selected)) {
//cool, we have a spdy connection.
SpdyChannel channel = new SpdyChannel(this.channel, bufferPool, buffer, heapBufferPool);
free = false;
channel.getReceiveSetter().set(new SpdyReceiveListener(rootHandler, getUndertowOptions(), bufferSize));
channel.resumeReceives();
return;
} else if (HTTP_1_1.equals(selected) || res > 0) {
if (delegate == null) {
UndertowLogger.REQUEST_IO_LOGGER.couldNotInitiateSpdyConnection();
IoUtils.safeClose(channel);
return;
}
channel.getSourceChannel().setReadListener(null);
if (res > 0) {
PushBackStreamSourceConduit pushBackStreamSourceConduit = new PushBackStreamSourceConduit(channel.getSourceChannel().getConduit());
channel.getSourceChannel().setConduit(pushBackStreamSourceConduit);
pushBackStreamSourceConduit.pushBack(buffer);
free = false;
}
delegate.handleEvent(channel);
return;
} else if (res == 0) {
channel.getSourceChannel().resumeReads();
return;
}
}
} catch (IOException e) {
UndertowLogger.REQUEST_IO_LOGGER.ioException(e);
IoUtils.safeClose(channel);
} finally {
if (free) {
buffer.free();
}
}
}
}
}