//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.http2.client;
import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.concurrent.Executor;
import org.eclipse.jetty.http2.FlowControl;
import org.eclipse.jetty.http2.HTTP2Connection;
import org.eclipse.jetty.http2.HTTP2FlowControl;
import org.eclipse.jetty.http2.ISession;
import org.eclipse.jetty.http2.api.Session;
import org.eclipse.jetty.http2.frames.PrefaceFrame;
import org.eclipse.jetty.http2.frames.SettingsFrame;
import org.eclipse.jetty.http2.frames.WindowUpdateFrame;
import org.eclipse.jetty.http2.generator.Generator;
import org.eclipse.jetty.http2.parser.Parser;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.io.ClientConnectionFactory;
import org.eclipse.jetty.io.Connection;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.util.Callback;
import org.eclipse.jetty.util.Promise;
import org.eclipse.jetty.util.thread.Scheduler;
public class HTTP2ClientConnectionFactory implements ClientConnectionFactory
{
public static final String CLIENT_CONTEXT_KEY = "http2.client";
public static final String BYTE_BUFFER_POOL_CONTEXT_KEY = "http2.client.byteBufferPool";
public static final String EXECUTOR_CONTEXT_KEY = "http2.client.executor";
public static final String SCHEDULER_CONTEXT_KEY = "http2.client.scheduler";
public static final String SESSION_LISTENER_CONTEXT_KEY = "http2.client.sessionListener";
public static final String SESSION_PROMISE_CONTEXT_KEY = "http2.client.sessionPromise";
private int initialSessionWindow = FlowControl.DEFAULT_WINDOW_SIZE;
@Override
public Connection newConnection(EndPoint endPoint, Map<String, Object> context) throws IOException
{
HTTP2Client client = (HTTP2Client)context.get(CLIENT_CONTEXT_KEY);
ByteBufferPool byteBufferPool = (ByteBufferPool)context.get(BYTE_BUFFER_POOL_CONTEXT_KEY);
Executor executor = (Executor)context.get(EXECUTOR_CONTEXT_KEY);
Scheduler scheduler = (Scheduler)context.get(SCHEDULER_CONTEXT_KEY);
Session.Listener listener = (Session.Listener)context.get(SESSION_LISTENER_CONTEXT_KEY);
@SuppressWarnings("unchecked")
Promise<Session> promise = (Promise<Session>)context.get(SESSION_PROMISE_CONTEXT_KEY);
Generator generator = new Generator(byteBufferPool, 4096);
HTTP2ClientSession session = new HTTP2ClientSession(scheduler, endPoint, generator, listener, new HTTP2FlowControl(FlowControl.DEFAULT_WINDOW_SIZE));
Parser parser = new Parser(byteBufferPool, session, 4096, 8192);
return new HTTP2ClientConnection(client, byteBufferPool, executor, endPoint, parser, session, 8192, false, promise, listener);
}
public int getInitialSessionWindow()
{
return initialSessionWindow;
}
public void setInitialSessionWindow(int initialSessionWindow)
{
this.initialSessionWindow = initialSessionWindow;
}
private class HTTP2ClientConnection extends HTTP2Connection implements Callback
{
private final HTTP2Client client;
private final Promise<Session> promise;
private final Session.Listener listener;
public HTTP2ClientConnection(HTTP2Client client, ByteBufferPool byteBufferPool, Executor executor, EndPoint endpoint, Parser parser, ISession session, int bufferSize, boolean dispatchIO, Promise<Session> promise, Session.Listener listener)
{
super(byteBufferPool, executor, endpoint, parser, session, bufferSize, dispatchIO);
this.client = client;
this.promise = promise;
this.listener = listener;
}
@Override
public void onOpen()
{
super.onOpen();
Map<Integer, Integer> settings = listener.onPreface(getSession());
if (settings == null)
settings = Collections.emptyMap();
PrefaceFrame prefaceFrame = new PrefaceFrame();
SettingsFrame settingsFrame = new SettingsFrame(settings, false);
int windowDelta = getInitialSessionWindow() - FlowControl.DEFAULT_WINDOW_SIZE;
if (windowDelta > 0)
getSession().control(null, this, prefaceFrame, settingsFrame, new WindowUpdateFrame(0, windowDelta));
else
getSession().control(null, this, prefaceFrame, settingsFrame);
}
@Override
public void onClose()
{
super.onClose();
client.removeSession(getSession());
}
@Override
public void succeeded()
{
client.addSession(getSession());
promise.succeeded(getSession());
}
@Override
public void failed(Throwable x)
{
close();
promise.failed(x);
}
}
}