| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 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.spdy.client; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.Executor; |
| |
| import org.eclipse.jetty.io.AbstractConnection; |
| import org.eclipse.jetty.io.ByteBufferPool; |
| import org.eclipse.jetty.io.EndPoint; |
| import org.eclipse.jetty.io.RuntimeIOException; |
| import org.eclipse.jetty.spdy.Controller; |
| import org.eclipse.jetty.spdy.ISession; |
| import org.eclipse.jetty.spdy.IdleListener; |
| import org.eclipse.jetty.spdy.api.GoAwayInfo; |
| import org.eclipse.jetty.spdy.parser.Parser; |
| import org.eclipse.jetty.util.Callback; |
| import org.eclipse.jetty.util.log.Log; |
| import org.eclipse.jetty.util.log.Logger; |
| |
| public class SPDYConnection extends AbstractConnection implements Controller, IdleListener |
| { |
| private static final Logger LOG = Log.getLogger(SPDYConnection.class); |
| private final ByteBufferPool bufferPool; |
| private final Parser parser; |
| private final int bufferSize; |
| private volatile ISession session; |
| private volatile boolean idle = false; |
| |
| public SPDYConnection(EndPoint endPoint, ByteBufferPool bufferPool, Parser parser, Executor executor, boolean dispatchIO) |
| { |
| this(endPoint, bufferPool, parser, executor, dispatchIO, 8192); |
| } |
| |
| public SPDYConnection(EndPoint endPoint, ByteBufferPool bufferPool, Parser parser, Executor executor, boolean dispatchIO, int bufferSize) |
| { |
| // Since SPDY is multiplexed, onFillable() must never block while calling application code. In fact, |
| // the SPDY code always dispatches to a new thread when calling application code, |
| // so here we can safely pass false as last parameter, and avoid to dispatch to onFillable(). |
| // The IO operation (read, parse, etc.) will not block and will be fast in almost all cases. |
| // Big uploads to a server, however, might occupy the Selector thread for a long time and |
| // therefore starve other connections, so by default dispatchIO is true. |
| super(endPoint, executor, dispatchIO); |
| this.bufferPool = bufferPool; |
| this.parser = parser; |
| onIdle(true); |
| this.bufferSize = bufferSize; |
| } |
| |
| @Override |
| public void onOpen() |
| { |
| super.onOpen(); |
| fillInterested(); |
| } |
| |
| @Override |
| public void onFillable() |
| { |
| ByteBuffer buffer = bufferPool.acquire(bufferSize, false); |
| boolean readMore = read(buffer) == 0; |
| bufferPool.release(buffer); |
| if (readMore) |
| fillInterested(); |
| } |
| |
| protected int read(ByteBuffer buffer) |
| { |
| EndPoint endPoint = getEndPoint(); |
| while (true) |
| { |
| int filled = fill(endPoint, buffer); |
| if (LOG.isDebugEnabled()) // Avoid boxing of variable 'filled' |
| LOG.debug("Read {} bytes", filled); |
| if (filled == 0) |
| { |
| return 0; |
| } |
| else if (filled < 0) |
| { |
| shutdown(session); |
| return -1; |
| } |
| else |
| { |
| parser.parse(buffer); |
| } |
| } |
| } |
| |
| private int fill(EndPoint endPoint, ByteBuffer buffer) |
| { |
| try |
| { |
| if (endPoint.isInputShutdown()) |
| return -1; |
| return endPoint.fill(buffer); |
| } |
| catch (IOException x) |
| { |
| endPoint.close(); |
| throw new RuntimeIOException(x); |
| } |
| } |
| |
| @Override |
| public void write(final Callback callback, ByteBuffer... buffers) |
| { |
| EndPoint endPoint = getEndPoint(); |
| endPoint.write(callback, buffers); |
| } |
| |
| @Override |
| public void close() |
| { |
| goAway(session); |
| } |
| |
| @Override |
| public void close(boolean onlyOutput) |
| { |
| EndPoint endPoint = getEndPoint(); |
| // We need to gently close first, to allow |
| // SSL close alerts to be sent by Jetty |
| if (LOG.isDebugEnabled()) |
| LOG.debug("Shutting down output {}", endPoint); |
| endPoint.shutdownOutput(); |
| if (!onlyOutput) |
| { |
| if (LOG.isDebugEnabled()) |
| LOG.debug("Closing {}", endPoint); |
| endPoint.close(); |
| } |
| } |
| |
| @Override |
| public void onIdle(boolean idle) |
| { |
| this.idle = idle; |
| } |
| |
| @Override |
| protected boolean onReadTimeout() |
| { |
| boolean idle = this.idle; |
| if (LOG.isDebugEnabled()) |
| LOG.debug("Idle timeout on {}, idle={}", this, idle); |
| if (idle) |
| goAway(session); |
| return false; |
| } |
| |
| protected void goAway(ISession session) |
| { |
| if (session != null) |
| session.goAway(new GoAwayInfo(), Callback.Adapter.INSTANCE); |
| } |
| |
| private void shutdown(ISession session) |
| { |
| if (session != null && !getEndPoint().isOutputShutdown()) |
| session.shutdown(); |
| } |
| |
| protected ISession getSession() |
| { |
| return session; |
| } |
| |
| public void setSession(ISession session) |
| { |
| this.session = session; |
| } |
| } |