| // |
| // ======================================================================== |
| // 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.http2.client.http; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayDeque; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Queue; |
| import java.util.function.BiFunction; |
| |
| import org.eclipse.jetty.client.HttpChannel; |
| import org.eclipse.jetty.client.HttpExchange; |
| import org.eclipse.jetty.client.HttpReceiver; |
| import org.eclipse.jetty.client.HttpRequest; |
| import org.eclipse.jetty.client.HttpResponse; |
| import org.eclipse.jetty.client.api.Request; |
| import org.eclipse.jetty.client.api.Response; |
| import org.eclipse.jetty.http.HttpField; |
| import org.eclipse.jetty.http.HttpFields; |
| import org.eclipse.jetty.http.HttpStatus; |
| import org.eclipse.jetty.http.MetaData; |
| import org.eclipse.jetty.http2.ErrorCode; |
| import org.eclipse.jetty.http2.api.Stream; |
| import org.eclipse.jetty.http2.frames.DataFrame; |
| import org.eclipse.jetty.http2.frames.HeadersFrame; |
| import org.eclipse.jetty.http2.frames.PushPromiseFrame; |
| import org.eclipse.jetty.http2.frames.ResetFrame; |
| import org.eclipse.jetty.io.ByteBufferPool; |
| import org.eclipse.jetty.util.BufferUtil; |
| import org.eclipse.jetty.util.Callback; |
| import org.eclipse.jetty.util.IteratingCallback; |
| |
| public class HttpReceiverOverHTTP2 extends HttpReceiver implements Stream.Listener |
| { |
| private final ContentNotifier contentNotifier = new ContentNotifier(); |
| |
| public HttpReceiverOverHTTP2(HttpChannel channel) |
| { |
| super(channel); |
| } |
| |
| @Override |
| protected HttpChannelOverHTTP2 getHttpChannel() |
| { |
| return (HttpChannelOverHTTP2)super.getHttpChannel(); |
| } |
| |
| @Override |
| public void onHeaders(Stream stream, HeadersFrame frame) |
| { |
| HttpExchange exchange = getHttpExchange(); |
| if (exchange == null) |
| return; |
| |
| HttpResponse response = exchange.getResponse(); |
| MetaData.Response metaData = (MetaData.Response)frame.getMetaData(); |
| response.version(metaData.getHttpVersion()).status(metaData.getStatus()).reason(metaData.getReason()); |
| |
| if (responseBegin(exchange)) |
| { |
| HttpFields headers = metaData.getFields(); |
| for (HttpField header : headers) |
| { |
| if (!responseHeader(exchange, header)) |
| return; |
| } |
| |
| if (responseHeaders(exchange)) |
| { |
| int status = metaData.getStatus(); |
| boolean informational = HttpStatus.isInformational(status) && status != HttpStatus.SWITCHING_PROTOCOLS_101; |
| if (frame.isEndStream() || informational) |
| responseSuccess(exchange); |
| } |
| } |
| } |
| |
| @Override |
| public Stream.Listener onPush(Stream stream, PushPromiseFrame frame) |
| { |
| HttpExchange exchange = getHttpExchange(); |
| if (exchange == null) |
| return null; |
| |
| HttpRequest request = exchange.getRequest(); |
| MetaData.Request metaData = (MetaData.Request)frame.getMetaData(); |
| HttpRequest pushRequest = (HttpRequest)getHttpDestination().getHttpClient().newRequest(metaData.getURIString()); |
| |
| BiFunction<Request, Request, Response.CompleteListener> pushListener = request.getPushListener(); |
| if (pushListener != null) |
| { |
| Response.CompleteListener listener = pushListener.apply(request, pushRequest); |
| if (listener != null) |
| { |
| HttpChannelOverHTTP2 pushChannel = getHttpChannel().getHttpConnection().newHttpChannel(true); |
| List<Response.ResponseListener> listeners = Collections.singletonList(listener); |
| HttpExchange pushExchange = new HttpExchange(getHttpDestination(), pushRequest, listeners); |
| pushChannel.associate(pushExchange); |
| pushChannel.setStream(stream); |
| // TODO: idle timeout ? |
| pushExchange.requestComplete(null); |
| pushExchange.terminateRequest(); |
| return pushChannel.getStreamListener(); |
| } |
| } |
| |
| stream.reset(new ResetFrame(stream.getId(), ErrorCode.REFUSED_STREAM_ERROR.code), Callback.NOOP); |
| return null; |
| } |
| |
| @Override |
| public void onData(Stream stream, DataFrame frame, Callback callback) |
| { |
| HttpExchange exchange = getHttpExchange(); |
| if (exchange == null) |
| { |
| callback.failed(new IOException("terminated")); |
| return; |
| } |
| |
| // We must copy the data since we do not know when the |
| // application will consume the bytes and the parsing |
| // will continue as soon as this method returns, eventually |
| // leading to reusing the underlying buffer for more reads. |
| ByteBufferPool byteBufferPool = getHttpDestination().getHttpClient().getByteBufferPool(); |
| ByteBuffer original = frame.getData(); |
| int length = original.remaining(); |
| final ByteBuffer copy = byteBufferPool.acquire(length, original.isDirect()); |
| BufferUtil.clearToFill(copy); |
| copy.put(original); |
| BufferUtil.flipToFlush(copy, 0); |
| |
| contentNotifier.offer(new DataInfo(exchange, copy, callback, frame.isEndStream())); |
| contentNotifier.iterate(); |
| } |
| |
| @Override |
| public void onReset(Stream stream, ResetFrame frame) |
| { |
| HttpExchange exchange = getHttpExchange(); |
| if (exchange == null) |
| return; |
| |
| ErrorCode error = ErrorCode.from(frame.getError()); |
| String reason = error == null ? "reset" : error.name().toLowerCase(Locale.ENGLISH); |
| exchange.getRequest().abort(new IOException(reason)); |
| } |
| |
| @Override |
| public boolean onIdleTimeout(Stream stream, Throwable x) |
| { |
| responseFailure(x); |
| return true; |
| } |
| |
| private class ContentNotifier extends IteratingCallback |
| { |
| private final Queue<DataInfo> queue = new ArrayDeque<>(); |
| private DataInfo dataInfo; |
| |
| private boolean offer(DataInfo dataInfo) |
| { |
| synchronized (this) |
| { |
| return queue.offer(dataInfo); |
| } |
| } |
| |
| @Override |
| protected Action process() throws Exception |
| { |
| DataInfo dataInfo; |
| synchronized (this) |
| { |
| dataInfo = queue.poll(); |
| } |
| |
| if (dataInfo == null) |
| { |
| DataInfo prevDataInfo = this.dataInfo; |
| if (prevDataInfo != null && prevDataInfo.last) |
| return Action.SUCCEEDED; |
| return Action.IDLE; |
| } |
| |
| this.dataInfo = dataInfo; |
| responseContent(dataInfo.exchange, dataInfo.buffer, this); |
| return Action.SCHEDULED; |
| } |
| |
| @Override |
| public void succeeded() |
| { |
| ByteBufferPool byteBufferPool = getHttpDestination().getHttpClient().getByteBufferPool(); |
| byteBufferPool.release(dataInfo.buffer); |
| dataInfo.callback.succeeded(); |
| super.succeeded(); |
| } |
| |
| @Override |
| protected void onCompleteSuccess() |
| { |
| responseSuccess(dataInfo.exchange); |
| } |
| |
| @Override |
| protected void onCompleteFailure(Throwable failure) |
| { |
| ByteBufferPool byteBufferPool = getHttpDestination().getHttpClient().getByteBufferPool(); |
| byteBufferPool.release(dataInfo.buffer); |
| dataInfo.callback.failed(failure); |
| responseFailure(failure); |
| } |
| } |
| |
| private static class DataInfo |
| { |
| private final HttpExchange exchange; |
| private final ByteBuffer buffer; |
| private final Callback callback; |
| private final boolean last; |
| |
| private DataInfo(HttpExchange exchange, ByteBuffer buffer, Callback callback, boolean last) |
| { |
| this.exchange = exchange; |
| this.buffer = buffer; |
| this.callback = callback; |
| this.last = last; |
| } |
| } |
| } |