diff options
Diffstat (limited to 'src/network/access/qhttp2protocolhandler_p.h')
| -rw-r--r-- | src/network/access/qhttp2protocolhandler_p.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/network/access/qhttp2protocolhandler_p.h b/src/network/access/qhttp2protocolhandler_p.h new file mode 100644 index 0000000000..b146e37dd3 --- /dev/null +++ b/src/network/access/qhttp2protocolhandler_p.h @@ -0,0 +1,207 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtNetwork module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QHTTP2PROTOCOLHANDLER_P_H +#define QHTTP2PROTOCOLHANDLER_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of the Network Access API. This header file may change from +// version to version without notice, or even be removed. +// +// We mean it. +// + +#include <private/qhttpnetworkconnectionchannel_p.h> +#include <private/qabstractprotocolhandler_p.h> +#include <private/qhttpnetworkrequest_p.h> + +#if !defined(QT_NO_HTTP) && !defined(QT_NO_SSL) + +#include "http2/http2protocol_p.h" +#include "http2/http2streams_p.h" +#include "http2/http2frames_p.h" +#include "http2/hpacktable_p.h" +#include "http2/hpack_p.h" + +#include <QtCore/qbytearray.h> +#include <QtCore/qglobal.h> +#include <QtCore/qobject.h> +#include <QtCore/qflags.h> +#include <QtCore/qhash.h> + +#include <vector> +#include <limits> +#include <deque> +#include <set> + +QT_BEGIN_NAMESPACE + +class QHttp2ProtocolHandler : public QObject, public QAbstractProtocolHandler +{ + Q_OBJECT + +public: + QHttp2ProtocolHandler(QHttpNetworkConnectionChannel *channel); + + QHttp2ProtocolHandler(const QHttp2ProtocolHandler &rhs) = delete; + QHttp2ProtocolHandler(QHttp2ProtocolHandler &&rhs) = delete; + + QHttp2ProtocolHandler &operator = (const QHttp2ProtocolHandler &rhs) = delete; + QHttp2ProtocolHandler &operator = (QHttp2ProtocolHandler &&rhs) = delete; + +private slots: + void _q_uploadDataReadyRead(); + void _q_replyDestroyed(QObject* reply); + +private: + using Stream = Http2::Stream; + + void _q_readyRead() override; + void _q_receiveReply() override; + Q_INVOKABLE bool sendRequest() override; + + bool sendClientPreface(); + bool sendSETTINGS_ACK(); + bool sendHEADERS(Stream &stream); + bool sendDATA(Stream &stream); + Q_INVOKABLE bool sendWINDOW_UPDATE(quint32 streamID, quint32 delta); + bool sendRST_STREAM(quint32 streamID, quint32 errorCoder); + bool sendGOAWAY(quint32 errorCode); + + void handleDATA(); + void handleHEADERS(); + void handlePRIORITY(); + void handleRST_STREAM(); + void handleSETTINGS(); + void handlePUSH_PROMISE(); + void handlePING(); + void handleGOAWAY(); + void handleWINDOW_UPDATE(); + void handleCONTINUATION(); + + void handleContinuedHEADERS(); + + bool acceptSetting(Http2::Settings identifier, quint32 newValue); + + void updateStream(Stream &stream, const HPack::HttpHeader &headers); + void updateStream(Stream &stream, const Http2::FrameReader &dataFrame); + void finishStream(Stream &stream); + // Error code send by a peer (GOAWAY/RST_STREAM): + void finishStreamWithError(Stream &stream, quint32 errorCode); + // Locally encountered error: + void finishStreamWithError(Stream &stream, QNetworkReply::NetworkError error, + const QString &message); + + // Stream's lifecycle management: + quint32 createNewStream(const HttpMessagePair &message); + void addToSuspended(Stream &stream); + void markAsReset(quint32 streamID); + quint32 popStreamToResume(); + void removeFromSuspended(quint32 streamID); + void deleteActiveStream(quint32 streamID); + bool streamWasReset(quint32 streamID) const; + + bool prefaceSent = false; + // In the current implementation we send + // SETTINGS only once, immediately after + // the client's preface 24-byte message. + bool waitingForSettingsACK = false; + + static const quint32 maxAcceptableTableSize = 16 * HPack::FieldLookupTable::DefaultSize; + // HTTP/2 4.3: Header compression is stateful. One compression context and + // one decompression context are used for the entire connection. + HPack::Decoder decoder; + HPack::Encoder encoder; + + QHash<quint32, Stream> activeStreams; + std::deque<quint32> suspendedStreams[3]; // 3 for priorities: High, Normal, Low. + static const std::deque<quint32>::size_type maxRecycledStreams; + std::deque<quint32> recycledStreams; + + // Peer's max frame size. + quint32 maxFrameSize = Http2::maxFrameSize; + + Http2::FrameReader inboundFrame; + Http2::FrameWriter outboundFrame; + // Temporary storage to assemble HEADERS' block + // from several CONTINUATION frames ... + bool continuationExpected = false; + std::vector<Http2::FrameReader> continuedFrames; + + // Peer's max number of streams ... + quint32 maxConcurrentStreams = Http2::maxConcurrentStreams; + + // Control flow: + static const qint32 sessionMaxRecvWindowSize = Http2::defaultSessionWindowSize * 10; + // Signed integer, it can become negative (it's still a valid window size): + qint32 sessionRecvWindowSize = sessionMaxRecvWindowSize; + + // We do not negotiate this window size + // We have to send WINDOW_UPDATE frames to our peer also. + static const qint32 streamInitialRecvWindowSize = Http2::defaultSessionWindowSize; + + // Updated by SETTINGS and WINDOW_UPDATE. + qint32 sessionSendWindowSize = Http2::defaultSessionWindowSize; + qint32 streamInitialSendWindowSize = Http2::defaultSessionWindowSize; + + // It's unlimited by default, but can be changed via SETTINGS. + quint32 maxHeaderListSize = (std::numeric_limits<quint32>::max)(); + + Q_INVOKABLE void resumeSuspendedStreams(); + // Our stream IDs (all odd), the first valid will be 1. + quint32 nextID = 1; + quint32 allocateStreamID(); + bool validPeerStreamID() const; + bool goingAway = false; + + // Errors: + void connectionError(Http2::Http2Error errorCode, + const char *message); + void closeSession(); +}; + +QT_END_NAMESPACE + +#endif // !defined(QT_NO_HTTP) && !defined(QT_NO_SSL) + +#endif |