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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtNetwork module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qnetworkaccessbackend_p.h"
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#include "qnetworkaccessmanager_p.h"
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#include "qnetworkrequest.h"
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#include "qnetworkreply.h"
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#include "qnetworkreply_p.h"
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#include "QtCore/qhash.h"
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#include "QtCore/qmutex.h"
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#include "qnetworkaccesscachebackend_p.h"
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#include "qabstractnetworkcache.h"
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#include "private/qnoncontiguousbytedevice_p.h"
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QT_BEGIN_NAMESPACE
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static bool factoryDataShutdown = false;
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class QNetworkAccessBackendFactoryData: public QList<QNetworkAccessBackendFactory *>
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{
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public:
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QNetworkAccessBackendFactoryData() : mutex(QMutex::Recursive) { }
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~QNetworkAccessBackendFactoryData()
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{
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QMutexLocker locker(&mutex); // why do we need to lock?
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factoryDataShutdown = true;
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}
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QMutex mutex;
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};
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Q_GLOBAL_STATIC(QNetworkAccessBackendFactoryData, factoryData)
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QNetworkAccessBackendFactory::QNetworkAccessBackendFactory()
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{
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QMutexLocker locker(&factoryData()->mutex);
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factoryData()->prepend(this);
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}
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QNetworkAccessBackendFactory::~QNetworkAccessBackendFactory()
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{
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if (!factoryDataShutdown) {
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QMutexLocker locker(&factoryData()->mutex);
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factoryData()->removeAll(this);
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}
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}
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QNetworkAccessBackend *QNetworkAccessManagerPrivate::findBackend(QNetworkAccessManager::Operation op,
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const QNetworkRequest &request)
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{
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QNetworkRequest::CacheLoadControl mode =
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static_cast<QNetworkRequest::CacheLoadControl>(
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request.attribute(QNetworkRequest::CacheLoadControlAttribute,
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QNetworkRequest::PreferNetwork).toInt());
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if (mode == QNetworkRequest::AlwaysCache
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&& (op == QNetworkAccessManager::GetOperation
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|| op == QNetworkAccessManager::HeadOperation)) {
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QNetworkAccessBackend *backend = new QNetworkAccessCacheBackend;
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backend->manager = this;
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return backend;
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}
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if (!factoryDataShutdown) {
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QMutexLocker locker(&factoryData()->mutex);
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QNetworkAccessBackendFactoryData::ConstIterator it = factoryData()->constBegin(),
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end = factoryData()->constEnd();
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while (it != end) {
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QNetworkAccessBackend *backend = (*it)->create(op, request);
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if (backend) {
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backend->manager = this;
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return backend; // found a factory that handled our request
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}
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++it;
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}
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}
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return 0;
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}
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QNonContiguousByteDevice* QNetworkAccessBackend::createUploadByteDevice()
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{
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QNonContiguousByteDevice* device = 0;
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if (reply->outgoingDataBuffer)
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device = QNonContiguousByteDeviceFactory::create(reply->outgoingDataBuffer);
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else
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device = QNonContiguousByteDeviceFactory::create(reply->outgoingData);
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bool bufferDisallowed =
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reply->request.attribute(QNetworkRequest::DoNotBufferUploadDataAttribute,
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QVariant(false)) == QVariant(true);
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if (bufferDisallowed)
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device->disableReset();
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// make sure we delete this later
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device->setParent(this);
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connect(device, SIGNAL(readProgress(qint64,qint64)), this, SLOT(emitReplyUploadProgress(qint64,qint64)));
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return device;
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}
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// need to have this function since the reply is a private member variable
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// and the special backends need to access this.
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void QNetworkAccessBackend::emitReplyUploadProgress(qint64 bytesSent, qint64 bytesTotal)
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{
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reply->emitUploadProgress(bytesSent, bytesTotal);
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}
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QNetworkAccessBackend::QNetworkAccessBackend()
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: manager(0)
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, reply(0)
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{
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}
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QNetworkAccessBackend::~QNetworkAccessBackend()
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{
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}
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void QNetworkAccessBackend::downstreamReadyWrite()
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{
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// do nothing
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}
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void QNetworkAccessBackend::copyFinished(QIODevice *)
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{
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// do nothing
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}
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void QNetworkAccessBackend::ignoreSslErrors()
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{
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// do nothing
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}
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void QNetworkAccessBackend::ignoreSslErrors(const QList<QSslError> &errors)
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{
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Q_UNUSED(errors);
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// do nothing
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}
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void QNetworkAccessBackend::fetchSslConfiguration(QSslConfiguration &) const
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{
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// do nothing
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}
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void QNetworkAccessBackend::setSslConfiguration(const QSslConfiguration &)
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{
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// do nothing
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}
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QNetworkCacheMetaData QNetworkAccessBackend::fetchCacheMetaData(const QNetworkCacheMetaData &) const
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{
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return QNetworkCacheMetaData();
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}
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QNetworkAccessManager::Operation QNetworkAccessBackend::operation() const
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{
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return reply->operation;
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}
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QNetworkRequest QNetworkAccessBackend::request() const
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{
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return reply->request;
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}
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#ifndef QT_NO_NETWORKPROXY
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QList<QNetworkProxy> QNetworkAccessBackend::proxyList() const
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{
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return reply->proxyList;
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}
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#endif
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QAbstractNetworkCache *QNetworkAccessBackend::networkCache() const
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{
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if (!manager)
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return 0;
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return manager->networkCache;
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}
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void QNetworkAccessBackend::setCachingEnabled(bool enable)
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{
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reply->setCachingEnabled(enable);
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}
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bool QNetworkAccessBackend::isCachingEnabled() const
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{
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return reply->isCachingEnabled();
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}
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qint64 QNetworkAccessBackend::nextDownstreamBlockSize() const
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{
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return reply->nextDownstreamBlockSize();
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}
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void QNetworkAccessBackend::writeDownstreamData(QByteDataBuffer &list)
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{
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reply->appendDownstreamData(list);
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}
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void QNetworkAccessBackend::writeDownstreamData(QIODevice *data)
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{
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reply->appendDownstreamData(data);
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}
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QVariant QNetworkAccessBackend::header(QNetworkRequest::KnownHeaders header) const
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{
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return reply->q_func()->header(header);
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}
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void QNetworkAccessBackend::setHeader(QNetworkRequest::KnownHeaders header, const QVariant &value)
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{
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reply->setCookedHeader(header, value);
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}
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bool QNetworkAccessBackend::hasRawHeader(const QByteArray &headerName) const
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{
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return reply->q_func()->hasRawHeader(headerName);
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}
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QByteArray QNetworkAccessBackend::rawHeader(const QByteArray &headerName) const
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{
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return reply->q_func()->rawHeader(headerName);
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}
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QList<QByteArray> QNetworkAccessBackend::rawHeaderList() const
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{
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return reply->q_func()->rawHeaderList();
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}
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void QNetworkAccessBackend::setRawHeader(const QByteArray &headerName, const QByteArray &headerValue)
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{
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reply->setRawHeader(headerName, headerValue);
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}
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QVariant QNetworkAccessBackend::attribute(QNetworkRequest::Attribute code) const
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{
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return reply->q_func()->attribute(code);
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}
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void QNetworkAccessBackend::setAttribute(QNetworkRequest::Attribute code, const QVariant &value)
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{
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if (value.isValid())
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reply->attributes.insert(code, value);
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else
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reply->attributes.remove(code);
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}
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QUrl QNetworkAccessBackend::url() const
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{
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return reply->url;
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}
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void QNetworkAccessBackend::setUrl(const QUrl &url)
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{
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reply->url = url;
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}
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void QNetworkAccessBackend::finished()
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{
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reply->finished();
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}
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void QNetworkAccessBackend::error(QNetworkReply::NetworkError code, const QString &errorString)
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{
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reply->error(code, errorString);
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}
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#ifndef QT_NO_NETWORKPROXY
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void QNetworkAccessBackend::proxyAuthenticationRequired(const QNetworkProxy &proxy,
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QAuthenticator *authenticator)
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{
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manager->proxyAuthenticationRequired(this, proxy, authenticator);
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}
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#endif
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void QNetworkAccessBackend::authenticationRequired(QAuthenticator *authenticator)
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{
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manager->authenticationRequired(this, authenticator);
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}
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void QNetworkAccessBackend::metaDataChanged()
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{
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reply->metaDataChanged();
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}
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void QNetworkAccessBackend::redirectionRequested(const QUrl &target)
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{
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reply->redirectionRequested(target);
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}
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void QNetworkAccessBackend::sslErrors(const QList<QSslError> &errors)
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{
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#ifndef QT_NO_OPENSSL
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reply->sslErrors(errors);
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#else
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Q_UNUSED(errors);
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#endif
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}
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QT_END_NAMESPACE
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