1	// Copyright (C) 2016 The Qt Company Ltd.
2	// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4	//#define QNETWORKACCESSHTTPBACKEND_DEBUG
5
6	#include "qnetworkreplyhttpimpl_p.h"
7	#include "qnetworkaccessmanager_p.h"
8	#include "qnetworkaccesscache_p.h"
9	#include "qabstractnetworkcache.h"
10	#include "qnetworkrequest.h"
11	#include "qnetworkreply.h"
12	#include "qnetworkrequest_p.h"
13	#include "qnetworkcookie.h"
14	#include "qnetworkcookie_p.h"
15	#include "QtCore/qdatetime.h"
16	#include "QtCore/qelapsedtimer.h"
17	#include "QtNetwork/qsslconfiguration.h"
18	#include "qhttpthreaddelegate_p.h"
19	#include "qhsts_p.h"
20	#include "qthread.h"
21	#include "QtCore/qcoreapplication.h"
22
23	#include <QtCore/private/qthread_p.h>
24	#include <QtCore/private/qtools_p.h>
25
26	#include "qnetworkcookiejar.h"
27	#include "qnetconmonitor_p.h"
28
29	#include "qnetworkreplyimpl_p.h"
30
31	#include <string.h> // for strchr
32
33	QT_BEGIN_NAMESPACE
34
35	using namespace Qt::StringLiterals;
36	using namespace QtMiscUtils;
37	using namespace std::chrono_literals;
38
39	class QNetworkProxy;
40
41	static inline QByteArray rangeName() { return "Range"_ba; }
42	static inline QByteArray cacheControlName() { return "Cache-Control"_ba; }
43	static constexpr QByteArrayView bytesEqualPrefix() noexcept { return "bytes="; }
44
45	// ### merge with nextField in cookiejar.cpp
46	static QHash<QByteArray, QByteArray> parseHttpOptionHeader(QByteArrayView header)
47	{
48	// The HTTP header is of the form:
49	// header = #1(directives)
50	// directives = token | value-directive
51	// value-directive = token "=" (token | quoted-string)
52	QHash<QByteArray, QByteArray> result;
53
54	int pos = 0;
55	while (true) {
56	// skip spaces
57	pos = nextNonWhitespace(text: header, from: pos);
58	if (pos == header.size())
59	return result; // end of parsing
60
61	// pos points to a non-whitespace
62	int comma = header.indexOf(ch: ',', from: pos);
63	int equal = header.indexOf(ch: '=', from: pos);
64	if (comma == pos || equal == pos)
65	// huh? Broken header.
66	return result;
67
68	// The key name is delimited by either a comma, an equal sign or the end
69	// of the header, whichever comes first
70	int end = comma;
71	if (end == -1)
72	end = header.size();
73	if (equal != -1 && end > equal)
74	end = equal; // equal sign comes before comma/end
75	const auto key = header.sliced(pos, n: end - pos).trimmed();
76	pos = end + 1;
77
78	if (uint(equal) < uint(comma)) {
79	// case: token "=" (token | quoted-string)
80	// skip spaces
81	pos = nextNonWhitespace(text: header, from: pos);
82	if (pos == header.size())
83	// huh? Broken header
84	return result;
85
86	QByteArray value;
87	value.reserve(asize: header.size() - pos);
88	if (header.at(n: pos) == '"') {
89	// case: quoted-string
90	// quoted-string = ( <"> *(qdtext | quoted-pair ) <"> )
91	// qdtext = <any TEXT except <">>
92	// quoted-pair = "\" CHAR
93	++pos;
94	while (pos < header.size()) {
95	char c = header.at(n: pos);
96	if (c == '"') {
97	// end of quoted text
98	break;
99	} else if (c == '\\') {
100	++pos;
101	if (pos >= header.size())
102	// broken header
103	return result;
104	c = header.at(n: pos);
105	}
106
107	value += c;
108	++pos;
109	}
110	} else {
111	const auto isSeparator = [](char c) {
112	static const char separators[] = "()<>@,;:\\\"/[]?={}";
113	return isLWS(c) || strchr(s: separators, c: c) != nullptr;
114	};
115
116	// case: token
117	while (pos < header.size()) {
118	char c = header.at(n: pos);
119	if (isSeparator(c))
120	break;
121	value += c;
122	++pos;
123	}
124	}
125
126	result.insert(key: key.toByteArray().toLower(), value);
127
128	// find the comma now:
129	comma = header.indexOf(ch: ',', from: pos);
130	if (comma == -1)
131	return result; // end of parsing
132	pos = comma + 1;
133	} else {
134	// case: token
135	// key is already set
136	result.insert(key: key.toByteArray().toLower(), value: QByteArray());
137	}
138	}
139	}
140
141	QNetworkReplyHttpImpl::QNetworkReplyHttpImpl(QNetworkAccessManager* const manager,
142	const QNetworkRequest& request,
143	QNetworkAccessManager::Operation& operation,
144	QIODevice* outgoingData)
145	: QNetworkReply(*new QNetworkReplyHttpImplPrivate, manager)
146	{
147	Q_D(QNetworkReplyHttpImpl);
148	Q_ASSERT(manager);
149	d->manager = manager;
150	d->managerPrivate = manager->d_func();
151	d->request = request;
152	d->originalRequest = request;
153	d->operation = operation;
154	d->outgoingData = outgoingData;
155	d->url = request.url();
156	#ifndef QT_NO_SSL
157	if (request.url().scheme() == "https"_L1)
158	d->sslConfiguration.reset(other: new QSslConfiguration(request.sslConfiguration()));
159	#endif
160
161	QObjectPrivate::connect(sender: this, signal: &QNetworkReplyHttpImpl::redirectAllowed, receiverPrivate: d,
162	slot: &QNetworkReplyHttpImplPrivate::followRedirect, type: Qt::QueuedConnection);
163
164	// FIXME Later maybe set to Unbuffered, especially if it is zerocopy or from cache?
165	QIODevice::open(mode: QIODevice::ReadOnly);
166
167
168	// Internal code that does a HTTP reply for the synchronous Ajax
169	// in Qt WebKit.
170	QVariant synchronousHttpAttribute = request.attribute(
171	code: static_cast<QNetworkRequest::Attribute>(QNetworkRequest::SynchronousRequestAttribute));
172	if (synchronousHttpAttribute.isValid()) {
173	d->synchronous = synchronousHttpAttribute.toBool();
174	if (d->synchronous && outgoingData) {
175	// The synchronous HTTP is a corner case, we will put all upload data in one big QByteArray in the outgoingDataBuffer.
176	// Yes, this is not the most efficient thing to do, but on the other hand synchronous XHR needs to die anyway.
177	d->outgoingDataBuffer = std::make_shared<QRingBuffer>();
178	qint64 previousDataSize = 0;
179	do {
180	previousDataSize = d->outgoingDataBuffer->size();
181	d->outgoingDataBuffer->append(qba: d->outgoingData->readAll());
182	} while (d->outgoingDataBuffer->size() != previousDataSize);
183	d->_q_startOperation();
184	return;
185	}
186	}
187
188
189	if (outgoingData) {
190	// there is data to be uploaded, e.g. HTTP POST.
191
192	if (!d->outgoingData->isSequential()) {
193	// fixed size non-sequential (random-access)
194	// just start the operation
195	QMetaObject::invokeMethod(obj: this, member: "_q_startOperation", c: Qt::QueuedConnection);
196	// FIXME make direct call?
197	} else {
198	bool bufferingDisallowed =
199	request.attribute(code: QNetworkRequest::DoNotBufferUploadDataAttribute,
200	defaultValue: false).toBool();
201
202	if (bufferingDisallowed) {
203	// if a valid content-length header for the request was supplied, we can disable buffering
204	// if not, we will buffer anyway
205
206	const auto sizeOpt = QNetworkHeadersPrivate::toInt(
207	value: request.headers().value(name: QHttpHeaders::WellKnownHeader::ContentLength));
208	if (sizeOpt) {
209	QMetaObject::invokeMethod(obj: this, member: "_q_startOperation", c: Qt::QueuedConnection);
210	// FIXME make direct call?
211	} else {
212	d->state = d->Buffering;
213	QMetaObject::invokeMethod(obj: this, member: "_q_bufferOutgoingData", c: Qt::QueuedConnection);
214	}
215	} else {
216	// _q_startOperation will be called when the buffering has finished.
217	d->state = d->Buffering;
218	QMetaObject::invokeMethod(obj: this, member: "_q_bufferOutgoingData", c: Qt::QueuedConnection);
219	}
220	}
221	} else {
222	// No outgoing data (POST, ..)
223	d->_q_startOperation();
224	}
225	}
226
227	QNetworkReplyHttpImpl::~QNetworkReplyHttpImpl()
228	{
229	// This will do nothing if the request was already finished or aborted
230	emit abortHttpRequest();
231	}
232
233	void QNetworkReplyHttpImpl::close()
234	{
235	Q_D(QNetworkReplyHttpImpl);
236
237	if (d->state == QNetworkReplyPrivate::Aborted ||
238	d->state == QNetworkReplyPrivate::Finished)
239	return;
240
241	// According to the documentation close only stops the download
242	// by closing we can ignore the download part and continue uploading.
243	QNetworkReply::close();
244
245	// call finished which will emit signals
246	// FIXME shouldn't this be emitted Queued?
247	d->error(code: OperationCanceledError, errorString: tr(s: "Operation canceled"));
248	d->finished();
249	}
250
251	void QNetworkReplyHttpImpl::abort()
252	{
253	Q_D(QNetworkReplyHttpImpl);
254	// FIXME
255	if (d->state == QNetworkReplyPrivate::Finished || d->state == QNetworkReplyPrivate::Aborted)
256	return;
257
258	QNetworkReply::close();
259
260	if (d->state != QNetworkReplyPrivate::Finished) {
261	// call finished which will emit signals
262	// FIXME shouldn't this be emitted Queued?
263	d->error(code: OperationCanceledError, errorString: tr(s: "Operation canceled"));
264	d->finished();
265	}
266
267	d->state = QNetworkReplyPrivate::Aborted;
268
269	emit abortHttpRequest();
270	}
271
272	qint64 QNetworkReplyHttpImpl::bytesAvailable() const
273	{
274	Q_D(const QNetworkReplyHttpImpl);
275
276	// if we load from cache device
277	if (d->cacheLoadDevice) {
278	return QNetworkReply::bytesAvailable() + d->cacheLoadDevice->bytesAvailable();
279	}
280
281	// zerocopy buffer
282	if (d->downloadZerocopyBuffer) {
283	return QNetworkReply::bytesAvailable() + d->downloadBufferCurrentSize - d->downloadBufferReadPosition;
284	}
285
286	if (d->decompressHelper.isValid()) {
287	if (d->decompressHelper.isCountingBytes())
288	return QNetworkReply::bytesAvailable() + d->decompressHelper.uncompressedSize();
289	if (d->decompressHelper.hasData())
290	return QNetworkReply::bytesAvailable() + 1;
291	}
292
293	// normal buffer
294	return QNetworkReply::bytesAvailable();
295	}
296
297	bool QNetworkReplyHttpImpl::isSequential () const
298	{
299	// FIXME In the cache of a cached load or the zero-copy buffer we could actually be non-sequential.
300	// FIXME however this requires us to implement stuff like seek() too.
301	return true;
302	}
303
304	qint64 QNetworkReplyHttpImpl::size() const
305	{
306	// FIXME At some point, this could return a proper value, e.g. if we're non-sequential.
307	return QNetworkReply::size();
308	}
309
310	qint64 QNetworkReplyHttpImpl::readData(char* data, qint64 maxlen)
311	{
312	Q_D(QNetworkReplyHttpImpl);
313
314	// cacheload device
315	if (d->cacheLoadDevice) {
316	// FIXME bytesdownloaded, position etc?
317
318	qint64 ret = d->cacheLoadDevice->read(data, maxlen);
319	return ret;
320	}
321
322	// zerocopy buffer
323	if (d->downloadZerocopyBuffer) {
324	// FIXME bytesdownloaded, position etc?
325
326	qint64 howMuch = qMin(a: maxlen, b: (d->downloadBufferCurrentSize - d->downloadBufferReadPosition));
327	memcpy(dest: data, src: d->downloadZerocopyBuffer + d->downloadBufferReadPosition, n: howMuch);
328	d->downloadBufferReadPosition += howMuch;
329	return howMuch;
330
331	}
332
333	if (d->decompressHelper.isValid() && (d->decompressHelper.hasData() || !isFinished())) {
334	if (maxlen == 0 || !d->decompressHelper.hasData())
335	return 0;
336	const qint64 bytesRead = d->decompressHelper.read(data, maxSize: maxlen);
337	if (!d->decompressHelper.isValid()) {
338	d->error(code: QNetworkReplyImpl::NetworkError::UnknownContentError,
339	errorString: QCoreApplication::translate(context: "QHttp", key: "Decompression failed: %1")
340	.arg(a: d->decompressHelper.errorString()));
341	d->decompressHelper.clear();
342	return -1;
343	}
344	if (d->cacheSaveDevice) {
345	// Need to write to the cache now that we have the data
346	d->cacheSaveDevice->write(data, len: bytesRead);
347	// ... and if we've read everything then the cache can be closed.
348	if (isFinished() && !d->decompressHelper.hasData())
349	d->completeCacheSave();
350	}
351	// In case of buffer size restriction we need to emit that it has been emptied
352	qint64 wasBuffered = d->bytesBuffered;
353	d->bytesBuffered = 0;
354	if (readBufferSize())
355	emit readBufferFreed(size: wasBuffered);
356	return bytesRead;
357	}
358
359	// normal buffer
360	if (d->state == d->Finished || d->state == d->Aborted)
361	return -1;
362
363	qint64 wasBuffered = d->bytesBuffered;
364	d->bytesBuffered = 0;
365	if (readBufferSize())
366	emit readBufferFreed(size: wasBuffered);
367	return 0;
368	}
369
370	void QNetworkReplyHttpImpl::setReadBufferSize(qint64 size)
371	{
372	QNetworkReply::setReadBufferSize(size);
373	emit readBufferSizeChanged(size);
374	return;
375	}
376
377	bool QNetworkReplyHttpImpl::canReadLine () const
378	{
379	Q_D(const QNetworkReplyHttpImpl);
380
381	if (QNetworkReply::canReadLine())
382	return true;
383
384	if (d->cacheLoadDevice)
385	return d->cacheLoadDevice->canReadLine();
386
387	if (d->downloadZerocopyBuffer)
388	return memchr(s: d->downloadZerocopyBuffer + d->downloadBufferReadPosition, c: '\n', n: d->downloadBufferCurrentSize - d->downloadBufferReadPosition);
389
390	return false;
391	}
392
393	#ifndef QT_NO_SSL
394	void QNetworkReplyHttpImpl::ignoreSslErrors()
395	{
396	Q_D(QNetworkReplyHttpImpl);
397	Q_ASSERT(d->managerPrivate);
398
399	if (d->managerPrivate->stsEnabled && d->managerPrivate->stsCache.isKnownHost(url: url())) {
400	// We cannot ignore any Security Transport-related errors for this host.
401	return;
402	}
403
404	d->pendingIgnoreAllSslErrors = true;
405	}
406
407	void QNetworkReplyHttpImpl::ignoreSslErrorsImplementation(const QList<QSslError> &errors)
408	{
409	Q_D(QNetworkReplyHttpImpl);
410	Q_ASSERT(d->managerPrivate);
411
412	if (d->managerPrivate->stsEnabled && d->managerPrivate->stsCache.isKnownHost(url: url())) {
413	// We cannot ignore any Security Transport-related errors for this host.
414	return;
415	}
416
417	// the pending list is set if QNetworkReply::ignoreSslErrors(const QList<QSslError> &errors)
418	// is called before QNetworkAccessManager::get() (or post(), etc.)
419	d->pendingIgnoreSslErrorsList = errors;
420	}
421
422	void QNetworkReplyHttpImpl::setSslConfigurationImplementation(const QSslConfiguration &newconfig)
423	{
424	// Setting a SSL configuration on a reply is not supported. The user needs to set
425	// her/his QSslConfiguration on the QNetworkRequest.
426	Q_UNUSED(newconfig);
427	}
428
429	void QNetworkReplyHttpImpl::sslConfigurationImplementation(QSslConfiguration &configuration) const
430	{
431	Q_D(const QNetworkReplyHttpImpl);
432	if (d->sslConfiguration.data())
433	configuration = *d->sslConfiguration;
434	else
435	configuration = request().sslConfiguration();
436	}
437	#endif
438
439	QNetworkReplyHttpImplPrivate::QNetworkReplyHttpImplPrivate()
440	: QNetworkReplyPrivate()
441	, manager(nullptr)
442	, managerPrivate(nullptr)
443	, synchronous(false)
444	, state(Idle)
445	, statusCode(0)
446	, uploadByteDevicePosition(false)
447	, uploadDeviceChoking(false)
448	, outgoingData(nullptr)
449	, bytesUploaded(-1)
450	, cacheLoadDevice(nullptr)
451	, loadingFromCache(false)
452	, cacheSaveDevice(nullptr)
453	, cacheEnabled(false)
454	, resumeOffset(0)
455	, bytesDownloaded(0)
456	, bytesBuffered(0)
457	, transferTimeout(nullptr)
458	, downloadBufferReadPosition(0)
459	, downloadBufferCurrentSize(0)
460	, downloadZerocopyBuffer(nullptr)
461	, pendingDownloadDataEmissions(std::make_shared<QAtomicInt>())
462	, pendingDownloadProgressEmissions(std::make_shared<QAtomicInt>())
463	#ifndef QT_NO_SSL
464	, pendingIgnoreAllSslErrors(false)
465	#endif
466
467	{
468	}
469
470	QNetworkReplyHttpImplPrivate::~QNetworkReplyHttpImplPrivate()
471	{
472	}
473
474	/*
475	For a given httpRequest
476	1) If AlwaysNetwork, return
477	2) If we have a cache entry for this url populate headers so the server can return 304
478	3) Calculate if response_is_fresh and if so send the cache and set loadedFromCache to true
479	*/
480	bool QNetworkReplyHttpImplPrivate::loadFromCacheIfAllowed(QHttpNetworkRequest &httpRequest)
481	{
482	QNetworkRequest::CacheLoadControl CacheLoadControlAttribute =
483	(QNetworkRequest::CacheLoadControl)request.attribute(code: QNetworkRequest::CacheLoadControlAttribute, defaultValue: QNetworkRequest::PreferNetwork).toInt();
484
485	auto requestHeaders = request.headers();
486	if (CacheLoadControlAttribute == QNetworkRequest::AlwaysNetwork) {
487	// If the request does not already specify preferred cache-control
488	// force reload from the network and tell any caching proxy servers to reload too
489	if (!requestHeaders.contains(name: QHttpHeaders::WellKnownHeader::CacheControl)) {
490	const auto noCache = "no-cache"_ba;
491	httpRequest.setHeaderField(name: cacheControlName(), data: noCache);
492	httpRequest.setHeaderField(name: "Pragma"_ba, data: noCache);
493	}
494	return false;
495	}
496
497	// The disk cache API does not currently support partial content retrieval.
498	// That is why we don't use the disk cache for any such requests.
499	if (requestHeaders.contains(name: QHttpHeaders::WellKnownHeader::Range))
500	return false;
501
502	QAbstractNetworkCache *nc = managerPrivate->networkCache;
503	if (!nc)
504	return false; // no local cache
505
506	QNetworkCacheMetaData metaData = nc->metaData(url: httpRequest.url());
507	if (!metaData.isValid())
508	return false; // not in cache
509
510	if (!metaData.saveToDisk())
511	return false;
512
513	QHttpHeaders cacheHeaders = metaData.headers();
514
515	const auto sizeOpt = QNetworkHeadersPrivate::toInt(
516	value: cacheHeaders.value(name: QHttpHeaders::WellKnownHeader::ContentLength));
517	if (sizeOpt) {
518	std::unique_ptr<QIODevice> data(nc->data(url: httpRequest.url()));
519	if (!data || data->size() < sizeOpt.value())
520	return false; // The data is smaller than the content-length specified
521	}
522
523	auto value = cacheHeaders.value(name: QHttpHeaders::WellKnownHeader::ETag);
524	if (!value.empty())
525	httpRequest.setHeaderField(name: "If-None-Match"_ba, data: value.toByteArray());
526
527	QDateTime lastModified = metaData.lastModified();
528	if (lastModified.isValid())
529	httpRequest.setHeaderField(name: "If-Modified-Since"_ba, data: QNetworkHeadersPrivate::toHttpDate(dt: lastModified));
530
531	value = cacheHeaders.value(name: QHttpHeaders::WellKnownHeader::CacheControl);
532	if (!value.empty()) {
533	QHash<QByteArray, QByteArray> cacheControl = parseHttpOptionHeader(header: value);
534	if (cacheControl.contains(key: "no-cache"_ba))
535	return false;
536	}
537
538	QDateTime currentDateTime = QDateTime::currentDateTimeUtc();
539	QDateTime expirationDate = metaData.expirationDate();
540
541	bool response_is_fresh;
542	if (!expirationDate.isValid()) {
543	/*
544	* age_value
545	* is the value of Age: header received by the cache with
546	* this response.
547	* date_value
548	* is the value of the origin server's Date: header
549	* request_time
550	* is the (local) time when the cache made the request
551	* that resulted in this cached response
552	* response_time
553	* is the (local) time when the cache received the
554	* response
555	* now
556	* is the current (local) time
557	*/
558	const auto ageOpt = QNetworkHeadersPrivate::toInt(
559	value: cacheHeaders.value(name: QHttpHeaders::WellKnownHeader::Age));
560	const qint64 age_value = ageOpt.value_or(u: 0);
561
562	QDateTime dateHeader;
563	qint64 date_value = 0;
564	value = cacheHeaders.value(name: QHttpHeaders::WellKnownHeader::Date);
565	if (!value.empty()) {
566	dateHeader = QNetworkHeadersPrivate::fromHttpDate(value);
567	date_value = dateHeader.toSecsSinceEpoch();
568	}
569
570	qint64 now = currentDateTime.toSecsSinceEpoch();
571	qint64 request_time = now;
572	qint64 response_time = now;
573
574	// Algorithm from RFC 2616 section 13.2.3
575	qint64 apparent_age = qMax<qint64>(a: 0, b: response_time - date_value);
576	qint64 corrected_received_age = qMax(a: apparent_age, b: age_value);
577	qint64 response_delay = response_time - request_time;
578	qint64 corrected_initial_age = corrected_received_age + response_delay;
579	qint64 resident_time = now - response_time;
580	qint64 current_age = corrected_initial_age + resident_time;
581
582	qint64 freshness_lifetime = 0;
583
584	// RFC 2616 13.2.4 Expiration Calculations
585	if (lastModified.isValid() && dateHeader.isValid()) {
586	qint64 diff = lastModified.secsTo(dateHeader);
587	freshness_lifetime = diff / 10;
588	const auto warningHeader = "Warning"_ba;
589	if (httpRequest.headerField(name: warningHeader).isEmpty()) {
590	QDateTime dt = currentDateTime.addSecs(secs: current_age);
591	if (currentDateTime.daysTo(dt) > 1)
592	httpRequest.setHeaderField(name: warningHeader, data: "113"_ba);
593	}
594	}
595
596	// the cache-saving code below sets the freshness_lifetime with (dateHeader - last_modified) / 10
597	// if "last-modified" is present, or to Expires otherwise
598	response_is_fresh = (freshness_lifetime > current_age);
599	} else {
600	// expiration date was calculated earlier (e.g. when storing object to the cache)
601	response_is_fresh = currentDateTime.secsTo(expirationDate) >= 0;
602	}
603
604	if (!response_is_fresh)
605	return false;
606
607	#if defined(QNETWORKACCESSHTTPBACKEND_DEBUG)
608	qDebug() << "response_is_fresh" << CacheLoadControlAttribute;
609	#endif
610	return sendCacheContents(metaData);
611	}
612
613	QHttpNetworkRequest::Priority QNetworkReplyHttpImplPrivate::convert(QNetworkRequest::Priority prio)
614	{
615	switch (prio) {
616	case QNetworkRequest::LowPriority:
617	return QHttpNetworkRequest::LowPriority;
618	case QNetworkRequest::HighPriority:
619	return QHttpNetworkRequest::HighPriority;
620	case QNetworkRequest::NormalPriority:
621	return QHttpNetworkRequest::NormalPriority;
622	}
623	Q_UNREACHABLE_RETURN(QHttpNetworkRequest::NormalPriority);
624	}
625
626	void QNetworkReplyHttpImplPrivate::postRequest(const QNetworkRequest &newHttpRequest)
627	{
628	Q_Q(QNetworkReplyHttpImpl);
629
630	QThread *thread = nullptr;
631	if (synchronous) {
632	// A synchronous HTTP request uses its own thread
633	thread = new QThread();
634	thread->setObjectName(QStringLiteral("Qt HTTP synchronous thread"));
635	QObject::connect(sender: thread, SIGNAL(finished()), receiver: thread, SLOT(deleteLater()));
636	thread->start();
637	} else {
638	// We use the manager-global thread.
639	// At some point we could switch to having multiple threads if it makes sense.
640	thread = managerPrivate->createThread();
641	}
642
643	QUrl url = newHttpRequest.url();
644	httpRequest.setUrl(url);
645	httpRequest.setRedirectCount(newHttpRequest.maximumRedirectsAllowed());
646
647	QString scheme = url.scheme();
648	bool ssl = (scheme == "https"_L1 || scheme == "preconnect-https"_L1);
649	q->setAttribute(code: QNetworkRequest::ConnectionEncryptedAttribute, value: ssl);
650	httpRequest.setSsl(ssl);
651
652	bool preConnect = (scheme == "preconnect-http"_L1 || scheme == "preconnect-https"_L1);
653	httpRequest.setPreConnect(preConnect);
654
655	#ifndef QT_NO_NETWORKPROXY
656	QNetworkProxy transparentProxy, cacheProxy;
657
658	// FIXME the proxy stuff should be done in the HTTP thread
659	const auto proxies = managerPrivate->queryProxy(query: QNetworkProxyQuery(newHttpRequest.url()));
660	for (const QNetworkProxy &p : proxies) {
661	// use the first proxy that works
662	// for non-encrypted connections, any transparent or HTTP proxy
663	// for encrypted, only transparent proxies
664	if (!ssl
665	&& (p.capabilities() & QNetworkProxy::CachingCapability)
666	&& (p.type() == QNetworkProxy::HttpProxy ||
667	p.type() == QNetworkProxy::HttpCachingProxy)) {
668	cacheProxy = p;
669	transparentProxy = QNetworkProxy::NoProxy;
670	break;
671	}
672	if (p.isTransparentProxy()) {
673	transparentProxy = p;
674	cacheProxy = QNetworkProxy::NoProxy;
675	break;
676	}
677	}
678
679	// check if at least one of the proxies
680	if (transparentProxy.type() == QNetworkProxy::DefaultProxy &&
681	cacheProxy.type() == QNetworkProxy::DefaultProxy) {
682	// unsuitable proxies
683	QMetaObject::invokeMethod(obj: q, member: "_q_error", c: synchronous ? Qt::DirectConnection : Qt::QueuedConnection,
684	Q_ARG(QNetworkReply::NetworkError, QNetworkReply::ProxyNotFoundError),
685	Q_ARG(QString, QNetworkReplyHttpImpl::tr("No suitable proxy found")));
686	QMetaObject::invokeMethod(obj: q, member: "_q_finished", c: synchronous ? Qt::DirectConnection : Qt::QueuedConnection);
687	return;
688	}
689	#endif
690
691	auto redirectPolicy = QNetworkRequest::NoLessSafeRedirectPolicy;
692	const QVariant value = newHttpRequest.attribute(code: QNetworkRequest::RedirectPolicyAttribute);
693	if (value.isValid())
694	redirectPolicy = qvariant_cast<QNetworkRequest::RedirectPolicy>(v: value);
695
696	httpRequest.setRedirectPolicy(redirectPolicy);
697
698	httpRequest.setPriority(convert(prio: newHttpRequest.priority()));
699	loadingFromCache = false;
700
701	switch (operation) {
702	case QNetworkAccessManager::GetOperation:
703	httpRequest.setOperation(QHttpNetworkRequest::Get);
704	// If the request has a body, createUploadByteDevice() and don't use caching
705	if (outgoingData) {
706	invalidateCache();
707	createUploadByteDevice();
708	} else if (loadFromCacheIfAllowed(httpRequest)) {
709	return; // no need to send the request! :)
710	}
711	break;
712
713	case QNetworkAccessManager::HeadOperation:
714	httpRequest.setOperation(QHttpNetworkRequest::Head);
715	if (loadFromCacheIfAllowed(httpRequest))
716	return; // no need to send the request! :)
717	break;
718
719	case QNetworkAccessManager::PostOperation:
720	invalidateCache();
721	httpRequest.setOperation(QHttpNetworkRequest::Post);
722	createUploadByteDevice();
723	break;
724
725	case QNetworkAccessManager::PutOperation:
726	invalidateCache();
727	httpRequest.setOperation(QHttpNetworkRequest::Put);
728	createUploadByteDevice();
729	break;
730
731	case QNetworkAccessManager::DeleteOperation:
732	invalidateCache();
733	httpRequest.setOperation(QHttpNetworkRequest::Delete);
734	break;
735
736	case QNetworkAccessManager::CustomOperation:
737	invalidateCache(); // for safety reasons, we don't know what the operation does
738	httpRequest.setOperation(QHttpNetworkRequest::Custom);
739	createUploadByteDevice();
740	httpRequest.setCustomVerb(newHttpRequest.attribute(
741	code: QNetworkRequest::CustomVerbAttribute).toByteArray());
742	break;
743
744	default:
745	break; // can't happen
746	}
747
748	QHttpHeaders newRequestHeaders = newHttpRequest.headers();
749	if (resumeOffset != 0) {
750	if (newRequestHeaders.contains(name: QHttpHeaders::WellKnownHeader::Range)) {
751	// Need to adjust resume offset for user specified range
752
753	// We've already verified that requestRange starts with "bytes=", see canResume.
754	const auto rangeHeader = newRequestHeaders.value(name: QHttpHeaders::WellKnownHeader::Range);
755	const auto requestRange = QByteArrayView(rangeHeader).mid(pos: bytesEqualPrefix().size());
756
757	newRequestHeaders.removeAll(name: QHttpHeaders::WellKnownHeader::Range);
758
759	int index = requestRange.indexOf(ch: '-');
760
761	quint64 requestStartOffset = requestRange.left(n: index).toULongLong();
762	quint64 requestEndOffset = requestRange.mid(pos: index + 1).toULongLong();
763
764	// In case an end offset is not given it is skipped from the request range
765	QByteArray newRange = bytesEqualPrefix() + QByteArray::number(resumeOffset + requestStartOffset) +
766	'-' + (requestEndOffset ? QByteArray::number(requestEndOffset) : QByteArray());
767
768	httpRequest.setHeaderField(name: rangeName(), data: newRange);
769	} else {
770	httpRequest.setHeaderField(name: rangeName(), data: bytesEqualPrefix() + QByteArray::number(resumeOffset) + '-');
771	}
772	}
773
774	for (int i = 0; i < newRequestHeaders.size(); i++) {
775	const auto name = newRequestHeaders.nameAt(i);
776	const auto value = newRequestHeaders.valueAt(i);
777	httpRequest.setHeaderField(name: QByteArray(name.data(), name.size()), data: value.toByteArray());
778	}
779
780	if (newHttpRequest.attribute(code: QNetworkRequest::HttpPipeliningAllowedAttribute).toBool())
781	httpRequest.setPipeliningAllowed(true);
782
783	if (auto allowed = request.attribute(code: QNetworkRequest::Http2AllowedAttribute);
784	allowed.isValid() && allowed.canConvert<bool>()) {
785	httpRequest.setHTTP2Allowed(allowed.value<bool>());
786	}
787	auto h2cAttribute = request.attribute(code: QNetworkRequest::Http2CleartextAllowedAttribute);
788	// ### Qt7: Stop checking the environment variable
789	if (h2cAttribute.toBool()
790	|| (!h2cAttribute.isValid() && qEnvironmentVariableIsSet(varName: "QT_NETWORK_H2C_ALLOWED"))) {
791	httpRequest.setH2cAllowed(true);
792	}
793
794	if (request.attribute(code: QNetworkRequest::Http2DirectAttribute).toBool()) {
795	// Intentionally mutually exclusive - cannot be both direct and 'allowed'
796	httpRequest.setHTTP2Direct(true);
797	httpRequest.setHTTP2Allowed(false);
798	}
799
800	if (static_cast<QNetworkRequest::LoadControl>
801	(newHttpRequest.attribute(code: QNetworkRequest::AuthenticationReuseAttribute,
802	defaultValue: QNetworkRequest::Automatic).toInt()) == QNetworkRequest::Manual)
803	httpRequest.setWithCredentials(false);
804
805	if (request.attribute(code: QNetworkRequest::EmitAllUploadProgressSignalsAttribute).toBool())
806	emitAllUploadProgressSignals = true;
807
808	httpRequest.setPeerVerifyName(newHttpRequest.peerVerifyName());
809
810	if (scheme.startsWith(s: ("unix"_L1))) {
811	if (QVariant path = newHttpRequest.attribute(code: QNetworkRequest::FullLocalServerNameAttribute);
812	path.isValid() && path.canConvert<QString>()) {
813	httpRequest.setFullLocalServerName(path.toString());
814	}
815	}
816
817	// Create the HTTP thread delegate
818	QHttpThreadDelegate *delegate = new QHttpThreadDelegate;
819	// Propagate Http/2 settings:
820	delegate->http2Parameters = request.http2Configuration();
821	delegate->http1Parameters = request.http1Configuration();
822
823	if (request.attribute(code: QNetworkRequest::ConnectionCacheExpiryTimeoutSecondsAttribute).isValid())
824	delegate->connectionCacheExpiryTimeoutSeconds = request.attribute(code: QNetworkRequest::ConnectionCacheExpiryTimeoutSecondsAttribute).toInt();
825
826	// For the synchronous HTTP, this is the normal way the delegate gets deleted
827	// For the asynchronous HTTP this is a safety measure, the delegate deletes itself when HTTP is finished
828	QMetaObject::Connection threadFinishedConnection =
829	QObject::connect(sender: thread, SIGNAL(finished()), receiver: delegate, SLOT(deleteLater()));
830
831	// QTBUG-88063: When 'delegate' is deleted the connection will be added to 'thread''s orphaned
832	// connections list. This orphaned list will be cleaned up next time 'thread' emits a signal,
833	// unfortunately that's the finished signal. It leads to a soft-leak so we do this to disconnect
834	// it on deletion so that it cleans up the orphan immediately.
835	QObject::connect(sender: delegate, signal: &QObject::destroyed, context: delegate, slot: [threadFinishedConnection]() {
836	if (bool(threadFinishedConnection))
837	QObject::disconnect(threadFinishedConnection);
838	});
839
840	// Set the properties it needs
841	delegate->httpRequest = httpRequest;
842	#ifndef QT_NO_NETWORKPROXY
843	delegate->cacheProxy = cacheProxy;
844	delegate->transparentProxy = transparentProxy;
845	#endif
846	delegate->ssl = ssl;
847	#ifndef QT_NO_SSL
848	if (ssl)
849	delegate->incomingSslConfiguration.reset(other: new QSslConfiguration(newHttpRequest.sslConfiguration()));
850	#endif
851
852	// Do we use synchronous HTTP?
853	delegate->synchronous = synchronous;
854
855	// The authentication manager is used to avoid the BlockingQueuedConnection communication
856	// from HTTP thread to user thread in some cases.
857	delegate->authenticationManager = managerPrivate->authenticationManager;
858
859	if (!synchronous) {
860	// Tell our zerocopy policy to the delegate
861	QVariant downloadBufferMaximumSizeAttribute = newHttpRequest.attribute(code: QNetworkRequest::MaximumDownloadBufferSizeAttribute);
862	if (downloadBufferMaximumSizeAttribute.isValid()) {
863	delegate->downloadBufferMaximumSize = downloadBufferMaximumSizeAttribute.toLongLong();
864	} else {
865	// If there is no MaximumDownloadBufferSizeAttribute set (which is for the majority
866	// of QNetworkRequest) then we can assume we'll do it anyway for small HTTP replies.
867	// This helps with performance and memory fragmentation.
868	delegate->downloadBufferMaximumSize = 128*1024;
869	}
870
871
872	// These atomic integers are used for signal compression
873	delegate->pendingDownloadData = pendingDownloadDataEmissions;
874	delegate->pendingDownloadProgress = pendingDownloadProgressEmissions;
875
876	// Connect the signals of the delegate to us
877	QObject::connect(sender: delegate, SIGNAL(downloadData(QByteArray)),
878	receiver: q, SLOT(replyDownloadData(QByteArray)),
879	Qt::QueuedConnection);
880	QObject::connect(sender: delegate, SIGNAL(downloadFinished()),
881	receiver: q, SLOT(replyFinished()),
882	Qt::QueuedConnection);
883	QObject::connect(sender: delegate, signal: &QHttpThreadDelegate::socketStartedConnecting,
884	context: q, slot: &QNetworkReply::socketStartedConnecting, type: Qt::QueuedConnection);
885	QObject::connect(sender: delegate, signal: &QHttpThreadDelegate::requestSent,
886	context: q, slot: &QNetworkReply::requestSent, type: Qt::QueuedConnection);
887	connect(sender: delegate, signal: &QHttpThreadDelegate::downloadMetaData, receiverPrivate: this,
888	slot: &QNetworkReplyHttpImplPrivate::replyDownloadMetaData, type: Qt::QueuedConnection);
889	QObject::connect(sender: delegate, SIGNAL(downloadProgress(qint64,qint64)),
890	receiver: q, SLOT(replyDownloadProgressSlot(qint64,qint64)),
891	Qt::QueuedConnection);
892	QObject::connect(sender: delegate, SIGNAL(error(QNetworkReply::NetworkError,QString)),
893	receiver: q, SLOT(httpError(QNetworkReply::NetworkError,QString)),
894	Qt::QueuedConnection);
895	QObject::connect(sender: delegate, SIGNAL(redirected(QUrl,int,int)),
896	receiver: q, SLOT(onRedirected(QUrl,int,int)),
897	Qt::QueuedConnection);
898
899	#ifndef QT_NO_SSL
900	QObject::connect(sender: delegate, SIGNAL(sslConfigurationChanged(QSslConfiguration)),
901	receiver: q, SLOT(replySslConfigurationChanged(QSslConfiguration)),
902	Qt::QueuedConnection);
903	#endif
904	// Those need to report back, therefore BlockingQueuedConnection
905	QObject::connect(sender: delegate, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)),
906	receiver: q, SLOT(httpAuthenticationRequired(QHttpNetworkRequest,QAuthenticator*)),
907	Qt::BlockingQueuedConnection);
908	#ifndef QT_NO_NETWORKPROXY
909	QObject::connect(sender: delegate, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
910	receiver: q, SLOT(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
911	Qt::BlockingQueuedConnection);
912	#endif
913	#ifndef QT_NO_SSL
914	QObject::connect(sender: delegate, SIGNAL(encrypted()), receiver: q, SLOT(replyEncrypted()),
915	Qt::BlockingQueuedConnection);
916	QObject::connect(sender: delegate, SIGNAL(sslErrors(QList<QSslError>,bool*,QList<QSslError>*)),
917	receiver: q, SLOT(replySslErrors(QList<QSslError>,bool*,QList<QSslError>*)),
918	Qt::BlockingQueuedConnection);
919	QObject::connect(sender: delegate, SIGNAL(preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator*)),
920	receiver: q, SLOT(replyPreSharedKeyAuthenticationRequiredSlot(QSslPreSharedKeyAuthenticator*)),
921	Qt::BlockingQueuedConnection);
922	#endif
923	// This signal we will use to start the request.
924	QObject::connect(sender: q, SIGNAL(startHttpRequest()), receiver: delegate, SLOT(startRequest()));
925	QObject::connect(sender: q, SIGNAL(abortHttpRequest()), receiver: delegate, SLOT(abortRequest()));
926
927	// To throttle the connection.
928	QObject::connect(sender: q, SIGNAL(readBufferSizeChanged(qint64)), receiver: delegate, SLOT(readBufferSizeChanged(qint64)));
929	QObject::connect(sender: q, SIGNAL(readBufferFreed(qint64)), receiver: delegate, SLOT(readBufferFreed(qint64)));
930
931	if (uploadByteDevice) {
932	QNonContiguousByteDeviceThreadForwardImpl *forwardUploadDevice =
933	new QNonContiguousByteDeviceThreadForwardImpl(uploadByteDevice->atEnd(), uploadByteDevice->size());
934	forwardUploadDevice->setParent(delegate); // needed to make sure it is moved on moveToThread()
935	delegate->httpRequest.setUploadByteDevice(forwardUploadDevice);
936
937	// If the device in the user thread claims it has more data, keep the flow to HTTP thread going
938	QObject::connect(sender: uploadByteDevice.get(), SIGNAL(readyRead()),
939	receiver: q, SLOT(uploadByteDeviceReadyReadSlot()),
940	Qt::QueuedConnection);
941
942	// From user thread to http thread:
943	QObject::connect(sender: q, SIGNAL(haveUploadData(qint64,QByteArray,bool,qint64)),
944	receiver: forwardUploadDevice, SLOT(haveDataSlot(qint64,QByteArray,bool,qint64)), Qt::QueuedConnection);
945	QObject::connect(sender: uploadByteDevice.get(), SIGNAL(readyRead()),
946	receiver: forwardUploadDevice, SIGNAL(readyRead()),
947	Qt::QueuedConnection);
948
949	// From http thread to user thread:
950	QObject::connect(sender: forwardUploadDevice, SIGNAL(wantData(qint64)),
951	receiver: q, SLOT(wantUploadDataSlot(qint64)));
952	QObject::connect(sender: forwardUploadDevice,SIGNAL(processedData(qint64,qint64)),
953	receiver: q, SLOT(sentUploadDataSlot(qint64,qint64)));
954	QObject::connect(sender: forwardUploadDevice, SIGNAL(resetData(bool*)),
955	receiver: q, SLOT(resetUploadDataSlot(bool*)),
956	Qt::BlockingQueuedConnection); // this is the only one with BlockingQueued!
957	}
958	} else if (synchronous) {
959	QObject::connect(sender: q, SIGNAL(startHttpRequestSynchronously()), receiver: delegate, SLOT(startRequestSynchronously()), Qt::BlockingQueuedConnection);
960
961	if (uploadByteDevice) {
962	// For the synchronous HTTP use case the use thread (this one here) is blocked
963	// so we cannot use the asynchronous upload architecture.
964	// We therefore won't use the QNonContiguousByteDeviceThreadForwardImpl but directly
965	// use the uploadByteDevice provided to us by the QNetworkReplyImpl.
966	// The code that is in start() makes sure it is safe to use from a thread
967	// since it only wraps a QRingBuffer
968	delegate->httpRequest.setUploadByteDevice(uploadByteDevice.get());
969	}
970	}
971
972
973	// Move the delegate to the http thread
974	delegate->moveToThread(thread);
975	// This call automatically moves the uploadDevice too for the asynchronous case.
976
977	// Prepare timers for progress notifications
978	downloadProgressSignalChoke.start();
979	uploadProgressSignalChoke.invalidate();
980
981	// Send an signal to the delegate so it starts working in the other thread
982	if (synchronous) {
983	emit q->startHttpRequestSynchronously(); // This one is BlockingQueuedConnection, so it will return when all work is done
984
985	replyDownloadMetaData
986	(delegate->incomingHeaders,
987	delegate->incomingStatusCode,
988	delegate->incomingReasonPhrase,
989	delegate->isPipeliningUsed,
990	QSharedPointer<char>(),
991	delegate->incomingContentLength,
992	delegate->removedContentLength,
993	delegate->isHttp2Used,
994	delegate->isCompressed);
995	replyDownloadData(delegate->synchronousDownloadData);
996
997	if (delegate->incomingErrorCode != QNetworkReply::NoError)
998	httpError(error: delegate->incomingErrorCode, errorString: delegate->incomingErrorDetail);
999
1000	thread->quit();
1001	thread->wait(deadline: QDeadlineTimer(5000));
1002	if (thread->isFinished())
1003	delete thread;
1004	else
1005	QObject::connect(sender: thread, SIGNAL(finished()), receiver: thread, SLOT(deleteLater()));
1006
1007	finished();
1008	} else {
1009	emit q->startHttpRequest(); // Signal to the HTTP thread and go back to user.
1010	}
1011	}
1012
1013	void QNetworkReplyHttpImplPrivate::invalidateCache()
1014	{
1015	QAbstractNetworkCache *nc = managerPrivate->networkCache;
1016	if (nc)
1017	nc->remove(url: httpRequest.url());
1018	}
1019
1020	void QNetworkReplyHttpImplPrivate::initCacheSaveDevice()
1021	{
1022	Q_Q(QNetworkReplyHttpImpl);
1023
1024	// The disk cache does not support partial content, so don't even try to
1025	// save any such content into the cache.
1026	if (q->attribute(code: QNetworkRequest::HttpStatusCodeAttribute).toInt() == 206) {
1027	cacheEnabled = false;
1028	return;
1029	}
1030
1031	// save the meta data
1032	QNetworkCacheMetaData metaData;
1033	metaData.setUrl(url);
1034	metaData = fetchCacheMetaData(metaData);
1035
1036	// save the redirect request also in the cache
1037	QVariant redirectionTarget = q->attribute(code: QNetworkRequest::RedirectionTargetAttribute);
1038	if (redirectionTarget.isValid()) {
1039	QNetworkCacheMetaData::AttributesMap attributes = metaData.attributes();
1040	attributes.insert(key: QNetworkRequest::RedirectionTargetAttribute, value: redirectionTarget);
1041	metaData.setAttributes(attributes);
1042	}
1043
1044	cacheSaveDevice = managerPrivate->networkCache->prepare(metaData);
1045
1046	if (cacheSaveDevice)
1047	q->connect(asender: cacheSaveDevice, SIGNAL(aboutToClose()), SLOT(_q_cacheSaveDeviceAboutToClose()));
1048
1049	if (!cacheSaveDevice || (cacheSaveDevice && !cacheSaveDevice->isOpen())) {
1050	if (Q_UNLIKELY(cacheSaveDevice && !cacheSaveDevice->isOpen()))
1051	qCritical(msg: "QNetworkReplyImpl: network cache returned a device that is not open -- "
1052	"class %s probably needs to be fixed",
1053	managerPrivate->networkCache->metaObject()->className());
1054
1055	managerPrivate->networkCache->remove(url);
1056	cacheSaveDevice = nullptr;
1057	cacheEnabled = false;
1058	}
1059	}
1060
1061	void QNetworkReplyHttpImplPrivate::replyDownloadData(QByteArray d)
1062	{
1063	Q_Q(QNetworkReplyHttpImpl);
1064
1065	// If we're closed just ignore this data
1066	if (!q->isOpen())
1067	return;
1068
1069	// cache this, we need it later and it's invalidated when dealing with compressed data
1070	auto dataSize = d.size();
1071
1072	if (cacheEnabled && isCachingAllowed() && !cacheSaveDevice)
1073	initCacheSaveDevice();
1074
1075	if (decompressHelper.isValid()) {
1076	qint64 uncompressedBefore = -1;
1077	if (decompressHelper.isCountingBytes())
1078	uncompressedBefore = decompressHelper.uncompressedSize();
1079
1080	decompressHelper.feed(data: std::move(d));
1081
1082	if (!decompressHelper.isValid()) {
1083	error(code: QNetworkReplyImpl::NetworkError::UnknownContentError,
1084	errorString: QCoreApplication::translate(context: "QHttp", key: "Decompression failed: %1")
1085	.arg(a: decompressHelper.errorString()));
1086	decompressHelper.clear();
1087	return;
1088	}
1089
1090	if (!isHttpRedirectResponse()) {
1091	if (decompressHelper.isCountingBytes())
1092	bytesDownloaded += (decompressHelper.uncompressedSize() - uncompressedBefore);
1093	setupTransferTimeout();
1094	}
1095
1096	if (synchronous) {
1097	d = QByteArray();
1098	const qsizetype increments = 16 * 1024;
1099	qint64 bytesRead = 0;
1100	while (decompressHelper.hasData()) {
1101	quint64 nextSize = quint64(d.size()) + quint64(increments);
1102	if (nextSize > quint64(std::numeric_limits<QByteArray::size_type>::max())) {
1103	error(code: QNetworkReplyImpl::NetworkError::UnknownContentError,
1104	errorString: QCoreApplication::translate(context: "QHttp",
1105	key: "Data downloaded is too large to store"));
1106	decompressHelper.clear();
1107	return;
1108	}
1109	d.resize(size: nextSize);
1110	bytesRead += decompressHelper.read(data: d.data() + bytesRead, maxSize: increments);
1111	if (!decompressHelper.isValid()) {
1112	error(code: QNetworkReplyImpl::NetworkError::UnknownContentError,
1113	errorString: QCoreApplication::translate(context: "QHttp", key: "Decompression failed: %1")
1114	.arg(a: decompressHelper.errorString()));
1115	decompressHelper.clear();
1116	return;
1117	}
1118	}
1119	d.resize(size: bytesRead);
1120	// we're synchronous so we're not calling this function again; reset the decompressHelper
1121	decompressHelper.clear();
1122	}
1123	}
1124
1125	// This is going to look a little strange. When downloading data while a
1126	// HTTP redirect is happening (and enabled), we write the redirect
1127	// response to the cache. However, we do not append it to our internal
1128	// buffer as that will contain the response data only for the final
1129	// response
1130	// Note: For compressed data this is done in readData()
1131	if (cacheSaveDevice && !decompressHelper.isValid()) {
1132	cacheSaveDevice->write(data: d);
1133	}
1134
1135	// if decompressHelper is valid then we have compressed data, and this is handled above
1136	if (!decompressHelper.isValid() && !isHttpRedirectResponse()) {
1137	buffer.append(qba: d);
1138	bytesDownloaded += dataSize;
1139	setupTransferTimeout();
1140	}
1141	bytesBuffered += dataSize;
1142
1143	int pendingSignals = pendingDownloadDataEmissions->fetchAndSubAcquire(valueToAdd: 1) - 1;
1144	if (pendingSignals > 0) {
1145	// Some more signal emissions to this slot are pending.
1146	// Instead of writing the downstream data, we wait
1147	// and do it in the next call we get
1148	// (signal comppression)
1149	return;
1150	}
1151
1152	if (isHttpRedirectResponse())
1153	return;
1154
1155	// This can occur when downloading compressed data as some of the data may be the content
1156	// encoding's header. Don't emit anything for this.
1157	if (lastReadyReadEmittedSize == bytesDownloaded) {
1158	if (readBufferMaxSize)
1159	emit q->readBufferFreed(size: dataSize);
1160	return;
1161	}
1162	lastReadyReadEmittedSize = bytesDownloaded;
1163
1164	const auto totalSizeOpt = QNetworkHeadersPrivate::toInt(
1165	value: headers().value(name: QHttpHeaders::WellKnownHeader::ContentLength));
1166
1167	emit q->readyRead();
1168	// emit readyRead before downloadProgress in case this will cause events to be
1169	// processed and we get into a recursive call (as in QProgressDialog).
1170	if (downloadProgressSignalChoke.elapsed() >= progressSignalInterval
1171	&& (!decompressHelper.isValid() || decompressHelper.isCountingBytes())) {
1172	downloadProgressSignalChoke.restart();
1173	emit q->downloadProgress(bytesReceived: bytesDownloaded, bytesTotal: totalSizeOpt.value_or(u: -1));
1174	}
1175	}
1176
1177	void QNetworkReplyHttpImplPrivate::replyFinished()
1178	{
1179	// We are already loading from cache, we still however
1180	// got this signal because it was posted already
1181	if (loadingFromCache)
1182	return;
1183
1184	finished();
1185	}
1186
1187	QNetworkAccessManager::Operation QNetworkReplyHttpImplPrivate::getRedirectOperation(QNetworkAccessManager::Operation currentOp, int httpStatus)
1188	{
1189	// HTTP status code can be used to decide if we can redirect with a GET
1190	// operation or not. See http://www.ietf.org/rfc/rfc2616.txt [Sec 10.3] for
1191	// more details
1192
1193	// We MUST keep using the verb that was used originally when being redirected with 307 or 308.
1194	if (httpStatus == 307 || httpStatus == 308)
1195	return currentOp;
1196
1197	switch (currentOp) {
1198	case QNetworkAccessManager::HeadOperation:
1199	return QNetworkAccessManager::HeadOperation;
1200	default:
1201	break;
1202	}
1203	// Use GET for everything else.
1204	return QNetworkAccessManager::GetOperation;
1205	}
1206
1207	bool QNetworkReplyHttpImplPrivate::isHttpRedirectResponse() const
1208	{
1209	return httpRequest.isFollowRedirects() && QHttpNetworkReply::isHttpRedirect(statusCode);
1210	}
1211
1212	QNetworkRequest QNetworkReplyHttpImplPrivate::createRedirectRequest(const QNetworkRequest &originalRequest,
1213	const QUrl &url,
1214	int maxRedirectsRemaining)
1215	{
1216	QNetworkRequest newRequest(originalRequest);
1217	newRequest.setUrl(url);
1218	newRequest.setMaximumRedirectsAllowed(maxRedirectsRemaining);
1219
1220	return newRequest;
1221	}
1222
1223	void QNetworkReplyHttpImplPrivate::onRedirected(const QUrl &redirectUrl, int httpStatus, int maxRedirectsRemaining)
1224	{
1225	Q_Q(QNetworkReplyHttpImpl);
1226	Q_ASSERT(manager);
1227	Q_ASSERT(managerPrivate);
1228
1229	if (isFinished)
1230	return;
1231
1232	const QString schemeBefore(url.scheme());
1233	if (httpRequest.isFollowRedirects()) // update the reply's url as it could've changed
1234	url = redirectUrl;
1235
1236	const bool wasLocalSocket = schemeBefore.startsWith(s: "unix"_L1);
1237	if (!wasLocalSocket && managerPrivate->stsEnabled && managerPrivate->stsCache.isKnownHost(url)) {
1238	// RFC6797, 8.3:
1239	// The UA MUST replace the URI scheme with "https" [RFC2818],
1240	// and if the URI contains an explicit port component of "80",
1241	// then the UA MUST convert the port component to be "443", or
1242	// if the URI contains an explicit port component that is not
1243	// equal to "80", the port component value MUST be preserved;
1244	// otherwise, if the URI does not contain an explicit port
1245	// component, the UA MUST NOT add one.
1246	url.setScheme("https"_L1);
1247	if (url.port() == 80)
1248	url.setPort(443);
1249	}
1250
1251	// Just to be on the safe side for local sockets, any changes to the scheme
1252	// are considered less safe
1253	const bool changingLocalScheme = wasLocalSocket && url.scheme() != schemeBefore;
1254	const bool isLessSafe = changingLocalScheme
1255	|| (schemeBefore == "https"_L1 && url.scheme() == "http"_L1);
1256	if (httpRequest.redirectPolicy() == QNetworkRequest::NoLessSafeRedirectPolicy && isLessSafe) {
1257	error(code: QNetworkReply::InsecureRedirectError,
1258	errorString: QCoreApplication::translate(context: "QHttp", key: "Insecure redirect"));
1259	return;
1260	}
1261
1262	// If the original operation was a GET with a body and the status code is
1263	// 308 then keep the message body
1264	const bool getOperationKeepsBody = (operation == QNetworkAccessManager::GetOperation)
1265	&& httpStatus == 308;
1266
1267	redirectRequest = createRedirectRequest(originalRequest, url, maxRedirectsRemaining);
1268	operation = getRedirectOperation(currentOp: operation, httpStatus);
1269
1270	// Clear stale headers, the relevant ones get set again later
1271	httpRequest.clearHeaders();
1272	auto newHeaders = redirectRequest.headers();
1273	if ((operation == QNetworkAccessManager::GetOperation
1274	|| operation == QNetworkAccessManager::HeadOperation) && !getOperationKeepsBody) {
1275	// possibly changed from not-GET/HEAD to GET/HEAD, make sure to get rid of upload device
1276	uploadByteDevice.reset();
1277	uploadByteDevicePosition = 0;
1278	if (outgoingData) {
1279	QObject::disconnect(sender: outgoingData, SIGNAL(readyRead()), receiver: q,
1280	SLOT(_q_bufferOutgoingData()));
1281	QObject::disconnect(sender: outgoingData, SIGNAL(readChannelFinished()), receiver: q,
1282	SLOT(_q_bufferOutgoingDataFinished()));
1283	}
1284	outgoingData = nullptr;
1285	outgoingDataBuffer.reset();
1286	// We need to explicitly unset these headers so they're not reapplied to the httpRequest
1287	newHeaders.removeAll(name: QHttpHeaders::WellKnownHeader::ContentLength);
1288	newHeaders.removeAll(name: QHttpHeaders::WellKnownHeader::ContentType);
1289	}
1290
1291	if (const QNetworkCookieJar *const cookieJar = manager->cookieJar()) {
1292	auto cookies = cookieJar->cookiesForUrl(url);
1293	if (!cookies.empty()) {
1294	auto cookieHeader = QNetworkHeadersPrivate::fromCookieList(cookies);
1295	newHeaders.replaceOrAppend(name: QHttpHeaders::WellKnownHeader::Cookie, newValue: cookieHeader);
1296	}
1297	}
1298
1299	redirectRequest.setHeaders(std::move(newHeaders));
1300
1301	if (httpRequest.redirectPolicy() != QNetworkRequest::UserVerifiedRedirectPolicy)
1302	followRedirect();
1303
1304	emit q->redirected(url);
1305	}
1306
1307	void QNetworkReplyHttpImplPrivate::followRedirect()
1308	{
1309	Q_Q(QNetworkReplyHttpImpl);
1310	Q_ASSERT(managerPrivate);
1311
1312	decompressHelper.clear();
1313	clearHeaders();
1314
1315	if (managerPrivate->thread)
1316	managerPrivate->thread->disconnect();
1317
1318	QMetaObject::invokeMethod(
1319	object: q, function: [this]() { postRequest(newHttpRequest: redirectRequest); }, type: Qt::QueuedConnection);
1320	}
1321
1322	static constexpr QLatin1StringView locationHeader() noexcept { return "location"_L1; }
1323
1324	void QNetworkReplyHttpImplPrivate::checkForRedirect(const int statusCode)
1325	{
1326	Q_Q(QNetworkReplyHttpImpl);
1327	switch (statusCode) {
1328	case 301: // Moved Permanently
1329	case 302: // Found
1330	case 303: // See Other
1331	case 307: // Temporary Redirect
1332	case 308: // Permanent Redirect
1333	// What do we do about the caching of the HTML note?
1334	// The response to a 303 MUST NOT be cached, while the response to
1335	// all of the others is cacheable if the headers indicate it to be
1336	QByteArrayView header = q->headers().value(name: locationHeader());
1337	QUrl url = QUrl(QString::fromUtf8(utf8: header));
1338	if (!url.isValid())
1339	url = QUrl(QLatin1StringView(header));
1340	q->setAttribute(code: QNetworkRequest::RedirectionTargetAttribute, value: url);
1341	}
1342	}
1343
1344	void QNetworkReplyHttpImplPrivate::replyDownloadMetaData(const QHttpHeaders &hm,
1345	int sc, const QString &rp, bool pu,
1346	QSharedPointer<char> db,
1347	qint64 contentLength,
1348	qint64 removedContentLength,
1349	bool h2Used, bool isCompressed)
1350	{
1351	Q_Q(QNetworkReplyHttpImpl);
1352	Q_UNUSED(contentLength);
1353
1354	statusCode = sc;
1355	reasonPhrase = rp;
1356
1357	#ifndef QT_NO_SSL
1358	// We parse this header only if we're using secure transport:
1359	//
1360	// RFC6797, 8.1
1361	// If an HTTP response is received over insecure transport, the UA MUST
1362	// ignore any present STS header field(s).
1363	if (url.scheme() == "https"_L1 && managerPrivate->stsEnabled)
1364	managerPrivate->stsCache.updateFromHeaders(headers: hm, url);
1365	#endif
1366	// Download buffer
1367	if (!db.isNull()) {
1368	downloadBufferPointer = db;
1369	downloadZerocopyBuffer = downloadBufferPointer.data();
1370	downloadBufferCurrentSize = 0;
1371	q->setAttribute(code: QNetworkRequest::DownloadBufferAttribute, value: QVariant::fromValue<QSharedPointer<char> > (value: downloadBufferPointer));
1372	}
1373
1374	q->setAttribute(code: QNetworkRequest::HttpPipeliningWasUsedAttribute, value: pu);
1375	q->setAttribute(code: QNetworkRequest::Http2WasUsedAttribute, value: h2Used);
1376
1377	// A user having manually defined which encodings they accept is, for
1378	// somwehat unknown (presumed legacy compatibility) reasons treated as
1379	// disabling our decompression:
1380	const bool autoDecompress = !request.headers().contains(name: QHttpHeaders::WellKnownHeader::AcceptEncoding);
1381	const bool shouldDecompress = isCompressed && autoDecompress;
1382	// reconstruct the HTTP header
1383	auto h = q->headers();
1384	for (qsizetype i = 0; i < hm.size(); ++i) {
1385	const auto key = hm.nameAt(i);
1386	const auto originValue = hm.valueAt(i);
1387
1388	// Reset any previous "location" header set in the reply. In case of
1389	// redirects, we don't want to 'append' multiple location header values,
1390	// rather we keep only the latest one
1391	if (key.compare(other: locationHeader(), cs: Qt::CaseInsensitive) == 0)
1392	h.removeAll(name: key);
1393
1394	if (shouldDecompress && !decompressHelper.isValid() && key == "content-encoding"_L1) {
1395	if (!synchronous) // with synchronous all the data is expected to be handled at once
1396	decompressHelper.setCountingBytesEnabled(true);
1397
1398	if (!decompressHelper.setEncoding(originValue)) {
1399	error(code: QNetworkReplyImpl::NetworkError::UnknownContentError,
1400	errorString: QCoreApplication::translate(context: "QHttp", key: "Failed to initialize decompression: %1")
1401	.arg(a: decompressHelper.errorString()));
1402	return;
1403	}
1404	decompressHelper.setDecompressedSafetyCheckThreshold(
1405	request.decompressedSafetyCheckThreshold());
1406	}
1407
1408	h.append(name: key, value: originValue);
1409	}
1410	q->setHeaders(std::move(h));
1411
1412	q->setAttribute(code: QNetworkRequest::HttpStatusCodeAttribute, value: statusCode);
1413	q->setAttribute(code: QNetworkRequest::HttpReasonPhraseAttribute, value: reasonPhrase);
1414	if (removedContentLength != -1)
1415	q->setAttribute(code: QNetworkRequest::OriginalContentLengthAttribute, value: removedContentLength);
1416
1417	// is it a redirection?
1418	if (!isHttpRedirectResponse())
1419	checkForRedirect(statusCode);
1420
1421	if (statusCode >= 500 && statusCode < 600) {
1422	QAbstractNetworkCache *nc = managerPrivate->networkCache;
1423	if (nc) {
1424	QNetworkCacheMetaData metaData = nc->metaData(url: httpRequest.url());
1425	auto value = metaData.headers().value(name: QHttpHeaders::WellKnownHeader::CacheControl);
1426	bool mustReValidate = false;
1427	if (!value.empty()) {
1428	QHash<QByteArray, QByteArray> cacheControl = parseHttpOptionHeader(header: value);
1429	if (cacheControl.contains(key: "must-revalidate"_ba))
1430	mustReValidate = true;
1431	}
1432	if (!mustReValidate && sendCacheContents(metaData))
1433	return;
1434	}
1435	}
1436
1437	if (statusCode == 304) {
1438	#if defined(QNETWORKACCESSHTTPBACKEND_DEBUG)
1439	qDebug() << "Received a 304 from" << request.url();
1440	#endif
1441	QAbstractNetworkCache *nc = managerPrivate->networkCache;
1442	if (nc) {
1443	QNetworkCacheMetaData oldMetaData = nc->metaData(url: httpRequest.url());
1444	QNetworkCacheMetaData metaData = fetchCacheMetaData(metaData: oldMetaData);
1445	if (oldMetaData != metaData)
1446	nc->updateMetaData(metaData);
1447	if (sendCacheContents(metaData))
1448	return;
1449	}
1450	}
1451
1452
1453	if (statusCode != 304 && statusCode != 303) {
1454	if (!isCachingEnabled())
1455	setCachingEnabled(true);
1456	}
1457
1458	_q_metaDataChanged();
1459	}
1460
1461	void QNetworkReplyHttpImplPrivate::replyDownloadProgressSlot(qint64 bytesReceived, qint64 bytesTotal)
1462	{
1463	Q_Q(QNetworkReplyHttpImpl);
1464
1465	// If we're closed just ignore this data
1466	if (!q->isOpen())
1467	return;
1468
1469	// we can be sure here that there is a download buffer
1470
1471	int pendingSignals = (int)pendingDownloadProgressEmissions->fetchAndAddAcquire(valueToAdd: -1) - 1;
1472	if (pendingSignals > 0) {
1473	// Let's ignore this signal and look at the next one coming in
1474	// (signal comppression)
1475	return;
1476	}
1477
1478	if (!q->isOpen())
1479	return;
1480
1481	if (cacheEnabled && isCachingAllowed() && bytesReceived == bytesTotal) {
1482	// Write everything in one go if we use a download buffer. might be more performant.
1483	initCacheSaveDevice();
1484	// need to check again if cache enabled and device exists
1485	if (cacheSaveDevice && cacheEnabled)
1486	cacheSaveDevice->write(data: downloadZerocopyBuffer, len: bytesTotal);
1487	// FIXME where is it closed?
1488	}
1489
1490	if (isHttpRedirectResponse())
1491	return;
1492
1493	bytesDownloaded = bytesReceived;
1494	setupTransferTimeout();
1495
1496	downloadBufferCurrentSize = bytesReceived;
1497
1498	// Only emit readyRead when actual data is there
1499	// emit readyRead before downloadProgress in case this will cause events to be
1500	// processed and we get into a recursive call (as in QProgressDialog).
1501	if (bytesDownloaded > 0)
1502	emit q->readyRead();
1503	if (downloadProgressSignalChoke.elapsed() >= progressSignalInterval) {
1504	downloadProgressSignalChoke.restart();
1505	emit q->downloadProgress(bytesReceived: bytesDownloaded, bytesTotal);
1506	}
1507	}
1508
1509	void QNetworkReplyHttpImplPrivate::httpAuthenticationRequired(const QHttpNetworkRequest &request,
1510	QAuthenticator *auth)
1511	{
1512	managerPrivate->authenticationRequired(authenticator: auth, reply: q_func(), synchronous, url, urlForLastAuthentication: &urlForLastAuthentication, allowAuthenticationReuse: request.withCredentials());
1513	}
1514
1515	#ifndef QT_NO_NETWORKPROXY
1516	void QNetworkReplyHttpImplPrivate::proxyAuthenticationRequired(const QNetworkProxy &proxy,
1517	QAuthenticator *authenticator)
1518	{
1519	managerPrivate->proxyAuthenticationRequired(url: request.url(), proxy, synchronous, authenticator, lastProxyAuthentication: &lastProxyAuthentication);
1520	}
1521	#endif
1522
1523	void QNetworkReplyHttpImplPrivate::httpError(QNetworkReply::NetworkError errorCode,
1524	const QString &errorString)
1525	{
1526	#if defined(QNETWORKACCESSHTTPBACKEND_DEBUG)
1527	qDebug() << "http error!" << errorCode << errorString;
1528	#endif
1529
1530	// FIXME?
1531	error(code: errorCode, errorString);
1532	}
1533
1534	#ifndef QT_NO_SSL
1535	void QNetworkReplyHttpImplPrivate::replyEncrypted()
1536	{
1537	Q_Q(QNetworkReplyHttpImpl);
1538	emit q->encrypted();
1539	}
1540
1541	void QNetworkReplyHttpImplPrivate::replySslErrors(
1542	const QList<QSslError> &list, bool *ignoreAll, QList<QSslError> *toBeIgnored)
1543	{
1544	Q_Q(QNetworkReplyHttpImpl);
1545	emit q->sslErrors(errors: list);
1546	// Check if the callback set any ignore and return this here to http thread
1547	if (pendingIgnoreAllSslErrors)
1548	*ignoreAll = true;
1549	if (!pendingIgnoreSslErrorsList.isEmpty())
1550	*toBeIgnored = pendingIgnoreSslErrorsList;
1551	}
1552
1553	void QNetworkReplyHttpImplPrivate::replySslConfigurationChanged(const QSslConfiguration &newSslConfiguration)
1554	{
1555	// Receiving the used SSL configuration from the HTTP thread
1556	if (sslConfiguration.data())
1557	*sslConfiguration = newSslConfiguration;
1558	else
1559	sslConfiguration.reset(other: new QSslConfiguration(newSslConfiguration));
1560	}
1561
1562	void QNetworkReplyHttpImplPrivate::replyPreSharedKeyAuthenticationRequiredSlot(QSslPreSharedKeyAuthenticator *authenticator)
1563	{
1564	Q_Q(QNetworkReplyHttpImpl);
1565	emit q->preSharedKeyAuthenticationRequired(authenticator);
1566	}
1567	#endif
1568
1569	// Coming from QNonContiguousByteDeviceThreadForwardImpl in HTTP thread
1570	void QNetworkReplyHttpImplPrivate::resetUploadDataSlot(bool *r)
1571	{
1572	*r = uploadByteDevice->reset();
1573	if (*r) {
1574	// reset our own position which is used for the inter-thread communication
1575	uploadByteDevicePosition = 0;
1576	}
1577	}
1578
1579	// Coming from QNonContiguousByteDeviceThreadForwardImpl in HTTP thread
1580	void QNetworkReplyHttpImplPrivate::sentUploadDataSlot(qint64 pos, qint64 amount)
1581	{
1582	if (!uploadByteDevice) // uploadByteDevice is no longer available
1583	return;
1584
1585	if (uploadByteDevicePosition + amount != pos) {
1586	// Sanity check, should not happen.
1587	error(code: QNetworkReply::UnknownNetworkError, errorString: QString());
1588	return;
1589	}
1590	uploadByteDevice->advanceReadPointer(amount);
1591	uploadByteDevicePosition += amount;
1592	}
1593
1594	// Coming from QNonContiguousByteDeviceThreadForwardImpl in HTTP thread
1595	void QNetworkReplyHttpImplPrivate::wantUploadDataSlot(qint64 maxSize)
1596	{
1597	Q_Q(QNetworkReplyHttpImpl);
1598
1599	if (!uploadByteDevice) // uploadByteDevice is no longer available
1600	return;
1601
1602	// call readPointer
1603	qint64 currentUploadDataLength = 0;
1604	char *data = const_cast<char*>(uploadByteDevice->readPointer(maximumLength: maxSize, len&: currentUploadDataLength));
1605
1606	if (currentUploadDataLength == 0) {
1607	uploadDeviceChoking = true;
1608	// No bytes from upload byte device. There will be bytes later, it will emit readyRead()
1609	// and our uploadByteDeviceReadyReadSlot() is called.
1610	return;
1611	} else {
1612	uploadDeviceChoking = false;
1613	}
1614
1615	// Let's make a copy of this data
1616	QByteArray dataArray(data, currentUploadDataLength);
1617
1618	// Communicate back to HTTP thread
1619	emit q->haveUploadData(pos: uploadByteDevicePosition, dataArray, dataAtEnd: uploadByteDevice->atEnd(), dataSize: uploadByteDevice->size());
1620	}
1621
1622	void QNetworkReplyHttpImplPrivate::uploadByteDeviceReadyReadSlot()
1623	{
1624	// Start the flow between this thread and the HTTP thread again by triggering a upload.
1625	// However only do this when we were choking before, else the state in
1626	// QNonContiguousByteDeviceThreadForwardImpl gets messed up.
1627	if (uploadDeviceChoking) {
1628	uploadDeviceChoking = false;
1629	wantUploadDataSlot(maxSize: 1024);
1630	}
1631	}
1632
1633
1634	/*
1635	A simple web page that can be used to test us: http://www.procata.com/cachetest/
1636	*/
1637	bool QNetworkReplyHttpImplPrivate::sendCacheContents(const QNetworkCacheMetaData &metaData)
1638	{
1639	Q_Q(QNetworkReplyHttpImpl);
1640
1641	setCachingEnabled(false);
1642	if (!metaData.isValid())
1643	return false;
1644
1645	QAbstractNetworkCache *nc = managerPrivate->networkCache;
1646	Q_ASSERT(nc);
1647	QIODevice *contents = nc->data(url);
1648	if (!contents) {
1649	#if defined(QNETWORKACCESSHTTPBACKEND_DEBUG)
1650	qDebug() << "Cannot send cache, the contents are 0" << url;
1651	#endif
1652	return false;
1653	}
1654	contents->setParent(q);
1655
1656	QNetworkCacheMetaData::AttributesMap attributes = metaData.attributes();
1657	int status = attributes.value(key: QNetworkRequest::HttpStatusCodeAttribute).toInt();
1658	if (status < 100)
1659	status = 200; // fake it
1660
1661	statusCode = status;
1662
1663	q->setAttribute(code: QNetworkRequest::HttpStatusCodeAttribute, value: status);
1664	q->setAttribute(code: QNetworkRequest::HttpReasonPhraseAttribute, value: attributes.value(key: QNetworkRequest::HttpReasonPhraseAttribute));
1665	q->setAttribute(code: QNetworkRequest::SourceIsFromCacheAttribute, value: true);
1666
1667	QHttpHeaders cachedHeaders = metaData.headers();
1668	QHttpHeaders h = headers();
1669	QUrl redirectUrl;
1670	for (qsizetype i = 0; i < cachedHeaders.size(); ++i) {
1671	const auto name = cachedHeaders.nameAt(i);
1672	const auto value = cachedHeaders.valueAt(i);
1673
1674	if (httpRequest.isFollowRedirects()
1675	&& !name.compare(other: locationHeader(), cs: Qt::CaseInsensitive)) {
1676	redirectUrl = QUrl::fromEncoded(input: value);
1677	}
1678
1679	h.replaceOrAppend(name, newValue: value);
1680	}
1681	setHeaders(std::move(h));
1682
1683	if (!isHttpRedirectResponse())
1684	checkForRedirect(statusCode: status);
1685
1686	cacheLoadDevice = contents;
1687	q->connect(asender: cacheLoadDevice, SIGNAL(readyRead()), SLOT(_q_cacheLoadReadyRead()));
1688	q->connect(asender: cacheLoadDevice, SIGNAL(readChannelFinished()), SLOT(_q_cacheLoadReadyRead()));
1689
1690	// This needs to be emitted in the event loop because it can be reached at
1691	// the direct code path of qnam.get(...) before the user has a chance
1692	// to connect any signals.
1693	QMetaObject::invokeMethod(obj: q, member: "_q_metaDataChanged", c: Qt::QueuedConnection);
1694	QMetaObject::invokeMethod(obj: q, member: "_q_cacheLoadReadyRead", c: Qt::QueuedConnection);
1695
1696
1697	#if defined(QNETWORKACCESSHTTPBACKEND_DEBUG)
1698	qDebug() << "Successfully sent cache:" << url << contents->size() << "bytes";
1699	#endif
1700
1701	// Do redirect processing
1702	if (httpRequest.isFollowRedirects() && QHttpNetworkReply::isHttpRedirect(statusCode: status)) {
1703	QMetaObject::invokeMethod(obj: q, member: "onRedirected", c: Qt::QueuedConnection,
1704	Q_ARG(QUrl, redirectUrl),
1705	Q_ARG(int, status),
1706	Q_ARG(int, httpRequest.redirectCount() - 1));
1707	}
1708
1709	// Set the following flag so we can ignore some signals from HTTP thread
1710	// that would still come
1711	loadingFromCache = true;
1712	return true;
1713	}
1714
1715	static auto caseInsensitiveCompare(QByteArrayView value)
1716	{
1717	return [value](QByteArrayView element)
1718	{
1719	return value.compare(a: element, cs: Qt::CaseInsensitive) == 0;
1720	};
1721	}
1722
1723	static bool isHopByHop(QByteArrayView header)
1724	{
1725	constexpr QByteArrayView headers[] = { "connection",
1726	"keep-alive",
1727	"proxy-authenticate",
1728	"proxy-authorization",
1729	"te",
1730	"trailers",
1731	"transfer-encoding",
1732	"upgrade"};
1733	return std::any_of(first: std::begin(arr: headers), last: std::end(arr: headers), pred: caseInsensitiveCompare(value: header));
1734	}
1735
1736	QNetworkCacheMetaData QNetworkReplyHttpImplPrivate::fetchCacheMetaData(const QNetworkCacheMetaData &oldMetaData) const
1737	{
1738	Q_Q(const QNetworkReplyHttpImpl);
1739
1740	QNetworkCacheMetaData metaData = oldMetaData;
1741	QHttpHeaders cacheHeaders = metaData.headers();
1742
1743	const auto newHeaders = q->headers();
1744	for (qsizetype i = 0; i < newHeaders.size(); ++i) {
1745	const auto name = newHeaders.nameAt(i);
1746	const auto value = newHeaders.valueAt(i);
1747
1748	if (isHopByHop(header: name))
1749	continue;
1750
1751	if (name.compare(other: "set-cookie", cs: Qt::CaseInsensitive) == 0)
1752	continue;
1753
1754	// for 4.6.0, we were planning to not store the date header in the
1755	// cached resource; through that we planned to reduce the number
1756	// of writes to disk when using a QNetworkDiskCache (i.e. don't
1757	// write to disk when only the date changes).
1758	// However, without the date we cannot calculate the age of the page
1759	// anymore.
1760	//if (header == "date")
1761	//continue;
1762
1763	// Don't store Warning 1xx headers
1764	if (name.compare(other: "warning", cs: Qt::CaseInsensitive) == 0) {
1765	if (value.size() == 3
1766	&& value[0] == '1'
1767	&& isAsciiDigit(c: value[1])
1768	&& isAsciiDigit(c: value[2]))
1769	continue;
1770	}
1771
1772	if (cacheHeaders.contains(name)) {
1773	// Match the behavior of Firefox and assume Cache-Control: "no-transform"
1774	constexpr QByteArrayView headers[]=
1775	{"content-encoding", "content-range", "content-type"};
1776	if (std::any_of(first: std::begin(arr: headers), last: std::end(arr: headers), pred: caseInsensitiveCompare(value: name)))
1777	continue;
1778	}
1779
1780	// IIS has been known to send "Content-Length: 0" on 304 responses, so
1781	// ignore this too
1782	if (statusCode == 304 && name.compare(other: "content-length", cs: Qt::CaseInsensitive) == 0)
1783	continue;
1784
1785	#if defined(QNETWORKACCESSHTTPBACKEND_DEBUG)
1786	QByteArrayView n = newHeaders.value(name);
1787	QByteArrayView o = cacheHeaders.value(name);
1788	if (n != o && name.compare("date", Qt::CaseInsensitive) != 0) {
1789	qDebug() << "replacing" << name;
1790	qDebug() << "new" << n;
1791	qDebug() << "old" << o;
1792	}
1793	#endif
1794	cacheHeaders.replaceOrAppend(name, newValue: value);
1795	}
1796	metaData.setHeaders(cacheHeaders);
1797
1798	bool checkExpired = true;
1799
1800	QHash<QByteArray, QByteArray> cacheControl;
1801	auto value = cacheHeaders.value(name: QHttpHeaders::WellKnownHeader::CacheControl);
1802	if (!value.empty()) {
1803	cacheControl = parseHttpOptionHeader(header: value);
1804	QByteArray maxAge = cacheControl.value(key: "max-age"_ba);
1805	if (!maxAge.isEmpty()) {
1806	checkExpired = false;
1807	QDateTime dt = QDateTime::currentDateTimeUtc();
1808	dt = dt.addSecs(secs: maxAge.toInt());
1809	metaData.setExpirationDate(dt);
1810	}
1811	}
1812	if (checkExpired) {
1813	if (const auto value = cacheHeaders.value(
1814	name: QHttpHeaders::WellKnownHeader::Expires); !value.isEmpty()) {
1815	QDateTime expiredDateTime = QNetworkHeadersPrivate::fromHttpDate(value);
1816	metaData.setExpirationDate(expiredDateTime);
1817	}
1818	}
1819
1820	if (const auto value = cacheHeaders.value(
1821	name: QHttpHeaders::WellKnownHeader::LastModified); !value.isEmpty()) {
1822	metaData.setLastModified(QNetworkHeadersPrivate::fromHttpDate(value));
1823	}
1824
1825
1826	bool canDiskCache;
1827	// only cache GET replies by default, all other replies (POST, PUT, DELETE)
1828	// are not cacheable by default (according to RFC 2616 section 9)
1829	if (httpRequest.operation() == QHttpNetworkRequest::Get) {
1830
1831	canDiskCache = true;
1832	// HTTP/1.1. Check the Cache-Control header
1833	if (cacheControl.contains(key: "no-store"_ba))
1834	canDiskCache = false;
1835
1836	// responses to POST might be cacheable
1837	} else if (httpRequest.operation() == QHttpNetworkRequest::Post) {
1838
1839	canDiskCache = false;
1840	// some pages contain "expires:" and "cache-control: no-cache" field,
1841	// so we only might cache POST requests if we get "cache-control: max-age ..."
1842	if (cacheControl.contains(key: "max-age"_ba))
1843	canDiskCache = true;
1844
1845	// responses to PUT and DELETE are not cacheable
1846	} else {
1847	canDiskCache = false;
1848	}
1849
1850	metaData.setSaveToDisk(canDiskCache);
1851	QNetworkCacheMetaData::AttributesMap attributes;
1852	if (statusCode != 304) {
1853	// update the status code
1854	attributes.insert(key: QNetworkRequest::HttpStatusCodeAttribute, value: statusCode);
1855	attributes.insert(key: QNetworkRequest::HttpReasonPhraseAttribute, value: reasonPhrase);
1856	} else {
1857	// this is a redirection, keep the attributes intact
1858	attributes = oldMetaData.attributes();
1859	}
1860	metaData.setAttributes(attributes);
1861	return metaData;
1862	}
1863
1864	bool QNetworkReplyHttpImplPrivate::canResume() const
1865	{
1866	Q_Q(const QNetworkReplyHttpImpl);
1867
1868	// Only GET operation supports resuming.
1869	if (operation != QNetworkAccessManager::GetOperation)
1870	return false;
1871
1872	const auto h = q->headers();
1873
1874	// Can only resume if server/resource supports Range header.
1875	const auto acceptRanges = h.value(name: QHttpHeaders::WellKnownHeader::AcceptRanges);
1876	if (acceptRanges.empty() || acceptRanges == "none")
1877	return false;
1878
1879	// We only support resuming for byte ranges.
1880	const auto range = h.value(name: QHttpHeaders::WellKnownHeader::Range);
1881	if (!range.empty()) {
1882	if (!range.startsWith(other: bytesEqualPrefix()))
1883	return false;
1884	}
1885
1886	// If we're using a download buffer then we don't support resuming/migration
1887	// right now. Too much trouble.
1888	if (downloadZerocopyBuffer)
1889	return false;
1890
1891	return true;
1892	}
1893
1894	void QNetworkReplyHttpImplPrivate::setResumeOffset(quint64 offset)
1895	{
1896	resumeOffset = offset;
1897	}
1898
1899	void QNetworkReplyHttpImplPrivate::_q_startOperation()
1900	{
1901	// Ensure this function is only being called once, and not at all if we were
1902	// cancelled
1903	if (state >= Working)
1904	return;
1905
1906	state = Working;
1907
1908	postRequest(newHttpRequest: request);
1909
1910	setupTransferTimeout();
1911	if (synchronous) {
1912	state = Finished;
1913	q_func()->setFinished(true);
1914	}
1915	}
1916
1917	void QNetworkReplyHttpImplPrivate::_q_cacheLoadReadyRead()
1918	{
1919	Q_Q(QNetworkReplyHttpImpl);
1920
1921	if (state != Working)
1922	return;
1923	if (!cacheLoadDevice || !q->isOpen() || !cacheLoadDevice->bytesAvailable())
1924	return;
1925
1926	// FIXME Optimize to use zerocopy download buffer if it is a QBuffer.
1927	// Needs to be done where sendCacheContents() (?) of HTTP is emitting
1928	// metaDataChanged ?
1929
1930	const auto totalSizeOpt = QNetworkHeadersPrivate::toInt(
1931	value: headers().value(name: QHttpHeaders::WellKnownHeader::ContentLength));
1932
1933	// emit readyRead before downloadProgress in case this will cause events to be
1934	// processed and we get into a recursive call (as in QProgressDialog).
1935
1936	if (!(isHttpRedirectResponse())) {
1937	// This readyRead() goes to the user. The user then may or may not read() anything.
1938	emit q->readyRead();
1939
1940	if (downloadProgressSignalChoke.elapsed() >= progressSignalInterval) {
1941	downloadProgressSignalChoke.restart();
1942	emit q->downloadProgress(bytesReceived: bytesDownloaded, bytesTotal: totalSizeOpt.value_or(u: -1));
1943	}
1944	}
1945
1946	// A signal we've emitted might be handled by a slot that aborts,
1947	// so we need to check for that and bail out if it's happened:
1948	if (!q->isOpen())
1949	return;
1950
1951	// If there are still bytes available in the cacheLoadDevice then the user did not read
1952	// in response to the readyRead() signal. This means we have to load from the cacheLoadDevice
1953	// and buffer that stuff. This is needed to be able to properly emit finished() later.
1954	while (cacheLoadDevice->bytesAvailable() && !isHttpRedirectResponse())
1955	buffer.append(qba: cacheLoadDevice->readAll());
1956
1957	if (cacheLoadDevice->isSequential()) {
1958	// check if end and we can read the EOF -1
1959	char c;
1960	qint64 actualCount = cacheLoadDevice->read(data: &c, maxlen: 1);
1961	if (actualCount < 0) {
1962	cacheLoadDevice->deleteLater();
1963	cacheLoadDevice = nullptr;
1964	QMetaObject::invokeMethod(obj: q, member: "_q_finished", c: Qt::QueuedConnection);
1965	} else if (actualCount == 1) {
1966	// This is most probably not happening since most QIODevice returned something proper for bytesAvailable()
1967	// and had already been "emptied".
1968	cacheLoadDevice->ungetChar(c);
1969	}
1970	} else if ((!cacheLoadDevice->isSequential() && cacheLoadDevice->atEnd())) {
1971	// This codepath is in case the cache device is a QBuffer, e.g. from QNetworkDiskCache.
1972	cacheLoadDevice->deleteLater();
1973	cacheLoadDevice = nullptr;
1974	QMetaObject::invokeMethod(obj: q, member: "_q_finished", c: Qt::QueuedConnection);
1975	}
1976	}
1977
1978
1979	void QNetworkReplyHttpImplPrivate::_q_bufferOutgoingDataFinished()
1980	{
1981	Q_Q(QNetworkReplyHttpImpl);
1982
1983	// make sure this is only called once, ever.
1984	//_q_bufferOutgoingData may call it or the readChannelFinished emission
1985	if (state != Buffering)
1986	return;
1987
1988	// disconnect signals
1989	QObject::disconnect(sender: outgoingData, SIGNAL(readyRead()), receiver: q, SLOT(_q_bufferOutgoingData()));
1990	QObject::disconnect(sender: outgoingData, SIGNAL(readChannelFinished()), receiver: q, SLOT(_q_bufferOutgoingDataFinished()));
1991
1992	// finally, start the request
1993	QMetaObject::invokeMethod(obj: q, member: "_q_startOperation", c: Qt::QueuedConnection);
1994	}
1995
1996	void QNetworkReplyHttpImplPrivate::_q_cacheSaveDeviceAboutToClose()
1997	{
1998	// do not keep a dangling pointer to the device around (device
1999	// is closing because e.g. QAbstractNetworkCache::remove() was called).
2000	cacheSaveDevice = nullptr;
2001	}
2002
2003	void QNetworkReplyHttpImplPrivate::_q_bufferOutgoingData()
2004	{
2005	Q_Q(QNetworkReplyHttpImpl);
2006
2007	if (!outgoingDataBuffer) {
2008	// first call, create our buffer
2009	outgoingDataBuffer = std::make_shared<QRingBuffer>();
2010
2011	QObject::connect(sender: outgoingData, SIGNAL(readyRead()), receiver: q, SLOT(_q_bufferOutgoingData()));
2012	QObject::connect(sender: outgoingData, SIGNAL(readChannelFinished()), receiver: q, SLOT(_q_bufferOutgoingDataFinished()));
2013	}
2014
2015	qint64 bytesBuffered = 0;
2016	qint64 bytesToBuffer = 0;
2017
2018	// read data into our buffer
2019	forever {
2020	bytesToBuffer = outgoingData->bytesAvailable();
2021	// unknown? just try 2 kB, this also ensures we always try to read the EOF
2022	if (bytesToBuffer <= 0)
2023	bytesToBuffer = 2*1024;
2024
2025	char *dst = outgoingDataBuffer->reserve(bytes: bytesToBuffer);
2026	bytesBuffered = outgoingData->read(data: dst, maxlen: bytesToBuffer);
2027
2028	if (bytesBuffered == -1) {
2029	// EOF has been reached.
2030	outgoingDataBuffer->chop(bytes: bytesToBuffer);
2031
2032	_q_bufferOutgoingDataFinished();
2033	break;
2034	} else if (bytesBuffered == 0) {
2035	// nothing read right now, just wait until we get called again
2036	outgoingDataBuffer->chop(bytes: bytesToBuffer);
2037
2038	break;
2039	} else {
2040	// don't break, try to read() again
2041	outgoingDataBuffer->chop(bytes: bytesToBuffer - bytesBuffered);
2042	}
2043	}
2044	}
2045
2046	void QNetworkReplyHttpImplPrivate::_q_transferTimedOut()
2047	{
2048	Q_Q(QNetworkReplyHttpImpl);
2049	q->abort();
2050	}
2051
2052	void QNetworkReplyHttpImplPrivate::setupTransferTimeout()
2053	{
2054	Q_Q(QNetworkReplyHttpImpl);
2055	if (!transferTimeout) {
2056	transferTimeout = new QTimer(q);
2057	QObject::connect(sender: transferTimeout, SIGNAL(timeout()),
2058	receiver: q, SLOT(_q_transferTimedOut()),
2059	Qt::QueuedConnection);
2060	}
2061	transferTimeout->stop();
2062	if (request.transferTimeoutAsDuration() > 0ms) {
2063	transferTimeout->setSingleShot(true);
2064	transferTimeout->setInterval(request.transferTimeoutAsDuration());
2065	QMetaObject::invokeMethod(obj: transferTimeout, member: "start",
2066	c: Qt::QueuedConnection);
2067
2068	}
2069	}
2070
2071	// need to have this function since the reply is a private member variable
2072	// and the special backends need to access this.
2073	void QNetworkReplyHttpImplPrivate::emitReplyUploadProgress(qint64 bytesSent, qint64 bytesTotal)
2074	{
2075	Q_Q(QNetworkReplyHttpImpl);
2076	if (isFinished)
2077	return;
2078
2079	setupTransferTimeout();
2080
2081	if (!emitAllUploadProgressSignals) {
2082	//choke signal emissions, except the first and last signals which are unconditional
2083	if (uploadProgressSignalChoke.isValid()) {
2084	if (bytesSent != bytesTotal && uploadProgressSignalChoke.elapsed() < progressSignalInterval) {
2085	return;
2086	}
2087	uploadProgressSignalChoke.restart();
2088	} else {
2089	uploadProgressSignalChoke.start();
2090	}
2091	}
2092	emit q->uploadProgress(bytesSent, bytesTotal);
2093	}
2094
2095	QNonContiguousByteDevice* QNetworkReplyHttpImplPrivate::createUploadByteDevice()
2096	{
2097	Q_Q(QNetworkReplyHttpImpl);
2098
2099	if (outgoingDataBuffer)
2100	uploadByteDevice = QNonContiguousByteDeviceFactory::createShared(ringBuffer: outgoingDataBuffer);
2101	else if (outgoingData) {
2102	uploadByteDevice = QNonContiguousByteDeviceFactory::createShared(device: outgoingData);
2103	} else {
2104	return nullptr;
2105	}
2106
2107	// We want signal emissions only for normal asynchronous uploads
2108	if (!synchronous)
2109	QObject::connect(sender: uploadByteDevice.get(), SIGNAL(readProgress(qint64,qint64)),
2110	receiver: q, SLOT(emitReplyUploadProgress(qint64,qint64)));
2111
2112	return uploadByteDevice.get();
2113	}
2114
2115	void QNetworkReplyHttpImplPrivate::_q_finished()
2116	{
2117	// This gets called queued, just forward to real call then
2118	finished();
2119	}
2120
2121	void QNetworkReplyHttpImplPrivate::finished()
2122	{
2123	Q_Q(QNetworkReplyHttpImpl);
2124	if (transferTimeout)
2125	transferTimeout->stop();
2126	if (state == Finished || state == Aborted)
2127	return;
2128
2129	const auto totalSizeOpt = QNetworkHeadersPrivate::toInt(
2130	value: headers().value(name: QHttpHeaders::WellKnownHeader::ContentLength));
2131	const qint64 totalSize = totalSizeOpt.value_or(u: -1);
2132
2133	// if we don't know the total size of or we received everything save the cache.
2134	// If the data is compressed then this is done in readData()
2135	if ((totalSize == -1 || bytesDownloaded == totalSize)
2136	&& !decompressHelper.isValid()) {
2137	completeCacheSave();
2138	}
2139
2140	// We check for errorCode too as in case of SSL handshake failure, we still
2141	// get the HTTP redirect status code (301, 303 etc)
2142	if (isHttpRedirectResponse() && errorCode == QNetworkReply::NoError)
2143	return;
2144
2145	state = Finished;
2146	q->setFinished(true);
2147
2148	if (totalSize == -1) {
2149	emit q->downloadProgress(bytesReceived: bytesDownloaded, bytesTotal: bytesDownloaded);
2150	} else {
2151	emit q->downloadProgress(bytesReceived: bytesDownloaded, bytesTotal: totalSize);
2152	}
2153
2154	if (bytesUploaded == -1 && (outgoingData || outgoingDataBuffer))
2155	emit q->uploadProgress(bytesSent: 0, bytesTotal: 0);
2156
2157	emit q->readChannelFinished();
2158	emit q->finished();
2159	}
2160
2161	void QNetworkReplyHttpImplPrivate::_q_error(QNetworkReplyImpl::NetworkError code, const QString &errorMessage)
2162	{
2163	this->error(code, errorString: errorMessage);
2164	}
2165
2166
2167	void QNetworkReplyHttpImplPrivate::error(QNetworkReplyImpl::NetworkError code, const QString &errorMessage)
2168	{
2169	Q_Q(QNetworkReplyHttpImpl);
2170	// Can't set and emit multiple errors.
2171	if (errorCode != QNetworkReply::NoError) {
2172	// But somewhat unavoidable if we have cancelled the request:
2173	if (errorCode != QNetworkReply::OperationCanceledError)
2174	qWarning(msg: "QNetworkReplyImplPrivate::error: Internal problem, this method must only be called once.");
2175	return;
2176	}
2177
2178	errorCode = code;
2179	q->setErrorString(errorMessage);
2180
2181	// note: might not be a good idea, since users could decide to delete us
2182	// which would delete the backend too...
2183	// maybe we should protect the backend
2184	emit q->errorOccurred(code);
2185	}
2186
2187	void QNetworkReplyHttpImplPrivate::_q_metaDataChanged()
2188	{
2189	// FIXME merge this with replyDownloadMetaData(); ?
2190
2191	Q_Q(QNetworkReplyHttpImpl);
2192	// 1. do we have cookies?
2193	// 2. are we allowed to set them?
2194	Q_ASSERT(manager);
2195
2196	const auto cookiesOpt = QNetworkHeadersPrivate::toSetCookieList(
2197	values: headers().values(name: QHttpHeaders::WellKnownHeader::SetCookie));
2198	const auto cookies = cookiesOpt.value_or(u: QList<QNetworkCookie>());
2199	if (!cookies.empty()
2200	&& request.attribute(code: QNetworkRequest::CookieSaveControlAttribute,
2201	defaultValue: QNetworkRequest::Automatic).toInt() == QNetworkRequest::Automatic) {
2202	QNetworkCookieJar *jar = manager->cookieJar();
2203	if (jar) {
2204	jar->setCookiesFromUrl(cookieList: cookies, url);
2205	}
2206	}
2207	emit q->metaDataChanged();
2208	}
2209
2210	void QNetworkReplyHttpImplPrivate::createCache()
2211	{
2212	// check if we can save and if we're allowed to
2213	if (!managerPrivate->networkCache
2214	|| !request.attribute(code: QNetworkRequest::CacheSaveControlAttribute, defaultValue: true).toBool())
2215	return;
2216	cacheEnabled = true;
2217	}
2218
2219	bool QNetworkReplyHttpImplPrivate::isCachingEnabled() const
2220	{
2221	return (cacheEnabled && managerPrivate->networkCache != nullptr);
2222	}
2223
2224	void QNetworkReplyHttpImplPrivate::setCachingEnabled(bool enable)
2225	{
2226	if (!enable && !cacheEnabled)
2227	return; // nothing to do
2228	if (enable && cacheEnabled)
2229	return; // nothing to do either!
2230
2231	if (enable) {
2232	if (Q_UNLIKELY(bytesDownloaded)) {
2233	qDebug() << "setCachingEnabled: " << bytesDownloaded << " bytesDownloaded";
2234	// refuse to enable in this case
2235	qCritical(msg: "QNetworkReplyImpl: backend error: caching was enabled after some bytes had been written");
2236	return;
2237	}
2238
2239	createCache();
2240	} else {
2241	// someone told us to turn on, then back off?
2242	// ok... but you should make up your mind
2243	qDebug(msg: "QNetworkReplyImpl: setCachingEnabled(true) called after setCachingEnabled(false)");
2244	managerPrivate->networkCache->remove(url);
2245	cacheSaveDevice = nullptr;
2246	cacheEnabled = false;
2247	}
2248	}
2249
2250	bool QNetworkReplyHttpImplPrivate::isCachingAllowed() const
2251	{
2252	return operation == QNetworkAccessManager::GetOperation || operation == QNetworkAccessManager::HeadOperation;
2253	}
2254
2255	void QNetworkReplyHttpImplPrivate::completeCacheSave()
2256	{
2257	if (cacheEnabled && errorCode != QNetworkReplyImpl::NoError) {
2258	managerPrivate->networkCache->remove(url);
2259	} else if (cacheEnabled && cacheSaveDevice) {
2260	managerPrivate->networkCache->insert(device: cacheSaveDevice);
2261	}
2262	cacheSaveDevice = nullptr;
2263	cacheEnabled = false;
2264	}
2265
2266	QT_END_NAMESPACE
2267
2268	#include "moc_qnetworkreplyhttpimpl_p.cpp"
2269