summaryrefslogtreecommitdiffstats
path: root/src/network/access/qhttpthreaddelegate.cpp
blob: 0364dac52e51f299ef98fdfc58d138ccc1be797b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

//#define QHTTPTHREADDELEGATE_DEBUG
#include "qhttpthreaddelegate_p.h"

#include <QThread>
#include <QTimer>
#include <QAuthenticator>
#include <QEventLoop>

#include "private/qhttpnetworkreply_p.h"
#include "private/qnetworkaccesscache_p.h"
#include "private/qnoncontiguousbytedevice_p.h"

#ifndef QT_NO_HTTP

QT_BEGIN_NAMESPACE

static QNetworkReply::NetworkError statusCodeFromHttp(int httpStatusCode, const QUrl &url)
{
    QNetworkReply::NetworkError code;
    // we've got an error
    switch (httpStatusCode) {
    case 401:               // Authorization required
        code = QNetworkReply::AuthenticationRequiredError;
        break;

    case 403:               // Access denied
        code = QNetworkReply::ContentOperationNotPermittedError;
        break;

    case 404:               // Not Found
        code = QNetworkReply::ContentNotFoundError;
        break;

    case 405:               // Method Not Allowed
        code = QNetworkReply::ContentOperationNotPermittedError;
        break;

    case 407:
        code = QNetworkReply::ProxyAuthenticationRequiredError;
        break;

    case 418:               // I'm a teapot
        code = QNetworkReply::ProtocolInvalidOperationError;
        break;


    default:
        if (httpStatusCode > 500) {
            // some kind of server error
            code = QNetworkReply::ProtocolUnknownError;
        } else if (httpStatusCode >= 400) {
            // content error we did not handle above
            code = QNetworkReply::UnknownContentError;
        } else {
            qWarning("QNetworkAccess: got HTTP status code %d which is not expected from url: \"%s\"",
                     httpStatusCode, qPrintable(url.toString()));
            code = QNetworkReply::ProtocolFailure;
        }
    }

    return code;
}


static QByteArray makeCacheKey(QUrl &url, QNetworkProxy *proxy)
{
    QByteArray result;
    QUrl copy = url;
    bool isEncrypted = copy.scheme().toLower() == QLatin1String("https");
    copy.setPort(copy.port(isEncrypted ? 443 : 80));
    result = copy.toEncoded(QUrl::RemoveUserInfo | QUrl::RemovePath |
                            QUrl::RemoveQuery | QUrl::RemoveFragment);

#ifndef QT_NO_NETWORKPROXY
    if (proxy && proxy->type() != QNetworkProxy::NoProxy) {
        QUrl key;

        switch (proxy->type()) {
        case QNetworkProxy::Socks5Proxy:
            key.setScheme(QLatin1String("proxy-socks5"));
            break;

        case QNetworkProxy::HttpProxy:
        case QNetworkProxy::HttpCachingProxy:
            key.setScheme(QLatin1String("proxy-http"));
            break;

        default:
            break;
        }

        if (!key.scheme().isEmpty()) {
            key.setUserName(proxy->user());
            key.setHost(proxy->hostName());
            key.setPort(proxy->port());
            key.setEncodedQuery(result);
            result = key.toEncoded();
        }
    }
#else
    Q_UNUSED(proxy)
#endif

    return "http-connection:" + result;
}

class QNetworkAccessCachedHttpConnection: public QHttpNetworkConnection,
                                      public QNetworkAccessCache::CacheableObject
{
    // Q_OBJECT
public:
#ifdef QT_NO_BEARERMANAGEMENT
    QNetworkAccessCachedHttpConnection(const QString &hostName, quint16 port, bool encrypt)
        : QHttpNetworkConnection(hostName, port, encrypt)
#else
    QNetworkAccessCachedHttpConnection(const QString &hostName, quint16 port, bool encrypt, QSharedPointer<QNetworkSession> networkSession)
        : QHttpNetworkConnection(hostName, port, encrypt, /*parent=*/0, networkSession)
#endif
    {
        setExpires(true);
        setShareable(true);
    }

    virtual void dispose()
    {
#if 0  // sample code; do this right with the API
        Q_ASSERT(!isWorking());
#endif
        delete this;
    }
};


QThreadStorage<QNetworkAccessCache *> QHttpThreadDelegate::connections;


QHttpThreadDelegate::~QHttpThreadDelegate()
{
    // It could be that the main thread has asked us to shut down, so we need to delete the HTTP reply
    if (httpReply) {
        delete httpReply;
    }

    // Get the object cache that stores our QHttpNetworkConnection objects
    // and release the entry for this QHttpNetworkConnection
    if (connections.hasLocalData() && !cacheKey.isEmpty()) {
        connections.localData()->releaseEntry(cacheKey);
    }
}


QHttpThreadDelegate::QHttpThreadDelegate(QObject *parent) :
    QObject(parent)
    , ssl(false)
    , downloadBufferMaximumSize(0)
    , pendingDownloadData(0)
    , pendingDownloadProgress(0)
    , synchronous(false)
    , incomingStatusCode(0)
    , isPipeliningUsed(false)
    , incomingContentLength(-1)
    , incomingErrorCode(QNetworkReply::NoError)
    , downloadBuffer(0)
    , httpConnection(0)
    , httpReply(0)
    , synchronousRequestLoop(0)
{
}

// This is invoked as BlockingQueuedConnection from QNetworkAccessHttpBackend in the user thread
void QHttpThreadDelegate::startRequestSynchronously()
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::startRequestSynchronously() thread=" << QThread::currentThreadId();
#endif
    synchronous = true;

    QEventLoop synchronousRequestLoop;
    this->synchronousRequestLoop = &synchronousRequestLoop;

    // Worst case timeout
    QTimer::singleShot(30*1000, this, SLOT(abortRequest()));

    QMetaObject::invokeMethod(this, "startRequest", Qt::QueuedConnection);
    synchronousRequestLoop.exec();

    connections.localData()->releaseEntry(cacheKey);
    connections.setLocalData(0);

#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::startRequestSynchronously() thread=" << QThread::currentThreadId() << "finished";
#endif
}


// This is invoked as QueuedConnection from QNetworkAccessHttpBackend in the user thread
void QHttpThreadDelegate::startRequest()
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::startRequest() thread=" << QThread::currentThreadId();
#endif
    // Check QThreadStorage for the QNetworkAccessCache
    // If not there, create this connection cache
    if (!connections.hasLocalData()) {
        connections.setLocalData(new QNetworkAccessCache());
    }

    // check if we have an open connection to this host
    QUrl urlCopy = httpRequest.url();
    urlCopy.setPort(urlCopy.port(ssl ? 443 : 80));

#ifndef QT_NO_NETWORKPROXY
    if (transparentProxy.type() != QNetworkProxy::NoProxy)
        cacheKey = makeCacheKey(urlCopy, &transparentProxy);
    else if (cacheProxy.type() != QNetworkProxy::NoProxy)
        cacheKey = makeCacheKey(urlCopy, &cacheProxy);
    else
#endif
        cacheKey = makeCacheKey(urlCopy, 0);


    // the http object is actually a QHttpNetworkConnection
    httpConnection = static_cast<QNetworkAccessCachedHttpConnection *>(connections.localData()->requestEntryNow(cacheKey));
    if (httpConnection == 0) {
        // no entry in cache; create an object
        // the http object is actually a QHttpNetworkConnection
#ifdef QT_NO_BEARERMANAGEMENT
        httpConnection = new QNetworkAccessCachedHttpConnection(urlCopy.host(), urlCopy.port(), ssl);
#else
        httpConnection = new QNetworkAccessCachedHttpConnection(urlCopy.host(), urlCopy.port(), ssl, networkSession);
#endif
#ifndef QT_NO_OPENSSL
        // Set the QSslConfiguration from this QNetworkRequest.
        if (ssl && incomingSslConfiguration != QSslConfiguration::defaultConfiguration()) {
            httpConnection->setSslConfiguration(incomingSslConfiguration);
        }
#endif

#ifndef QT_NO_NETWORKPROXY
        httpConnection->setTransparentProxy(transparentProxy);
        httpConnection->setCacheProxy(cacheProxy);
#endif

        // cache the QHttpNetworkConnection corresponding to this cache key
        connections.localData()->addEntry(cacheKey, httpConnection);
    }


    // Send the request to the connection
    httpReply = httpConnection->sendRequest(httpRequest);
    httpReply->setParent(this);

    // Connect the reply signals that we need to handle and then forward
    if (synchronous) {
        connect(httpReply,SIGNAL(headerChanged()), this, SLOT(synchronousHeaderChangedSlot()));
        connect(httpReply,SIGNAL(finished()), this, SLOT(synchronousFinishedSlot()));
        connect(httpReply,SIGNAL(finishedWithError(QNetworkReply::NetworkError, const QString)),
                this, SLOT(synchronousFinishedWithErrorSlot(QNetworkReply::NetworkError,QString)));

        connect(httpReply, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)),
                this, SLOT(synchronousAuthenticationRequiredSlot(QHttpNetworkRequest,QAuthenticator*)));
        connect(httpReply, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
                this, SLOT(synchronousProxyAuthenticationRequiredSlot(QNetworkProxy,QAuthenticator*)));

        // Don't care about ignored SSL errors for now in the synchronous HTTP case.
    } else if (!synchronous) {
        connect(httpReply,SIGNAL(headerChanged()), this, SLOT(headerChangedSlot()));
        connect(httpReply,SIGNAL(finished()), this, SLOT(finishedSlot()));
        connect(httpReply,SIGNAL(finishedWithError(QNetworkReply::NetworkError, const QString)),
                this, SLOT(finishedWithErrorSlot(QNetworkReply::NetworkError,QString)));
        // some signals are only interesting when normal asynchronous style is used
        connect(httpReply,SIGNAL(readyRead()), this, SLOT(readyReadSlot()));
        connect(httpReply,SIGNAL(dataReadProgress(int, int)), this, SLOT(dataReadProgressSlot(int,int)));
        connect(httpReply, SIGNAL(cacheCredentials(QHttpNetworkRequest,QAuthenticator*)),
                this, SLOT(cacheCredentialsSlot(QHttpNetworkRequest,QAuthenticator*)));
#ifndef QT_NO_OPENSSL
        connect(httpReply,SIGNAL(sslErrors(const QList<QSslError>)), this, SLOT(sslErrorsSlot(QList<QSslError>)));
#endif

        // In the asynchronous HTTP case we can just forward those signals
        // Connect the reply signals that we can directly forward
        connect(httpReply, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)),
                this, SIGNAL(authenticationRequired(QHttpNetworkRequest,QAuthenticator*)));
        connect(httpReply, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)),
                this, SIGNAL(proxyAuthenticationRequired(QNetworkProxy,QAuthenticator*)));
    }
}

// This gets called from the user thread or by the synchronous HTTP timeout timer
void QHttpThreadDelegate::abortRequest()
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::abortRequest() thread=" << QThread::currentThreadId() << "sync=" << synchronous;
#endif
    if (httpReply) {
        delete httpReply;
        httpReply = 0;
    }

    // Got aborted by the timeout timer
    if (synchronous) {
        incomingErrorCode = QNetworkReply::TimeoutError;
        QMetaObject::invokeMethod(synchronousRequestLoop, "quit", Qt::QueuedConnection);
    } else {
        //only delete this for asynchronous mode or QNetworkAccessHttpBackend will crash - see QNetworkAccessHttpBackend::postRequest()
        this->deleteLater();
    }
}

void QHttpThreadDelegate::readyReadSlot()
{
    // Don't do in zerocopy case
    if (!downloadBuffer.isNull())
        return;

    while (httpReply->readAnyAvailable()) {
        pendingDownloadData->fetchAndAddRelease(1);
        emit downloadData(httpReply->readAny());
    }
}

void QHttpThreadDelegate::finishedSlot()
{
    if (!httpReply) {
        qWarning() << "QHttpThreadDelegate::finishedSlot: HTTP reply had already been deleted, internal problem. Please report.";
        return;
    }
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::finishedSlot() thread=" << QThread::currentThreadId() << "result=" << httpReply->statusCode();
#endif

    // If there is still some data left emit that now
    while (httpReply->readAnyAvailable()) {
        pendingDownloadData->fetchAndAddRelease(1);
        emit downloadData(httpReply->readAny());
    }

#ifndef QT_NO_OPENSSL
    if (ssl)
        emit sslConfigurationChanged(httpReply->sslConfiguration());
#endif

    if (httpReply->statusCode() >= 400) {
            // it's an error reply
            QString msg = QLatin1String(QT_TRANSLATE_NOOP("QNetworkReply",
                                                          "Error downloading %1 - server replied: %2"));
            msg = msg.arg(QString::fromAscii(httpRequest.url().toEncoded()), httpReply->reasonPhrase());
            emit error(statusCodeFromHttp(httpReply->statusCode(), httpRequest.url()), msg);
        }

    emit downloadFinished();

    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
    QMetaObject::invokeMethod(this, "deleteLater", Qt::QueuedConnection);
    httpReply = 0;
}

void QHttpThreadDelegate::synchronousFinishedSlot()
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::synchronousFinishedSlot() thread=" << QThread::currentThreadId() << "result=" << httpReply->statusCode();
#endif
    if (httpReply->statusCode() >= 400) {
            // it's an error reply
            QString msg = QLatin1String(QT_TRANSLATE_NOOP("QNetworkReply",
                                                          "Error downloading %1 - server replied: %2"));
            incomingErrorDetail = msg.arg(QString::fromAscii(httpRequest.url().toEncoded()), httpReply->reasonPhrase());
            incomingErrorCode = statusCodeFromHttp(httpReply->statusCode(), httpRequest.url());
    }

    synchronousDownloadData = httpReply->readAll();

    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
    QMetaObject::invokeMethod(synchronousRequestLoop, "quit", Qt::QueuedConnection);
    httpReply = 0;
}

void QHttpThreadDelegate::finishedWithErrorSlot(QNetworkReply::NetworkError errorCode, const QString &detail)
{
    if (!httpReply) {
        qWarning() << "QHttpThreadDelegate::finishedWithErrorSlot: HTTP reply had already been deleted, internal problem. Please report.";
        return;
    }
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::finishedWithErrorSlot() thread=" << QThread::currentThreadId() << "error=" << errorCode << detail;
#endif

#ifndef QT_NO_OPENSSL
    if (ssl)
        emit sslConfigurationChanged(httpReply->sslConfiguration());
#endif
    emit error(errorCode,detail);
    emit downloadFinished();


    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
    QMetaObject::invokeMethod(this, "deleteLater", Qt::QueuedConnection);
    httpReply = 0;
}


void QHttpThreadDelegate::synchronousFinishedWithErrorSlot(QNetworkReply::NetworkError errorCode, const QString &detail)
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::synchronousFinishedWithErrorSlot() thread=" << QThread::currentThreadId() << "error=" << errorCode << detail;
#endif
    incomingErrorCode = errorCode;
    incomingErrorDetail = detail;

    QMetaObject::invokeMethod(httpReply, "deleteLater", Qt::QueuedConnection);
    QMetaObject::invokeMethod(synchronousRequestLoop, "quit", Qt::QueuedConnection);
    httpReply = 0;
}

static void downloadBufferDeleter(char *ptr)
{
    delete[] ptr;
}

void QHttpThreadDelegate::headerChangedSlot()
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::headerChangedSlot() thread=" << QThread::currentThreadId();
#endif

#ifndef QT_NO_OPENSSL
    if (ssl)
        emit sslConfigurationChanged(httpReply->sslConfiguration());
#endif

    // Is using a zerocopy buffer allowed by user and possible with this reply?
    if (httpReply->supportsUserProvidedDownloadBuffer()
        && downloadBufferMaximumSize > 0) {
        char *buf = new char[httpReply->contentLength()]; // throws if allocation fails
        if (buf) {
            downloadBuffer = QSharedPointer<char>(buf, downloadBufferDeleter);
            httpReply->setUserProvidedDownloadBuffer(buf);
        }
    }

    // We fetch this into our own
    incomingHeaders = httpReply->header();
    incomingStatusCode = httpReply->statusCode();
    incomingReasonPhrase = httpReply->reasonPhrase();
    isPipeliningUsed = httpReply->isPipeliningUsed();
    incomingContentLength = httpReply->contentLength();

    emit downloadMetaData(incomingHeaders,
                          incomingStatusCode,
                          incomingReasonPhrase,
                          isPipeliningUsed,
                          downloadBuffer,
                          incomingContentLength);
}

void QHttpThreadDelegate::synchronousHeaderChangedSlot()
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::synchronousHeaderChangedSlot() thread=" << QThread::currentThreadId();
#endif
    // Store the information we need in this object, the QNetworkAccessHttpBackend will later read it
    incomingHeaders = httpReply->header();
    incomingStatusCode = httpReply->statusCode();
    incomingReasonPhrase = httpReply->reasonPhrase();
    isPipeliningUsed = httpReply->isPipeliningUsed();
    incomingContentLength = httpReply->contentLength();
}


void QHttpThreadDelegate::dataReadProgressSlot(int done, int total)
{
    // If we don't have a download buffer don't attempt to go this codepath
    // It is not used by QNetworkAccessHttpBackend
    if (downloadBuffer.isNull())
        return;

    pendingDownloadProgress->fetchAndAddRelease(1);
    emit downloadProgress(done, total);
}

void QHttpThreadDelegate::cacheCredentialsSlot(const QHttpNetworkRequest &request, QAuthenticator *authenticator)
{
    authenticationManager->cacheCredentials(request.url(), authenticator);
}


#ifndef QT_NO_OPENSSL
void QHttpThreadDelegate::sslErrorsSlot(const QList<QSslError> &errors)
{
    emit sslConfigurationChanged(httpReply->sslConfiguration());

    bool ignoreAll = false;
    QList<QSslError> specificErrors;
    emit sslErrors(errors, &ignoreAll, &specificErrors);
    if (ignoreAll)
        httpReply->ignoreSslErrors();
    if (!specificErrors.isEmpty())
        httpReply->ignoreSslErrors(specificErrors);
}
#endif

void QHttpThreadDelegate::synchronousAuthenticationRequiredSlot(const QHttpNetworkRequest &request, QAuthenticator *a)
{
    Q_UNUSED(request);
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::synchronousAuthenticationRequiredSlot() thread=" << QThread::currentThreadId();
#endif

    // Ask the credential cache
    QNetworkAuthenticationCredential credential = authenticationManager->fetchCachedCredentials(httpRequest.url(), a);
    if (!credential.isNull()) {
        a->setUser(credential.user);
        a->setPassword(credential.password);
    }

    // Disconnect this connection now since we only want to ask the authentication cache once.
    QObject::disconnect(this, SLOT(synchronousAuthenticationRequiredSlot(QHttpNetworkRequest,QAuthenticator*)));
}

#ifndef QT_NO_NETWORKPROXY
void  QHttpThreadDelegate::synchronousProxyAuthenticationRequiredSlot(const QNetworkProxy &p, QAuthenticator *a)
{
#ifdef QHTTPTHREADDELEGATE_DEBUG
    qDebug() << "QHttpThreadDelegate::synchronousProxyAuthenticationRequiredSlot() thread=" << QThread::currentThreadId();
#endif
    // Ask the credential cache
    QNetworkAuthenticationCredential credential = authenticationManager->fetchCachedProxyCredentials(p, a);
    if (!credential.isNull()) {
        a->setUser(credential.user);
        a->setPassword(credential.password);
    }

    // Disconnect this connection now since we only want to ask the authentication cache once.
    QObject::disconnect(this, SLOT(synchronousProxyAuthenticationRequiredSlot(QNetworkProxy,QAuthenticator*)));
}

#endif

#endif // QT_NO_HTTP

QT_END_NAMESPACE