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qnetworksession.cpp

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39 -

40 #include "qnetworksession.h" -

41 #include "qnetworksession_p.h" -

42 #include "qbearerengine_p.h" -

43 -

44 #include <QEventLoop> -

45 #include <QMetaMethod> -

46 #include <QTimer> -

47 #include <QThread> -

48 -

49 #include "qnetworkconfigmanager_p.h" -

50 -

51 // for QNetworkSession::interface -

52 #ifdef interface -

53 # undef interface -

54 #endif -

55 -

56 #ifndef QT_NO_BEARERMANAGEMENT -

57 -

58 QT_BEGIN_NAMESPACE -

59 -

60 /*! -

61 \class QNetworkSession -

62 -

63 \brief The QNetworkSession class provides control over the system's access points -

64 and enables session management for cases when multiple clients access the same access point. -

65 -

66 \since 4.7 -

67 -

68 \inmodule QtNetwork -

69 \ingroup network -

70 -

71 A QNetworkSession enables control over the system's network interfaces. The session's configuration -

72 parameter are determined via the QNetworkConfiguration object to which it is bound. Depending on the -

73 type of the session (single access point or service network) a session may be linked to one or more -

74 network interfaces. By means of \l{open()}{opening} and \l{close()}{closing} of network sessions -

75 a developer can start and stop the systems network interfaces. If the configuration represents -

76 multiple access points (see \l QNetworkConfiguration::ServiceNetwork) more advanced features such as roaming may be supported. -

77 -

78 QNetworkSession supports session management within the same process and depending on the platform's -

79 capabilities may support out-of-process sessions. If the same -

80 network configuration is used by multiple open sessions the underlying network interface is only terminated once -

81 the last session has been closed. -

82 -

83 \section1 Roaming -

84 -

85 Applications may connect to the preferredConfigurationChanged() signal in order to -

86 receive notifications when a more suitable access point becomes available. -

87 In response to this signal the application must either initiate the roaming via migrate() -

88 or ignore() the new access point. Once the session has roamed the -

89 newConfigurationActivated() signal is emitted. The application may now test the -

90 carrier and must either accept() or reject() it. The session will return to the previous -

91 access point if the roaming was rejected. The subsequent state diagram depicts the required -

92 state transitions. -

93 -

94 \image roaming-states.png -

95 -

96 Some platforms may distinguish forced roaming and application level roaming (ALR). -

97 ALR implies that the application controls (via migrate(), ignore(), accept() and reject()) -

98 whether a network session can roam from one access point to the next. Such control is useful -

99 if the application maintains stateful socket connections and wants to control the transition from -

100 one interface to the next. Forced roaming implies that the system automatically roams to the next network without -

101 consulting the application. This has the advantage that the application can make use of roaming features -

102 without actually being aware of it. It is expected that the application detects that the underlying -

103 socket is broken and automatically reconnects via the new network link. -

104 -

105 If the platform supports both modes of roaming, an application indicates its preference -

106 by connecting to the preferredConfigurationChanged() signal. Connecting to this signal means that -

107 the application wants to take control over the roaming behavior and therefore implies application -

108 level roaming. If the client does not connect to the preferredConfigurationChanged(), forced roaming -

109 is used. If forced roaming is not supported the network session will not roam by default. -

110 -

111 Some applications may want to suppress any form of roaming altogether. Possible use cases may be -

112 high priority downloads or remote services which cannot handle a roaming enabled client. Clients -

113 can suppress roaming by connecting to the preferredConfigurationChanged() signal and answer each -

114 signal emission with ignore(). -

115 -

116 \sa QNetworkConfiguration, QNetworkConfigurationManager -

117 */ -

118 -

119 /*! -

120 \enum QNetworkSession::State -

121 -

122 This enum describes the connectivity state of the session. If the session is based on a -

123 single access point configuration the state of the session is the same as the state of the -

124 associated network interface. -

125 -

126 \value Invalid The session is invalid due to an invalid configuration. This may -

127 happen due to a removed access point or a configuration that was -

128 invalid to begin with. -

129 \value NotAvailable The session is based on a defined but not yet discovered QNetworkConfiguration -

130 (see \l QNetworkConfiguration::StateFlag). -

131 \value Connecting The network session is being established. -

132 \value Connected The network session is connected. If the current process wishes to use this session -

133 it has to register its interest by calling open(). A network session -

134 is considered to be ready for socket operations if it isOpen() and connected. -

135 \value Closing The network session is in the process of being shut down. -

136 \value Disconnected The network session is not connected. The associated QNetworkConfiguration -

137 has the state QNetworkConfiguration::Discovered. -

138 \value Roaming The network session is roaming from one access point to another -

139 access point. -

140 */ -

141 -

142 /*! -

143 \enum QNetworkSession::SessionError -

144 -

145 This enum describes the session errors that can occur. -

146 -

147 \value UnknownSessionError An unidentified error occurred. -

148 \value SessionAbortedError The session was aborted by the user or system. -

149 \value RoamingError The session cannot roam to a new configuration. -

150 \value OperationNotSupportedError The operation is not supported for current configuration. -

151 \value InvalidConfigurationError The operation cannot currently be performed for the -

152 current configuration. -

153 */ -

154 -

155 /*! -

156 \enum QNetworkSession::UsagePolicy -

157 \since 5.0 -

158 -

159 These flags allow the system to inform the application of network usage restrictions that -

160 may be in place. -

161 -

162 \value NoPolicy No policy in force, usage is unrestricted. -

163 \value NoBackgroundTrafficPolicy Background network traffic (not user initiated) should be avoided -

164 for example to save battery or data charges -

165 */ -

166 -

167 /*! -

168 \fn void QNetworkSession::stateChanged(QNetworkSession::State state) -

169 -

170 This signal is emitted whenever the state of the network session changes. -

171 The \a state parameter is the new state. -

172 -

173 \sa state() -

174 */ -

175 -

176 /*! -

177 \fn void QNetworkSession::error(QNetworkSession::SessionError error) -

178 -

179 This signal is emitted after an error occurred. The \a error parameter -

180 describes the error that occurred. -

181 -

182 \sa error(), errorString() -

183 */ -

184 -

185 /*! -

186 \fn void QNetworkSession::preferredConfigurationChanged(const QNetworkConfiguration &config, bool isSeamless) -

187 -

188 This signal is emitted when the preferred configuration/access point for the -

189 session changes. Only sessions which are based on service network configurations -

190 may emit this signal. \a config can be used to determine access point specific -

191 details such as proxy settings and \a isSeamless indicates whether roaming will -

192 break the sessions IP address. -

193 -

194 As a consequence to this signal the application must either start the roaming process -

195 by calling migrate() or choose to ignore() the new access point. -

196 -

197 If the roaming process is non-seamless the IP address will change which means that -

198 a socket becomes invalid. However seamless mobility can ensure that the local IP address -

199 does not change. This is achieved by using a virtual IP address which is bound to the actual -

200 link address. During the roaming process the virtual address is attached to the new link -

201 address. -

202 -

203 Some platforms may support the concept of Forced Roaming and Application Level Roaming (ALR). -

204 Forced roaming implies that the platform may simply roam to a new configuration without -

205 consulting applications. It is up to the application to detect the link layer loss and reestablish -

206 its sockets. In contrast ALR provides the opportunity to prevent the system from roaming. -

207 If this session is based on a configuration that supports roaming the application can choose -

208 whether it wants to be consulted (ALR use case) by connecting to this signal. For as long as this signal -

209 connection remains the session remains registered as a roaming stakeholder; otherwise roaming will -

210 be enforced by the platform. -

211 -

212 \sa migrate(), ignore(), QNetworkConfiguration::isRoamingAvailable() -

213 */ -

214 -

215 /*! -

216 \fn void QNetworkSession::newConfigurationActivated() -

217 -

218 This signal is emitted once the session has roamed to the new access point. -

219 The application may reopen its socket and test the suitability of the new network link. -

220 Subsequently it must either accept() or reject() the new access point. -

221 -

222 \sa accept(), reject() -

223 */ -

224 -

225 /*! -

226 \fn void QNetworkSession::opened() -

227 -

228 This signal is emitted when the network session has been opened. -

229 -

230 The underlying network interface will not be shut down as long as the session remains open. -

231 Note that this feature is dependent on \l{QNetworkConfigurationManager::SystemSessionSupport}{system wide session support}. -

232 */ -

233 -

234 /*! -

235 \fn void QNetworkSession::closed() -

236 -

237 This signal is emitted when the network session has been closed. -

238 */ -

239 -

240 /*! -

241 \fn void QNetworkSession::usagePoliciesChanged(QNetworkSession::UsagePolicies usagePolicies) -

242 \since 5.0 -

243 -

244 This signal is emitted when the \a usagePolicies in force are changed by the system. -

245 */ -

246 -

247 /*! -

248 Constructs a session based on \a connectionConfig with the given \a parent. -

249 -

250 \sa QNetworkConfiguration -

251 */ -

252 QNetworkSession::QNetworkSession(const QNetworkConfiguration &connectionConfig, QObject *parent) -

253 : QObject(parent), d(0) -

254 { -

255 // invalid configuration -

256

if (!connectionConfig.identifier().isEmpty()) {

!connectionCon...er().isEmpty()	Description
TRUE	evaluated 78 times by 15 tests Evaluated by: tst_NetworkSelfTest tst_QAbstractNetworkCache tst_QFtp tst_QHostInfo tst_QHttpNetworkConnection tst_QNetworkAccessManager tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkDiskCache tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QTcpServer tst_QUdpSocket tst_QXmlInputSource tst_Spdy
FALSE	evaluated 2 times by 1 test Evaluated by: tst_QNetworkSession

2-78

257 const auto engines = qNetworkConfigurationManagerPrivate()->engines(); -

258 for (QBearerEngine *engine : engines) { -

259

if (engine->hasIdentifier(connectionConfig.identifier())) {

engine->hasIde....identifier())	Description
TRUE	evaluated 78 times by 15 tests Evaluated by: tst_NetworkSelfTest tst_QAbstractNetworkCache tst_QFtp tst_QHostInfo tst_QHttpNetworkConnection tst_QNetworkAccessManager tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkDiskCache tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QTcpServer tst_QUdpSocket tst_QXmlInputSource tst_Spdy
FALSE	evaluated 8 times by 2 tests Evaluated by: tst_QNetworkProxyFactory tst_QNetworkSession

8-78

260 d = engine->createSessionBackend(); -

261 d->q = this; -

262 d->publicConfig = connectionConfig; -

263 d->syncStateWithInterface(); -

264 connect(d, SIGNAL(quitPendingWaitsForOpened()), this, SIGNAL(opened())); -

265 connect(d, SIGNAL(error(QNetworkSession::SessionError)), -

266 this, SIGNAL(error(QNetworkSession::SessionError))); -

267 connect(d, SIGNAL(stateChanged(QNetworkSession::State)), -

268 this, SIGNAL(stateChanged(QNetworkSession::State))); -

269 connect(d, SIGNAL(closed()), this, SIGNAL(closed())); -

270 connect(d, SIGNAL(preferredConfigurationChanged(QNetworkConfiguration,bool)), -

271 this, SIGNAL(preferredConfigurationChanged(QNetworkConfiguration,bool))); -

272 connect(d, SIGNAL(newConfigurationActivated()), -

273 this, SIGNAL(newConfigurationActivated())); -

274 connect(d, SIGNAL(usagePoliciesChanged(QNetworkSession::UsagePolicies)), -

275 this, SIGNAL(usagePoliciesChanged(QNetworkSession::UsagePolicies))); -

276

break;

executed 78 times by 15 tests: break;

Executed by:

tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QFtp
tst_QHostInfo
tst_QHttpNetworkConnection
tst_QNetworkAccessManager
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QTcpServer
tst_QUdpSocket
tst_QXmlInputSource
tst_Spdy

277 } -

278

}

executed 8 times by 2 tests: end of block

Executed by:

tst_QNetworkProxyFactory
tst_QNetworkSession

279

}

executed 78 times by 15 tests: end of block

Executed by:

tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QFtp
tst_QHostInfo
tst_QHttpNetworkConnection
tst_QNetworkAccessManager
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QTcpServer
tst_QUdpSocket
tst_QXmlInputSource
tst_Spdy

280 -

281 qRegisterMetaType<QNetworkSession::State>(); -

282 qRegisterMetaType<QNetworkSession::SessionError>(); -

283 qRegisterMetaType<QNetworkSession::UsagePolicies>(); -

284

}

executed 80 times by 15 tests: end of block

Executed by:

tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QFtp
tst_QHostInfo
tst_QHttpNetworkConnection
tst_QNetworkAccessManager
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QTcpServer
tst_QUdpSocket
tst_QXmlInputSource
tst_Spdy

285 -

286 /*! -

287 Frees the resources associated with the QNetworkSession object. -

288 */ -

289 QNetworkSession::~QNetworkSession() -

290 { -

291 delete d; -

292

}

executed 70 times by 12 tests: end of block

Executed by:

tst_QAbstractNetworkCache
tst_QFtp
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkSession
tst_Spdy
tst_networkselftest - unknown status
tst_qabstractnetworkcache - unknown status
tst_qhostinfo - unknown status
tst_qtcpserver - unknown status
tst_qudpsocket - unknown status

293 -

294 /*! -

295 Creates an open session which increases the session counter on the underlying network interface. -

296 The system will not terminate a network interface until the session reference counter reaches zero. -

297 Therefore an open session allows an application to register its use of the interface. -

298 -

299 As a result of calling open() the interface will be started if it is not connected/up yet. -

300 Some platforms may not provide support for out-of-process sessions. On such platforms the session -

301 counter ignores any sessions held by another process. The platform capabilities can be -

302 detected via QNetworkConfigurationManager::capabilities(). -

303 -

304 Note that this call is asynchronous. Depending on the outcome of this call the results can be enquired -

305 by connecting to the stateChanged(), opened() or error() signals. -

306 -

307 It is not a requirement to open a session in order to monitor the underlying network interface. -

308 -

309 \sa close(), stop(), isOpen() -

310 */ -

311 void QNetworkSession::open() -

312 { -

313

if (d)

d	Description
TRUE	evaluated 70 times by 11 tests Evaluated by: tst_NetworkSelfTest tst_QAbstractNetworkCache tst_QFtp tst_QHostInfo tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QTcpServer tst_QUdpSocket tst_Spdy
FALSE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession

1-70

314

d->open();

executed 70 times by 11 tests: d->open();

Executed by:

tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QFtp
tst_QHostInfo
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QTcpServer
tst_QUdpSocket
tst_Spdy

315 else -

316

emit error(InvalidConfigurationError);

executed 1 time by 1 test: error(InvalidConfigurationError);

Executed by:

tst_QNetworkSession

317 } -

318 -

319 /*! -

320 Waits until the session has been opened, up to \a msecs milliseconds. If the session has been opened, this -

321 function returns \c true; otherwise it returns \c false. In the case where it returns \c false, you can call error() -

322 to determine the cause of the error. -

323 -

324 The following example waits up to one second for the session to be opened: -

325 -

326 \code -

327 session->open(); -

328 if (session->waitForOpened(1000)) -

329 qDebug("Open!"); -

330 \endcode -

331 -

332 If \a msecs is -1, this function will not time out. -

333 -

334 \sa open(), error() -

335 */ -

336 bool QNetworkSession::waitForOpened(int msecs) -

337 { -

338

if (!d)

!d	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession
FALSE	evaluated 11 times by 9 tests Evaluated by: tst_NetworkSelfTest tst_QAbstractNetworkCache tst_QFtp tst_QHostInfo tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QTcpServer tst_QUdpSocket

1-11

339

return false;

executed 1 time by 1 test: return false;

Executed by:

tst_QNetworkSession

340 -

341

if (d->isOpen)

d->isOpen	Description
TRUE	evaluated 11 times by 9 tests Evaluated by: tst_NetworkSelfTest tst_QAbstractNetworkCache tst_QFtp tst_QHostInfo tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QTcpServer tst_QUdpSocket
FALSE	never evaluated

0-11

342

return true;

executed 11 times by 9 tests: return true;

Executed by:

tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QFtp
tst_QHostInfo
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QTcpServer
tst_QUdpSocket

343 -

344

if (!(d->state == Connecting || d->state == Connected)) {

d->state == Connecting	Description
TRUE	never evaluated
FALSE	never evaluated

d->state == Connected	Description
TRUE	never evaluated
FALSE	never evaluated

345

return false;

never executed: return false;

346 } -

347 -

348 QEventLoop loop; -

349 QObject::connect(d, SIGNAL(quitPendingWaitsForOpened()), &loop, SLOT(quit())); -

350 QObject::connect(this, SIGNAL(error(QNetworkSession::SessionError)), &loop, SLOT(quit())); -

351 -

352 //final call -

353

if (msecs >= 0)

msecs >= 0	Description
TRUE	never evaluated
FALSE	never evaluated

354

QTimer::singleShot(msecs, &loop, SLOT(quit()));

never executed: QTimer::singleShot(msecs, &loop, qFlagLocation("1""quit()" "\0" __FILE__ ":" "354"));

355 -

356 // enter the event loop and wait for opened/error/timeout -

357 loop.exec(QEventLoop::ExcludeUserInputEvents | QEventLoop::WaitForMoreEvents); -

358 -

359

return d->isOpen;

never executed: return d->isOpen;

360 } -

361 -

362 /*! -

363 Decreases the session counter on the associated network configuration. If the session counter reaches zero -

364 the active network interface is shut down. This also means that state() will only change from \l Connected to -

365 \l Disconnected if the current session was the last open session. -

366 -

367 If the platform does not support out-of-process sessions calling this function does not stop the -

368 interface. In this case \l{stop()} has to be used to force a shut down. -

369 The platform capabilities can be detected via QNetworkConfigurationManager::capabilities(). -

370 -

371 Note that this call is asynchronous. Depending on the outcome of this call the results can be enquired -

372 by connecting to the stateChanged(), opened() or error() signals. -

373 -

374 \sa open(), stop(), isOpen() -

375 */ -

376 void QNetworkSession::close() -

377 { -

378

if (d)

d	Description
TRUE	evaluated 4 times by 1 test Evaluated by: tst_QNetworkReply
FALSE	never evaluated

0-4

379

d->close();

executed 4 times by 1 test: d->close();

Executed by:

tst_QNetworkReply

380

}

executed 4 times by 1 test: end of block

Executed by:

tst_QNetworkReply

381 -

382 /*! -

383 Invalidates all open sessions against the network interface and therefore stops the -

384 underlying network interface. This function always changes the session's state() flag to -

385 \l Disconnected. -

386 -

387 \sa open(), close() -

388 */ -

389 void QNetworkSession::stop() -

390 { -

391

if (d)

d	Description
TRUE	never evaluated
FALSE	never evaluated

392

d->stop();

never executed: d->stop();

393

}

never executed: end of block

394 -

395 /*! -

396 Returns the QNetworkConfiguration that this network session object is based on. -

397 -

398 \sa QNetworkConfiguration -

399 */ -

400 QNetworkConfiguration QNetworkSession::configuration() const -

401 { -

402

return d ? d->publicConfig : QNetworkConfiguration();

executed 138 times by 4 tests: return d ? d->publicConfig : QNetworkConfiguration();

Executed by:

tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession

138

403 } -

404 -

405 #ifndef QT_NO_NETWORKINTERFACE -

406 /*! -

407 Returns the network interface that is used by this session. -

408 -

409 This function only returns a valid QNetworkInterface when this session is \l Connected. -

410 -

411 The returned interface may change as a result of a roaming process. -

412 -

413 \sa state() -

414 */ -

415 QNetworkInterface QNetworkSession::interface() const -

416 { -

417

return d ? d->currentInterface() : QNetworkInterface();

executed 4 times by 1 test: return d ? d->currentInterface() : QNetworkInterface();

Executed by:

tst_QNetworkSession

418 } -

419 #endif -

420 -

421 /*! -

422 Returns \c true if this session is open. If the number of all open sessions is greater than -

423 zero the underlying network interface will remain connected/up. -

424 -

425 The session can be controlled via open() and close(). -

426 */ -

427 bool QNetworkSession::isOpen() const -

428 { -

429

return d ? d->isOpen : false;

executed 1297 times by 10 tests: return d ? d->isOpen : false;

Executed by:

tst_NetworkSelfTest
tst_QAbstractNetworkCache
tst_QFtp
tst_QHostInfo
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QUdpSocket
tst_Spdy

1297

430 } -

431 -

432 /*! -

433 Returns the state of the session. -

434 -

435 If the session is based on a single access point configuration the state of the -

436 session is the same as the state of the associated network interface. Therefore -

437 a network session object can be used to monitor network interfaces. -

438 -

439 A \l QNetworkConfiguration::ServiceNetwork based session summarizes the state of all its children -

440 and therefore returns the \l Connected state if at least one of the service network's -

441 \l {QNetworkConfiguration::children()}{children()} configurations is active. -

442 -

443 Note that it is not required to hold an open session in order to obtain the network interface state. -

444 A connected but closed session may be used to monitor network interfaces whereas an open and connected -

445 session object may prevent the network interface from being shut down. -

446 -

447 \sa error(), stateChanged() -

448 */ -

449 QNetworkSession::State QNetworkSession::state() const -

450 { -

451

return d ? d->state : QNetworkSession::Invalid;

executed 2087 times by 10 tests: return d ? d->state : QNetworkSession::Invalid;

Executed by:

tst_QAbstractNetworkCache
tst_QHttpNetworkConnection
tst_QNetworkAccessManager
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QXmlInputSource
tst_Spdy

2087

452 } -

453 -

454 /*! -

455 Returns the type of error that last occurred. -

456 -

457 \sa state(), errorString() -

458 */ -

459 QNetworkSession::SessionError QNetworkSession::error() const -

460 { -

461

return d ? d->error() : InvalidConfigurationError;

executed 2 times by 1 test: return d ? d->error() : InvalidConfigurationError;

Executed by:

tst_QNetworkSession

462 } -

463 -

464 /*! -

465 Returns a human-readable description of the last device error that -

466 occurred. -

467 -

468 \sa error() -

469 */ -

470 QString QNetworkSession::errorString() const -

471 { -

472

return d ? d->errorString() : tr("Invalid configuration.");

never executed: return d ? d->errorString() : tr("Invalid configuration.");

473 } -

474 -

475 /*! -

476 Returns the value for property \a key. -

477 -

478 A network session can have properties attached which may describe the session in more details. -

479 This function can be used to gain access to those properties. -

480 -

481 The following property keys are guaranteed to be specified on all platforms: -

482 -

483 \table 80% -

484 \header -

485 \li Key \li Description -

486 \row -

487 \li ActiveConfiguration -

488 \li If the session \l isOpen() this property returns the identifier of the -

489 QNetworkConfiguration that is used by this session; otherwise an empty string. -

490 -

491 The main purpose of this key is to determine which Internet access point is used -

492 if the session is based on a \l{QNetworkConfiguration::ServiceNetwork}{ServiceNetwork}. -

493 The following code snippet highlights the difference: -

494 \code -

495 QNetworkConfigurationManager mgr; -

496 QNetworkConfiguration ap = mgr.defaultConfiguration(); -

497 QNetworkSession *session = new QNetworkSession(ap); -

498 ... //code activates session -

499 -

500 QString ident = session->sessionProperty("ActiveConfiguration").toString(); -

501 if ( ap.type() == QNetworkConfiguration::ServiceNetwork ) { -

502 Q_ASSERT( ap.identifier() != ident ); -

503 Q_ASSERT( ap.children().contains( mgr.configurationFromIdentifier(ident) ) ); -

504 } else if ( ap.type() == QNetworkConfiguration::InternetAccessPoint ) { -

505 Q_ASSERT( ap.identifier() == ident ); -

506 } -

507 \endcode -

508 \row -

509 \li UserChoiceConfiguration -

510 \li If the session \l isOpen() and is bound to a QNetworkConfiguration of type -

511 UserChoice, this property returns the identifier of the QNetworkConfiguration that the -

512 configuration resolved to when \l open() was called; otherwise an empty string. -

513 -

514 The purpose of this key is to determine the real QNetworkConfiguration that the -

515 session is using. This key is different from \e ActiveConfiguration in that -

516 this key may return an identifier for either a -

517 \l {QNetworkConfiguration::ServiceNetwork}{service network} or a -

518 \l {QNetworkConfiguration::InternetAccessPoint}{Internet access points} configurations, -

519 whereas \e ActiveConfiguration always returns identifiers to -

520 \l {QNetworkConfiguration::InternetAccessPoint}{Internet access points} configurations. -

521 \row -

522 \li ConnectInBackground -

523 \li Setting this property to \e true before calling \l open() implies that the connection attempt -

524 is made but if no connection can be established, the user is not connsulted and asked to select -

525 a suitable connection. This property is not set by default and support for it depends on the platform. -

526 -

527 \row -

528 \li AutoCloseSessionTimeout -

529 \li If the session requires polling to keep its state up to date, this property holds -

530 the timeout in milliseconds before the session will automatically close. If the -

531 value of this property is -1 the session will not automatically close. This property -

532 is set to -1 by default. -

533 -

534 The purpose of this property is to minimize resource use on platforms that use -

535 polling to update the state of the session. Applications can set the value of this -

536 property to the desired timeout before the session is closed. In response to the -

537 closed() signal the network session should be deleted to ensure that all polling is -

538 stopped. The session can then be recreated once it is required again. This property -

539 has no effect for sessions that do not require polling. -

540 \endtable -

541 */ -

542 QVariant QNetworkSession::sessionProperty(const QString &key) const -

543 { -

544

if (!d || !d->publicConfig.isValid())

!d	Description
TRUE	never evaluated
FALSE	evaluated 127 times by 3 tests Evaluated by: tst_QAbstractNetworkCache tst_QNetworkReply tst_QNetworkSession

!d->publicConfig.isValid()	Description
TRUE	never evaluated
FALSE	evaluated 127 times by 3 tests Evaluated by: tst_QAbstractNetworkCache tst_QNetworkReply tst_QNetworkSession

0-127

545

return QVariant();

never executed: return QVariant();

546 -

547

if (key == QLatin1String("ActiveConfiguration"))

key == QLatin1...onfiguration")	Description
TRUE	evaluated 116 times by 2 tests Evaluated by: tst_QAbstractNetworkCache tst_QNetworkReply
FALSE	evaluated 11 times by 2 tests Evaluated by: tst_QNetworkReply tst_QNetworkSession

11-116

548

return d->isOpen ? d->activeConfig.identifier() : QString();

executed 116 times by 2 tests: return d->isOpen ? d->activeConfig.identifier() : QString();

Executed by:

tst_QAbstractNetworkCache
tst_QNetworkReply

116

549 -

550

if (key == QLatin1String("UserChoiceConfiguration")) {

key == QLatin1...onfiguration")	Description
TRUE	never evaluated
FALSE	evaluated 11 times by 2 tests Evaluated by: tst_QNetworkReply tst_QNetworkSession

0-11

551

if (!d->isOpen || d->publicConfig.type() != QNetworkConfiguration::UserChoice)

!d->isOpen	Description
TRUE	never evaluated
FALSE	never evaluated

d->publicConfi...on::UserChoice	Description
TRUE	never evaluated
FALSE	never evaluated

552

return QString();

never executed: return QString();

553 -

554

if (d->serviceConfig.isValid())

d->serviceConfig.isValid()	Description
TRUE	never evaluated
FALSE	never evaluated

555

return d->serviceConfig.identifier();

never executed: return d->serviceConfig.identifier();

556 else -

557

return d->activeConfig.identifier();

never executed: return d->activeConfig.identifier();

558 } -

559 -

560

return d->sessionProperty(key);

executed 11 times by 2 tests: return d->sessionProperty(key);

Executed by:

tst_QNetworkReply
tst_QNetworkSession

561 } -

562 -

563 /*! -

564 Sets the property \a value on the session. The property is identified using -

565 \a key. Removing an already set property can be achieved by passing an -

566 invalid QVariant. -

567 -

568 Note that the \e UserChoiceConfiguration and \e ActiveConfiguration -

569 properties are read only and cannot be changed using this method. -

570 */ -

571 void QNetworkSession::setSessionProperty(const QString &key, const QVariant &value) -

572 { -

573

if (!d)

!d	Description
TRUE	never evaluated
FALSE	evaluated 61 times by 6 tests Evaluated by: tst_QAbstractNetworkCache tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_Spdy

0-61

574

return;

never executed: return;

575 -

576

if (key == QLatin1String("ActiveConfiguration") ||

key == QLatin1...onfiguration")	Description
TRUE	never evaluated
FALSE	evaluated 61 times by 6 tests Evaluated by: tst_QAbstractNetworkCache tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_Spdy

0-61

577

key == QLatin1String("UserChoiceConfiguration")) {

key == QLatin1...onfiguration")	Description
TRUE	never evaluated
FALSE	evaluated 61 times by 6 tests Evaluated by: tst_QAbstractNetworkCache tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_Spdy

0-61

578

return;

never executed: return;

579 } -

580 -

581 d->setSessionProperty(key, value); -

582

}

executed 61 times by 6 tests: end of block

Executed by:

tst_QAbstractNetworkCache
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_Spdy

583 -

584 /*! -

585 Instructs the session to roam to the new access point. The old access point remains active -

586 until the application calls accept(). -

587 -

588 The newConfigurationActivated() signal is emitted once roaming has been completed. -

589 -

590 \sa accept() -

591 */ -

592 void QNetworkSession::migrate() -

593 { -

594

if (d)

d	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession
FALSE	never evaluated

0-1

595

d->migrate();

executed 1 time by 1 test: d->migrate();

Executed by:

tst_QNetworkSession

596

}

executed 1 time by 1 test: end of block

Executed by:

tst_QNetworkSession

597 -

598 /*! -

599 This function indicates that the application does not wish to roam the session. -

600 -

601 \sa migrate() -

602 */ -

603 void QNetworkSession::ignore() -

604 { -

605

if (d)

d	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession
FALSE	never evaluated

0-1

606

d->ignore();

executed 1 time by 1 test: d->ignore();

Executed by:

tst_QNetworkSession

607

}

executed 1 time by 1 test: end of block

Executed by:

tst_QNetworkSession

608 -

609 /*! -

610 Instructs the session to permanently accept the new access point. Once this function -

611 has been called the session may not return to the old access point. -

612 -

613 The old access point may be closed in the process if there are no other network sessions for it. -

614 Therefore any open socket that still uses the old access point -

615 may become unusable and should be closed before completing the migration. -

616 */ -

617 void QNetworkSession::accept() -

618 { -

619

if (d)

d	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession
FALSE	never evaluated

0-1

620

d->accept();

executed 1 time by 1 test: d->accept();

Executed by:

tst_QNetworkSession

621

}

executed 1 time by 1 test: end of block

Executed by:

tst_QNetworkSession

622 -

623 /*! -

624 The new access point is not suitable for the application. By calling this function the -

625 session returns to the previous access point/configuration. This action may invalidate -

626 any socket that has been created via the not desired access point. -

627 -

628 \sa accept() -

629 */ -

630 void QNetworkSession::reject() -

631 { -

632

if (d)

d	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession
FALSE	never evaluated

0-1

633

d->reject();

executed 1 time by 1 test: d->reject();

Executed by:

tst_QNetworkSession

634

}

executed 1 time by 1 test: end of block

Executed by:

tst_QNetworkSession

635 -

636 -

637 /*! -

638 Returns the amount of data sent in bytes; otherwise 0. -

639 -

640 This field value includes the usage across all open network -

641 sessions which use the same network interface. -

642 -

643 If the session is based on a service network configuration the number of -

644 sent bytes across all active member configurations are returned. -

645 -

646 This function may not always be supported on all platforms and returns 0. -

647 The platform capability can be detected via QNetworkConfigurationManager::DataStatistics. -

648 -

649 \note On some platforms this function may run the main event loop. -

650 */ -

651 quint64 QNetworkSession::bytesWritten() const -

652 { -

653

return d ? d->bytesWritten() : Q_UINT64_C(0);

never executed: return d ? d->bytesWritten() : static_cast<unsigned long long>(0ULL);

654 } -

655 -

656 /*! -

657 Returns the amount of data received in bytes; otherwise 0. -

658 -

659 This field value includes the usage across all open network -

660 sessions which use the same network interface. -

661 -

662 If the session is based on a service network configuration the number of -

663 sent bytes across all active member configurations are returned. -

664 -

665 This function may not always be supported on all platforms and returns 0. -

666 The platform capability can be detected via QNetworkConfigurationManager::DataStatistics. -

667 -

668 \note On some platforms this function may run the main event loop. -

669 */ -

670 quint64 QNetworkSession::bytesReceived() const -

671 { -

672

return d ? d->bytesReceived() : Q_UINT64_C(0);

never executed: return d ? d->bytesReceived() : static_cast<unsigned long long>(0ULL);

673 } -

674 -

675 /*! -

676 Returns the number of seconds that the session has been active. -

677 */ -

678 quint64 QNetworkSession::activeTime() const -

679 { -

680

return d ? d->activeTime() : Q_UINT64_C(0);

never executed: return d ? d->activeTime() : static_cast<unsigned long long>(0ULL);

681 } -

682 -

683 /*! -

684 Returns the network usage policies currently in force by the system. -

685 */ -

686 QNetworkSession::UsagePolicies QNetworkSession::usagePolicies() const -

687 { -

688

return d ? d->usagePolicies() : QNetworkSession::NoPolicy;

executed 38 times by 2 tests: return d ? d->usagePolicies() : QNetworkSession::NoPolicy;

Executed by:

tst_QNetworkReply
tst_QNetworkSession

689 } -

690 -

691 /*! -

692 \internal -

693 Change usage policies for unit testing. -

694 In normal use, the policies are published by the bearer plugin -

695 */ -

696 void QNetworkSessionPrivate::setUsagePolicies(QNetworkSession &session, QNetworkSession::UsagePolicies policies) -

697 { -

698

if (!session.d)

!session.d	Description
TRUE	never evaluated
FALSE	evaluated 48 times by 2 tests Evaluated by: tst_QNetworkReply tst_QNetworkSession

0-48

699

return;

never executed: return;

700 session.d->setUsagePolicies(policies); -

701

}

executed 48 times by 2 tests: end of block

Executed by:

tst_QNetworkReply
tst_QNetworkSession

702 -

703 /*! -

704 \internal -

705 -

706 This function is required to detect whether the client wants to control -

707 the roaming process. If he connects to preferredConfigurationChanged() signal -

708 he intends to influence it. Otherwise QNetworkSession always roams -

709 without registering this session as a stakeholder in the roaming process. -

710 -

711 For more details check the Forced vs ALR roaming section in the QNetworkSession -

712 class description. -

713 */ -

714 void QNetworkSession::connectNotify(const QMetaMethod &signal) -

715 { -

716 QObject::connectNotify(signal); -

717 -

718

if (!d)

!d	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession
FALSE	evaluated 2284 times by 10 tests Evaluated by: tst_QAbstractNetworkCache tst_QHttpNetworkConnection tst_QNetworkAccessManager tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkDiskCache tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QXmlInputSource tst_Spdy

1-2284

719

return;

executed 1 time by 1 test: return;

Executed by:

tst_QNetworkSession

720 -

721 //check for preferredConfigurationChanged() signal connect notification -

722 //This is not required on all platforms -

723 static const QMetaMethod preferredConfigurationChangedSignal = -

724 QMetaMethod::fromSignal(&QNetworkSession::preferredConfigurationChanged); -

725

if (signal == preferredConfigurationChangedSignal)

signal == pref...nChangedSignal	Description
TRUE	never evaluated
FALSE	evaluated 2284 times by 10 tests Evaluated by: tst_QAbstractNetworkCache tst_QHttpNetworkConnection tst_QNetworkAccessManager tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkDiskCache tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QXmlInputSource tst_Spdy

0-2284

726

d->setALREnabled(true);

never executed: d->setALREnabled(true);

727

}

executed 2284 times by 10 tests: end of block

Executed by:

tst_QAbstractNetworkCache
tst_QHttpNetworkConnection
tst_QNetworkAccessManager
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QXmlInputSource
tst_Spdy

2284

728 -

729 /*! -

730 \internal -

731 -

732 This function is called when the client disconnects from the -

733 preferredConfigurationChanged() signal. -

734 -

735 \sa connectNotify() -

736 */ -

737 void QNetworkSession::disconnectNotify(const QMetaMethod &signal) -

738 { -

739 QObject::disconnectNotify(signal); -

740 -

741

if (!d)

!d	Description
TRUE	evaluated 1 time by 1 test Evaluated by: tst_QNetworkSession
FALSE	evaluated 2227 times by 11 tests Evaluated by: tst_QAbstractNetworkCache tst_QHttpNetworkConnection tst_QNetworkAccessManager tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkDiskCache tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QXmlInputSource tst_Spdy tst_spdy - unknown status

1-2227

742

return;

executed 1 time by 1 test: return;

Executed by:

tst_QNetworkSession

743 -

744 //check for preferredConfigurationChanged() signal disconnect notification -

745 //This is not required on all platforms -

746 static const QMetaMethod preferredConfigurationChangedSignal = -

747 QMetaMethod::fromSignal(&QNetworkSession::preferredConfigurationChanged); -

748

if (signal == preferredConfigurationChangedSignal)

signal == pref...nChangedSignal	Description
TRUE	never evaluated
FALSE	evaluated 2227 times by 11 tests Evaluated by: tst_QAbstractNetworkCache tst_QHttpNetworkConnection tst_QNetworkAccessManager tst_QNetworkAccessManager_And_QProgressDialog tst_QNetworkDiskCache tst_QNetworkProxyFactory tst_QNetworkReply tst_QNetworkSession tst_QXmlInputSource tst_Spdy tst_spdy - unknown status

0-2227

749

d->setALREnabled(false);

never executed: d->setALREnabled(false);

750

}

executed 2227 times by 11 tests: end of block

Executed by:

tst_QAbstractNetworkCache
tst_QHttpNetworkConnection
tst_QNetworkAccessManager
tst_QNetworkAccessManager_And_QProgressDialog
tst_QNetworkDiskCache
tst_QNetworkProxyFactory
tst_QNetworkReply
tst_QNetworkSession
tst_QXmlInputSource
tst_Spdy
tst_spdy - unknown status

2227

751 -

752 #include "moc_qnetworksession.cpp" -

753 -

754 QT_END_NAMESPACE -

755 -

756 #endif // QT_NO_BEARERMANAGEMENT -

Source code

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