/**************************************************************************** ** ** Copyright (C) 2010 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. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qnetworkreply.h" #include "qnetworkreply_p.h" #include QT_BEGIN_NAMESPACE QNetworkReplyPrivate::QNetworkReplyPrivate() : readBufferMaxSize(0), operation(QNetworkAccessManager::UnknownOperation), errorCode(QNetworkReply::NoError) { // set the default attribute values attributes.insert(QNetworkRequest::ConnectionEncryptedAttribute, false); } /*! \class QNetworkReply \since 4.4 \brief The QNetworkReply class contains the data and headers for a request sent with QNetworkAccessManager \reentrant \ingroup network \inmodule QtNetwork The QNetworkReply class contains the data and meta data related to a request posted with QNetworkAccessManager. Like QNetworkRequest, it contains a URL and headers (both in parsed and raw form), some information about the reply's state and the contents of the reply itself. QNetworkReply is a sequential-access QIODevice, which means that once data is read from the object, it no longer kept by the device. It is therefore the application's responsibility to keep this data if it needs to. Whenever more data is received from the network and processed, the readyRead() signal is emitted. The downloadProgress() signal is also emitted when data is received, but the number of bytes contained in it may not represent the actual bytes received, if any transformation is done to the contents (for example, decompressing and removing the protocol overhead). Even though QNetworkReply is a QIODevice connected to the contents of the reply, it also emits the uploadProgress() signal, which indicates the progress of the upload for operations that have such content. \note Do not delete the object in the slot connected to the error() or finished() signal. Use deleteLater(). \sa QNetworkRequest, QNetworkAccessManager */ /*! \enum QNetworkReply::NetworkError Indicates all possible error conditions found during the processing of the request. \value NoError no error condition. \note When the HTTP protocol returns a redirect no error will be reported. You can check if there is a redirect with the QNetworkRequest::RedirectionTargetAttribute attribute. \value ConnectionRefusedError the remote server refused the connection (the server is not accepting requests) \value RemoteHostClosedError the remote server closed the connection prematurely, before the entire reply was received and processed \value HostNotFoundError the remote host name was not found (invalid hostname) \value TimeoutError the connection to the remote server timed out \value OperationCanceledError the operation was canceled via calls to abort() or close() before it was finished. \value SslHandshakeFailedError the SSL/TLS handshake failed and the encrypted channel could not be established. The sslErrors() signal should have been emitted. \value TemporaryNetworkFailureError the connection was broken due to disconnection from the network, however the system has initiated roaming to another access point. The request should be resubmitted and will be processed as soon as the connection is re-established. \value ProxyConnectionRefusedError the connection to the proxy server was refused (the proxy server is not accepting requests) \value ProxyConnectionClosedError the proxy server closed the connection prematurely, before the entire reply was received and processed \value ProxyNotFoundError the proxy host name was not found (invalid proxy hostname) \value ProxyTimeoutError the connection to the proxy timed out or the proxy did not reply in time to the request sent \value ProxyAuthenticationRequiredError the proxy requires authentication in order to honour the request but did not accept any credentials offered (if any) \value ContentAccessDenied the access to the remote content was denied (similar to HTTP error 401) \value ContentOperationNotPermittedError the operation requested on the remote content is not permitted \value ContentNotFoundError the remote content was not found at the server (similar to HTTP error 404) \value AuthenticationRequiredError the remote server requires authentication to serve the content but the credentials provided were not accepted (if any) \value ContentReSendError the request needed to be sent again, but this failed for example because the upload data could not be read a second time. \value ProtocolUnknownError the Network Access API cannot honor the request because the protocol is not known \value ProtocolInvalidOperationError the requested operation is invalid for this protocol \value UnknownNetworkError an unknown network-related error was detected \value UnknownProxyError an unknown proxy-related error was detected \value UnknownContentError an unknown error related to the remote content was detected \value ProtocolFailure a breakdown in protocol was detected (parsing error, invalid or unexpected responses, etc.) \sa error() */ /*! \fn void QNetworkReply::sslErrors(const QList &errors) This signal is emitted if the SSL/TLS session encountered errors during the set up, including certificate verification errors. The \a errors parameter contains the list of errors. To indicate that the errors are not fatal and that the connection should proceed, the ignoreSslErrors() function should be called from the slot connected to this signal. If it is not called, the SSL session will be torn down before any data is exchanged (including the URL). This signal can be used to display an error message to the user indicating that security may be compromised and display the SSL settings (see sslConfiguration() to obtain it). If the user decides to proceed after analyzing the remote certificate, the slot should call ignoreSslErrors(). \sa QSslSocket::sslErrors(), QNetworkAccessManager::sslErrors(), sslConfiguration(), ignoreSslErrors() */ /*! \fn void QNetworkReply::metaDataChanged() \omit FIXME: Update name? \endomit This signal is emitted whenever the metadata in this reply changes. metadata is any information that is not the content (data) itself, including the network headers. In the majority of cases, the metadata will be known fully by the time the first byte of data is received. However, it is possible to receive updates of headers or other metadata during the processing of the data. \sa header(), rawHeaderList(), rawHeader(), hasRawHeader() */ /*! \fn void QNetworkReply::finished() This signal is emitted when the reply has finished processing. After this signal is emitted, there will be no more updates to the reply's data or metadata. Unless close() has been called, the reply will be still be opened for reading, so the data can be retrieved by calls to read() or readAll(). In particular, if no calls to read() were made as a result of readyRead(), a call to readAll() will retrieve the full contents in a QByteArray. This signal is emitted in tandem with QNetworkAccessManager::finished() where that signal's reply parameter is this object. \note Do not delete the object in the slot connected to this signal. Use deleteLater(). You can also use isFinished() to check if a QNetworkReply has finished even before you receive the finished() signal. \sa QNetworkAccessManager::finished(), isFinished() */ /*! \fn void QNetworkReply::error(QNetworkReply::NetworkError code) This signal is emitted when the reply detects an error in processing. The finished() signal will probably follow, indicating that the connection is over. The \a code parameter contains the code of the error that was detected. Call errorString() to obtain a textual representation of the error condition. \note Do not delete the object in the slot connected to this signal. Use deleteLater(). \sa error(), errorString() */ /*! \fn void QNetworkReply::uploadProgress(qint64 bytesSent, qint64 bytesTotal) This signal is emitted to indicate the progress of the upload part of this network request, if there's any. If there's no upload associated with this request, this signal will not be emitted. The \a bytesSent parameter indicates the number of bytes uploaded, while \a bytesTotal indicates the total number of bytes to be uploaded. If the number of bytes to be uploaded could not be determined, \a bytesTotal will be -1. The upload is finished when \a bytesSent is equal to \a bytesTotal. At that time, \a bytesTotal will not be -1. This signal is suitable to connecting to QProgressBar::setValue() to update the QProgressBar that provides user feedback. \sa downloadProgress() */ /*! \fn void QNetworkReply::downloadProgress(qint64 bytesReceived, qint64 bytesTotal) This signal is emitted to indicate the progress of the download part of this network request, if there's any. If there's no download associated with this request, this signal will be emitted once with 0 as the value of both \a bytesReceived and \a bytesTotal. The \a bytesReceived parameter indicates the number of bytes received, while \a bytesTotal indicates the total number of bytes expected to be downloaded. If the number of bytes to be downloaded is not known, \a bytesTotal will be -1. The download is finished when \a bytesReceived is equal to \a bytesTotal. At that time, \a bytesTotal will not be -1. This signal is suitable to connecting to QProgressBar::setValue() to update the QProgressBar that provides user feedback. Note that the values of both \a bytesReceived and \a bytesTotal may be different from size(), the total number of bytes obtained through read() or readAll(), or the value of the header(ContentLengthHeader). The reason for that is that there may be protocol overhead or the data may be compressed during the download. \sa uploadProgress(), bytesAvailable() */ /*! \fn void QNetworkReply::abort() Aborts the operation immediately and close down any network connections still open. Uploads still in progress are also aborted. \sa close() */ /*! Creates a QNetworkReply object with parent \a parent. You cannot directly instantiate QNetworkReply objects. Use QNetworkAccessManager functions to do that. */ QNetworkReply::QNetworkReply(QObject *parent) : QIODevice(*new QNetworkReplyPrivate, parent) { } /*! \internal */ QNetworkReply::QNetworkReply(QNetworkReplyPrivate &dd, QObject *parent) : QIODevice(dd, parent) { } /*! Disposes of this reply and frees any resources associated with it. If any network connections are still open, they will be closed. \sa abort(), close() */ QNetworkReply::~QNetworkReply() { } /*! Closes this device for reading. Unread data is discarded, but the network resources are not discarded until they are finished. In particular, if any upload is in progress, it will continue until it is done. The finished() signal is emitted when all operations are over and the network resources are freed. \sa abort(), finished() */ void QNetworkReply::close() { QIODevice::close(); } /*! \internal */ bool QNetworkReply::isSequential() const { return true; } /*! Returns the size of the read buffer, in bytes. \sa setReadBufferSize() */ qint64 QNetworkReply::readBufferSize() const { return d_func()->readBufferMaxSize; } /*! Sets the size of the read buffer to be \a size bytes. The read buffer is the buffer that holds data that is being downloaded off the network, before it is read with QIODevice::read(). Setting the buffer size to 0 will make the buffer unlimited in size. QNetworkReply will try to stop reading from the network once this buffer is full (i.e., bytesAvailable() returns \a size or more), thus causing the download to throttle down as well. If the buffer is not limited in size, QNetworkReply will try to download as fast as possible from the network. Unlike QAbstractSocket::setReadBufferSize(), QNetworkReply cannot guarantee precision in the read buffer size. That is, bytesAvailable() can return more than \a size. \sa readBufferSize() */ void QNetworkReply::setReadBufferSize(qint64 size) { Q_D(QNetworkReply); d->readBufferMaxSize = size; } /*! Returns the QNetworkAccessManager that was used to create this QNetworkReply object. Initially, it is also the parent object. */ QNetworkAccessManager *QNetworkReply::manager() const { return d_func()->manager; } /*! Returns the request that was posted for this reply. In special, note that the URL for the request may be different than that of the reply. \sa QNetworkRequest::url(), url(), setRequest() */ QNetworkRequest QNetworkReply::request() const { return d_func()->request; } /*! Returns the operation that was posted for this reply. \sa setOperation() */ QNetworkAccessManager::Operation QNetworkReply::operation() const { return d_func()->operation; } /*! Returns the error that was found during the processing of this request. If no error was found, returns NoError. \sa setError() */ QNetworkReply::NetworkError QNetworkReply::error() const { return d_func()->errorCode; } /*! \since 4.6 Returns true when the reply has finished or was aborted. \sa isRunning() */ bool QNetworkReply::isFinished() const { return d_func()->isFinished(); } /*! \since 4.6 Returns true when the request is still processing and the reply has not finished or was aborted yet. \sa isFinished() */ bool QNetworkReply::isRunning() const { return !isFinished(); } /*! Returns the URL of the content downloaded or uploaded. Note that the URL may be different from that of the original request. \sa request(), setUrl(), QNetworkRequest::url() */ QUrl QNetworkReply::url() const { return d_func()->url; } /*! Returns the value of the known header \a header, if that header was sent by the remote server. If the header was not sent, returns an invalid QVariant. \sa rawHeader(), setHeader(), QNetworkRequest::header() */ QVariant QNetworkReply::header(QNetworkRequest::KnownHeaders header) const { return d_func()->cookedHeaders.value(header); } /*! Returns true if the raw header of name \a headerName was sent by the remote server \sa rawHeader() */ bool QNetworkReply::hasRawHeader(const QByteArray &headerName) const { Q_D(const QNetworkReply); return d->findRawHeader(headerName) != d->rawHeaders.constEnd(); } /*! Returns the raw contents of the header \a headerName as sent by the remote server. If there is no such header, returns an empty byte array, which may be indistinguishable from an empty header. Use hasRawHeader() to verify if the server sent such header field. \sa setRawHeader(), hasRawHeader(), header() */ QByteArray QNetworkReply::rawHeader(const QByteArray &headerName) const { Q_D(const QNetworkReply); QNetworkHeadersPrivate::RawHeadersList::ConstIterator it = d->findRawHeader(headerName); if (it != d->rawHeaders.constEnd()) return it->second; return QByteArray(); } /*! \typedef QNetworkReply::RawHeaderPair RawHeaderPair is a QPair where the first QByteArray is the header name and the second is the header. */ /*! Returns a list of raw header pairs. */ const QList& QNetworkReply::rawHeaderPairs() const { Q_D(const QNetworkReply); return d->rawHeaders; } /*! Returns a list of headers fields that were sent by the remote server, in the order that they were sent. Duplicate headers are merged together and take place of the latter duplicate. */ QList QNetworkReply::rawHeaderList() const { return d_func()->rawHeadersKeys(); } /*! Returns the attribute associated with the code \a code. If the attribute has not been set, it returns an invalid QVariant (type QVariant::Null). You can expect the default values listed in QNetworkRequest::Attribute to be applied to the values returned by this function. \sa setAttribute(), QNetworkRequest::Attribute */ QVariant QNetworkReply::attribute(QNetworkRequest::Attribute code) const { return d_func()->attributes.value(code); } #ifndef QT_NO_OPENSSL /*! Returns the SSL configuration and state associated with this reply, if SSL was used. It will contain the remote server's certificate, its certificate chain leading to the Certificate Authority as well as the encryption ciphers in use. The peer's certificate and its certificate chain will be known by the time sslErrors() is emitted, if it's emitted. */ QSslConfiguration QNetworkReply::sslConfiguration() const { QSslConfiguration config; // determine if we support this extension int id = metaObject()->indexOfMethod("sslConfigurationImplementation()"); if (id != -1) { void *arr[] = { &config, 0 }; const_cast(this)->qt_metacall(QMetaObject::InvokeMetaMethod, id, arr); } return config; } /*! Sets the SSL configuration for the network connection associated with this request, if possible, to be that of \a config. */ void QNetworkReply::setSslConfiguration(const QSslConfiguration &config) { if (config.isNull()) return; int id = metaObject()->indexOfMethod("setSslConfigurationImplementation(QSslConfiguration)"); if (id != -1) { QSslConfiguration copy(config); void *arr[] = { 0, © }; qt_metacall(QMetaObject::InvokeMetaMethod, id, arr); } } /*! \overload \since 4.6 If this function is called, the SSL errors given in \a errors will be ignored. Note that you can set the expected certificate in the SSL error: If, for instance, you want to issue a request to a server that uses a self-signed certificate, consider the following snippet: \snippet doc/src/snippets/code/src_network_access_qnetworkreply.cpp 0 Multiple calls to this function will replace the list of errors that were passed in previous calls. You can clear the list of errors you want to ignore by calling this function with an empty list. \sa sslConfiguration(), sslErrors(), QSslSocket::ignoreSslErrors() */ void QNetworkReply::ignoreSslErrors(const QList &errors) { // do this cryptic trick, because we could not add a virtual method to this class later on // since that breaks binary compatibility int id = metaObject()->indexOfMethod("ignoreSslErrorsImplementation(QList)"); if (id != -1) { QList copy(errors); void *arr[] = { 0, © }; qt_metacall(QMetaObject::InvokeMetaMethod, id, arr); } } #endif /*! If this function is called, SSL errors related to network connection will be ignored, including certificate validation errors. Note that calling this function without restraint may pose a security risk for your application. Use it with care. This function can be called from the slot connected to the sslErrors() signal, which indicates which errors were found. \sa sslConfiguration(), sslErrors(), QSslSocket::ignoreSslErrors() */ void QNetworkReply::ignoreSslErrors() { } /*! \internal */ qint64 QNetworkReply::writeData(const char *, qint64) { return -1; // you can't write } /*! Sets the associated operation for this object to be \a operation. This value will be returned by operation(). Note: the operation should be set when this object is created and not changed again. \sa operation(), setRequest() */ void QNetworkReply::setOperation(QNetworkAccessManager::Operation operation) { Q_D(QNetworkReply); d->operation = operation; } /*! Sets the associated request for this object to be \a request. This value will be returned by request(). Note: the request should be set when this object is created and not changed again. \sa request(), setOperation() */ void QNetworkReply::setRequest(const QNetworkRequest &request) { Q_D(QNetworkReply); d->request = request; } /*! Sets the error condition to be \a errorCode. The human-readable message is set with \a errorString. Calling setError() does not emit the error(QNetworkReply::NetworkError) signal. \sa error(), errorString() */ void QNetworkReply::setError(NetworkError errorCode, const QString &errorString) { Q_D(QNetworkReply); d->errorCode = errorCode; setErrorString(errorString); // in QIODevice } /*! Sets the URL being processed to be \a url. Normally, the URL matches that of the request that was posted, but for a variety of reasons it can be different (for example, a file path being made absolute or canonical). \sa url(), request(), QNetworkRequest::url() */ void QNetworkReply::setUrl(const QUrl &url) { Q_D(QNetworkReply); d->url = url; } /*! Sets the known header \a header to be of value \a value. The corresponding raw form of the header will be set as well. \sa header(), setRawHeader(), QNetworkRequest::setHeader() */ void QNetworkReply::setHeader(QNetworkRequest::KnownHeaders header, const QVariant &value) { Q_D(QNetworkReply); d->setCookedHeader(header, value); } /*! Sets the raw header \a headerName to be of value \a value. If \a headerName was previously set, it is overridden. Multiple HTTP headers of the same name are functionally equivalent to one single header with the values concatenated, separated by commas. If \a headerName matches a known header, the value \a value will be parsed and the corresponding parsed form will also be set. \sa rawHeader(), header(), setHeader(), QNetworkRequest::setRawHeader() */ void QNetworkReply::setRawHeader(const QByteArray &headerName, const QByteArray &value) { Q_D(QNetworkReply); d->setRawHeader(headerName, value); } /*! Sets the attribute \a code to have value \a value. If \a code was previously set, it will be overridden. If \a value is an invalid QVariant, the attribute will be unset. \sa attribute(), QNetworkRequest::setAttribute() */ void QNetworkReply::setAttribute(QNetworkRequest::Attribute code, const QVariant &value) { Q_D(QNetworkReply); if (value.isValid()) d->attributes.insert(code, value); else d->attributes.remove(code); } QT_END_NAMESPACE