void QNetworkReplyImplPrivate::_q_copyReadyRead()
{
Q_Q(QNetworkReplyImpl);
if (state != Working)
return;
if (!copyDevice || !q->isOpen())
return;
// FIXME Optimize to use download buffer if it is a QBuffer.
// Needs to be done where sendCacheContents() (?) of HTTP is emitting
// metaDataChanged ?
forever {
qint64 bytesToRead = nextDownstreamBlockSize();
if (bytesToRead == 0)
// we'll be called again, eventually
break;
bytesToRead = qBound<qint64>(1, bytesToRead, copyDevice->bytesAvailable());
QByteArray byteData;
byteData.resize(bytesToRead);
qint64 bytesActuallyRead = copyDevice->read(byteData.data(), byteData.size());
if (bytesActuallyRead == -1) {
byteData.clear();
backendNotify(NotifyCopyFinished);
break;
}
byteData.resize(bytesActuallyRead);
readBuffer.append(byteData);
if (!copyDevice->isSequential() && copyDevice->atEnd()) {
backendNotify(NotifyCopyFinished);
bytesDownloaded += bytesActuallyRead;
break;
}
bytesDownloaded += bytesActuallyRead;
}
if (bytesDownloaded == lastBytesDownloaded) {
// we didn't read anything
return;
}
lastBytesDownloaded = bytesDownloaded;
QVariant totalSize = cookedHeaders.value(QNetworkRequest::ContentLengthHeader);
if (preMigrationDownloaded != Q_INT64_C(-1))
totalSize = totalSize.toLongLong() + preMigrationDownloaded;
pauseNotificationHandling();
// emit readyRead before downloadProgress incase this will cause events to be
// processed and we get into a recursive call (as in QProgressDialog).
emit q->readyRead();
if (downloadProgressSignalChoke.elapsed() >= progressSignalInterval) {
downloadProgressSignalChoke.restart();
emit q->downloadProgress(bytesDownloaded,
totalSize.isNull() ? Q_INT64_C(-1) : totalSize.toLongLong());
}
resumeNotificationHandling();
}
bool QNetworkAccessFileBackend::readMoreFromFile()
{
qint64 wantToRead;
while ((wantToRead = nextDownstreamBlockSize()) > 0) {
// ### FIXME!!
// Obtain a pointer from the ringbuffer!
// Avoid extra copy
QByteArray data;
data.reserve(wantToRead);
qint64 actuallyRead = file.read(data.data(), wantToRead);
if (actuallyRead <= 0) {
// EOF or error
if (file.error() != QFile::NoError) {
QString msg = QCoreApplication::translate("QNetworkAccessFileBackend", "Read error reading from %1: %2")
.arg(url().toString(), file.errorString());
error(QNetworkReply::ProtocolFailure, msg);
finished();
return false;
}
finished();
return true;
}
data.resize(actuallyRead);
totalBytes += actuallyRead;
QByteDataBuffer list;
list.append(data);
data.clear(); // important because of implicit sharing!
writeDownstreamData(list);
}
return true;
}
void QNetworkAccessHttpBackend::readFromHttp()
{
if (!httpReply)
return;
// We read possibly more than nextDownstreamBlockSize(), but
// this is not a critical thing since it is already in the
// memory anyway
QByteDataBuffer list;
while (httpReply->bytesAvailable() != 0 && nextDownstreamBlockSize() != 0 && nextDownstreamBlockSize() > list.byteAmount()) {
list.append(httpReply->readAny());
}
if (!list.isEmpty())
writeDownstreamData(list);
}
void QNetworkAccessHttpBackend::readFromHttp()
{
// We implement the download rate control
// Don't read from QHttpNetworkAccess more than QNetworkAccessBackend wants
// One of the two functions above will be called when we can read again
qint64 bytesToRead = qBound<qint64>(0, httpReply->bytesAvailable(), nextDownstreamBlockSize());
if (!bytesToRead)
return;
QByteArray data = httpReply->read(bytesToRead);
writeDownstreamData(data);
}
void QNetworkReplyImplPrivate::_q_copyReadyRead()
{
Q_Q(QNetworkReplyImpl);
if (state != Working)
return;
if (!copyDevice || !q->isOpen())
return;
forever {
qint64 bytesToRead = nextDownstreamBlockSize();
if (bytesToRead == 0)
// we'll be called again, eventually
break;
bytesToRead = qBound<qint64>(1, bytesToRead, copyDevice->bytesAvailable());
QByteArray byteData;
byteData.resize(bytesToRead);
qint64 bytesActuallyRead = copyDevice->read(byteData.data(), byteData.size());
if (bytesActuallyRead == -1) {
byteData.clear();
backendNotify(NotifyCopyFinished);
break;
}
byteData.resize(bytesActuallyRead);
readBuffer.append(byteData);
if (!copyDevice->isSequential() && copyDevice->atEnd()) {
backendNotify(NotifyCopyFinished);
bytesDownloaded += bytesActuallyRead;
break;
}
bytesDownloaded += bytesActuallyRead;
}
if (bytesDownloaded == lastBytesDownloaded) {
// we didn't read anything
return;
}
lastBytesDownloaded = bytesDownloaded;
QVariant totalSize = cookedHeaders.value(QNetworkRequest::ContentLengthHeader);
if (preMigrationDownloaded != Q_INT64_C(-1))
totalSize = totalSize.toLongLong() + preMigrationDownloaded;
pauseNotificationHandling();
emit q->downloadProgress(bytesDownloaded,
totalSize.isNull() ? Q_INT64_C(-1) : totalSize.toLongLong());
emit q->readyRead();
resumeNotificationHandling();
}
void QNetworkAccessDebugPipeBackend::socketReadyRead()
{
if (bareProtocol) {
qint64 bytesToRead = socket.bytesAvailable();
if (bytesToRead) {
QByteArray buffer;
buffer.resize(bytesToRead);
qint64 bytesRead = socket.read(buffer.data(), bytesToRead);
if (bytesRead < bytesToRead)
buffer.truncate(bytesRead);
writeDownstreamData(buffer);
readyReadEmitted = true;
}
return;
}
while (canReceive() &&
(socket.state() == QAbstractSocket::UnconnectedState || nextDownstreamBlockSize())) {
DataPacket packet;
if (receive(packet)) {
if (!packet.headers.isEmpty()) {
QList<QPair<QByteArray, QByteArray> >::ConstIterator
it = packet.headers.constBegin(),
end = packet.headers.constEnd();
for ( ; it != end; ++it)
setRawHeader(it->first, it->second);
metaDataChanged();
}
if (!packet.data.isEmpty()) {
writeDownstreamData(packet.data);
readyReadEmitted = true;
}
if (packet.headers.isEmpty() && packet.data.isEmpty()) {
// it's an eof
socket.close();
readyReadEmitted = true;
}
} else {
// got an error
QString msg = QObject::tr("Read error reading from %1: %2")
.arg(url().toString(), socket.errorString());
error(QNetworkReply::ProtocolFailure, msg);
finished();
return;
}
}
}
void QNetworkReplyImplPrivate::appendDownstreamDataSignalEmissions()
{
Q_Q(QNetworkReplyImpl);
QVariant totalSize = cookedHeaders.value(QNetworkRequest::ContentLengthHeader);
if (preMigrationDownloaded != Q_INT64_C(-1))
totalSize = totalSize.toLongLong() + preMigrationDownloaded;
pauseNotificationHandling();
// important: At the point of this readyRead(), the data parameter list must be empty,
// else implicit sharing will trigger memcpy when the user is reading data!
emit q->readyRead();
// emit readyRead before downloadProgress incase this will cause events to be
// processed and we get into a recursive call (as in QProgressDialog).
emit q->downloadProgress(bytesDownloaded,
totalSize.isNull() ? Q_INT64_C(-1) : totalSize.toLongLong());
resumeNotificationHandling();
// do we still have room in the buffer?
if (nextDownstreamBlockSize() > 0)
backendNotify(QNetworkReplyImplPrivate::NotifyDownstreamReadyWrite);
}
void QNetworkReplyImplPrivate::appendDownstreamDataSignalEmissions()
{
Q_Q(QNetworkReplyImpl);
QPointer<QNetworkReplyImpl> qq = q;
QVariant totalSize = cookedHeaders.value(QNetworkRequest::ContentLengthHeader);
if (preMigrationDownloaded != Q_INT64_C(-1))
totalSize = totalSize.toLongLong() + preMigrationDownloaded;
pauseNotificationHandling();
emit q->downloadProgress(bytesDownloaded,
totalSize.isNull() ? Q_INT64_C(-1) : totalSize.toLongLong());
// important: At the point of this readyRead(), the data parameter list must be empty,
// else implicit sharing will trigger memcpy when the user is reading data!
emit q->readyRead();
// hopefully we haven't been deleted here
if (!qq.isNull()) {
resumeNotificationHandling();
// do we still have room in the buffer?
if (nextDownstreamBlockSize() > 0)
backendNotify(QNetworkReplyImplPrivate::NotifyDownstreamReadyWrite);
}
}
// we received downstream data and send this to the cache
// and to our readBuffer (which in turn gets read by the user of QNetworkReply)
void QNetworkReplyImplPrivate::appendDownstreamData(QByteDataBuffer &data)
{
Q_Q(QNetworkReplyImpl);
if (!q->isOpen())
return;
if (cacheEnabled && !cacheSaveDevice) {
// save the meta data
QNetworkCacheMetaData metaData;
metaData.setUrl(url);
metaData = backend->fetchCacheMetaData(metaData);
// save the redirect request also in the cache
QVariant redirectionTarget = q->attribute(QNetworkRequest::RedirectionTargetAttribute);
if (redirectionTarget.isValid()) {
QNetworkCacheMetaData::AttributesMap attributes = metaData.attributes();
attributes.insert(QNetworkRequest::RedirectionTargetAttribute, redirectionTarget);
metaData.setAttributes(attributes);
}
cacheSaveDevice = networkCache()->prepare(metaData);
if (!cacheSaveDevice || (cacheSaveDevice && !cacheSaveDevice->isOpen())) {
if (cacheSaveDevice && !cacheSaveDevice->isOpen())
qCritical("QNetworkReplyImpl: network cache returned a device that is not open -- "
"class %s probably needs to be fixed",
networkCache()->metaObject()->className());
networkCache()->remove(url);
cacheSaveDevice = 0;
cacheEnabled = false;
}
}
qint64 bytesWritten = 0;
for (int i = 0; i < data.bufferCount(); i++) {
QByteArray item = data[i];
if (cacheSaveDevice)
cacheSaveDevice->write(item.constData(), item.size());
readBuffer.append(item);
bytesWritten += item.size();
}
data.clear();
bytesDownloaded += bytesWritten;
lastBytesDownloaded = bytesDownloaded;
QPointer<QNetworkReplyImpl> qq = q;
QVariant totalSize = cookedHeaders.value(QNetworkRequest::ContentLengthHeader);
if (preMigrationDownloaded != Q_INT64_C(-1))
totalSize = totalSize.toLongLong() + preMigrationDownloaded;
pauseNotificationHandling();
emit q->downloadProgress(bytesDownloaded,
totalSize.isNull() ? Q_INT64_C(-1) : totalSize.toLongLong());
// important: At the point of this readyRead(), the data parameter list must be empty,
// else implicit sharing will trigger memcpy when the user is reading data!
emit q->readyRead();
// hopefully we haven't been deleted here
if (!qq.isNull()) {
resumeNotificationHandling();
// do we still have room in the buffer?
if (nextDownstreamBlockSize() > 0)
backendNotify(QNetworkReplyImplPrivate::NotifyDownstreamReadyWrite);
}
}
