void QNetworkAccessHttpBackend::replyHeaderChanged()
{
    // reconstruct the HTTP header
    QList<QPair<QByteArray, QByteArray> > headerMap = httpReply->header();
    QList<QPair<QByteArray, QByteArray> >::ConstIterator it = headerMap.constBegin(),
                                                        end = headerMap.constEnd();
    QByteArray header;

    for (; it != end; ++it) {
        QByteArray value = rawHeader(it->first);
        if (!value.isEmpty())
            value += ", ";
        value += it->second;
        setRawHeader(it->first, value);
    }

    setAttribute(QNetworkRequest::HttpStatusCodeAttribute, httpReply->statusCode());
    setAttribute(QNetworkRequest::HttpReasonPhraseAttribute, httpReply->reasonPhrase());

    // is it a redirection?
    switch (httpReply->statusCode()) {
    case 301:                   // Moved Permanently
    case 302:                   // Found
    case 303:                   // See Other
    case 307:                   // Temporary Redirect
        // What do we do about the caching of the HTML note?
        // The response to a 303 MUST NOT be cached, while the response to
        // all of the others is cacheable if the headers indicate it to be
        redirectionRequested(QUrl::fromEncoded(rawHeader("location")));
    }

    metaDataChanged();
}
bool QNetworkAccessCacheBackend::sendCacheContents()
{
    setCachingEnabled(false);
    QAbstractNetworkCache *nc = networkCache();
    if (!nc)
        return false;

    QNetworkCacheMetaData item = nc->metaData(url());
    if (!item.isValid())
        return false;

    QNetworkCacheMetaData::AttributesMap attributes = item.attributes();
    setAttribute(QNetworkRequest::HttpStatusCodeAttribute, attributes.value(QNetworkRequest::HttpStatusCodeAttribute));
    setAttribute(QNetworkRequest::HttpReasonPhraseAttribute, attributes.value(QNetworkRequest::HttpReasonPhraseAttribute));

    // set the raw headers
    QNetworkCacheMetaData::RawHeaderList rawHeaders = item.rawHeaders();
    QNetworkCacheMetaData::RawHeaderList::ConstIterator it = rawHeaders.constBegin(),
                                                       end = rawHeaders.constEnd();
    for ( ; it != end; ++it) {
        if (it->first.toLower() == "cache-control" &&
            it->second.toLower().contains("must-revalidate")) {
            return false;
        }
        setRawHeader(it->first, it->second);
    }

    // handle a possible redirect
    QVariant redirectionTarget = attributes.value(QNetworkRequest::RedirectionTargetAttribute);
    if (redirectionTarget.isValid()) {
        setAttribute(QNetworkRequest::RedirectionTargetAttribute, redirectionTarget);
        redirectionRequested(redirectionTarget.toUrl());
    }

    // signal we're open
    metaDataChanged();

    if (operation() == QNetworkAccessManager::GetOperation) {
        QIODevice *contents = nc->data(url());
        if (!contents)
            return false;
        contents->setParent(this);
        writeDownstreamData(contents);
    }

#if defined(QNETWORKACCESSCACHEBACKEND_DEBUG)
    qDebug() << "Successfully sent cache:" << url();
#endif
    return true;
}
Exemplo n.º 3
0
void QNetworkAccessHttpBackend::checkForRedirect(const int statusCode)
{
    switch (statusCode) {
    case 301:                   // Moved Permanently
    case 302:                   // Found
    case 303:                   // See Other
    case 307:                   // Temporary Redirect
        // What do we do about the caching of the HTML note?
        // The response to a 303 MUST NOT be cached, while the response to
        // all of the others is cacheable if the headers indicate it to be
        QByteArray header = rawHeader("location");
        QUrl url = QUrl::fromEncoded(header);
        if (!url.isValid())
            url = QUrl(QLatin1String(header));
        redirectionRequested(url);
    }
}