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HTTP reply: do not load resources from cache that must be revalidated 

The header field "Cache-Control: must-revalidate" is a strict
requirement for loading the resource from the server, and not reading it
from the cache without revalidating first. With this patch, PreferCache
will load such from the network instead of loading them from the cache,
and AlwaysCache will throw a ContentNotFound error.

Reviewed-by: Markus Goetz
Task-number: QTBUG-18983
bb10
Peter Hartmann 2011-05-04 14:33:21 +02:00
parent 863de43dca
commit 0c9f327102
1 changed files with 5 additions and 7 deletions
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12
src/network/access/qnetworkreplyhttpimpl.cpp
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@ -500,13 +500,11 @@ bool QNetworkReplyHttpImplPrivate::loadFromCacheIfAllowed(QHttpNetworkRequest &h
if (lastModified.isValid())
httpRequest.setHeaderField("If-Modified-Since", QNetworkHeadersPrivate::toHttpDate(lastModified));
if (CacheLoadControlAttribute == QNetworkRequest::PreferNetwork) {
it = cacheHeaders.findRawHeader("Cache-Control");
if (it != cacheHeaders.rawHeaders.constEnd()) {
QHash<QByteArray, QByteArray> cacheControl = parseHttpOptionHeader(it->second);
if (cacheControl.contains("must-revalidate"))
return false;
}
it = cacheHeaders.findRawHeader("Cache-Control");
if (it != cacheHeaders.rawHeaders.constEnd()) {
QHash<QByteArray, QByteArray> cacheControl = parseHttpOptionHeader(it->second);
if (cacheControl.contains("must-revalidate"))
return false;
}
QDateTime currentDateTime = QDateTime::currentDateTime();