Index: third_party/WebKit/Source/platform/network/ResourceRequest.cpp |
diff --git a/third_party/WebKit/Source/platform/network/ResourceRequest.cpp b/third_party/WebKit/Source/platform/network/ResourceRequest.cpp |
index 4d264c050380bd298bae9b62e29b41ddb7e3be49..05c5525b82cba65a89ad1b9e0627fd02369dd6f5 100644 |
--- a/third_party/WebKit/Source/platform/network/ResourceRequest.cpp |
+++ b/third_party/WebKit/Source/platform/network/ResourceRequest.cpp |
@@ -88,6 +88,8 @@ ResourceRequest::ResourceRequest(CrossThreadResourceRequestData* data) |
m_uiStartTime = data->m_uiStartTime; |
m_isExternalRequest = data->m_isExternalRequest; |
m_inputPerfMetricReportPolicy = data->m_inputPerfMetricReportPolicy; |
+ m_isCacheAwareLoadingActivated = data->m_isCacheAwareLoadingActivated; |
+ m_savedCachePolicy = data->m_savedCachePolicy; |
m_redirectStatus = data->m_redirectStatus; |
} |
@@ -136,6 +138,8 @@ std::unique_ptr<CrossThreadResourceRequestData> ResourceRequest::copyData() |
data->m_uiStartTime = m_uiStartTime; |
data->m_isExternalRequest = m_isExternalRequest; |
data->m_inputPerfMetricReportPolicy = m_inputPerfMetricReportPolicy; |
+ data->m_isCacheAwareLoadingActivated = m_isCacheAwareLoadingActivated; |
+ data->m_savedCachePolicy = m_savedCachePolicy; |
data->m_redirectStatus = m_redirectStatus; |
return data; |
} |
@@ -169,7 +173,17 @@ WebCachePolicy ResourceRequest::getCachePolicy() const { |
} |
void ResourceRequest::setCachePolicy(WebCachePolicy cachePolicy) { |
- m_cachePolicy = cachePolicy; |
+ // TODO(shaochuan): This may be called after cache-aware loading is activated, |
+ // deactivate if cache policy is set to unsupported value. Remove after cache |
+ // policy is only set before cache-aware loading activation. crbug.com/632580 |
+ if (m_isCacheAwareLoadingActivated && |
+ !isCacheAwareLoadingSupported(cachePolicy)) |
+ deactivateCacheAwareLoading(); |
+ |
+ if (m_isCacheAwareLoadingActivated) |
+ m_savedCachePolicy = cachePolicy; |
+ else |
+ m_cachePolicy = cachePolicy; |
} |
double ResourceRequest::timeoutInterval() const { |
@@ -392,6 +406,38 @@ bool ResourceRequest::hasCacheValidatorFields() const { |
!m_httpHeaderFields.get(HTTPNames::ETag).isEmpty(); |
} |
+bool ResourceRequest::isCacheAwareLoadingSupported(WebCachePolicy cachePolicy) { |
+ switch (cachePolicy) { |
+ case WebCachePolicy::BypassingCache: |
+ case WebCachePolicy::ReturnCacheDataDontLoad: |
+ return false; |
+ case WebCachePolicy::UseProtocolCachePolicy: |
+ case WebCachePolicy::ValidatingCacheData: |
+ case WebCachePolicy::ReturnCacheDataElseLoad: |
+ break; |
+ } |
+ return true; |
+} |
+ |
+void ResourceRequest::mayActivateCacheAwareLoading() { |
+ DCHECK(!m_isCacheAwareLoadingActivated); |
+ if (!isCacheAwareLoadingSupported(m_cachePolicy)) |
+ return; |
+ |
+ m_savedCachePolicy = m_cachePolicy; |
+ // TODO(shaochuan): Stale data may be retrieved with this flag. Switch to new |
+ // flag to load from disk cache with validation when available in net. |
+ // crbug.com/652649 |
+ m_cachePolicy = WebCachePolicy::ReturnCacheDataDontLoad; |
+ m_isCacheAwareLoadingActivated = true; |
+} |
+ |
+void ResourceRequest::deactivateCacheAwareLoading() { |
+ DCHECK(m_isCacheAwareLoadingActivated); |
+ m_cachePolicy = m_savedCachePolicy; |
+ m_isCacheAwareLoadingActivated = false; |
+} |
+ |
void ResourceRequest::initialize(const KURL& url) { |
m_url = url; |
m_cachePolicy = WebCachePolicy::UseProtocolCachePolicy; |
@@ -424,6 +470,8 @@ void ResourceRequest::initialize(const KURL& url) { |
m_inputPerfMetricReportPolicy = InputToLoadPerfMetricReportPolicy::NoReport; |
m_redirectStatus = RedirectStatus::NoRedirect; |
m_requestorOrigin = SecurityOrigin::createUnique(); |
+ m_isCacheAwareLoadingActivated = false; |
+ m_savedCachePolicy = WebCachePolicy::UseProtocolCachePolicy; |
} |
} // namespace blink |