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Use no-cache fetch mode when loading main documents with location.rel…
…oad()

https://bugs.webkit.org/show_bug.cgi?id=181285

Patch by Youenn Fablet <youenn@apple.com> on 2018-01-08
Reviewed by Alex Christensen.

LayoutTests/imported/w3c:

* web-platform-tests/service-workers/service-worker/fetch-event.https-expected.txt:

Source/WebCore:

Covered by rebased tests.

Start to translate cache policy used for navigation as FetchOptions::Cache.
This allows ensuring service workers receive the right cache mode when intercepting navigation loads.
To not change current navigation behavior, ReturnCacheDataElseLoad and ReturnCacheDataDontLoad still trigger default fetch cache mode.

For Reload and ReloadExpiredOnly frame load types, using no-cache mode is more efficient than reload mode,
as a conditional request will be sent if possible. This applies to location.reload which is consistent with other browsers.
Keep reload mode for ReloadFromOrigin.

* loader/DocumentLoader.cpp:
(WebCore::toFetchOptionsCache):
(WebCore::DocumentLoader::loadMainResource):
* loader/FrameLoader.cpp:
(WebCore::FrameLoader::loadFrameRequest):
(WebCore::FrameLoader::loadURL):
(WebCore::FrameLoader::load):
(WebCore::FrameLoader::reload):
(WebCore::FrameLoader::defaultRequestCachingPolicy):
(WebCore::FrameLoader::loadDifferentDocumentItem):
* loader/NavigationScheduler.cpp:

Canonical link: https://commits.webkit.org/197240@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@226531 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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youennf authored and webkit-commit-queue committed Jan 8, 2018
1 parent e140d4b commit 65f6ced2c4a1cbfff83db018f26216463dc17b43
@@ -1,3 +1,12 @@
2018-01-08 Youenn Fablet <youenn@apple.com>

Use no-cache fetch mode when loading main documents with location.reload()
https://bugs.webkit.org/show_bug.cgi?id=181285

Reviewed by Alex Christensen.

* web-platform-tests/service-workers/service-worker/fetch-event.https-expected.txt:

2018-01-08 Ms2ger <Ms2ger@igalia.com>

Update imagebitmap tests.
@@ -1,5 +1,4 @@


PASS Service Worker headers in the request of a fetch event
PASS Service Worker responds to fetch event with string
PASS Service Worker responds to fetch event with blob body
@@ -12,7 +11,7 @@ PASS Service Worker responds to fetch event with POST form
PASS Multiple calls of respondWith must throw InvalidStateErrors
PASS Service Worker event.respondWith must set the used flag
PASS Service Worker should expose FetchEvent URL fragments.
FAIL Service Worker responds to fetch event with the correct cache types assert_unreached: unexpected rejection: assert_equals: expected "no-cache" but got "default" Reached unreachable code
PASS Service Worker responds to fetch event with the correct cache types
PASS Service Worker should intercept EventSource
PASS Service Worker responds to fetch event with the correct integrity_metadata
PASS FetchEvent#body is a string
@@ -1,3 +1,32 @@
2018-01-08 Youenn Fablet <youenn@apple.com>

Use no-cache fetch mode when loading main documents with location.reload()
https://bugs.webkit.org/show_bug.cgi?id=181285

Reviewed by Alex Christensen.

Covered by rebased tests.

Start to translate cache policy used for navigation as FetchOptions::Cache.
This allows ensuring service workers receive the right cache mode when intercepting navigation loads.
To not change current navigation behavior, ReturnCacheDataElseLoad and ReturnCacheDataDontLoad still trigger default fetch cache mode.

For Reload and ReloadExpiredOnly frame load types, using no-cache mode is more efficient than reload mode,
as a conditional request will be sent if possible. This applies to location.reload which is consistent with other browsers.
Keep reload mode for ReloadFromOrigin.

* loader/DocumentLoader.cpp:
(WebCore::toFetchOptionsCache):
(WebCore::DocumentLoader::loadMainResource):
* loader/FrameLoader.cpp:
(WebCore::FrameLoader::loadFrameRequest):
(WebCore::FrameLoader::loadURL):
(WebCore::FrameLoader::load):
(WebCore::FrameLoader::reload):
(WebCore::FrameLoader::defaultRequestCachingPolicy):
(WebCore::FrameLoader::loadDifferentDocumentItem):
* loader/NavigationScheduler.cpp:

2018-01-08 Youenn Fablet <youenn@apple.com>

Stop exposing fetch and extendable events to window
@@ -1607,9 +1607,32 @@ void DocumentLoader::startLoadingMainResource()
});
}

static inline FetchOptions::Cache toFetchOptionsCache(ResourceRequestCachePolicy policy)
{
// We are setting FetchOptions::Cache values to keep current behavior consistency.
// FIXME: We should merge FetchOptions::Cache with ResourceRequestCachePolicy and merge related class members.
switch (policy) {
case UseProtocolCachePolicy:
return FetchOptions::Cache::Default;
case ReloadIgnoringCacheData:
return FetchOptions::Cache::Reload;
case ReturnCacheDataElseLoad:
return FetchOptions::Cache::Default;
case ReturnCacheDataDontLoad:
return FetchOptions::Cache::Default;
case DoNotUseAnyCache:
return FetchOptions::Cache::NoStore;
case RefreshAnyCacheData:
return FetchOptions::Cache::NoCache;
}
return FetchOptions::Cache::Default;
}

void DocumentLoader::loadMainResource(ResourceRequest&& request)
{
static NeverDestroyed<ResourceLoaderOptions> mainResourceLoadOptions(SendCallbacks, SniffContent, BufferData, StoredCredentialsPolicy::Use, ClientCredentialPolicy::MayAskClientForCredentials, FetchOptions::Credentials::Include, SkipSecurityCheck, FetchOptions::Mode::Navigate, IncludeCertificateInfo, ContentSecurityPolicyImposition::SkipPolicyCheck, DefersLoadingPolicy::AllowDefersLoading, CachingPolicy::AllowCaching);
ResourceLoaderOptions mainResourceLoadOptions { SendCallbacks, SniffContent, BufferData, StoredCredentialsPolicy::Use, ClientCredentialPolicy::MayAskClientForCredentials, FetchOptions::Credentials::Include, SkipSecurityCheck, FetchOptions::Mode::Navigate, IncludeCertificateInfo, ContentSecurityPolicyImposition::SkipPolicyCheck, DefersLoadingPolicy::AllowDefersLoading, CachingPolicy::AllowCaching };
mainResourceLoadOptions.cache = toFetchOptionsCache(request.cachePolicy());

CachedResourceRequest mainResourceRequest(ResourceRequest(request), mainResourceLoadOptions);
if (!m_frame->isMainFrame() && m_frame->document()) {
// If we are loading the main resource of a subframe, use the cache partition of the main document.
@@ -1193,10 +1193,12 @@ void FrameLoader::loadFrameRequest(FrameLoadRequest&& request, Event* event, For
referrer = String();

FrameLoadType loadType;
if (request.resourceRequest().cachePolicy() == ReloadIgnoringCacheData)
if (request.resourceRequest().cachePolicy() == RefreshAnyCacheData)
loadType = FrameLoadType::Reload;
else if (request.lockBackForwardList() == LockBackForwardList::Yes)
loadType = FrameLoadType::RedirectWithLockedBackForwardList;
else if (request.resourceRequest().cachePolicy() == ReloadIgnoringCacheData)
loadType = FrameLoadType::ReloadFromOrigin;
else
loadType = FrameLoadType::Standard;

@@ -1281,7 +1283,7 @@ void FrameLoader::loadURL(FrameLoadRequest&& frameLoadRequest, const String& ref

addExtraFieldsToRequest(request, newLoadType, true);
if (isReload(newLoadType))
request.setCachePolicy(ReloadIgnoringCacheData);
request.setCachePolicy(RefreshAnyCacheData);

ASSERT(newLoadType != FrameLoadType::Same);

@@ -1416,7 +1418,7 @@ void FrameLoader::load(DocumentLoader* newDocumentLoader)
FrameLoadType type;

if (shouldTreatURLAsSameAsCurrent(newDocumentLoader->originalRequest().url())) {
r.setCachePolicy(ReloadIgnoringCacheData);
r.setCachePolicy(RefreshAnyCacheData);
type = FrameLoadType::Same;
} else if (shouldTreatURLAsSameAsCurrent(newDocumentLoader->unreachableURL()) && m_loadType == FrameLoadType::Reload)
type = FrameLoadType::Reload;
@@ -1641,8 +1643,7 @@ void FrameLoader::reload(OptionSet<ReloadOption> options)

ResourceRequest& request = loader->request();

// FIXME: We don't have a mechanism to revalidate the main resource without reloading at the moment.
request.setCachePolicy(ReloadIgnoringCacheData);
request.setCachePolicy(RefreshAnyCacheData);

// If we're about to re-post, set up action so the application can warn the user.
if (request.httpMethod() == "POST")
@@ -2614,13 +2615,13 @@ ResourceRequestCachePolicy FrameLoader::defaultRequestCachingPolicy(const Resour

if (isMainResource) {
if (isReload(loadType) || request.isConditional())
return ReloadIgnoringCacheData;
return loadType == FrameLoadType::ReloadFromOrigin ? ReloadIgnoringCacheData : RefreshAnyCacheData;

return UseProtocolCachePolicy;
}

if (request.isConditional())
return ReloadIgnoringCacheData;
return RefreshAnyCacheData;

if (documentLoader()->isLoadingInAPISense()) {
// If we inherit cache policy from a main resource, we use the DocumentLoader's
@@ -3478,8 +3479,10 @@ void FrameLoader::loadDifferentDocumentItem(HistoryItem& item, FrameLoadType loa
} else {
switch (loadType) {
case FrameLoadType::Reload:
case FrameLoadType::ReloadFromOrigin:
case FrameLoadType::ReloadExpiredOnly:
request.setCachePolicy(RefreshAnyCacheData);
break;
case FrameLoadType::ReloadFromOrigin:
request.setCachePolicy(ReloadIgnoringCacheData);
break;
case FrameLoadType::Back:
@@ -182,7 +182,7 @@ class ScheduledRedirect : public ScheduledURLNavigation {
UserGestureIndicator gestureIndicator { userGestureToForward() };

bool refresh = equalIgnoringFragmentIdentifier(frame.document()->url(), url());
ResourceRequest resourceRequest { url(), referrer(), refresh ? ReloadIgnoringCacheData : UseProtocolCachePolicy };
ResourceRequest resourceRequest { url(), referrer(), refresh ? RefreshAnyCacheData : UseProtocolCachePolicy };
FrameLoadRequest frameLoadRequest { initiatingDocument(), *securityOrigin(), resourceRequest, "_self", lockHistory(), lockBackForwardList(), MaybeSendReferrer, AllowNavigationToInvalidURL::No, NewFrameOpenerPolicy::Allow, shouldOpenExternalURLs(), initiatedByMainFrame() };

frame.loader().changeLocation(WTFMove(frameLoadRequest));
@@ -216,7 +216,7 @@ class ScheduledRefresh : public ScheduledURLNavigation {
{
UserGestureIndicator gestureIndicator { userGestureToForward() };

ResourceRequest resourceRequest { url(), referrer(), ReloadIgnoringCacheData };
ResourceRequest resourceRequest { url(), referrer(), RefreshAnyCacheData };
FrameLoadRequest frameLoadRequest { initiatingDocument(), *securityOrigin(), resourceRequest, "_self", lockHistory(), lockBackForwardList(), MaybeSendReferrer, AllowNavigationToInvalidURL::Yes, NewFrameOpenerPolicy::Allow, shouldOpenExternalURLs(), initiatedByMainFrame() };

frame.loader().changeLocation(WTFMove(frameLoadRequest));
@@ -319,7 +319,7 @@ class ScheduledPageBlock final : public ScheduledNavigation {
ResourceResponse replacementResponse { m_originDocument.url(), ASCIILiteral("text/plain"), 0, ASCIILiteral("UTF-8") };
SubstituteData replacementData { SharedBuffer::create(), m_originDocument.url(), replacementResponse, SubstituteData::SessionHistoryVisibility::Hidden };

ResourceRequest resourceRequest { m_originDocument.url(), emptyString(), ReloadIgnoringCacheData };
ResourceRequest resourceRequest { m_originDocument.url(), emptyString(), RefreshAnyCacheData };
FrameLoadRequest frameLoadRequest { m_originDocument, m_originDocument.securityOrigin(), resourceRequest, { }, lockHistory(), lockBackForwardList(), MaybeSendReferrer, AllowNavigationToInvalidURL::Yes, NewFrameOpenerPolicy::Allow, shouldOpenExternalURLs(), initiatedByMainFrame() };
frameLoadRequest.setSubstituteData(replacementData);
frame.loader().load(WTFMove(frameLoadRequest));

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