Attachment 357952 Details for Bug 174980 – Patch

[patch] Patch

bug-174980-20181221091507.patch (text/plain), 62.92 KB, created by youenn fablet on 2018-12-21 09:15:08 PST

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Creator: youenn fablet

Created: 2018-12-21 09:15:08 PST

Size: 62.92 KB

patch

obsolete

>Subversion Revision: 239503
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 236fedcf96cb88f483ddab3a758518ff35996418..05da896f04b2ef8b31af37519e937ea997cac821 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,73 @@
>+2018-12-21  Youenn Fablet  <youenn@apple.com>
>+
>+        [Fetch API] Implement abortable fetch
>+        https://bugs.webkit.org/show_bug.cgi?id=174980
>+        <rdar://problem/46861402>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Add an AbortSignal to FetchRequest.
>+
>+        Add support for AbortSignal algorithm.
>+        The fetch request signal is added an algorithm to abort the fetch.
>+        Update clone algorithm to let signal of the cloned request be following the origin request.
>+
>+        Update ReadableStream error handling to return an exception instead of a string.
>+        This allows passing an AbortError instead of a TypeError as previously done.
>+
>+        Update FetchBodyOwner to store a loading error either as an exception or as a resource error.
>+        The latter is used for passing the error from service worker back to the page.
>+        The former is used to pass it to ReadableStream or body accessors.
>+
>+        Covered by enabled tests.
>+
>+        * Modules/cache/DOMCache.cpp:
>+        (WebCore::DOMCache::put):
>+        * Modules/fetch/FetchBody.cpp:
>+        (WebCore::FetchBody::consumeAsStream):
>+        (WebCore::FetchBody::loadingFailed):
>+        * Modules/fetch/FetchBody.h:
>+        * Modules/fetch/FetchBodyConsumer.cpp:
>+        (WebCore::FetchBodyConsumer::loadingFailed):
>+        * Modules/fetch/FetchBodyConsumer.h:
>+        * Modules/fetch/FetchBodyOwner.cpp:
>+        (WebCore::FetchBodyOwner::arrayBuffer):
>+        (WebCore::FetchBodyOwner::blob):
>+        (WebCore::FetchBodyOwner::cloneBody):
>+        (WebCore::FetchBodyOwner::formData):
>+        (WebCore::FetchBodyOwner::json):
>+        (WebCore::FetchBodyOwner::text):
>+        (WebCore::FetchBodyOwner::loadBlob):
>+        (WebCore::FetchBodyOwner::blobLoadingFailed):
>+        (WebCore::FetchBodyOwner::consumeBodyAsStream):
>+        (WebCore::FetchBodyOwner::setLoadingError):
>+        * Modules/fetch/FetchBodyOwner.h:
>+        (WebCore::FetchBodyOwner::loadingError const):
>+        (WebCore::FetchBodyOwner::loadingException const):
>+        * Modules/fetch/FetchBodySource.cpp:
>+        (WebCore::FetchBodySource::error):
>+        * Modules/fetch/FetchBodySource.h:
>+        * Modules/fetch/FetchRequest.cpp:
>+        (WebCore::FetchRequest::initializeWith):
>+        (WebCore::FetchRequest::clone):
>+        * Modules/fetch/FetchRequest.h:
>+        (WebCore::FetchRequest::FetchRequest):
>+        * Modules/fetch/FetchRequest.idl:
>+        * Modules/fetch/FetchRequestInit.h:
>+        (WebCore::FetchRequestInit::hasMembers const):
>+        * Modules/fetch/FetchRequestInit.idl:
>+        * Modules/fetch/FetchResponse.cpp:
>+        (WebCore::FetchResponse::clone):
>+        (WebCore::FetchResponse::fetch):
>+        (WebCore::FetchResponse::BodyLoader::didFail):
>+        * Modules/fetch/FetchResponse.h:
>+        * bindings/js/ReadableStreamDefaultController.h:
>+        (WebCore::ReadableStreamDefaultController::error):
>+        * dom/AbortSignal.cpp:
>+        (WebCore::AbortSignal::abort):
>+        (WebCore::AbortSignal::follow):
>+        * dom/AbortSignal.h:
>+
> 2018-12-21  Manuel Rego Casasnovas  <rego@igalia.com>
> 
>         [css-grid] Fix percentages in relative offsets for grid items
>diff --git a/Source/WebCore/Modules/cache/DOMCache.cpp b/Source/WebCore/Modules/cache/DOMCache.cpp
>index 953a1adb46da1ca40164d5b2f3a64a9fafc76ea6..a161e40fca66217021a814e671f712b8fbee000b 100644
>--- a/Source/WebCore/Modules/cache/DOMCache.cpp
>+++ b/Source/WebCore/Modules/cache/DOMCache.cpp
>@@ -321,8 +321,8 @@ void DOMCache::put(RequestInfo&& info, Ref<FetchResponse>&& response, DOMPromise
>     }
>     auto request = requestOrException.releaseReturnValue();
> 
>-    if (response->loadingError()) {
>-        promise.reject(Exception { TypeError, response->loadingError()->localizedDescription() });
>+    if (response->loadingException()) {
>+        promise.reject(*response->loadingException());
>         return;
>     }
> 
>diff --git a/Source/WebCore/Modules/fetch/FetchBody.cpp b/Source/WebCore/Modules/fetch/FetchBody.cpp
>index 4898ccc63ac2f42ea70e07a83e45bbd5bf4642fb..fa93c315891806848a497f04184300ff478ef12e 100644
>--- a/Source/WebCore/Modules/fetch/FetchBody.cpp
>+++ b/Source/WebCore/Modules/fetch/FetchBody.cpp
>@@ -186,7 +186,7 @@ void FetchBody::consumeAsStream(FetchBodyOwner& owner, FetchBodySource& source)
>         owner.loadBlob(blobBody(), nullptr);
>         m_data = nullptr;
>     } else if (isFormData())
>-        source.error("not implemented"_s);
>+        source.error(Exception { NotSupportedError, "Not implemented."_s });
>     else if (m_consumer.hasData())
>         closeStream = source.enqueue(m_consumer.takeAsArrayBuffer());
>     else
>@@ -224,9 +224,9 @@ void FetchBody::consumeBlob(FetchBodyOwner& owner, Ref<DeferredPromise>&& promis
>     m_data = nullptr;
> }
> 
>-void FetchBody::loadingFailed()
>+void FetchBody::loadingFailed(const Exception& exception)
> {
>-    m_consumer.loadingFailed();
>+    m_consumer.loadingFailed(exception);
> }
> 
> void FetchBody::loadingSucceeded()
>diff --git a/Source/WebCore/Modules/fetch/FetchBody.h b/Source/WebCore/Modules/fetch/FetchBody.h
>index 816c63c98b15cefd904ecab9c703fa427700e146..a484f9d8f217e3994022965e1fc267c6c502a0c1 100644
>--- a/Source/WebCore/Modules/fetch/FetchBody.h
>+++ b/Source/WebCore/Modules/fetch/FetchBody.h
>@@ -60,7 +60,7 @@ public:
> 
>     WEBCORE_EXPORT static Optional<FetchBody> fromFormData(FormData&);
> 
>-    void loadingFailed();
>+    void loadingFailed(const Exception&);
>     void loadingSucceeded();
> 
>     RefPtr<FormData> bodyAsFormData(ScriptExecutionContext&) const;
>diff --git a/Source/WebCore/Modules/fetch/FetchBodyConsumer.cpp b/Source/WebCore/Modules/fetch/FetchBodyConsumer.cpp
>index 00f173edd289b43f87fba64feda614f99afab942..302dff60adafeff7631dfb89648b616818cb9cb6 100644
>--- a/Source/WebCore/Modules/fetch/FetchBodyConsumer.cpp
>+++ b/Source/WebCore/Modules/fetch/FetchBodyConsumer.cpp
>@@ -212,15 +212,15 @@ void FetchBodyConsumer::setSource(Ref<FetchBodySource>&& source)
>     }
> }
> 
>-void FetchBodyConsumer::loadingFailed()
>+void FetchBodyConsumer::loadingFailed(const Exception& exception)
> {
>     m_isLoading = false;
>     if (m_consumePromise) {
>-        m_consumePromise->reject();
>+        m_consumePromise->reject(exception);
>         m_consumePromise = nullptr;
>     }
>     if (m_source) {
>-        m_source->error("Loading failed"_s);
>+        m_source->error(exception);
>         m_source = nullptr;
>     }
> }
>diff --git a/Source/WebCore/Modules/fetch/FetchBodyConsumer.h b/Source/WebCore/Modules/fetch/FetchBodyConsumer.h
>index b467db66eaafdea2dfcb9ffcf5dd883ea72129dc..1acfe0093e5085f93759c5057a7bfbde5e0fb907 100644
>--- a/Source/WebCore/Modules/fetch/FetchBodyConsumer.h
>+++ b/Source/WebCore/Modules/fetch/FetchBodyConsumer.h
>@@ -66,7 +66,7 @@ public:
>     void resolve(Ref<DeferredPromise>&&, ReadableStream*);
>     void resolveWithData(Ref<DeferredPromise>&&, const unsigned char*, unsigned);
> 
>-    void loadingFailed();
>+    void loadingFailed(const Exception&);
>     void loadingSucceeded();
> 
>     void setConsumePromise(Ref<DeferredPromise>&&);
>diff --git a/Source/WebCore/Modules/fetch/FetchBodyOwner.cpp b/Source/WebCore/Modules/fetch/FetchBodyOwner.cpp
>index 85dc88bd7f6bf09a8d57f3cbd73d160c59b6fcbd..79028b498006bee300158195bc9ef285e384fa8d 100644
>--- a/Source/WebCore/Modules/fetch/FetchBodyOwner.cpp
>+++ b/Source/WebCore/Modules/fetch/FetchBodyOwner.cpp
>@@ -99,6 +99,11 @@ bool FetchBodyOwner::isDisturbedOrLocked() const
> 
> void FetchBodyOwner::arrayBuffer(Ref<DeferredPromise>&& promise)
> {
>+    if (m_loadingException) {
>+        promise->reject(*m_loadingException);
>+        return;
>+    }
>+
>     if (isBodyNullOrOpaque()) {
>         fulfillPromiseWithArrayBuffer(WTFMove(promise), nullptr, 0);
>         return;
>@@ -113,6 +118,11 @@ void FetchBodyOwner::arrayBuffer(Ref<DeferredPromise>&& promise)
> 
> void FetchBodyOwner::blob(Ref<DeferredPromise>&& promise)
> {
>+    if (m_loadingException) {
>+        promise->reject(*m_loadingException);
>+        return;
>+    }
>+
>     if (isBodyNullOrOpaque()) {
>         promise->resolve<IDLInterface<Blob>>(Blob::create(Vector<uint8_t> { }, Blob::normalizedContentType(extractMIMETypeFromMediaType(m_contentType))));
>         return;
>@@ -127,6 +137,9 @@ void FetchBodyOwner::blob(Ref<DeferredPromise>&& promise)
> 
> void FetchBodyOwner::cloneBody(FetchBodyOwner& owner)
> {
>+    m_loadingError = owner.m_loadingError;
>+    m_loadingException = owner.m_loadingException;
>+
>     m_contentType = owner.m_contentType;
>     if (owner.isBodyNull())
>         return;
>@@ -161,6 +174,11 @@ void FetchBodyOwner::consumeOnceLoadingFinished(FetchBodyConsumer::Type type, Re
> 
> void FetchBodyOwner::formData(Ref<DeferredPromise>&& promise)
> {
>+    if (m_loadingException) {
>+        promise->reject(*m_loadingException);
>+        return;
>+    }
>+
>     if (isBodyNullOrOpaque()) {
>         promise->reject();
>         return;
>@@ -175,6 +193,11 @@ void FetchBodyOwner::formData(Ref<DeferredPromise>&& promise)
> 
> void FetchBodyOwner::json(Ref<DeferredPromise>&& promise)
> {
>+    if (m_loadingException) {
>+        promise->reject(*m_loadingException);
>+        return;
>+    }
>+
>     if (isBodyNullOrOpaque()) {
>         promise->reject(SyntaxError);
>         return;
>@@ -189,6 +212,11 @@ void FetchBodyOwner::json(Ref<DeferredPromise>&& promise)
> 
> void FetchBodyOwner::text(Ref<DeferredPromise>&& promise)
> {
>+    if (m_loadingException) {
>+        promise->reject(*m_loadingException);
>+        return;
>+    }
>+
>     if (isBodyNullOrOpaque()) {
>         promise->resolve<IDLDOMString>({ });
>         return;
>@@ -208,7 +236,7 @@ void FetchBodyOwner::loadBlob(const Blob& blob, FetchBodyConsumer* consumer)
>     ASSERT(!isBodyNull());
> 
>     if (!scriptExecutionContext()) {
>-        m_body->loadingFailed();
>+        m_body->loadingFailed(Exception { TypeError, "Blob loading failed"_s});
>         return;
>     }
> 
>@@ -217,8 +245,8 @@ void FetchBodyOwner::loadBlob(const Blob& blob, FetchBodyConsumer* consumer)
> 
>     m_blobLoader->loader->start(*scriptExecutionContext(), blob);
>     if (!m_blobLoader->loader->isStarted()) {
>-        m_body->loadingFailed();
>-        m_blobLoader = WTF::nullopt;
>+        m_body->loadingFailed(Exception { TypeError, "Blob loading failed"_s});
>+        m_blobLoader = std::nullopt;
>         return;
>     }
>     setPendingActivity(this);
>@@ -251,11 +279,11 @@ void FetchBodyOwner::blobLoadingFailed()
> #if ENABLE(STREAMS_API)
>     if (m_readableStreamSource) {
>         if (!m_readableStreamSource->isCancelling())
>-            m_readableStreamSource->error("Blob loading failed"_s);
>+            m_readableStreamSource->error(Exception { TypeError, "Blob loading failed"_s});
>         m_readableStreamSource = nullptr;
>     } else
> #endif
>-        m_body->loadingFailed();
>+        m_body->loadingFailed(Exception { TypeError, "Blob loading failed"_s});
> 
>     finishBlobLoading();
> }
>@@ -318,9 +346,8 @@ void FetchBodyOwner::consumeBodyAsStream()
> {
>     ASSERT(m_readableStreamSource);
> 
>-    if (m_loadingError) {
>-        auto errorMessage = m_loadingError->localizedDescription();
>-        m_readableStreamSource->error(errorMessage.isEmpty() ? "Loading failed"_s : errorMessage);
>+    if (m_loadingException) {
>+        m_readableStreamSource->error(*m_loadingException);
>         return;
>     }
> 
>@@ -329,4 +356,20 @@ void FetchBodyOwner::consumeBodyAsStream()
>         m_readableStreamSource = nullptr;
> }
> 
>+void FetchBodyOwner::setLoadingError(Exception&& exception)
>+{
>+    if (m_loadingError)
>+        return;
>+    m_loadingError = ResourceError { errorDomainWebKitInternal, 0, { }, exception.message() };
>+    m_loadingException = WTFMove(exception);
>+}
>+
>+void FetchBodyOwner::setLoadingError(ResourceError&& loadingError)
>+{
>+    if (m_loadingError)
>+        return;
>+    m_loadingException = Exception { TypeError, loadingError.localizedDescription().isEmpty() ? "Loading failed"_s : loadingError.localizedDescription() };
>+    m_loadingError = WTFMove(loadingError);
>+}
>+
> } // namespace WebCore
>diff --git a/Source/WebCore/Modules/fetch/FetchBodyOwner.h b/Source/WebCore/Modules/fetch/FetchBodyOwner.h
>index 45cc67e6a8eae08b26e9d055f9e4d459d35f66e2..81f194614068dc2c141a076a6a549b929e741fa8 100644
>--- a/Source/WebCore/Modules/fetch/FetchBodyOwner.h
>+++ b/Source/WebCore/Modules/fetch/FetchBodyOwner.h
>@@ -66,6 +66,9 @@ public:
>     virtual void cancel() { }
> #endif
> 
>+    const Optional<ResourceError>& loadingError() const { return m_loadingError; }
>+    const Optional<Exception>& loadingException() const { return m_loadingException; }
>+
> protected:
>     const FetchBody& body() const { return *m_body; }
>     FetchBody& body() { return *m_body; }
>@@ -88,6 +91,9 @@ protected:
>     void setBodyAsOpaque() { m_isBodyOpaque = true; }
>     bool isBodyOpaque() const { return m_isBodyOpaque; }
> 
>+    void setLoadingError(Exception&&);
>+    void setLoadingError(ResourceError&&);
>+
> private:
>     // Blob loading routines
>     void blobChunk(const char*, size_t);
>@@ -116,11 +122,13 @@ protected:
>     RefPtr<FetchBodySource> m_readableStreamSource;
> #endif
>     Ref<FetchHeaders> m_headers;
>-    Optional<ResourceError> m_loadingError;
> 
> private:
>     Optional<BlobLoader> m_blobLoader;
>     bool m_isBodyOpaque { false };
>+
>+    Optional<ResourceError> m_loadingError;
>+    Optional<Exception> m_loadingException;
> };
> 
> } // namespace WebCore
>diff --git a/Source/WebCore/Modules/fetch/FetchBodySource.cpp b/Source/WebCore/Modules/fetch/FetchBodySource.cpp
>index a28581485f9b0caaca65fc4d0ad9248d443c5217..6699ef4e44528548ebfa0ca4416f8cd5958c2295 100644
>--- a/Source/WebCore/Modules/fetch/FetchBodySource.cpp
>+++ b/Source/WebCore/Modules/fetch/FetchBodySource.cpp
>@@ -88,7 +88,7 @@ void FetchBodySource::close()
>     m_bodyOwner = nullptr;
> }
> 
>-void FetchBodySource::error(const String& value)
>+void FetchBodySource::error(const Exception& value)
> {
>     controller().error(value);
>     clean();
>diff --git a/Source/WebCore/Modules/fetch/FetchBodySource.h b/Source/WebCore/Modules/fetch/FetchBodySource.h
>index c10fe96e63ecddf21e3fbec2472eafc0de303cfc..f0e61afcb7e43f7f8bb27d1afe00308d95abd4b3 100644
>--- a/Source/WebCore/Modules/fetch/FetchBodySource.h
>+++ b/Source/WebCore/Modules/fetch/FetchBodySource.h
>@@ -44,7 +44,7 @@ public:
> 
>     bool enqueue(RefPtr<JSC::ArrayBuffer>&& chunk) { return controller().enqueue(WTFMove(chunk)); }
>     void close();
>-    void error(const String&);
>+    void error(const Exception&);
> 
>     bool isCancelling() const { return m_isCancelling; }
> 
>diff --git a/Source/WebCore/Modules/fetch/FetchRequest.cpp b/Source/WebCore/Modules/fetch/FetchRequest.cpp
>index 944451b86b9c5511f09e2574f97d83d26d05050d..c0790bc2a184f14604d3d44fc0f96ec172de9239 100644
>--- a/Source/WebCore/Modules/fetch/FetchRequest.cpp
>+++ b/Source/WebCore/Modules/fetch/FetchRequest.cpp
>@@ -159,6 +159,9 @@ ExceptionOr<void> FetchRequest::initializeWith(const String& url, Init&& init)
>     if (optionsResult.hasException())
>         return optionsResult.releaseException();
> 
>+    if (init.signal && init.signal.value())
>+        m_signal->follow(*init.signal.value());
>+
>     if (init.headers) {
>         auto fillResult = m_headers->fill(*init.headers);
>         if (fillResult.hasException())
>@@ -188,6 +191,12 @@ ExceptionOr<void> FetchRequest::initializeWith(FetchRequest& input, Init&& init)
>     if (optionsResult.hasException())
>         return optionsResult.releaseException();
> 
>+    if (init.signal) {
>+        if (init.signal.value())
>+            m_signal->follow(*init.signal.value());
>+    } else
>+        m_signal->follow(input.m_signal);
>+
>     if (init.headers) {
>         auto fillResult = m_headers->fill(*init.headers);
>         if (fillResult.hasException())
>@@ -293,6 +302,7 @@ ExceptionOr<Ref<FetchRequest>> FetchRequest::clone(ScriptExecutionContext& conte
> 
>     auto clone = adoptRef(*new FetchRequest(context, WTF::nullopt, FetchHeaders::create(m_headers.get()), ResourceRequest { m_request }, FetchOptions { m_options}, String { m_referrer }));
>     clone->cloneBody(*this);
>+    clone->m_signal->follow(m_signal);
>     return WTFMove(clone);
> }
> 
>diff --git a/Source/WebCore/Modules/fetch/FetchRequest.h b/Source/WebCore/Modules/fetch/FetchRequest.h
>index ccdbf86ab3884c3cf98fb51f34990a5d40128b69..e85d1347cf0747c37f05c7b52420c7eab4aa1a2b 100644
>--- a/Source/WebCore/Modules/fetch/FetchRequest.h
>+++ b/Source/WebCore/Modules/fetch/FetchRequest.h
>@@ -28,6 +28,7 @@
> 
> #pragma once
> 
>+#include "AbortSignal.h"
> #include "ExceptionOr.h"
> #include "FetchBodyOwner.h"
> #include "FetchOptions.h"
>@@ -68,6 +69,7 @@ public:
>     Cache cache() const { return m_options.cache; }
>     Redirect redirect() const { return m_options.redirect; }
>     bool keepalive() const { return m_options.keepAlive; };
>+    AbortSignal& signal() { return m_signal.get(); }
> 
>     const String& integrity() const { return m_options.integrity; }
> 
>@@ -96,6 +98,7 @@ private:
>     FetchOptions m_options;
>     String m_referrer;
>     mutable String m_requestURL;
>+    Ref<AbortSignal> m_signal;
> };
> 
> inline FetchRequest::FetchRequest(ScriptExecutionContext& context, Optional<FetchBody>&& body, Ref<FetchHeaders>&& headers, ResourceRequest&& request, FetchOptions&& options, String&& referrer)
>@@ -103,6 +106,7 @@ inline FetchRequest::FetchRequest(ScriptExecutionContext& context, Optional<Fetc
>     , m_request(WTFMove(request))
>     , m_options(WTFMove(options))
>     , m_referrer(WTFMove(referrer))
>+    , m_signal(AbortSignal::create(context))
> {
>     updateContentType();
> }
>diff --git a/Source/WebCore/Modules/fetch/FetchRequest.idl b/Source/WebCore/Modules/fetch/FetchRequest.idl
>index 80a41f8fa96e420a58f2acc410ded218eee04745..dd2ec8f52cb05877ba48b3e2134540c0eab17e69 100644
>--- a/Source/WebCore/Modules/fetch/FetchRequest.idl
>+++ b/Source/WebCore/Modules/fetch/FetchRequest.idl
>@@ -55,6 +55,7 @@ typedef (Blob or BufferSource or DOMFormData or URLSearchParams or ReadableStrea
>     readonly attribute FetchRequestRedirect redirect;
>     readonly attribute DOMString integrity;
>     [EnabledAtRuntime=FetchAPIKeepAlive] readonly attribute boolean keepalive;
>+    readonly attribute AbortSignal signal;
> 
>     [CallWith=ScriptExecutionContext, MayThrowException, NewObject] FetchRequest clone();
> };
>diff --git a/Source/WebCore/Modules/fetch/FetchRequestInit.h b/Source/WebCore/Modules/fetch/FetchRequestInit.h
>index d2cb809564c21ae6ee7a48505cfdc6e6489939c2..a8d374b53060960c1472845f2394822027af9e37 100644
>--- a/Source/WebCore/Modules/fetch/FetchRequestInit.h
>+++ b/Source/WebCore/Modules/fetch/FetchRequestInit.h
>@@ -25,6 +25,7 @@
> 
> #pragma once
> 
>+#include "AbortSignal.h"
> #include "FetchBody.h"
> #include "FetchHeaders.h"
> #include "FetchOptions.h"
>@@ -46,9 +47,10 @@ struct FetchRequestInit {
>     Optional<FetchOptions::Redirect> redirect;
>     String integrity;
>     Optional<bool> keepalive;
>+    Optional<AbortSignal*> signal;
>     JSC::JSValue window;
> 
>-    bool hasMembers() const { return !method.isEmpty() || headers || body || !referrer.isEmpty() || referrerPolicy || mode || credentials || cache || redirect || !integrity.isEmpty() || keepalive || !window.isUndefined(); }
>+    bool hasMembers() const { return !method.isEmpty() || headers || body || !referrer.isEmpty() || referrerPolicy || mode || credentials || cache || redirect || !integrity.isEmpty() || keepalive || !window.isUndefined() || signal; }
> };
> 
> }
>diff --git a/Source/WebCore/Modules/fetch/FetchRequestInit.idl b/Source/WebCore/Modules/fetch/FetchRequestInit.idl
>index d007bddbf79b75ddf7ca2b219c7e4d40aa0a1813..cc7ca55e2c28a40567a49884bd3228c94162ed97 100644
>--- a/Source/WebCore/Modules/fetch/FetchRequestInit.idl
>+++ b/Source/WebCore/Modules/fetch/FetchRequestInit.idl
>@@ -39,5 +39,6 @@ dictionary FetchRequestInit {
>     FetchRequestRedirect redirect;
>     DOMString integrity;
>     boolean keepalive;
>+    AbortSignal? signal;
>     any window; // can only be set to null
> };
>diff --git a/Source/WebCore/Modules/fetch/FetchResponse.cpp b/Source/WebCore/Modules/fetch/FetchResponse.cpp
>index 61fe682f6366c167a36ae5e1d41b7b95f94447f3..f5417aa0d0bc70d9c7f1c2ff3eb22ae631479d98 100644
>--- a/Source/WebCore/Modules/fetch/FetchResponse.cpp
>+++ b/Source/WebCore/Modules/fetch/FetchResponse.cpp
>@@ -179,7 +179,6 @@ ExceptionOr<Ref<FetchResponse>> FetchResponse::clone(ScriptExecutionContext& con
>         m_internalResponse.setHTTPHeaderFields(HTTPHeaderMap { headers().internalHeaders() });
> 
>     auto clone = FetchResponse::create(context, WTF::nullopt, headers().guard(), ResourceResponse { m_internalResponse });
>-    clone->m_loadingError = m_loadingError;
>     clone->cloneBody(*this);
>     clone->m_opaqueLoadIdentifier = m_opaqueLoadIdentifier;
>     clone->m_bodySizeWithPadding = m_bodySizeWithPadding;
>@@ -188,15 +187,47 @@ ExceptionOr<Ref<FetchResponse>> FetchResponse::clone(ScriptExecutionContext& con
> 
> void FetchResponse::fetch(ScriptExecutionContext& context, FetchRequest& request, NotificationCallback&& responseCallback)
> {
>+    if (request.signal().aborted()) {
>+        responseCallback(Exception { AbortError, "Request signal is aborted"_s });
>+        // FIXME: Cancel request body if it is a stream.
>+        return;
>+    }
>+
>     if (request.hasReadableStreamBody()) {
>-        if (responseCallback)
>-            responseCallback(Exception { NotSupportedError, "ReadableStream uploading is not supported" });
>+        responseCallback(Exception { NotSupportedError, "ReadableStream uploading is not supported"_s });
>         return;
>     }
>     auto response = adoptRef(*new FetchResponse(context, FetchBody { }, FetchHeaders::create(FetchHeaders::Guard::Immutable), { }));
> 
>     response->body().consumer().setAsLoading();
> 
>+    request.signal().ref();
>+    request.signal().addAlgorithm([response = makeWeakPtr(response.ptr())] {
>+        // FIXME: Cancel request body if it is a stream.
>+        if (!response)
>+            return;
>+
>+        response->setLoadingError(Exception { AbortError, "Loading failed"_s });
>+
>+        if (response->m_bodyLoader) {
>+            if (auto callback = response->m_bodyLoader->takeNotificationCallback())
>+                callback(Exception { AbortError, "Fetch is aborted"_s });
>+        }
>+
>+        if (response->m_readableStreamSource) {
>+            if (!response->m_readableStreamSource->isCancelling())
>+                response->m_readableStreamSource->error(*response->loadingException());
>+            response->m_readableStreamSource = nullptr;
>+        }
>+        if (response->m_body)
>+            response->m_body->loadingFailed(*response->loadingException());
>+
>+        if (response->m_bodyLoader) {
>+            response->m_bodyLoader->stop();
>+            response->m_bodyLoader = std::nullopt;
>+        }
>+    });
>+
>     response->m_bodyLoader.emplace(response.get(), WTFMove(responseCallback));
>     if (!response->m_bodyLoader->start(context, request))
>         response->m_bodyLoader = WTF::nullopt;
>@@ -245,7 +276,7 @@ void FetchResponse::BodyLoader::didFail(const ResourceError& error)
> {
>     ASSERT(m_response.hasPendingActivity());
> 
>-    m_response.m_loadingError = error;
>+    m_response.setLoadingError(ResourceError { error });
> 
>     if (auto responseCallback = WTFMove(m_responseCallback))
>         responseCallback(Exception { TypeError, error.localizedDescription() });
>@@ -256,7 +287,7 @@ void FetchResponse::BodyLoader::didFail(const ResourceError& error)
> #if ENABLE(STREAMS_API)
>     if (m_response.m_readableStreamSource) {
>         if (!m_response.m_readableStreamSource->isCancelling())
>-            m_response.m_readableStreamSource->error(makeString("Loading failed: "_s, error.localizedDescription()));
>+            m_response.m_readableStreamSource->error(*m_response.loadingException());
>         m_response.m_readableStreamSource = nullptr;
>     }
> #endif
>diff --git a/Source/WebCore/Modules/fetch/FetchResponse.h b/Source/WebCore/Modules/fetch/FetchResponse.h
>index 97f7d3b0b811dfe25d4261eefdf9ab38ce299638..71b04e197d09bb33e9a048a5dc4869f08b7b5c6f 100644
>--- a/Source/WebCore/Modules/fetch/FetchResponse.h
>+++ b/Source/WebCore/Modules/fetch/FetchResponse.h
>@@ -33,6 +33,7 @@
> #include "ReadableStreamSink.h"
> #include "ResourceResponse.h"
> #include <JavaScriptCore/TypedArrays.h>
>+#include <wtf/WeakPtr.h>
> 
> namespace JSC {
> class ExecState;
>@@ -45,7 +46,7 @@ class FetchRequest;
> struct ReadableStreamChunk;
> class ReadableStreamSource;
> 
>-class FetchResponse final : public FetchBodyOwner {
>+class FetchResponse final : public FetchBodyOwner, public CanMakeWeakPtr<FetchResponse> {
> public:
>     using Type = ResourceResponse::Type;
> 
>@@ -137,6 +138,7 @@ private:
> #if ENABLE(STREAMS_API)
>         RefPtr<SharedBuffer> startStreaming();
> #endif
>+        NotificationCallback takeNotificationCallback() { return WTFMove(m_responseCallback); }
> 
>     private:
>         // FetchLoaderClient API
>diff --git a/Source/WebCore/bindings/js/ReadableStreamDefaultController.h b/Source/WebCore/bindings/js/ReadableStreamDefaultController.h
>index 484c8d81e7bc61aae396bac58ca6c234cbfd99ca..a7e4e7abfa925f07778b97bca58711a91f41ac24 100644
>--- a/Source/WebCore/bindings/js/ReadableStreamDefaultController.h
>+++ b/Source/WebCore/bindings/js/ReadableStreamDefaultController.h
>@@ -49,8 +49,7 @@ public:
> 
>     bool enqueue(RefPtr<JSC::ArrayBuffer>&&);
> 
>-    template<class ResolveResultType>
>-    void error(const ResolveResultType&);
>+    void error(const Exception&);
> 
>     void close() { invoke(*globalObject().globalExec(), jsController(), "close", JSC::jsUndefined()); }
> 
>@@ -104,12 +103,11 @@ inline bool ReadableStreamDefaultController::enqueue(RefPtr<JSC::ArrayBuffer>&&
>     return true;
> }
> 
>-template<>
>-inline void ReadableStreamDefaultController::error<String>(const String& errorMessage)
>+inline void ReadableStreamDefaultController::error(const Exception& exception)
> {
>     JSC::ExecState& state = globalExec();
>     JSC::JSLockHolder locker(&state);
>-    error(state, JSC::createTypeError(&state, errorMessage));
>+    error(state, createDOMException(&state, exception.code(), exception.message()));
> }
> 
> } // namespace WebCore
>diff --git a/Source/WebCore/dom/AbortSignal.cpp b/Source/WebCore/dom/AbortSignal.cpp
>index 512ecae3c56c9a16e52f25c0eeecb9cc0cfd8e8f..f17722a27d3bd2471ece24c3ffa2027b3baec176 100644
>--- a/Source/WebCore/dom/AbortSignal.cpp
>+++ b/Source/WebCore/dom/AbortSignal.cpp
>@@ -37,7 +37,6 @@ Ref<AbortSignal> AbortSignal::create(ScriptExecutionContext& context)
>     return adoptRef(*new AbortSignal(context));
> }
> 
>-
> AbortSignal::AbortSignal(ScriptExecutionContext& context)
>     : ContextDestructionObserver(&context)
> {
>@@ -52,13 +51,31 @@ void AbortSignal::abort()
>     
>     // 2. Set signalâs aborted flag.
>     m_aborted = true;
>-    
>-    // 3. For each algorithm in signal's abort algorithms: run algorithm.
>-    // 4. Empty signal's abort algorithms.
>-    // FIXME: Add support for 'abort algorithms' - https://dom.spec.whatwg.org/#abortsignal-abort-algorithms
>+
>+    auto algorithms = WTFMove(m_algorithms);
>+    for (auto& algorithm : algorithms)
>+        algorithm();
> 
>     // 5. Fire an event named abort at signal.
>     dispatchEvent(Event::create(eventNames().abortEvent, Event::CanBubble::No, Event::IsCancelable::No));
> }
> 
>+// https://dom.spec.whatwg.org/#abortsignal-follow
>+void AbortSignal::follow(AbortSignal& signal)
>+{
>+    if (aborted())
>+        return;
>+
>+    if (signal.aborted()) {
>+        abort();
>+        return;
>+    }
>+
>+    signal.addAlgorithm([weakThis = makeWeakPtr(this)] {
>+        if (!weakThis)
>+            return;
>+        weakThis->abort();
>+    });
>+}
>+
> }
>diff --git a/Source/WebCore/dom/AbortSignal.h b/Source/WebCore/dom/AbortSignal.h
>index d3140acc2d8291454636a903c4be573981b1cbc1..a89be55f0b2e73d1206e13283dfb958800e6bfa1 100644
>--- a/Source/WebCore/dom/AbortSignal.h
>+++ b/Source/WebCore/dom/AbortSignal.h
>@@ -27,14 +27,16 @@
> 
> #include "ContextDestructionObserver.h"
> #include "EventTarget.h"
>+#include <wtf/Function.h>
> #include <wtf/Ref.h>
> #include <wtf/RefCounted.h>
>+#include <wtf/WeakPtr.h>
> 
> namespace WebCore {
> 
> class ScriptExecutionContext;
> 
>-class AbortSignal final : public RefCounted<AbortSignal>, public EventTargetWithInlineData, private ContextDestructionObserver {
>+class AbortSignal final : public RefCounted<AbortSignal>, public EventTargetWithInlineData, public CanMakeWeakPtr<AbortSignal>, private ContextDestructionObserver {
> public:
>     static Ref<AbortSignal> create(ScriptExecutionContext&);
> 
>@@ -45,6 +47,11 @@ public:
>     using RefCounted::ref;
>     using RefCounted::deref;
> 
>+    using Algorithm = WTF::Function<void()>;
>+    void addAlgorithm(Algorithm&& algorithm) { m_algorithms.append(WTFMove(algorithm)); }
>+
>+    void follow(AbortSignal&);
>+
> private:
>     explicit AbortSignal(ScriptExecutionContext&);
> 
>@@ -54,6 +61,7 @@ private:
>     void derefEventTarget() final { deref(); }
>     
>     bool m_aborted { false };
>+    Vector<Algorithm> m_algorithms;
> };
> 
> }
>diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
>index cb4007d020aea4e1da0cbfe7a2d46324cf828cd5..2acd43f8627e24c33f2172d91f587fa47d6c8a7d 100644
>--- a/LayoutTests/ChangeLog
>+++ b/LayoutTests/ChangeLog
>@@ -1,3 +1,13 @@
>+2018-12-21  Youenn Fablet  <youenn@apple.com>
>+
>+        [Fetch API] Implement abortable fetch
>+        https://bugs.webkit.org/show_bug.cgi?id=174980
>+        <rdar://problem/46861402>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        * TestExpectations: Enable abort tests.
>+
> 2018-12-20  Brent Fulgham  <bfulgham@apple.com>
> 
>         Show punycode if URL contains Latin small letter dotless i
>diff --git a/LayoutTests/imported/w3c/ChangeLog b/LayoutTests/imported/w3c/ChangeLog
>index be7c47b2803f102e8fbf03cc296f332b57427ee8..ac5f2fb7ba8bde6f50f58616c5fbaa096ecdd6f0 100644
>--- a/LayoutTests/imported/w3c/ChangeLog
>+++ b/LayoutTests/imported/w3c/ChangeLog
>@@ -1,3 +1,22 @@
>+2018-12-21  Youenn Fablet  <youenn@apple.com>
>+
>+        [Fetch API] Implement abortable fetch
>+        https://bugs.webkit.org/show_bug.cgi?id=174980
>+        <rdar://problem/46861402>
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Fixed tests to run in WebKit CI.
>+        Also fixed a bug in a test where the fetch response body is not actually empty.
>+
>+        * web-platform-tests/fetch/api/abort/cache.https-expected.txt:
>+        * web-platform-tests/fetch/api/abort/general-serviceworker.https-expected.txt:
>+        * web-platform-tests/fetch/api/abort/general.any-expected.txt:
>+        * web-platform-tests/fetch/api/abort/general.any.js:
>+        * web-platform-tests/fetch/api/abort/general.any.worker-expected.txt:
>+        * web-platform-tests/fetch/api/abort/serviceworker-intercepted.https-expected.txt:
>+        * web-platform-tests/fetch/api/response/response-consume-stream-expected.txt:
>+
> 2018-12-21  Manuel Rego Casasnovas  <rego@igalia.com>
> 
>         [css-grid] Fix percentages in relative offsets for grid items
>diff --git a/LayoutTests/TestExpectations b/LayoutTests/TestExpectations
>index f5643c2c3a4c029c1b72f27729ca58cc21b87c96..d65ca368c21cb8645d073c37c740ab8a687a7003 100644
>--- a/LayoutTests/TestExpectations
>+++ b/LayoutTests/TestExpectations
>@@ -211,7 +211,6 @@ imported/w3c/web-platform-tests/service-workers/service-worker/worker-client-id.
> imported/w3c/web-platform-tests/cors/remote-origin.htm [ Skip ]
> 
> # Skip service worker tests that are timing out.
>-imported/w3c/web-platform-tests/fetch/api/abort/general-serviceworker.https.html [ Skip ]
> imported/w3c/web-platform-tests/service-workers/service-worker/performance-timeline.https.html [ Skip ]
> imported/w3c/web-platform-tests/service-workers/service-worker/respond-with-body-accessed-response.https.html [ Skip ]
> imported/w3c/web-platform-tests/service-workers/service-worker/sandboxed-iframe-fetch-event.https.html [ Skip ]
>@@ -383,10 +382,6 @@ webkit.org/b/189905 imported/w3c/web-platform-tests/resource-timing/resource_ini
> webkit.org/b/189910 imported/w3c/web-platform-tests/resource-timing/resource_timing_store_and_clear_during_callback.html [ Pass Failure ]
> webkit.org/b/190523 imported/w3c/web-platform-tests/resource-timing/resource_timing_cross_origin_redirect_chain.html [ Pass Failure ]
> 
>-# The follow two tests change their output each run
>-imported/w3c/web-platform-tests/fetch/api/abort/general.any.html [ Skip ]
>-imported/w3c/web-platform-tests/fetch/api/abort/general.any.worker.html [ Skip ]
>-
> # These tests time out
> imported/w3c/web-platform-tests/fetch/api/request/destination/fetch-destination-no-load-event.https.html [ Skip ]
> imported/w3c/web-platform-tests/fetch/api/request/destination/fetch-destination.https.html [ Skip ]
>diff --git a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/cache.https-expected.txt b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/cache.https-expected.txt
>index 6a9770883c98c96ebef529e8c409f50c5a090f09..08a1867cba2b2ffcd1a6de6f348cbea402841966 100644
>--- a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/cache.https-expected.txt
>+++ b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/cache.https-expected.txt
>@@ -1,4 +1,4 @@
> 
>-FAIL Signals are not stored in the cache API promise_test: Unhandled rejection with value: object "TypeError: undefined is not an object (evaluating 'cachedRequest.signal.aborted')"
>-FAIL Signals are not stored in the cache API, even if they're already aborted promise_test: Unhandled rejection with value: object "TypeError: undefined is not an object (evaluating 'cachedRequest.signal.aborted')"
>+PASS Signals are not stored in the cache API 
>+PASS Signals are not stored in the cache API, even if they're already aborted 
> 
>diff --git a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general-serviceworker.https-expected.txt b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general-serviceworker.https-expected.txt
>index 9ee4d9c1b7352c0c4b1fa15db47840d7657e5deb..471bc341bfcdcf31c0149b15c89763da66f44999 100644
>--- a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general-serviceworker.https-expected.txt
>+++ b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general-serviceworker.https-expected.txt
>@@ -1,8 +1,6 @@
> 
>-Harness Error (TIMEOUT), message = null
>-
>-FAIL Aborting rejects with AbortError assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Aborting rejects with AbortError - no-cors assert_throws: function "function () { throw e }" threw object "TypeError: A server with the specified hostname could not be found." that is not a DOMException AbortError: property "code" is equal to undefined, expected 20
>+PASS Aborting rejects with AbortError 
>+PASS Aborting rejects with AbortError - no-cors 
> PASS TypeError from request constructor takes priority - RequestInit's window is not null 
> PASS TypeError from request constructor takes priority - Input URL is not valid 
> PASS TypeError from request constructor takes priority - Input URL has credentials 
>@@ -19,34 +17,34 @@ PASS TypeError from request constructor takes priority - Bad mode init parameter
> PASS TypeError from request constructor takes priority - Bad credentials init parameter value 
> PASS TypeError from request constructor takes priority - Bad cache init parameter value 
> PASS TypeError from request constructor takes priority - Bad redirect init parameter value 
>-FAIL Request objects have a signal property assert_true: Signal member is present & truthy expected true got false
>-FAIL Signal on request object assert_true: Signal member is present & truthy expected true got false
>-FAIL Signal on request object created from request object assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal on request object created from request object, with signal on second request assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal on request object created from request object, with signal on second request overriding another assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal retained after unrelated properties are overridden by fetch assert_unreached: Should have rejected: undefined Reached unreachable code
>+PASS Request objects have a signal property 
>+PASS Signal on request object 
>+PASS Signal on request object created from request object 
>+PASS Signal on request object created from request object, with signal on second request 
>+PASS Signal on request object created from request object, with signal on second request overriding another 
>+PASS Signal retained after unrelated properties are overridden by fetch 
> PASS Signal removed by setting to null 
>-FAIL Already aborted signal rejects immediately assert_unreached: Fetch must not resolve Reached unreachable code
>+PASS Already aborted signal rejects immediately 
> PASS Request is still 'used' if signal is aborted before fetching 
>-FAIL response.arrayBuffer() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.blob() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.formData() rejects if already aborted assert_throws: function "function () { throw e }" threw object "NotSupportedError: The operation is not supported." that is not a DOMException AbortError: property "code" is equal to 9, expected 20
>-FAIL response.json() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.text() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Already aborted signal does not make request assert_equals: Request hasn't been made to the server expected (object) null but got (string) "open"
>-FAIL Already aborted signal can be used for many fetches assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal can be used to abort other fetches, even if another fetch succeeded before aborting assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Underlying connection is closed when aborting after receiving response promise_test: Unhandled rejection with value: object "Error: Timed out"
>-FAIL Underlying connection is closed when aborting after receiving response - no-cors promise_test: Unhandled rejection with value: object "TypeError: A server with the specified hostname could not be found."
>-TIMEOUT Fetch aborted & connection closed when aborted after calling response.arrayBuffer() Test timed out
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.blob() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.formData() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.json() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.text() 
>-NOTRUN Stream errors once aborted. Underlying connection closed. 
>-NOTRUN Stream errors once aborted, after reading. Underlying connection closed. 
>-NOTRUN Stream will not error if body is empty. It's closed with an empty queue before it errors. 
>-NOTRUN Readable stream synchronously cancels with AbortError if aborted before reading 
>-FAIL Signal state is cloned undefined is not an object (evaluating 'request.signal.aborted')
>-FAIL Clone aborts with original controller undefined is not an object (evaluating 'request.signal.addEventListener')
>+PASS response.arrayBuffer() rejects if already aborted 
>+PASS response.blob() rejects if already aborted 
>+PASS response.formData() rejects if already aborted 
>+PASS response.json() rejects if already aborted 
>+PASS response.text() rejects if already aborted 
>+PASS Already aborted signal does not make request 
>+PASS Already aborted signal can be used for many fetches 
>+PASS Signal can be used to abort other fetches, even if another fetch succeeded before aborting 
>+PASS Underlying connection is closed when aborting after receiving response 
>+PASS Underlying connection is closed when aborting after receiving response - no-cors 
>+PASS Fetch aborted & connection closed when aborted after calling response.arrayBuffer() 
>+PASS Fetch aborted & connection closed when aborted after calling response.blob() 
>+FAIL Fetch aborted & connection closed when aborted after calling response.formData() assert_throws: function "function () { throw e }" threw object "NotSupportedError: The operation is not supported." that is not a DOMException AbortError: property "code" is equal to 9, expected 20
>+PASS Fetch aborted & connection closed when aborted after calling response.json() 
>+PASS Fetch aborted & connection closed when aborted after calling response.text() 
>+PASS Stream errors once aborted. Underlying connection closed. 
>+PASS Stream errors once aborted, after reading. Underlying connection closed. 
>+PASS Stream will not error if body is empty. It's closed with an empty queue before it errors. 
>+FAIL Readable stream synchronously cancels with AbortError if aborted before reading assert_true: Cancel called sync expected true got false
>+PASS Signal state is cloned 
>+PASS Clone aborts with original controller 
> 
>diff --git a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any-expected.txt b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any-expected.txt
>index e90ed02bce5c85a53769da66e92b9d9611878af1..e7fde2ecf08ca1d2a28df09d5bae10f21d819c94 100644
>--- a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any-expected.txt
>+++ b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any-expected.txt
>@@ -1,12 +1,7 @@
>-Blocked access to external URL http://www1.localhost:8800/fetch/api/resources/data.json
>-CONSOLE MESSAGE: line 36: Fetch API cannot load http://www1.localhost:8800/fetch/api/resources/data.json due to access control checks.
>-Blocked access to external URL http://www1.localhost:8800/fetch/api/resources/infinite-slow-response.py?stateKey=28d5c068-417e-4c81-a0cd-9b8c22aed3c1&abortKey=ef9a1b5a-7afd-4734-b145-f033788c0e6b
>-CONSOLE MESSAGE: line 318: Fetch API cannot load http://www1.localhost:8800/fetch/api/resources/infinite-slow-response.py?stateKey=28d5c068-417e-4c81-a0cd-9b8c22aed3c1&abortKey=ef9a1b5a-7afd-4734-b145-f033788c0e6b due to access control checks.
>+CONSOLE MESSAGE: Unhandled Promise Rejection: AbortError: Request signal is aborted
> 
>-Harness Error (TIMEOUT), message = null
>-
>-FAIL Aborting rejects with AbortError assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Aborting rejects with AbortError - no-cors assert_throws: function "function () { throw e }" threw object "TypeError: Type error" that is not a DOMException AbortError: property "code" is equal to undefined, expected 20
>+PASS Aborting rejects with AbortError 
>+PASS Aborting rejects with AbortError - no-cors 
> PASS TypeError from request constructor takes priority - RequestInit's window is not null 
> PASS TypeError from request constructor takes priority - Input URL is not valid 
> PASS TypeError from request constructor takes priority - Input URL has credentials 
>@@ -15,7 +10,6 @@ PASS TypeError from request constructor takes priority - RequestInit's referrer
> PASS TypeError from request constructor takes priority - RequestInit's method is invalid 
> PASS TypeError from request constructor takes priority - RequestInit's method is forbidden 
> PASS TypeError from request constructor takes priority - RequestInit's mode is no-cors and method is not simple 
>-PASS TypeError from request constructor takes priority - RequestInit's mode is no-cors and integrity is not empty 
> PASS TypeError from request constructor takes priority - RequestInit's cache mode is only-if-cached and mode is not same-origin 
> PASS TypeError from request constructor takes priority - Request with cache mode: only-if-cached and fetch mode cors 
> PASS TypeError from request constructor takes priority - Request with cache mode: only-if-cached and fetch mode no-cors 
>@@ -24,34 +18,34 @@ PASS TypeError from request constructor takes priority - Bad mode init parameter
> PASS TypeError from request constructor takes priority - Bad credentials init parameter value 
> PASS TypeError from request constructor takes priority - Bad cache init parameter value 
> PASS TypeError from request constructor takes priority - Bad redirect init parameter value 
>-FAIL Request objects have a signal property assert_true: Signal member is present & truthy expected true got false
>-FAIL Signal on request object assert_true: Signal member is present & truthy expected true got false
>-FAIL Signal on request object created from request object assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal on request object created from request object, with signal on second request assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal on request object created from request object, with signal on second request overriding another assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal retained after unrelated properties are overridden by fetch assert_unreached: Should have rejected: undefined Reached unreachable code
>+PASS Request objects have a signal property 
>+PASS Signal on request object 
>+PASS Signal on request object created from request object 
>+PASS Signal on request object created from request object, with signal on second request 
>+PASS Signal on request object created from request object, with signal on second request overriding another 
>+PASS Signal retained after unrelated properties are overridden by fetch 
> PASS Signal removed by setting to null 
>-FAIL Already aborted signal rejects immediately assert_unreached: Fetch must not resolve Reached unreachable code
>+PASS Already aborted signal rejects immediately 
> PASS Request is still 'used' if signal is aborted before fetching 
>-FAIL response.arrayBuffer() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.blob() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.formData() rejects if already aborted assert_throws: function "function () { throw e }" threw object "NotSupportedError: The operation is not supported." that is not a DOMException AbortError: property "code" is equal to 9, expected 20
>-FAIL response.json() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.text() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Already aborted signal does not make request assert_equals: Request hasn't been made to the server expected (object) null but got (string) "open"
>-FAIL Already aborted signal can be used for many fetches assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal can be used to abort other fetches, even if another fetch succeeded before aborting assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Underlying connection is closed when aborting after receiving response promise_test: Unhandled rejection with value: object "Error: Timed out"
>-FAIL Underlying connection is closed when aborting after receiving response - no-cors promise_test: Unhandled rejection with value: object "TypeError: Type error"
>-TIMEOUT Fetch aborted & connection closed when aborted after calling response.arrayBuffer() Test timed out
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.blob() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.formData() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.json() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.text() 
>-NOTRUN Stream errors once aborted. Underlying connection closed. 
>-NOTRUN Stream errors once aborted, after reading. Underlying connection closed. 
>-NOTRUN Stream will not error if body is empty. It's closed with an empty queue before it errors. 
>-NOTRUN Readable stream synchronously cancels with AbortError if aborted before reading 
>-FAIL Signal state is cloned undefined is not an object (evaluating 'request.signal.aborted')
>-FAIL Clone aborts with original controller undefined is not an object (evaluating 'request.signal.addEventListener')
>+PASS response.arrayBuffer() rejects if already aborted 
>+PASS response.blob() rejects if already aborted 
>+PASS response.formData() rejects if already aborted 
>+PASS response.json() rejects if already aborted 
>+PASS response.text() rejects if already aborted 
>+PASS Already aborted signal does not make request 
>+PASS Already aborted signal can be used for many fetches 
>+PASS Signal can be used to abort other fetches, even if another fetch succeeded before aborting 
>+PASS Underlying connection is closed when aborting after receiving response 
>+PASS Underlying connection is closed when aborting after receiving response - no-cors 
>+PASS Fetch aborted & connection closed when aborted after calling response.arrayBuffer() 
>+PASS Fetch aborted & connection closed when aborted after calling response.blob() 
>+FAIL Fetch aborted & connection closed when aborted after calling response.formData() assert_throws: function "function () { throw e }" threw object "NotSupportedError: The operation is not supported." that is not a DOMException AbortError: property "code" is equal to 9, expected 20
>+PASS Fetch aborted & connection closed when aborted after calling response.json() 
>+PASS Fetch aborted & connection closed when aborted after calling response.text() 
>+PASS Stream errors once aborted. Underlying connection closed. 
>+PASS Stream errors once aborted, after reading. Underlying connection closed. 
>+PASS Stream will not error if body is empty. It's closed with an empty queue before it errors. 
>+FAIL Readable stream synchronously cancels with AbortError if aborted before reading assert_true: Cancel called sync expected true got false
>+PASS Signal state is cloned 
>+PASS Clone aborts with original controller 
> 
>diff --git a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.js b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.js
>index eb5979756fe8ad27698c1c43103652113c2fb337..2b3641b998de8f193c5b134f69f8816e3d2b5691 100644
>--- a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.js
>+++ b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.js
>@@ -1,4 +1,5 @@
> // META: script=/common/utils.js
>+// META: script=/common/get-host-info.sub.js
> // META: script=../request/request-error.js
> 
> const BODY_METHODS = ['arrayBuffer', 'blob', 'formData', 'json', 'text'];
>@@ -15,6 +16,9 @@ function abortRequests() {
>   );
> }
> 
>+const hostInfo = get_host_info();
>+const urlHostname = hostInfo.REMOTE_HOST;
>+
> promise_test(async t => {
>   const controller = new AbortController();
>   const signal = controller.signal;
>@@ -31,7 +35,7 @@ promise_test(async t => {
>   controller.abort();
> 
>   const url = new URL('../resources/data.json', location);
>-  url.hostname = 'www1.' + url.hostname;
>+  url.hostname = urlHostname;
> 
>   const fetchPromise = fetch(url, {
>     signal,
>@@ -314,7 +318,7 @@ promise_test(async t => {
>   requestAbortKeys.push(abortKey);
> 
>   const url = new URL(`../resources/infinite-slow-response.py?stateKey=${stateKey}&abortKey=${abortKey}`, location);
>-  url.hostname = 'www1.' + url.hostname;
>+  url.hostname = urlHostname;
> 
>   await fetch(url, {
>     signal,
>@@ -322,7 +326,7 @@ promise_test(async t => {
>   });
> 
>   const stashTakeURL = new URL(`../resources/stash-take.py?key=${stateKey}`, location);
>-  stashTakeURL.hostname = 'www1.' + stashTakeURL.hostname;
>+  stashTakeURL.hostname = urlHostname;
> 
>   const beforeAbortResult = await fetch(stashTakeURL).then(r => r.json());
>   assert_equals(beforeAbortResult, "open", "Connection is open");
>@@ -440,7 +444,7 @@ promise_test(async t => {
>   const controller = new AbortController();
>   const signal = controller.signal;
> 
>-  const response = await fetch(`../resources/empty.txt`, { signal });
>+  const response = await fetch(`../resources/method.py`, { signal });
> 
>   // Read whole response to ensure close signal has sent.
>   await response.clone().text();
>diff --git a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.worker-expected.txt b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.worker-expected.txt
>index 25eee9fcda9fb800556e51122f7e2db1b97e86f1..471bc341bfcdcf31c0149b15c89763da66f44999 100644
>--- a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.worker-expected.txt
>+++ b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/general.any.worker-expected.txt
>@@ -1,10 +1,6 @@
>-Blocked access to external URL http://www1.localhost:8800/fetch/api/resources/data.json
>-Blocked access to external URL http://www1.localhost:8800/fetch/api/resources/infinite-slow-response.py?stateKey=7471d98e-1bdb-4254-a315-9489c98b8f59&abortKey=4c631f17-2786-4b07-84f4-0a5760d28f1e
> 
>-Harness Error (TIMEOUT), message = null
>-
>-FAIL Aborting rejects with AbortError assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Aborting rejects with AbortError - no-cors assert_throws: function "function () { throw e }" threw object "TypeError: Type error" that is not a DOMException AbortError: property "code" is equal to undefined, expected 20
>+PASS Aborting rejects with AbortError 
>+PASS Aborting rejects with AbortError - no-cors 
> PASS TypeError from request constructor takes priority - RequestInit's window is not null 
> PASS TypeError from request constructor takes priority - Input URL is not valid 
> PASS TypeError from request constructor takes priority - Input URL has credentials 
>@@ -13,7 +9,6 @@ PASS TypeError from request constructor takes priority - RequestInit's referrer
> PASS TypeError from request constructor takes priority - RequestInit's method is invalid 
> PASS TypeError from request constructor takes priority - RequestInit's method is forbidden 
> PASS TypeError from request constructor takes priority - RequestInit's mode is no-cors and method is not simple 
>-PASS TypeError from request constructor takes priority - RequestInit's mode is no-cors and integrity is not empty 
> PASS TypeError from request constructor takes priority - RequestInit's cache mode is only-if-cached and mode is not same-origin 
> PASS TypeError from request constructor takes priority - Request with cache mode: only-if-cached and fetch mode cors 
> PASS TypeError from request constructor takes priority - Request with cache mode: only-if-cached and fetch mode no-cors 
>@@ -22,34 +17,34 @@ PASS TypeError from request constructor takes priority - Bad mode init parameter
> PASS TypeError from request constructor takes priority - Bad credentials init parameter value 
> PASS TypeError from request constructor takes priority - Bad cache init parameter value 
> PASS TypeError from request constructor takes priority - Bad redirect init parameter value 
>-FAIL Request objects have a signal property assert_true: Signal member is present & truthy expected true got false
>-FAIL Signal on request object assert_true: Signal member is present & truthy expected true got false
>-FAIL Signal on request object created from request object assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal on request object created from request object, with signal on second request assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal on request object created from request object, with signal on second request overriding another assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal retained after unrelated properties are overridden by fetch assert_unreached: Should have rejected: undefined Reached unreachable code
>+PASS Request objects have a signal property 
>+PASS Signal on request object 
>+PASS Signal on request object created from request object 
>+PASS Signal on request object created from request object, with signal on second request 
>+PASS Signal on request object created from request object, with signal on second request overriding another 
>+PASS Signal retained after unrelated properties are overridden by fetch 
> PASS Signal removed by setting to null 
>-FAIL Already aborted signal rejects immediately assert_unreached: Fetch must not resolve Reached unreachable code
>+PASS Already aborted signal rejects immediately 
> PASS Request is still 'used' if signal is aborted before fetching 
>-FAIL response.arrayBuffer() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.blob() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.formData() rejects if already aborted assert_throws: function "function () { throw e }" threw object "NotSupportedError: The operation is not supported." that is not a DOMException AbortError: property "code" is equal to 9, expected 20
>-FAIL response.json() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.text() rejects if already aborted assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Already aborted signal does not make request assert_equals: Request hasn't been made to the server expected (object) null but got (string) "open"
>-FAIL Already aborted signal can be used for many fetches assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Signal can be used to abort other fetches, even if another fetch succeeded before aborting assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL Underlying connection is closed when aborting after receiving response promise_test: Unhandled rejection with value: object "Error: Timed out"
>-FAIL Underlying connection is closed when aborting after receiving response - no-cors promise_test: Unhandled rejection with value: object "TypeError: Type error"
>-TIMEOUT Fetch aborted & connection closed when aborted after calling response.arrayBuffer() Test timed out
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.blob() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.formData() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.json() 
>-NOTRUN Fetch aborted & connection closed when aborted after calling response.text() 
>-NOTRUN Stream errors once aborted. Underlying connection closed. 
>-NOTRUN Stream errors once aborted, after reading. Underlying connection closed. 
>-NOTRUN Stream will not error if body is empty. It's closed with an empty queue before it errors. 
>-NOTRUN Readable stream synchronously cancels with AbortError if aborted before reading 
>-FAIL Signal state is cloned undefined is not an object (evaluating 'request.signal.aborted')
>-FAIL Clone aborts with original controller undefined is not an object (evaluating 'request.signal.addEventListener')
>+PASS response.arrayBuffer() rejects if already aborted 
>+PASS response.blob() rejects if already aborted 
>+PASS response.formData() rejects if already aborted 
>+PASS response.json() rejects if already aborted 
>+PASS response.text() rejects if already aborted 
>+PASS Already aborted signal does not make request 
>+PASS Already aborted signal can be used for many fetches 
>+PASS Signal can be used to abort other fetches, even if another fetch succeeded before aborting 
>+PASS Underlying connection is closed when aborting after receiving response 
>+PASS Underlying connection is closed when aborting after receiving response - no-cors 
>+PASS Fetch aborted & connection closed when aborted after calling response.arrayBuffer() 
>+PASS Fetch aborted & connection closed when aborted after calling response.blob() 
>+FAIL Fetch aborted & connection closed when aborted after calling response.formData() assert_throws: function "function () { throw e }" threw object "NotSupportedError: The operation is not supported." that is not a DOMException AbortError: property "code" is equal to 9, expected 20
>+PASS Fetch aborted & connection closed when aborted after calling response.json() 
>+PASS Fetch aborted & connection closed when aborted after calling response.text() 
>+PASS Stream errors once aborted. Underlying connection closed. 
>+PASS Stream errors once aborted, after reading. Underlying connection closed. 
>+PASS Stream will not error if body is empty. It's closed with an empty queue before it errors. 
>+FAIL Readable stream synchronously cancels with AbortError if aborted before reading assert_true: Cancel called sync expected true got false
>+PASS Signal state is cloned 
>+PASS Clone aborts with original controller 
> 
>diff --git a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/serviceworker-intercepted.https-expected.txt b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/serviceworker-intercepted.https-expected.txt
>index 114cf8a0cd9e5f313e2986a43a2a86597e1f8785..37d876380564c7bc77417266a9ad90f68c291514 100644
>--- a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/serviceworker-intercepted.https-expected.txt
>+++ b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/abort/serviceworker-intercepted.https-expected.txt
>@@ -1,9 +1,10 @@
> 
>-FAIL Already aborted request does not land in service worker assert_unreached: Should have rejected: undefined Reached unreachable code
>-FAIL response.arrayBuffer() rejects if already aborted promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed a ServiceWorker"
>-FAIL response.blob() rejects if already aborted promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed a ServiceWorker"
>-FAIL response.formData() rejects if already aborted promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed a ServiceWorker"
>-FAIL response.json() rejects if already aborted promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed a ServiceWorker"
>-FAIL response.text() rejects if already aborted promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed a ServiceWorker"
>-FAIL Stream errors once aborted. promise_test: Unhandled rejection with value: object "Error: wait_for_state must be passed a ServiceWorker"
>+
>+PASS Already aborted request does not land in service worker 
>+PASS response.arrayBuffer() rejects if already aborted 
>+PASS response.blob() rejects if already aborted 
>+PASS response.formData() rejects if already aborted 
>+PASS response.json() rejects if already aborted 
>+PASS response.text() rejects if already aborted 
>+FAIL Stream errors once aborted. assert_unreached: Should have rejected: undefined Reached unreachable code
> 
>diff --git a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/response/response-consume-stream-expected.txt b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/response/response-consume-stream-expected.txt
>index d48ac1b38aeee508b29dc2aae20e9ce62eab5f11..fe8d1c5e00aa1f472a63ab09dfbe81f027f58025 100644
>--- a/LayoutTests/imported/w3c/web-platform-tests/fetch/api/response/response-consume-stream-expected.txt
>+++ b/LayoutTests/imported/w3c/web-platform-tests/fetch/api/response/response-consume-stream-expected.txt
>@@ -5,7 +5,7 @@ PASS Read blob response's body as readableStream
> PASS Read text response's body as readableStream 
> PASS Read URLSearchParams response's body as readableStream 
> PASS Read array buffer response's body as readableStream 
>-FAIL Read form data response's body as readableStream promise_test: Unhandled rejection with value: object "TypeError: not implemented"
>+FAIL Read form data response's body as readableStream promise_test: Unhandled rejection with value: object "NotSupportedError: Not implemented."
> PASS Getting an error Response stream 
> PASS Getting a redirect Response stream 
>

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