Bug 1659025 - Implement [Transferable] for ReadableStream r=smaug,sfink

Differential Revision: https://phabricator.services.mozilla.com/D139525

dom/base/StructuredCloneHolder.cpp

@@ -46,12 +46,18 @@
 #include "mozilla/dom/MessagePortBinding.h"
 #include "mozilla/dom/OffscreenCanvas.h"
 #include "mozilla/dom/OffscreenCanvasBinding.h"
+#include "mozilla/dom/ReadableStream.h"
+#include "mozilla/dom/ReadableStreamBinding.h"
 #include "mozilla/dom/ScriptSettings.h"
 #include "mozilla/dom/StructuredCloneBlob.h"
 #include "mozilla/dom/StructuredCloneHolderBinding.h"
 #include "mozilla/dom/StructuredCloneTags.h"
 #include "mozilla/dom/ToJSValue.h"
+#include "mozilla/dom/TransformStream.h"
+#include "mozilla/dom/TransformStreamBinding.h"
 #include "mozilla/dom/WebIDLSerializable.h"
+#include "mozilla/dom/WritableStream.h"
+#include "mozilla/dom/WritableStreamBinding.h"
 #include "mozilla/dom/WorkerCommon.h"
 #include "mozilla/dom/WorkerPrivate.h"
 #include "mozilla/fallible.h"
@@ -1115,7 +1121,26 @@ bool StructuredCloneHolder::CustomWriteHandler(
   return WriteFullySerializableObjects(aCx, aWriter, aObj);
 }
 
-bool StructuredCloneHolder::CustomReadTransferHandler(
+already_AddRefed<MessagePort> StructuredCloneHolder::ReceiveMessagePort(
+    uint64_t aIndex) {
+  if (NS_WARN_IF(aIndex >= mPortIdentifiers.Length())) {
+    return nullptr;
+  }
+  UniqueMessagePortId portId(mPortIdentifiers[aIndex]);
+
+  ErrorResult rv;
+  RefPtr<MessagePort> port = MessagePort::Create(mGlobal, portId, rv);
+  if (NS_WARN_IF(rv.Failed())) {
+    rv.SuppressException();
+    return nullptr;
+  }
+
+  return port.forget();
+}
+
+// TODO: Convert this to MOZ_CAN_RUN_SCRIPT (bug 1415230)
+MOZ_CAN_RUN_SCRIPT_BOUNDARY bool
+StructuredCloneHolder::CustomReadTransferHandler(
     JSContext* aCx, JSStructuredCloneReader* aReader, uint32_t aTag,
     void* aContent, uint64_t aExtraData,
     JS::MutableHandleObject aReturnObject) {
@@ -1127,16 +1152,10 @@ bool StructuredCloneHolder::CustomReadTransferHandler(
       return false;
     }
 #endif
-    MOZ_ASSERT(aExtraData < mPortIdentifiers.Length());
-    UniqueMessagePortId portIdentifier(mPortIdentifiers[aExtraData]);
-
-    ErrorResult rv;
-    RefPtr<MessagePort> port = MessagePort::Create(mGlobal, portIdentifier, rv);
-    if (NS_WARN_IF(rv.Failed())) {
-      rv.SuppressException();
+    RefPtr<MessagePort> port = ReceiveMessagePort(aExtraData);
+    if (!port) {
       return false;
     }
-
     mTransferredPorts.AppendElement(port);
 
     JS::Rooted<JS::Value> value(aCx);
@@ -1186,10 +1205,56 @@ bool StructuredCloneHolder::CustomReadTransferHandler(
     return true;
   }
 
+  if (aTag == SCTAG_DOM_READABLESTREAM) {
+#ifdef FUZZING
+    if (aExtraData >= mPortIdentifiers.Length()) {
+      return false;
+    }
+#endif
+    RefPtr<MessagePort> port = ReceiveMessagePort(aExtraData);
+    if (!port) {
+      return false;
+    }
+    nsCOMPtr<nsIGlobalObject> global = mGlobal;
+    return ReadableStream::ReceiveTransfer(aCx, global, *port, aReturnObject);
+  }
+
+  if (aTag == SCTAG_DOM_WRITABLESTREAM) {
+#ifdef FUZZING
+    if (aExtraData >= mPortIdentifiers.Length()) {
+      return false;
+    }
+#endif
+    RefPtr<MessagePort> port = ReceiveMessagePort(aExtraData);
+    if (!port) {
+      return false;
+    }
+    nsCOMPtr<nsIGlobalObject> global = mGlobal;
+    return WritableStream::ReceiveTransfer(aCx, global, *port, aReturnObject);
+  }
+
+  if (aTag == SCTAG_DOM_TRANSFORMSTREAM) {
+#ifdef FUZZING
+    if (aExtraData + 1 >= mPortIdentifiers.Length()) {
+      return false;
+    }
+#endif
+    RefPtr<MessagePort> port1 = ReceiveMessagePort(aExtraData);
+    RefPtr<MessagePort> port2 = ReceiveMessagePort(aExtraData + 1);
+    if (!port1 || !port2) {
+      return false;
+    }
+    nsCOMPtr<nsIGlobalObject> global = mGlobal;
+    return TransformStream::ReceiveTransfer(aCx, global, *port1, *port2,
+                                            aReturnObject);
+  }
+
   return false;
 }
 
-bool StructuredCloneHolder::CustomWriteTransferHandler(
+// TODO: Convert this to MOZ_CAN_RUN_SCRIPT (bug 1415230)
+MOZ_CAN_RUN_SCRIPT_BOUNDARY bool
+StructuredCloneHolder::CustomWriteTransferHandler(
     JSContext* aCx, JS::Handle<JSObject*> aObj, uint32_t* aTag,
     JS::TransferableOwnership* aOwnership, void** aContent,
     uint64_t* aExtraData) {
@@ -1263,6 +1328,68 @@ bool StructuredCloneHolder::CustomWriteTransferHandler(
         return true;
       }
     }
+
+    {
+      RefPtr<ReadableStream> stream;
+      rv = UNWRAP_OBJECT(ReadableStream, &obj, stream);
+      if (NS_SUCCEEDED(rv)) {
+        MOZ_ASSERT(stream);
+
+        *aTag = SCTAG_DOM_READABLESTREAM;
+        *aOwnership = JS::SCTAG_TMO_CUSTOM;
+        *aContent = nullptr;
+
+        UniqueMessagePortId id;
+        if (!stream->Transfer(aCx, id)) {
+          return false;
+        }
+        *aExtraData = mPortIdentifiers.Length();
+        mPortIdentifiers.AppendElement(id.release());
+        return true;
+      }
+    }
+
+    {
+      RefPtr<WritableStream> stream;
+      rv = UNWRAP_OBJECT(WritableStream, &obj, stream);
+      if (NS_SUCCEEDED(rv)) {
+        MOZ_ASSERT(stream);
+
+        *aTag = SCTAG_DOM_WRITABLESTREAM;
+        *aOwnership = JS::SCTAG_TMO_CUSTOM;
+        *aContent = nullptr;
+
+        UniqueMessagePortId id;
+        if (!stream->Transfer(aCx, id)) {
+          return false;
+        }
+        *aExtraData = mPortIdentifiers.Length();
+        mPortIdentifiers.AppendElement(id.release());
+        return true;
+      }
+    }
+
+    {
+      RefPtr<TransformStream> stream;
+      rv = UNWRAP_OBJECT(TransformStream, &obj, stream);
+      if (NS_SUCCEEDED(rv)) {
+        MOZ_ASSERT(stream);
+
+        *aTag = SCTAG_DOM_TRANSFORMSTREAM;
+        *aOwnership = JS::SCTAG_TMO_CUSTOM;
+        *aContent = nullptr;
+
+        UniqueMessagePortId id1;
+        UniqueMessagePortId id2;
+        if (!stream->Transfer(aCx, id1, id2)) {
+          return false;
+        }
+        *aExtraData = mPortIdentifiers.Length();
+        mPortIdentifiers.AppendElement(id1.release());
+        mPortIdentifiers.AppendElement(id2.release());
+        return true;
+      }
+    }
   }
 
   return false;
@@ -1301,6 +1428,31 @@ void StructuredCloneHolder::CustomFreeTransferHandler(
     delete data;
     return;
   }
+
+  if (aTag == SCTAG_DOM_READABLESTREAM || aTag == SCTAG_DOM_WRITABLESTREAM) {
+    MOZ_ASSERT(!aContent);
+#ifdef FUZZING
+    if (aExtraData >= mPortIdentifiers.Length()) {
+      return;
+    }
+#endif
+    MOZ_ASSERT(aExtraData < mPortIdentifiers.Length());
+    MessagePort::ForceClose(mPortIdentifiers[aExtraData]);
+    return;
+  }
+
+  if (aTag == SCTAG_DOM_TRANSFORMSTREAM) {
+    MOZ_ASSERT(!aContent);
+#ifdef FUZZING
+    if (aExtraData + 1 >= mPortIdentifiers.Length()) {
+      return;
+    }
+#endif
+    MOZ_ASSERT(aExtraData + 1 < mPortIdentifiers.Length());
+    MessagePort::ForceClose(mPortIdentifiers[aExtraData]);
+    MessagePort::ForceClose(mPortIdentifiers[aExtraData + 1]);
+    return;
+  }
 }
 
 bool StructuredCloneHolder::CustomCanTransferHandler(
@@ -1342,6 +1494,40 @@ bool StructuredCloneHolder::CustomCanTransferHandler(
     }
   }
 
+  {
+    ReadableStream* stream = nullptr;
+    nsresult rv = UNWRAP_OBJECT(ReadableStream, &obj, stream);
+    if (NS_SUCCEEDED(rv)) {
+      // https://streams.spec.whatwg.org/#ref-for-transfer-steps
+      // Step 1: If ! IsReadableStreamLocked(value) is true, throw a
+      // "DataCloneError" DOMException.
+      return !IsReadableStreamLocked(stream);
+    }
+  }
+
+  {
+    WritableStream* stream = nullptr;
+    nsresult rv = UNWRAP_OBJECT(WritableStream, &obj, stream);
+    if (NS_SUCCEEDED(rv)) {
+      // https://streams.spec.whatwg.org/#ref-for-transfer-steps①
+      // Step 1: If ! IsWritableStreamLocked(value) is true, throw a
+      // "DataCloneError" DOMException.
+      return !IsWritableStreamLocked(stream);
+    }
+  }
+
+  {
+    TransformStream* stream = nullptr;
+    nsresult rv = UNWRAP_OBJECT(TransformStream, &obj, stream);
+    if (NS_SUCCEEDED(rv)) {
+      // https://streams.spec.whatwg.org/#ref-for-transfer-steps②
+      // Step 3 + 4: If ! Is{Readable,Writable}StreamLocked(value) is true,
+      // throw a "DataCloneError" DOMException.
+      return !IsReadableStreamLocked(stream->Readable()) &&
+             !IsWritableStreamLocked(stream->Writable());
+    }
+  }
+
   return false;
 }
 

dom/base/StructuredCloneHolder.h

@@ -335,6 +335,8 @@ class StructuredCloneHolder : public StructuredCloneHolderBase {
 
   void SameProcessScopeRequired(bool* aSameProcessScopeRequired);
 
+  already_AddRefed<MessagePort> ReceiveMessagePort(uint64_t aIndex);
+
   bool mSupportsCloning;
   bool mSupportsTransferring;
 

dom/base/StructuredCloneTags.h

@@ -140,6 +140,12 @@ enum StructuredCloneTags : uint32_t {
 
   SCTAG_DOM_CLONED_ERROR_OBJECT,
 
+  SCTAG_DOM_READABLESTREAM,
+
+  SCTAG_DOM_WRITABLESTREAM,
+
+  SCTAG_DOM_TRANSFORMSTREAM,
+
   // IMPORTANT: If you plan to add an new IDB tag, it _must_ be add before the
   // "less stable" tags!
 };

dom/events/Event.h

@@ -51,6 +51,7 @@ class EventMessageAutoOverride;
 class ExtendableEvent;
 class KeyboardEvent;
 class MouseEvent;
+class MessageEvent;
 class TimeEvent;
 class UIEvent;
 class WantsPopupControlCheck;
@@ -127,6 +128,9 @@ class Event : public nsISupports, public nsWrapperCache {
   // CustomEvent has a non-autogeneratable initCustomEvent.
   virtual CustomEvent* AsCustomEvent() { return nullptr; }
 
+  // MessageEvent has a non-autogeneratable initMessageEvent and more.
+  virtual MessageEvent* AsMessageEvent() { return nullptr; }
+
   void InitEvent(const nsAString& aEventTypeArg, bool aCanBubble,
                  bool aCancelable) {
     InitEvent(aEventTypeArg, aCanBubble ? CanBubble::eYes : CanBubble::eNo,

dom/events/MessageEvent.h

@@ -43,8 +43,10 @@ class MessageEvent final : public Event {
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(MessageEvent, Event)
 
-  virtual JSObject* WrapObjectInternal(
-      JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+  JSObject* WrapObjectInternal(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  MessageEvent* AsMessageEvent() override { return this; }
 
   void GetData(JSContext* aCx, JS::MutableHandle<JS::Value> aData,
                ErrorResult& aRv);

dom/streams/ReadableByteStreamController.cpp

@@ -19,7 +19,6 @@
 #include "mozilla/dom/ByteStreamHelpers.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/Promise-inl.h"
-#include "mozilla/dom/PromiseNativeHandler.h"
 #include "mozilla/dom/ReadableByteStreamController.h"
 #include "mozilla/dom/ReadableByteStreamControllerBinding.h"
 #include "mozilla/dom/ReadIntoRequest.h"

dom/streams/ReadableStream.h

@@ -37,6 +37,8 @@ using OwningReadableStreamReader =
     OwningReadableStreamDefaultReaderOrReadableStreamBYOBReader;
 class NativeUnderlyingSource;
 class BodyStreamHolder;
+class UniqueMessagePortId;
+class MessagePort;
 
 class ReadableStream final : public nsISupports, public nsWrapperCache {
  public:
@@ -95,6 +97,15 @@ class ReadableStream final : public nsISupports, public nsWrapperCache {
 
   void ReleaseObjects();
 
+  // [Transferable]
+  // https://html.spec.whatwg.org/multipage/structured-data.html#transfer-steps
+  MOZ_CAN_RUN_SCRIPT bool Transfer(JSContext* aCx,
+                                   UniqueMessagePortId& aPortId);
+  // https://html.spec.whatwg.org/multipage/structured-data.html#transfer-receiving-steps
+  static MOZ_CAN_RUN_SCRIPT bool ReceiveTransfer(
+      JSContext* aCx, nsIGlobalObject* aGlobal, MessagePort& aPort,
+      JS::MutableHandle<JSObject*> aReturnObject);
+
  public:
   nsIGlobalObject* GetParentObject() const { return mGlobal; }
 

dom/streams/ReadableStreamDefaultController.cpp

@@ -12,7 +12,6 @@
 #include "mozilla/HoldDropJSObjects.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/Promise-inl.h"
-#include "mozilla/dom/PromiseNativeHandler.h"
 #include "mozilla/dom/ReadableStream.h"
 #include "mozilla/dom/ReadableStreamController.h"
 #include "mozilla/dom/ReadableStreamDefaultController.h"
@@ -503,7 +502,8 @@ void SetUpReadableStreamDefaultController(
   }
 
   // Step 10.
-  RefPtr<Promise> startPromise = Promise::Create(GetIncumbentGlobal(), aRv);
+  RefPtr<Promise> startPromise =
+      Promise::Create(aStream->GetParentObject(), aRv);
   if (aRv.Failed()) {
     return;
   }

dom/streams/ReadableStreamTee.cpp

@@ -8,7 +8,6 @@
 #include "js/TypeDecls.h"
 #include "js/experimental/TypedData.h"
 #include "mozilla/dom/ByteStreamHelpers.h"
-#include "mozilla/dom/PromiseNativeHandler.h"
 #include "mozilla/dom/Promise-inl.h"
 #include "mozilla/dom/ReadIntoRequest.h"
 #include "mozilla/dom/ReadableStream.h"

dom/streams/TransformStream.cpp

@@ -12,7 +12,6 @@
 #include "mozilla/Attributes.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/Promise-inl.h"
-#include "mozilla/dom/PromiseNativeHandler.h"
 #include "mozilla/dom/WritableStream.h"
 #include "mozilla/dom/ReadableStream.h"
 #include "mozilla/dom/RootedDictionary.h"
@@ -45,6 +44,13 @@ TransformStream::TransformStream(nsIGlobalObject* aGlobal) : mGlobal(aGlobal) {
   mozilla::HoldJSObjects(this);
 }
 
+TransformStream::TransformStream(nsIGlobalObject* aGlobal,
+                                 ReadableStream* aReadable,
+                                 WritableStream* aWritable)
+    : mGlobal(aGlobal), mReadable(aReadable), mWritable(aWritable) {
+  mozilla::HoldJSObjects(this);
+}
+
 TransformStream::~TransformStream() { mozilla::DropJSObjects(this); }
 
 JSObject* TransformStream::WrapObject(JSContext* aCx,

dom/streams/TransformStream.h

@@ -19,12 +19,17 @@ namespace mozilla::dom {
 
 class WritableStream;
 class ReadableStream;
+class UniqueMessagePortId;
+class MessagePort;
 
 class TransformStream final : public nsISupports, public nsWrapperCache {
  public:
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TransformStream)
 
+  TransformStream(nsIGlobalObject* aGlobal, ReadableStream* aReadable,
+                  WritableStream* aWritable);
+
   // Internal slot accessors
   bool Backpressure() const { return mBackpressure; }
   void SetBackpressure(bool aBackpressure) { mBackpressure = aBackpressure; }
@@ -42,6 +47,16 @@ class TransformStream final : public nsISupports, public nsWrapperCache {
   MOZ_KNOWN_LIVE ReadableStream* Readable() { return mReadable; }
   MOZ_KNOWN_LIVE WritableStream* Writable() { return mWritable; }
 
+  // [Transferable]
+  // https://html.spec.whatwg.org/multipage/structured-data.html#transfer-steps
+  MOZ_CAN_RUN_SCRIPT bool Transfer(JSContext* aCx,
+                                   UniqueMessagePortId& aPortId1,
+                                   UniqueMessagePortId& aPortId2);
+  // https://html.spec.whatwg.org/multipage/structured-data.html#transfer-receiving-steps
+  static MOZ_CAN_RUN_SCRIPT bool ReceiveTransfer(
+      JSContext* aCx, nsIGlobalObject* aGlobal, MessagePort& aPort1,
+      MessagePort& aPort2, JS::MutableHandle<JSObject*> aReturnObject);
+
  protected:
   ~TransformStream();
   explicit TransformStream(nsIGlobalObject* aGlobal);

dom/streams/WritableStream.h

@@ -25,6 +25,8 @@ class Promise;
 class WritableStreamDefaultController;
 class WritableStreamDefaultWriter;
 class UnderlyingSinkAlgorithmsBase;
+class UniqueMessagePortId;
+class MessagePort;
 
 class WritableStream : public nsISupports, public nsWrapperCache {
  public:
@@ -41,7 +43,6 @@ class WritableStream : public nsISupports, public nsWrapperCache {
   enum class WriterState { Writable, Closed, Erroring, Errored };
 
   // Slot Getter/Setters:
- public:
   bool Backpressure() const { return mBackpressure; }
   void SetBackpressure(bool aBackpressure) { mBackpressure = aBackpressure; }
 
@@ -133,7 +134,15 @@ class WritableStream : public nsISupports, public nsWrapperCache {
   // WritableStreamUpdateBackpressure
   void UpdateBackpressure(bool aBackpressure, ErrorResult& aRv);
 
- public:
+  // [Transferable]
+  // https://html.spec.whatwg.org/multipage/structured-data.html#transfer-steps
+  MOZ_CAN_RUN_SCRIPT bool Transfer(JSContext* aCx,
+                                   UniqueMessagePortId& aPortId);
+  // https://html.spec.whatwg.org/multipage/structured-data.html#transfer-receiving-steps
+  static MOZ_CAN_RUN_SCRIPT bool ReceiveTransfer(
+      JSContext* aCx, nsIGlobalObject* aGlobal, MessagePort& aPort,
+      JS::MutableHandle<JSObject*> aReturnObject);
+
   nsIGlobalObject* GetParentObject() const { return mGlobal; }
 
   JSObject* WrapObject(JSContext* aCx,

dom/streams/WritableStreamDefaultController.cpp

@@ -12,11 +12,9 @@
 #include "mozilla/dom/AbortSignal.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/Promise-inl.h"
-#include "mozilla/dom/PromiseNativeHandler.h"
 #include "mozilla/dom/WritableStream.h"
 #include "mozilla/dom/WritableStreamDefaultController.h"
 #include "mozilla/dom/WritableStreamDefaultControllerBinding.h"
-// #include "mozilla/dom/ReadableStreamDefaultReaderBinding.h"
 #include "mozilla/dom/UnderlyingSinkBinding.h"
 #include "nsCycleCollectionParticipant.h"
 #include "nsDebug.h"
@@ -185,7 +183,8 @@ void SetUpWritableStreamDefaultController(
   }
 
   // Step 16. Let startPromise be a promise resolved with startResult.
-  RefPtr<Promise> startPromise = Promise::Create(GetIncumbentGlobal(), aRv);
+  RefPtr<Promise> startPromise =
+      Promise::Create(aStream->GetParentObject(), aRv);
   if (aRv.Failed()) {
     return;
   }

dom/streams/moz.build

@@ -50,6 +50,7 @@ UNIFIED_SOURCES += [
     "ReadableStreamTee.cpp",
     "StreamUtils.cpp",
     "TeeState.cpp",
+    "Transferable.cpp",
     "TransformerCallbackHelpers.cpp",
     "TransformStream.cpp",
     "TransformStreamDefaultController.cpp",
@@ -60,10 +61,13 @@ UNIFIED_SOURCES += [
     "WritableStreamDefaultWriter.cpp",
 ]
 
+include("/ipc/chromium/chromium-config.mozbuild")  # to import MessagePort.h
+
 FINAL_LIBRARY = "xul"
 
 LOCAL_INCLUDES += [
     "/dom/base",
+    "/dom/ipc",
 ]
 
 # MOCHITEST_MANIFESTS += ["tests/mochitest.ini"]

dom/webidl/ReadableStream.webidl

@@ -1,5 +1,5 @@
 [Exposed=*,
-//Transferable See Bug 1734240
+//Transferable See Bug 1562065
 ]
 interface ReadableStream {
   [Throws]

netwerk/protocol/websocket/WebSocketChannelChild.h

@@ -18,6 +18,7 @@ namespace net {
 
 class ChannelEvent;
 class ChannelEventQueue;
+class MessageEvent;
 
 class WebSocketChannelChild final : public BaseWebSocketChannel,
                                     public PWebSocketChild,

testing/web-platform/meta/html/infrastructure/safe-passing-of-structured-data/messagechannel.any.js.ini

@@ -1,18 +0,0 @@
-[messagechannel.any.sharedworker.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED
-
-
-[messagechannel.any.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED
-
-
-[messagechannel.any.worker.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED
-
-
-[messagechannel.any.serviceworker.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED

testing/web-platform/meta/html/infrastructure/safe-passing-of-structured-data/window-postmessage.window.js.ini

@@ -1,3 +0,0 @@
-[window-postmessage.window.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED

testing/web-platform/meta/html/webappapis/structured-clone/structured-clone.any.js.ini

@@ -1,8 +0,0 @@
-[structured-clone.any.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED
-
-
-[structured-clone.any.worker.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED

testing/web-platform/meta/streams/transferable/deserialize-error.window.js.ini

@@ -1,8 +0,0 @@
-[deserialize-error.window.html]
-  expected: ERROR
-  [a ReadableStream deserialization failure should result in a DataCloneError]
-    expected: TIMEOUT
-
-  [a WritableStream deserialization failure should result in a DataCloneError]
-    expected: TIMEOUT
-

testing/web-platform/meta/streams/transferable/readable-stream.html.ini

@@ -1,49 +1,3 @@
 [readable-stream.html]
-  [sending ten chunks on demand should work]
-    expected: FAIL
-
-  [race between cancel() and enqueue() should be benign]
-    expected: FAIL
-
-  [transferring a non-serializable chunk should error both sides]
-    expected: FAIL
-
-  [stream cancel should not wait for underlying source cancel]
-    expected: FAIL
-
-  [cancel should abort a pending read()]
-    expected: FAIL
-
-  [race between cancel() and error() should leave sides in different states]
-    expected: FAIL
-
   [cancel should be propagated to the original]
     expected: FAIL
-
-  [race between cancel() and close() should be benign]
-    expected: FAIL
-
-  [errors should be passed through]
-    expected: FAIL
-
-  [the extra queue from transferring is counted in chunks]
-    expected: FAIL
-
-  [sending one chunk through a transferred stream should work]
-    expected: FAIL
-
-  [transferring a stream should relieve backpressure]
-    expected: FAIL
-
-  [sending ten chunks through a transferred stream should work]
-    expected: FAIL
-
-  [serialization should not happen until the value is read]
-    expected: FAIL
-
-  [sending ten chunks one at a time should work]
-    expected: FAIL
-
-  [transferring a stream should add one chunk to the queue size]
-    expected: FAIL
-

testing/web-platform/meta/streams/transferable/reason.html.ini

@@ -2,45 +2,18 @@
   [a TypeError message should not be preserved if it is inherited]
     expected: FAIL
 
-  [DOMException errors should be preserved]
-    expected: FAIL
-
-  [reason with a simple value of '3' should be preserved]
-    expected: FAIL
-
   [URIError should be preserved]
     expected: FAIL
 
-  [reason with a simple value of 'null' should be preserved]
-    expected: FAIL
-
-  [reason with a simple value of '7' should be preserved]
-    expected: FAIL
-
   [a TypeError message should be converted to a string]
     expected: FAIL
 
-  [objects that can be completely expressed in JSON should be preserved]
-    expected: FAIL
-
-  [reason with a simple value of 'true' should be preserved]
-    expected: FAIL
-
   [TypeError should be preserved]
     expected: FAIL
 
-  [reason with a simple value of 'undefined' should be preserved]
-    expected: FAIL
-
   [RangeError should be preserved]
     expected: FAIL
 
-  [reason with a simple value of 'NaN' should be preserved]
-    expected: FAIL
-
-  [objects that cannot be expressed in JSON should also be preserved]
-    expected: FAIL
-
   [other attributes of a TypeError should not be preserved]
     expected: FAIL
 
@@ -50,24 +23,11 @@
   [SyntaxError should be preserved]
     expected: FAIL
 
-  [reason with a simple value of 'Infinity' should be preserved]
-    expected: FAIL
-
   [EvalError should be preserved]
     expected: FAIL
 
-  [reason with a simple value of '\t\r\n' should be preserved]
-    expected: FAIL
-
   [the type and message of a TypeError should be preserved]
     expected: FAIL
 
-  [reason with a simple value of 'hi' should be preserved]
-    expected: FAIL
-
-  [reason with a simple value of 'false' should be preserved]
-    expected: FAIL
-
   [a TypeError message should not be preserved if it is a getter]
     expected: FAIL
-

testing/web-platform/meta/streams/transferable/service-worker.https.html.ini

@@ -1,8 +0,0 @@
-[service-worker.https.html]
-  expected:
-    if (os == "android") and debug and not swgl: [OK, ERROR]
-  [serviceWorker.controller.postMessage should be able to transfer a ReadableStream]
-    expected: FAIL
-
-  [postMessage in a service worker should be able to transfer ReadableStream]
-    expected: FAIL

testing/web-platform/meta/streams/transferable/shared-worker.html.ini

@@ -1,7 +0,0 @@
-[shared-worker.html]
-  [postMessage in a worker should be able to transfer a ReadableStream]
-    expected: FAIL
-
-  [worker.postMessage should be able to transfer a ReadableStream]
-    expected: FAIL
-

testing/web-platform/meta/streams/transferable/transform-stream.html.ini

@@ -1,6 +0,0 @@
-[transform-stream.html]
-  [piping through transferred transforms should work]
-    expected: FAIL
-
-  [window.postMessage should be able to transfer a TransformStream]
-    expected: FAIL

testing/web-platform/meta/streams/transferable/window.html.ini

@@ -1,12 +0,0 @@
-[window.html]
-  [transfer to and from an iframe should work]
-    expected: FAIL
-
-  [the same ReadableStream posted multiple times should arrive together]
-    expected: FAIL
-
-  [port.postMessage should be able to transfer a ReadableStream]
-    expected: FAIL
-
-  [window.postMessage should be able to transfer a ReadableStream]
-    expected: FAIL

testing/web-platform/meta/streams/transferable/worker.html.ini

@@ -1,11 +0,0 @@
-[worker.html]
-  expected:
-    if (os == "win") and not debug and (processor == "x86_64"): [OK, ERROR]
-  [terminating a worker should not error the stream]
-    expected: FAIL
-
-  [postMessage in a worker should be able to transfer a ReadableStream]
-    expected: FAIL
-
-  [worker.postMessage should be able to transfer a ReadableStream]
-    expected: FAIL

testing/web-platform/meta/streams/transferable/writable-stream.html.ini

@@ -1,22 +1,6 @@
 [writable-stream.html]
-  [window.postMessage should be able to transfer a WritableStream]
-    expected: FAIL
-
-  [second write should wait for first underlying write to complete]
-    expected: FAIL
-
   [abort() should work]
     expected: FAIL
 
-  [window.postMessage should be able to transfer a {readable, writable} pair]
-    expected: FAIL
-
   [writing a unclonable object should error the stream]
     expected: FAIL
-
-  [effective queue size of a transferred writable should be 2]
-    expected: FAIL
-
-  [desiredSize for a newly-transferred stream should be 1]
-    expected: FAIL
-

testing/web-platform/meta/workers/semantics/structured-clone/dedicated.html.ini

@@ -1,3 +0,0 @@
-[dedicated.html]
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED

testing/web-platform/meta/workers/semantics/structured-clone/shared.html.ini

@@ -1,5 +0,0 @@
-[shared.html]
-  disabled:
-    if os == "win": Bug 1661351
-  [A subclass instance will be received as its closest transferable superclass]
-    expected: PRECONDITION_FAILED

testing/web-platform/tests/streams/transferable/transfer-with-messageport.window.js

@@ -0,0 +1,219 @@
+"use strict";
+
+function receiveEventOnce(target, name) {
+  return new Promise(resolve => {
+    target.addEventListener(
+      name,
+      ev => {
+        resolve(ev);
+      },
+      { once: true }
+    );
+  });
+}
+
+async function postAndTestMessageEvent(data, transfer, title) {
+  postMessage(data, "*", transfer);
+  const messagePortCount = transfer.filter(i => i instanceof MessagePort)
+    .length;
+  const ev = await receiveEventOnce(window, "message");
+  assert_equals(
+    ev.ports.length,
+    messagePortCount,
+    `Correct number of ports ${title}`
+  );
+  for (const [i, port] of ev.ports.entries()) {
+    assert_true(
+      port instanceof MessagePort,
+      `ports[${i}] include MessagePort ${title}`
+    );
+  }
+  for (const [key, value] of Object.entries(data)) {
+    assert_true(
+      ev.data[key] instanceof value.constructor,
+      `data.${key} has correct interface ${value.constructor.name} ${title}`
+    );
+  }
+}
+
+async function transferMessagePortWithOrder1(stream) {
+  const channel = new MessageChannel();
+  await postAndTestMessageEvent(
+    { stream, port2: channel.port2 },
+    [stream, channel.port2],
+    `when transferring [${stream.constructor.name}, MessagePort]`
+  );
+}
+
+async function transferMessagePortWithOrder2(stream) {
+  const channel = new MessageChannel();
+  await postAndTestMessageEvent(
+    { stream, port2: channel.port2 },
+    [channel.port2, stream],
+    `when transferring [MessagePort, ${stream.constructor.name}]`
+  );
+}
+
+async function transferMessagePortWithOrder3(stream) {
+  const channel = new MessageChannel();
+  await postAndTestMessageEvent(
+    { port1: channel.port1, stream, port2: channel.port2 },
+    [channel.port1, stream, channel.port2],
+    `when transferring [MessagePort, ${stream.constructor.name}, MessagePort]`
+  );
+}
+
+async function transferMessagePortWithOrder4(stream) {
+  const channel = new MessageChannel();
+  await postAndTestMessageEvent(
+    {},
+    [channel.port1, stream, channel.port2],
+    `when transferring [MessagePort, ${stream.constructor.name}, MessagePort] but with empty data`
+  );
+}
+
+async function transferMessagePortWithOrder5(stream) {
+  const channel = new MessageChannel();
+  await postAndTestMessageEvent(
+    { port2: channel.port2, port1: channel.port1, stream },
+    [channel.port1, stream, channel.port2],
+    `when transferring [MessagePort, ${stream.constructor.name}, MessagePort] but with data having different order`
+  );
+}
+
+async function transferMessagePortWithOrder6(stream) {
+  const channel = new MessageChannel();
+  await postAndTestMessageEvent(
+    { port2: channel.port2, port1: channel.port1 },
+    [channel.port1, stream, channel.port2],
+    `when transferring [MessagePort, ${stream.constructor.name}, MessagePort] but with stream not being in the data`
+  );
+}
+
+async function transferMessagePortWithOrder7(stream) {
+  const channel = new MessageChannel();
+  await postAndTestMessageEvent(
+    { stream },
+    [channel.port1, stream, channel.port2],
+    `when transferring [MessagePort, ${stream.constructor.name}, MessagePort] but with ports not being in the data`
+  );
+}
+
+async function transferMessagePortWith(constructor) {
+  await transferMessagePortWithOrder1(new constructor());
+  await transferMessagePortWithOrder2(new constructor());
+  await transferMessagePortWithOrder3(new constructor());
+}
+
+async function advancedTransferMesagePortWith(constructor) {
+  await transferMessagePortWithOrder4(new constructor());
+  await transferMessagePortWithOrder5(new constructor());
+  await transferMessagePortWithOrder6(new constructor());
+  await transferMessagePortWithOrder7(new constructor());
+}
+
+async function mixedTransferMessagePortWithOrder1() {
+  const channel = new MessageChannel();
+  const readable = new ReadableStream();
+  const writable = new WritableStream();
+  const transform = new TransformStream();
+  await postAndTestMessageEvent(
+    {
+      readable,
+      writable,
+      transform,
+      port1: channel.port1,
+      port2: channel.port2,
+    },
+    [readable, writable, transform, channel.port1, channel.port2],
+    `when transferring [ReadableStream, WritableStream, TransformStream, MessagePort, MessagePort]`
+  );
+}
+
+async function mixedTransferMessagePortWithOrder2() {
+  const channel = new MessageChannel();
+  const readable = new ReadableStream();
+  const writable = new WritableStream();
+  const transform = new TransformStream();
+  await postAndTestMessageEvent(
+    { readable, writable, transform },
+    [transform, channel.port1, readable, channel.port2, writable],
+    `when transferring [TransformStream, MessagePort, ReadableStream, MessagePort, WritableStream]`
+  );
+}
+
+async function mixedTransferMessagePortWithOrder3() {
+  const channel = new MessageChannel();
+  const readable1 = new ReadableStream();
+  const readable2 = new ReadableStream();
+  const writable1 = new WritableStream();
+  const writable2 = new WritableStream();
+  const transform1 = new TransformStream();
+  const transform2 = new TransformStream();
+  await postAndTestMessageEvent(
+    { readable1, writable1, transform1, readable2, writable2, transform2 },
+    [
+      transform2,
+      channel.port1,
+      readable1,
+      channel.port2,
+      writable2,
+      readable2,
+      writable1,
+      transform1,
+    ],
+    `when transferring [TransformStream, MessagePort, ReadableStream, MessagePort, WritableStream, ReadableStream, WritableStream, TransformStream] but with the data having different order`
+  );
+}
+
+async function mixedTransferMesagePortWith() {
+  await mixedTransferMessagePortWithOrder1();
+  await mixedTransferMessagePortWithOrder2();
+  await mixedTransferMessagePortWithOrder3();
+}
+
+promise_test(async t => {
+  await transferMessagePortWith(ReadableStream);
+}, "Transferring a MessagePort with a ReadableStream should set `.ports`");
+
+promise_test(async t => {
+  await transferMessagePortWith(WritableStream);
+}, "Transferring a MessagePort with a WritableStream should set `.ports`");
+
+promise_test(async t => {
+  await transferMessagePortWith(TransformStream);
+}, "Transferring a MessagePort with a TransformStream should set `.ports`");
+
+promise_test(async t => {
+  await transferMessagePortWith(ReadableStream);
+}, "Transferring a MessagePort with a ReadableStream should set `.ports`, advanced");
+
+promise_test(async t => {
+  await transferMessagePortWith(WritableStream);
+}, "Transferring a MessagePort with a WritableStream should set `.ports`, advanced");
+
+promise_test(async t => {
+  await transferMessagePortWith(TransformStream);
+}, "Transferring a MessagePort with a TransformStream should set `.ports`, advanced");
+
+promise_test(async t => {
+  await mixedTransferMesagePortWith();
+}, "Transferring a MessagePort with multiple streams should set `.ports`");
+
+test(() => {
+  assert_throws_dom("DataCloneError", () =>
+    postMessage({ stream: new ReadableStream() }, "*")
+  );
+}, "ReadableStream must not be serializable");
+
+test(() => {
+  assert_throws_dom("DataCloneError", () =>
+    postMessage({ stream: new WritableStream() }, "*")
+  );
+}, "WritableStream must not be serializable");
+
+test(() => {
+  assert_throws_dom("DataCloneError", () =>
+    postMessage({ stream: new TransformStream() }, "*")
+  );
+}, "TransformStream must not be serializable");