1 files changed, 30 insertions, 4 deletions
diff --git a/dom/fetch/Request.cpp b/dom/fetch/Request.cpp
index 6a7885b1a..ba268d331 100644
--- a/dom/fetch/Request.cpp
+++ b/dom/fetch/Request.cpp
@@ -37,15 +37,18 @@ NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Request)
   NS_INTERFACE_MAP_ENTRY(nsISupports)
 NS_INTERFACE_MAP_END
 
-Request::Request(nsIGlobalObject* aOwner, InternalRequest* aRequest)
+Request::Request(nsIGlobalObject* aOwner, InternalRequest* aRequest, AbortSignal* aSignal)
   : FetchBody<Request>()
   , mOwner(aOwner)
   , mRequest(aRequest)
+  , mSignal(aSignal)
 {
   MOZ_ASSERT(aRequest->Headers()->Guard() == HeadersGuardEnum::Immutable ||
              aRequest->Headers()->Guard() == HeadersGuardEnum::Request ||
              aRequest->Headers()->Guard() == HeadersGuardEnum::Request_no_cors);
   SetMimeType();
+  
+  // aSignal can be null.
 }
 
 Request::~Request()
@@ -286,6 +289,8 @@ Request::Constructor(const GlobalObject& aGlobal,
   RefPtr<InternalRequest> request;
 
   nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
+  
+  RefPtr<AbortSignal> signal;
 
   if (aInput.IsRequest()) {
     RefPtr<Request> inputReq = &aInput.GetAsRequest();
@@ -300,6 +305,7 @@ Request::Constructor(const GlobalObject& aGlobal,
     }
 
     request = inputReq->GetInternalRequest();
+    signal = inputReq->GetOrCreateSignal();
   } else {
     // aInput is USVString.
     // We need to get url before we create a InternalRequest.
@@ -418,6 +424,10 @@ Request::Constructor(const GlobalObject& aGlobal,
     request->SetReferrerPolicy(aInit.mReferrerPolicy.Value());
   }
 
+  if (aInit.mSignal.WasPassed()) {
+    signal = &aInit.mSignal.Value();
+  }
+
   if (NS_IsMainThread()) {
     nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(global);
     if (window) {
@@ -579,7 +589,7 @@ Request::Constructor(const GlobalObject& aGlobal,
     }
   }
 
-  RefPtr<Request> domRequest = new Request(global, request);
+  RefPtr<Request> domRequest = new Request(global, request, signal);
   domRequest->SetMimeType();
 
   if (aInput.IsRequest()) {
@@ -595,7 +605,7 @@ Request::Constructor(const GlobalObject& aGlobal,
 }
 
 already_AddRefed<Request>
-Request::Clone(ErrorResult& aRv) const
+Request::Clone(ErrorResult& aRv)
 {
   if (BodyUsed()) {
     aRv.ThrowTypeError<MSG_FETCH_BODY_CONSUMED_ERROR>();
@@ -608,7 +618,7 @@ Request::Clone(ErrorResult& aRv) const
     return nullptr;
   }
 
-  RefPtr<Request> request = new Request(mOwner, ir);
+  RefPtr<Request> request = new Request(mOwner, ir, GetOrCreateSignal());
   return request.forget();
 }
 
@@ -622,5 +632,21 @@ Request::Headers_()
   return mHeaders;
 }
 
+AbortSignal*
+Request::GetOrCreateSignal()
+{
+  if (!mSignal) {
+    mSignal = new AbortSignal(false);
+  }
+
+  return mSignal;
+}
+
+AbortSignal*
+Request::GetSignal() const
+{
+  return mSignal;
+}
+
 } // namespace dom
 } // namespace mozilla