1 files changed, 68 insertions, 0 deletions
diff --git a/netwerk/protocol/res/RemoteStreamGetter.h b/netwerk/protocol/res/RemoteStreamGetter.h
new file mode 100644
index 0000000000..de2bd6b601
--- /dev/null
+++ b/netwerk/protocol/res/RemoteStreamGetter.h
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef RemoteStreamGetter_h___
+#define RemoteStreamGetter_h___
+
+#include "nsIChannel.h"
+#include "nsIInputStreamPump.h"
+#include "nsIStreamListener.h"
+#include "nsIInputStream.h"
+#include "nsICancelable.h"
+#include "SimpleChannel.h"
+#include "mozilla/net/NeckoChannelParams.h"
+#include "mozilla/net/NeckoChild.h"
+#include "mozilla/Maybe.h"
+
+class nsILoadInfo;
+
+namespace mozilla {
+namespace net {
+
+using RemoteStreamPromise =
+    mozilla::MozPromise<RemoteStreamInfo, nsresult, false>;
+using Method = RefPtr<
+    MozPromise<Maybe<RemoteStreamInfo>, ipc::ResponseRejectReason, true>> (
+    PNeckoChild::*)(nsIURI*, const LoadInfoArgs&);
+
+/**
+ * Helper class used with SimpleChannel to asynchronously obtain an input
+ * stream and metadata from the parent for a remote protocol load from the
+ * child.
+ */
+class RemoteStreamGetter final : public nsICancelable {
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSICANCELABLE
+
+ public:
+  RemoteStreamGetter(nsIURI* aURI, nsILoadInfo* aLoadInfo);
+
+  // Get an input stream from the parent asynchronously.
+  RequestOrReason GetAsync(nsIStreamListener* aListener, nsIChannel* aChannel,
+                           Method aMethod);
+
+  // Handle an input stream being returned from the parent
+  void OnStream(const Maybe<RemoteStreamInfo>& aStreamInfo);
+
+  static void CancelRequest(nsIStreamListener* aListener, nsIChannel* aChannel,
+                            nsresult aResult);
+
+ private:
+  ~RemoteStreamGetter() = default;
+
+  nsCOMPtr<nsIURI> mURI;
+  nsCOMPtr<nsILoadInfo> mLoadInfo;
+  nsCOMPtr<nsIStreamListener> mListener;
+  nsCOMPtr<nsIChannel> mChannel;
+  nsCOMPtr<nsIInputStreamPump> mPump;
+  bool mCanceled{false};
+  nsresult mStatus{NS_OK};
+};
+
+}  // namespace net
+}  // namespace mozilla
+
+#endif /* RemoteStreamGetter_h___ */