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+/* 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/. */
+
+#include "nsISupports.idl"
+interface nsIHttpChannel;
+
+/**
+ * nsIHttpPushListener
+ *
+ * Used for triggering when a HTTP/2 push is received.
+ *
+ */
+[scriptable, uuid(0d6ce59c-ad5d-4520-b4d3-09664868f279)]
+interface nsIHttpPushListener : nsISupports
+{
+ /**
+ * When provided as a notificationCallback to an httpChannel, this.onPush()
+ * will be invoked when there is a >= Http2 push to that
+ * channel. The push may be in progress.
+ *
+ * The consumer must start the new channel in the usual way by calling
+ * pushChannel.AsyncOpen with a nsIStreamListener object that
+ * will receive the normal sequence of OnStartRequest(),
+ * 0 to N OnDataAvailable(), and onStopRequest().
+ *
+ * The new channel can be canceled after the AsyncOpen if it is not wanted.
+ *
+ * @param associatedChannel
+ * the monitor channel that was recieved on
+ * @param pushChannel
+ * a channel to the resource which is being pushed
+ */
+ void onPush(in nsIHttpChannel associatedChannel,
+ in nsIHttpChannel pushChannel);
+};