Project import generated by Copybara.
PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/core/session_notifier_interface.h b/quic/core/session_notifier_interface.h
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+// Copyright (c) 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef QUICHE_QUIC_CORE_SESSION_NOTIFIER_INTERFACE_H_
+#define QUICHE_QUIC_CORE_SESSION_NOTIFIER_INTERFACE_H_
+
+#include "net/third_party/quiche/src/quic/core/frames/quic_frame.h"
+#include "net/third_party/quiche/src/quic/core/quic_time.h"
+
+namespace quic {
+
+// Pure virtual class to be notified when a packet containing a frame is acked
+// or lost.
+class QUIC_EXPORT_PRIVATE SessionNotifierInterface {
+ public:
+ virtual ~SessionNotifierInterface() {}
+
+ // Called when |frame| is acked. Returns true if any new data gets acked,
+ // returns false otherwise.
+ virtual bool OnFrameAcked(const QuicFrame& frame,
+ QuicTime::Delta ack_delay_time) = 0;
+
+ // Called when |frame| is retransmitted.
+ virtual void OnStreamFrameRetransmitted(const QuicStreamFrame& frame) = 0;
+
+ // Called when |frame| is considered as lost.
+ virtual void OnFrameLost(const QuicFrame& frame) = 0;
+
+ // Called to retransmit |frames| with transmission |type|.
+ virtual void RetransmitFrames(const QuicFrames& frames,
+ TransmissionType type) = 0;
+
+ // Returns true if |frame| is outstanding and waiting to be acked.
+ virtual bool IsFrameOutstanding(const QuicFrame& frame) const = 0;
+
+ // Returns true if crypto stream is waiting for acks.
+ virtual bool HasUnackedCryptoData() const = 0;
+};
+
+} // namespace quic
+
+#endif // QUICHE_QUIC_CORE_SESSION_NOTIFIER_INTERFACE_H_
