| // 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 "quiche/quic/core/frames/quic_frame.h" |
| #include "quiche/quic/core/quic_time.h" |
| |
| namespace quic { |
| |
| // Pure virtual class to be notified when a packet containing a frame is acked |
| // or lost. |
| class QUICHE_EXPORT 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, |
| QuicTime receive_timestamp) = 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|. Returns true if all |
| // data gets retransmitted. |
| virtual bool 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; |
| |
| // Returns true if any stream is waiting for acks. |
| virtual bool HasUnackedStreamData() const = 0; |
| }; |
| |
| } // namespace quic |
| |
| #endif // QUICHE_QUIC_CORE_SESSION_NOTIFIER_INTERFACE_H_ |