| // Copyright 2015 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 BLIMP_NET_BLIMP_MESSAGE_CHECKPOINT_OBSERVER_H_ |
| #define BLIMP_NET_BLIMP_MESSAGE_CHECKPOINT_OBSERVER_H_ |
| |
| #include <stdint.h> |
| |
| namespace blimp { |
| |
| // Allows objects to subscribe to message acknowledgment checkpoints. |
| class BlimpMessageCheckpointObserver { |
| public: |
| virtual ~BlimpMessageCheckpointObserver() {} |
| |
| // Invoked when the remote end has positively acknowledged the receipt of all |
| // messages with ID <= |message_id|. |
| virtual void OnMessageCheckpoint(int64_t message_id) = 0; |
| }; |
| |
| } // namespace blimp |
| |
| #endif // BLIMP_NET_BLIMP_MESSAGE_CHECKPOINT_OBSERVER_H_ |