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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ICNET_RAAQM_TRANSPORT_PROTOCOL_H_
#define ICNET_RAAQM_TRANSPORT_PROTOCOL_H_
#include "icnet_transport_vegas.h"
#include "icnet_transport_vegas_rto_estimator.h"
#include "icnet_transport_raaqm_data_path.h"
#include "icnet_transport_rate_estimation.h"
namespace icnet {
namespace transport {
class RaaqmTransportProtocol : public VegasTransportProtocol {
public:
RaaqmTransportProtocol(Socket *icnet_socket);
~RaaqmTransportProtocol();
void start();
protected:
void copyContent(ContentObject &content_object);
private:
void init();
void reset();
void afterContentReception(const Interest &interest, const ContentObject &content_object);
void afterDataUnsatisfied(uint64_t segment);
void increaseWindow();
void updateRtt(uint64_t segment);
void decreaseWindow();
void changeInterestLifetime(uint64_t segment);
void onTimeout(const Interest &interest);
void RAAQM();
void updatePathTable(const ContentObject &content_object);
void checkForFastRetransmission(const Interest &interest);
void check_drop_probability();
void check_for_stale_paths();
void printRtt();
/**
* Current download path
*/
std::shared_ptr<RaaqmDataPath> cur_path_;
/**
* Hash table for path: each entry is a pair path ID(key) - path object
*/
std::unordered_map<unsigned char, std::shared_ptr<RaaqmDataPath>> path_table_;
bool set_interest_filter_;
//for rate-estimation at packet level
IcnRateEstimator *rate_estimator_;
//params for autotuning
bool raaqm_autotune_;
double default_beta_;
double default_drop_;
double beta_wifi_;
double drop_wifi_;
double beta_lte_;
double drop_lte_;
unsigned int wifi_delay_;
unsigned int lte_delay_;
//RTT stats
double avg_rtt_;
};
} // end namespace transport
} // end namespace icnet
#endif // ICNET_RAAQM_TRANSPORT_PROTOCOL_H_
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