danicoin/src/p2p/network_throttle-detail.hpp
rfree2monero 5ce4256e3d 2014 network limit 1.1 +utils +toc -doc -drmonero
Update of the PR with network limits

works very well for all speeds
(but remember that low download speed can stop upload
because we then slow down downloading of blockchain
requests too)

more debug options

fixed pedantic warnings in our code
should work again on Mac OS X and FreeBSD
fixed warning about size_t
tested on Debian, Ubuntu, Windows(testing now)

TCP options and ToS (QoS) flag
FIXED peer number limit
FIXED some spikes in ingress/download
FIXED problems when other up and down limit
2015-02-20 22:13:00 +01:00

131 lines
6 KiB
C++

/// @file
/// @author rfree (current maintainer in monero.cc project)
/// @brief implementaion for throttling of connection (count and rate-limit speed etc)
// Copyright (c) 2014, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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//
/* rfree: throttle details, implementing rate limiting */
#ifndef INCLUDED_src_p2p_throttle_detail_hpp
#define INCLUDED_src_p2p_throttle_detail_hpp
#include "../../src/p2p/network_throttle.hpp"
namespace epee
{
namespace net_utils
{
class network_throttle : public i_network_throttle {
private:
struct packet_info {
size_t m_size; // octets sent. Summary for given small-window (e.g. for all packaged in 1 second)
packet_info();
};
network_speed_kbps m_target_speed;
network_speed_kbps m_real_target_speed;
size_t m_network_add_cost; // estimated add cost of headers
size_t m_network_minimal_segment; // estimated minimal cost of sending 1 byte to round up to
size_t m_network_max_segment; // recommended max size of 1 TCP transmission
const size_t m_window_size; // the number of samples to average over
network_time_seconds m_slot_size; // the size of one slot. TODO: now hardcoded for 1 second e.g. in time_to_slot()
// TODO for big window size, for performance better the substract on change of m_last_sample_time instead of recalculating average of eg >100 elements
std::vector< packet_info > m_history; // the history of bw usage
network_time_seconds m_last_sample_time; // time of last history[0] - so we know when to rotate the buffer
network_time_seconds m_start_time; // when we were created
bool m_any_packet_yet; // did we yet got any packet to count
double m_overheat; // last overheat
double m_overheat_time; // time in seconds after epoch
std::string m_name; // my name for debug and logs
std::string m_nameshort; // my name for debug and logs (used in log file name)
// each sample is now 1 second
public:
network_throttle(const std::string &nameshort, const std::string &name, int window_size=-1);
virtual ~network_throttle();
virtual void set_name(const std::string &name);
virtual void set_target_speed( network_speed_kbps target );
virtual void set_real_target_speed( network_speed_kbps real_target ); // only for throttle_out
virtual network_speed_kbps get_terget_speed();
// add information about events:
virtual void handle_trafic_exact(size_t packet_size); ///< count the new traffic/packet; the size is exact considering all network costs
virtual void handle_trafic_tcp(size_t packet_size); ///< count the new traffic/packet; the size is as TCP, we will consider MTU etc
virtual void tick(); ///< poke and update timers/history (recalculates, moves the history if needed, checks the real clock etc)
virtual double get_time_seconds() const ; ///< timer that we use, time in seconds, monotionic
// time calculations:
virtual void calculate_times(size_t packet_size, calculate_times_struct &cts, bool dbg, double force_window) const; ///< MAIN LOGIC (see base class for info)
virtual network_time_seconds get_sleep_time_after_tick(size_t packet_size); ///< increase the timer if needed, and get the package size
virtual network_time_seconds get_sleep_time(size_t packet_size) const; ///< gets the Delay (recommended Delay time) from calc. (not safe: only if time didnt change?) TODO
virtual size_t get_recommended_size_of_planned_transport() const; ///< what should be the size (bytes) of next data block to be transported
virtual size_t get_recommended_size_of_planned_transport_window(double force_window) const; ///< ditto, but for given windows time frame
virtual double get_current_speed() const;
private:
virtual network_time_seconds time_to_slot(network_time_seconds t) const { return std::floor( t ); } // convert exact time eg 13.7 to rounded time for slot number in history 13
virtual void _handle_trafic_exact(size_t packet_size, size_t orginal_size);
virtual void logger_handle_net(const std::string &filename, double time, size_t size);
};
/***
* The complete set of traffic throttle for one typical connection
*/
struct network_throttle_bw {
public:
network_throttle m_in; ///< for incomming traffic (this we can not controll directly as it depends of what others send to us - usually)
network_throttle m_inreq; ///< for requesting incomming traffic (this is exact usually)
network_throttle m_out; ///< for outgoing traffic that we just sent (this is exact usually)
public:
network_throttle_bw(const std::string &name1);
};
} // namespace net_utils
} // namespace epee
#endif