172 lines
6.5 KiB
C++
172 lines
6.5 KiB
C++
/// @file
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/// @author rfree (current maintainer in monero.cc project)
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/// @brief interface for throttling of connection (count and rate-limit speed etc)
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// Copyright (c) 2014-2017, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/* rfree: throttle basic interface */
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/* rfree: also includes the manager for singeton/global such objects */
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#ifndef INCLUDED_network_throttle_hpp
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#define INCLUDED_network_throttle_hpp
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#include <boost/asio.hpp>
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#include <string>
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#include <vector>
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#include <boost/noncopyable.hpp>
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#include <boost/shared_ptr.hpp>
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#include <atomic>
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#include <boost/asio.hpp>
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#include <boost/array.hpp>
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#include <boost/noncopyable.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/enable_shared_from_this.hpp>
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#include <boost/interprocess/detail/atomic.hpp>
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#include <boost/thread/thread.hpp>
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#include "syncobj.h"
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#include "net/net_utils_base.h"
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#include "misc_log_ex.h"
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#include <boost/lambda/bind.hpp>
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#include <boost/lambda/lambda.hpp>
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#include <boost/uuid/random_generator.hpp>
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#include <boost/chrono.hpp>
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#include <boost/utility/value_init.hpp>
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#include <boost/asio/deadline_timer.hpp>
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#include <boost/date_time/posix_time/posix_time.hpp>
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#include <boost/thread/thread.hpp>
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#include "misc_language.h"
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#include "pragma_comp_defs.h"
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#include <sstream>
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#include <iomanip>
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#include <algorithm>
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#include <memory>
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#include <mutex>
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#include <fstream>
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namespace epee
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{
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namespace net_utils
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{
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// just typedefs to in code define the units used. TODO later it will be enforced that casts to other numericals are only explicit to avoid mistakes? use boost::chrono?
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typedef double network_speed_kbps; // externally, for parameters and return values, all defined in kilobytes per second
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typedef double network_speed_bps; // throttle-internally, bytes per second
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typedef double network_time_seconds;
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typedef double network_MB;
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class i_network_throttle;
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/***
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@brief All information about given throttle - speed calculations
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*/
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struct calculate_times_struct {
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double average;
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double window;
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double delay;
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double recomendetDataSize;
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};
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typedef calculate_times_struct calculate_times_struct;
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/***
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@brief Access to simple throttles, with singlton to access global network limits
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*/
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class network_throttle_manager {
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// provides global (singleton) in/inreq/out throttle access
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// [[note1]] see also http://www.nuonsoft.com/blog/2012/10/21/implementing-a-thread-safe-singleton-with-c11/
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// [[note2]] _inreq is the requested in traffic - we anticipate we will get in-bound traffic soon as result of what we do (e.g. that we sent network downloads requests)
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//protected:
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public: // XXX
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static boost::mutex m_lock_get_global_throttle_in;
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static boost::mutex m_lock_get_global_throttle_inreq;
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static boost::mutex m_lock_get_global_throttle_out;
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friend class connection_basic; // FRIEND - to directly access global throttle-s. !! REMEMBER TO USE LOCKS!
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friend class connection_basic_pimpl; // ditto
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public:
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static i_network_throttle & get_global_throttle_in(); ///< singleton ; for friend class ; caller MUST use proper locks! like m_lock_get_global_throttle_in
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static i_network_throttle & get_global_throttle_inreq(); ///< ditto ; use lock ... use m_lock_get_global_throttle_inreq obviously
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static i_network_throttle & get_global_throttle_out(); ///< ditto ; use lock ... use m_lock_get_global_throttle_out obviously
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};
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/***
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@brief interface for the throttle, see the derivated class
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*/
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class i_network_throttle {
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public:
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virtual void set_name(const std::string &name)=0;
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virtual void set_target_speed( network_speed_kbps target )=0;
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virtual network_speed_kbps get_target_speed()=0;
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virtual void handle_trafic_exact(size_t packet_size) =0; // count the new traffic/packet; the size is exact considering all network costs
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virtual void handle_trafic_tcp(size_t packet_size) =0; // count the new traffic/packet; the size is as TCP, we will consider MTU etc
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virtual void tick() =0; // poke and update timers/history
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// time calculations:
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virtual void calculate_times(size_t packet_size, calculate_times_struct &cts, bool dbg, double force_window) const =0; // assuming sending new package (or 0), calculate:
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// Average, Window, Delay, Recommended data size ; also gets dbg=debug flag, and forced widnow size if >0 or -1 for not forcing window size
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// Average speed, Window size, recommended Delay to sleep now, Recommended size of data to send now
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virtual network_time_seconds get_sleep_time(size_t packet_size) const =0; // gets the D (recommended Delay time) from calc
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virtual network_time_seconds get_sleep_time_after_tick(size_t packet_size) =0; // ditto, but first tick the timer
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virtual size_t get_recommended_size_of_planned_transport() const =0; // what should be the recommended limit of data size that we can transport over current network_throttle in near future
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virtual double get_time_seconds() const =0; // a timer
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virtual void logger_handle_net(const std::string &filename, double time, size_t size)=0;
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};
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// ... more in the -advanced.h file
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} // namespace net_utils
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} // namespace epee
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#endif
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