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293 lines
10 KiB
C++
293 lines
10 KiB
C++
/// @file
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/// @author rfree (current maintainer in monero.cc project)
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/// @brief base for connection, contains e.g. the ratelimit hooks
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// Copyright (c) 2014-2020, 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: implementation for the non-template base, can be used by connection<> template class in abstract_tcp_server2 file */
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#include "net/connection_basic.hpp"
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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/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 <iomanip>
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#include <boost/asio/basic_socket.hpp>
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// TODO:
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#include "net/network_throttle-detail.hpp"
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#if BOOST_VERSION >= 107000
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#define GET_IO_SERVICE(s) ((boost::asio::io_context&)(s).get_executor().context())
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#else
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#define GET_IO_SERVICE(s) ((s).get_io_service())
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#endif
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "net.conn"
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// ################################################################################################
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// local (TU local) headers
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// ################################################################################################
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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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namespace
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{
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boost::asio::ssl::context& get_context(connection_basic_shared_state* state)
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{
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CHECK_AND_ASSERT_THROW_MES(state != nullptr, "state shared_ptr cannot be null");
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return state->ssl_context;
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}
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}
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std::string to_string(t_connection_type type)
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{
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if (type == e_connection_type_NET)
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return std::string("NET");
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else if (type == e_connection_type_RPC)
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return std::string("RPC");
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else if (type == e_connection_type_P2P)
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return std::string("P2P");
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return std::string("UNKNOWN");
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}
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/* ============================================================================ */
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class connection_basic_pimpl {
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public:
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connection_basic_pimpl(const std::string &name);
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static int m_default_tos;
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network_throttle_bw m_throttle; // per-perr
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critical_section m_throttle_lock;
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int m_peer_number; // e.g. for debug/stats
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};
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} // namespace
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} // namespace
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// ################################################################################################
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// The implementation part
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// ################################################################################################
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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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// ================================================================================================
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// connection_basic_pimpl
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// ================================================================================================
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connection_basic_pimpl::connection_basic_pimpl(const std::string &name) : m_throttle(name), m_peer_number(0) { }
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// ================================================================================================
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// connection_basic
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// ================================================================================================
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// static variables:
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int connection_basic_pimpl::m_default_tos;
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// methods:
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connection_basic::connection_basic(boost::asio::ip::tcp::socket&& sock, std::shared_ptr<connection_basic_shared_state> state, ssl_support_t ssl_support)
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:
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m_state(std::move(state)),
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mI( new connection_basic_pimpl("peer") ),
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strand_(GET_IO_SERVICE(sock)),
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socket_(GET_IO_SERVICE(sock), get_context(m_state.get())),
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m_want_close_connection(false),
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m_was_shutdown(false),
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m_is_multithreaded(false),
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m_ssl_support(ssl_support)
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{
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// add nullptr checks if removed
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assert(m_state != nullptr); // release runtime check in get_context
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socket_.next_layer() = std::move(sock);
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++(m_state->sock_count); // increase the global counter
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mI->m_peer_number = m_state->sock_number.fetch_add(1); // use, and increase the generated number
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std::string remote_addr_str = "?";
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try { boost::system::error_code e; remote_addr_str = socket().remote_endpoint(e).address().to_string(); } catch(...){} ;
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_note("Spawned connection #"<<mI->m_peer_number<<" to " << remote_addr_str << " currently we have sockets count:" << m_state->sock_count);
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}
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connection_basic::connection_basic(boost::asio::io_service &io_service, std::shared_ptr<connection_basic_shared_state> state, ssl_support_t ssl_support)
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:
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m_state(std::move(state)),
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mI( new connection_basic_pimpl("peer") ),
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strand_(io_service),
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socket_(io_service, get_context(m_state.get())),
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m_want_close_connection(false),
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m_was_shutdown(false),
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m_is_multithreaded(false),
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m_ssl_support(ssl_support)
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{
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// add nullptr checks if removed
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assert(m_state != nullptr); // release runtime check in get_context
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++(m_state->sock_count); // increase the global counter
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mI->m_peer_number = m_state->sock_number.fetch_add(1); // use, and increase the generated number
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std::string remote_addr_str = "?";
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try { boost::system::error_code e; remote_addr_str = socket().remote_endpoint(e).address().to_string(); } catch(...){} ;
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_note("Spawned connection #"<<mI->m_peer_number<<" to " << remote_addr_str << " currently we have sockets count:" << m_state->sock_count);
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}
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connection_basic::~connection_basic() noexcept(false) {
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--(m_state->sock_count);
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std::string remote_addr_str = "?";
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try { boost::system::error_code e; remote_addr_str = socket().remote_endpoint(e).address().to_string(); } catch(...){} ;
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_note("Destructing connection #"<<mI->m_peer_number << " to " << remote_addr_str);
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}
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void connection_basic::set_rate_up_limit(uint64_t limit) {
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{
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CRITICAL_REGION_LOCAL( network_throttle_manager::m_lock_get_global_throttle_out );
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network_throttle_manager::get_global_throttle_out().set_target_speed(limit);
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}
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save_limit_to_file(limit);
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}
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void connection_basic::set_rate_down_limit(uint64_t limit) {
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{
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CRITICAL_REGION_LOCAL( network_throttle_manager::m_lock_get_global_throttle_in );
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network_throttle_manager::get_global_throttle_in().set_target_speed(limit);
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}
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{
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CRITICAL_REGION_LOCAL( network_throttle_manager::m_lock_get_global_throttle_inreq );
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network_throttle_manager::get_global_throttle_inreq().set_target_speed(limit);
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}
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save_limit_to_file(limit);
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}
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uint64_t connection_basic::get_rate_up_limit() {
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uint64_t limit;
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{
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CRITICAL_REGION_LOCAL( network_throttle_manager::m_lock_get_global_throttle_out );
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limit = network_throttle_manager::get_global_throttle_out().get_target_speed();
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}
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return limit;
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}
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uint64_t connection_basic::get_rate_down_limit() {
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uint64_t limit;
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{
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CRITICAL_REGION_LOCAL( network_throttle_manager::m_lock_get_global_throttle_in );
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limit = network_throttle_manager::get_global_throttle_in().get_target_speed();
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}
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return limit;
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}
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void connection_basic::save_limit_to_file(int limit) {
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}
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void connection_basic::set_tos_flag(int tos) {
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connection_basic_pimpl::m_default_tos = tos;
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}
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int connection_basic::get_tos_flag() {
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return connection_basic_pimpl::m_default_tos;
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}
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void connection_basic::sleep_before_packet(size_t packet_size, int phase, int q_len) {
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double delay=0; // will be calculated
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do
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{ // rate limiting
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if (m_was_shutdown) {
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_dbg2("m_was_shutdown - so abort sleep");
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return;
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}
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{
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CRITICAL_REGION_LOCAL( network_throttle_manager::m_lock_get_global_throttle_out );
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delay = network_throttle_manager::get_global_throttle_out().get_sleep_time_after_tick( packet_size );
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}
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delay *= 0.50;
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if (delay > 0) {
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long int ms = (long int)(delay * 1000);
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MTRACE("Sleeping in " << __FUNCTION__ << " for " << ms << " ms before packet_size="<<packet_size); // debug sleep
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boost::this_thread::sleep(boost::posix_time::milliseconds( ms ) );
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}
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} while(delay > 0);
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// XXX LATER XXX
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{
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CRITICAL_REGION_LOCAL( network_throttle_manager::m_lock_get_global_throttle_out );
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network_throttle_manager::get_global_throttle_out().handle_trafic_exact( packet_size ); // increase counter - global
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}
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}
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void connection_basic::do_send_handler_write(const void* ptr , size_t cb ) {
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// No sleeping here; sleeping is done once and for all in connection<t_protocol_handler>::handle_write
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MTRACE("handler_write (direct) - before ASIO write, for packet="<<cb<<" B (after sleep)");
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}
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void connection_basic::do_send_handler_write_from_queue( const boost::system::error_code& e, size_t cb, int q_len ) {
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// No sleeping here; sleeping is done once and for all in connection<t_protocol_handler>::handle_write
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MTRACE("handler_write (after write, from queue="<<q_len<<") - before ASIO write, for packet="<<cb<<" B (after sleep)");
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}
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void connection_basic::logger_handle_net_read(size_t size) { // network data read
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}
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void connection_basic::logger_handle_net_write(size_t size) {
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}
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double connection_basic::get_sleep_time(size_t cb) {
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CRITICAL_REGION_LOCAL(epee::net_utils::network_throttle_manager::network_throttle_manager::m_lock_get_global_throttle_out);
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auto t = network_throttle_manager::get_global_throttle_out().get_sleep_time(cb);
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return t;
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}
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} // namespace
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} // namespace
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