From 4b3d9de65bc267b0362690d83fa9113ea2b456c8 Mon Sep 17 00:00:00 2001 From: Jeffrey Date: Wed, 2 Mar 2022 00:29:52 -0600 Subject: [PATCH] Remove levin_client_async.* --- contrib/epee/include/net/levin_client_async.h | 585 ------------------ .../epee/include/net/levin_client_async.inl | 0 2 files changed, 585 deletions(-) delete mode 100644 contrib/epee/include/net/levin_client_async.h delete mode 100644 contrib/epee/include/net/levin_client_async.inl diff --git a/contrib/epee/include/net/levin_client_async.h b/contrib/epee/include/net/levin_client_async.h deleted file mode 100644 index ed92f4b95..000000000 --- a/contrib/epee/include/net/levin_client_async.h +++ /dev/null @@ -1,585 +0,0 @@ -// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are met: -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * 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. -// * Neither the name of the Andrey N. Sabelnikov 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 OWNER 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 INTERRUPTION) HOWEVER CAUSED AND -// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -// - - -#pragma once - -#include "" -#include "net_helper.h" -#include "levin_base.h" - -#undef MONERO_DEFAULT_LOG_CATEGORY -#define MONERO_DEFAULT_LOG_CATEGORY "net" - - -namespace epee -{ -namespace levin -{ - - /************************************************************************ - * levin_client_async - probably it is not really fast implementation, - * each handler thread could make up to 30 ms latency. - * But, handling events in reader thread will cause dead locks in - * case of recursive call (call invoke() to the same connection - * on reader thread on remote invoke() handler) - ***********************************************************************/ - - - class levin_client_async - { - levin_commands_handler* m_pcommands_handler; - void (*commands_handler_destroy)(levin_commands_handler*); - volatile uint32_t m_is_stop; - volatile uint32_t m_threads_count; - ::critical_section m_send_lock; - - std::string m_local_invoke_buff; - ::critical_section m_local_invoke_buff_lock; - volatile int m_invoke_res; - - volatile uint32_t m_invoke_data_ready; - volatile uint32_t m_invoke_is_active; - - boost::mutex m_invoke_event; - boost::condition_variable m_invoke_cond; - size_t m_timeout; - - ::critical_section m_recieved_packets_lock; - struct packet_entry - { - bucket_head m_hd; - std::string m_body; - uint32_t m_connection_index; - }; - std::list m_recieved_packets; - /* - m_current_connection_index needed when some connection was broken and reconnected - in this - case we could have some received packets in que, which shoud not be handled - */ - volatile uint32_t m_current_connection_index; - ::critical_section m_invoke_lock; - ::critical_section m_reciev_packet_lock; - ::critical_section m_connection_lock; - net_utils::blocked_mode_client m_transport; - public: - levin_client_async():m_pcommands_handler(NULL), commands_handler_destroy(NULL), m_is_stop(0), m_threads_count(0), m_invoke_data_ready(0), m_invoke_is_active(0) - {} - levin_client_async(const levin_client_async& /*v*/):m_pcommands_handler(NULL), commands_handler_destroy(NULL), m_is_stop(0), m_threads_count(0), m_invoke_data_ready(0), m_invoke_is_active(0) - {} - ~levin_client_async() - { - boost::interprocess::ipcdetail::atomic_write32(&m_is_stop, 1); - disconnect(); - - - while(boost::interprocess::ipcdetail::atomic_read32(&m_threads_count)) - ::Sleep(100); - - set_handler(NULL); - } - - void set_handler(levin_commands_handler* phandler, void (*destroy)(levin_commands_handler*) = NULL) - { - if (commands_handler_destroy && m_pcommands_handler) - (*commands_handler_destroy)(m_pcommands_handler); - m_pcommands_handler = phandler; - m_pcommands_handler_destroy = destroy; - } - - bool connect(uint32_t ip, uint32_t port, uint32_t timeout) - { - loop_call_guard(); - critical_region cr(m_connection_lock); - - m_timeout = timeout; - bool res = false; - CRITICAL_REGION_BEGIN(m_reciev_packet_lock); - CRITICAL_REGION_BEGIN(m_send_lock); - res = levin_client_impl::connect(ip, port, timeout); - boost::interprocess::ipcdetail::atomic_inc32(&m_current_connection_index); - CRITICAL_REGION_END(); - CRITICAL_REGION_END(); - if(res && !boost::interprocess::ipcdetail::atomic_read32(&m_threads_count) ) - { - //boost::interprocess::ipcdetail::atomic_write32(&m_is_stop, 0);//m_is_stop = false; - boost::thread( boost::bind(&levin_duplex_client::reciever_thread, this) ); - boost::thread( boost::bind(&levin_duplex_client::handler_thread, this) ); - boost::thread( boost::bind(&levin_duplex_client::handler_thread, this) ); - } - - return res; - } - bool is_connected() - { - loop_call_guard(); - critical_region cr(m_cs); - return levin_client_impl::is_connected(); - } - - inline - bool check_connection() - { - loop_call_guard(); - critical_region cr(m_cs); - - if(!is_connected()) - { - if( !reconnect() ) - { - LOG_ERROR("Reconnect Failed. Failed to invoke() because not connected!"); - return false; - } - } - return true; - } - - //------------------------------------------------------------------------------ - inline - bool recv_n(SOCKET s, char* pbuff, size_t cb) - { - while(cb) - { - int res = ::recv(m_socket, pbuff, (int)cb, 0); - - if(SOCKET_ERROR == res) - { - if(!m_connected) - return false; - - int err = ::WSAGetLastError(); - LOG_ERROR("Failed to recv(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\""); - disconnect(); - //reconnect(); - return false; - }else if(res == 0) - { - disconnect(); - //reconnect(); - return false; - } - LOG_PRINT_L4("[" << m_socket <<"] RECV " << res); - cb -= res; - pbuff += res; - } - - return true; - } - - //------------------------------------------------------------------------------ - inline - bool recv_n(SOCKET s, std::string& buff) - { - size_t cb_remain = buff.size(); - char* m_current_ptr = (char*)buff.data(); - return recv_n(s, m_current_ptr, cb_remain); - } - - bool disconnect() - { - //boost::interprocess::ipcdetail::atomic_write32(&m_is_stop, 1);//m_is_stop = true; - loop_call_guard(); - critical_region cr(m_cs); - levin_client_impl::disconnect(); - - CRITICAL_REGION_BEGIN(m_local_invoke_buff_lock); - m_local_invoke_buff.clear(); - m_invoke_res = LEVIN_ERROR_CONNECTION_DESTROYED; - CRITICAL_REGION_END(); - boost::interprocess::ipcdetail::atomic_write32(&m_invoke_data_ready, 1); //m_invoke_data_ready = true; - m_invoke_cond.notify_all(); - return true; - } - - void loop_call_guard() - { - - } - - void on_leave_invoke() - { - boost::interprocess::ipcdetail::atomic_write32(&m_invoke_is_active, 0); - } - - int invoke(const GUID& target, int command, const std::string& in_buff, std::string& buff_out) - { - - critical_region cr_invoke(m_invoke_lock); - - boost::interprocess::ipcdetail::atomic_write32(&m_invoke_is_active, 1); - boost::interprocess::ipcdetail::atomic_write32(&m_invoke_data_ready, 0); - misc_utils::destr_ptr hdlr = misc_utils::add_exit_scope_handler(boost::bind(&levin_duplex_client::on_leave_invoke, this)); - - loop_call_guard(); - - if(!check_connection()) - return LEVIN_ERROR_CONNECTION_DESTROYED; - - - bucket_head head = {0}; - head.m_signature = LEVIN_SIGNATURE; - head.m_cb = in_buff.size(); - head.m_have_to_return_data = true; - head.m_id = target; -#ifdef TRACE_LEVIN_PACKETS_BY_GUIDS - ::UuidCreate(&head.m_id); -#endif - head.m_command = command; - head.m_protocol_version = LEVIN_PROTOCOL_VER_1; - head.m_flags = LEVIN_PACKET_REQUEST; - LOG_PRINT("[" << m_socket <<"] Sending invoke data", LOG_LEVEL_4); - - CRITICAL_REGION_BEGIN(m_send_lock); - LOG_PRINT_L4("[" << m_socket <<"] SEND " << sizeof(head)); - int res = ::send(m_socket, (const char*)&head, sizeof(head), 0); - if(SOCKET_ERROR == res) - { - int err = ::WSAGetLastError(); - LOG_ERROR("Failed to send(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\""); - disconnect(); - return LEVIN_ERROR_CONNECTION_DESTROYED; - } - LOG_PRINT_L4("[" << m_socket <<"] SEND " << (int)in_buff.size()); - res = ::send(m_socket, in_buff.data(), (int)in_buff.size(), 0); - if(SOCKET_ERROR == res) - { - int err = ::WSAGetLastError(); - LOG_ERROR("Failed to send(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\""); - disconnect(); - return LEVIN_ERROR_CONNECTION_DESTROYED; - } - CRITICAL_REGION_END(); - LOG_PRINT_L4("LEVIN_PACKET_SENT. [len=" << head.m_cb << ", flags=" << head.m_flags << ", is_cmd=" << head.m_have_to_return_data <<", cmd_id = " << head.m_command << ", pr_v=" << head.m_protocol_version << ", uid=" << string_tools::get_str_from_guid_a(head.m_id) << "]"); - - //hard coded timeout in 10 minutes for maximum invoke period. if it happens, it could mean only some real troubles. - boost::system_time timeout = boost::get_system_time()+ boost::posix_time::milliseconds(100); - size_t timeout_count = 0; - boost::unique_lock lock(m_invoke_event); - - while(!boost::interprocess::ipcdetail::atomic_read32(&m_invoke_data_ready)) - { - if(!m_invoke_cond.timed_wait(lock, timeout)) - { - if(timeout_count < 10) - { - //workaround to avoid freezing at timed_wait called after notify_all. - timeout = boost::get_system_time()+ boost::posix_time::milliseconds(100); - ++timeout_count; - continue; - }else if(timeout_count == 10) - { - //workaround to avoid freezing at timed_wait called after notify_all. - timeout = boost::get_system_time()+ boost::posix_time::minutes(10); - ++timeout_count; - continue; - }else - { - LOG_PRINT("[" << m_socket <<"] Timeout on waiting invoke result. ", LOG_LEVEL_0); - //disconnect(); - return LEVIN_ERROR_CONNECTION_TIMEDOUT; - } - } - } - - - CRITICAL_REGION_BEGIN(m_local_invoke_buff_lock); - buff_out.swap(m_local_invoke_buff); - m_local_invoke_buff.clear(); - CRITICAL_REGION_END(); - return m_invoke_res; - } - - int notify(const GUID& target, int command, const std::string& in_buff) - { - if(!check_connection()) - return LEVIN_ERROR_CONNECTION_DESTROYED; - - bucket_head head = {0}; - head.m_signature = LEVIN_SIGNATURE; - head.m_cb = in_buff.size(); - head.m_have_to_return_data = false; - head.m_id = target; -#ifdef TRACE_LEVIN_PACKETS_BY_GUIDS - ::UuidCreate(&head.m_id); -#endif - head.m_command = command; - head.m_protocol_version = LEVIN_PROTOCOL_VER_1; - head.m_flags = LEVIN_PACKET_REQUEST; - CRITICAL_REGION_BEGIN(m_send_lock); - LOG_PRINT_L4("[" << m_socket <<"] SEND " << sizeof(head)); - int res = ::send(m_socket, (const char*)&head, sizeof(head), 0); - if(SOCKET_ERROR == res) - { - int err = ::WSAGetLastError(); - LOG_ERROR("Failed to send(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\""); - disconnect(); - return LEVIN_ERROR_CONNECTION_DESTROYED; - } - LOG_PRINT_L4("[" << m_socket <<"] SEND " << (int)in_buff.size()); - res = ::send(m_socket, in_buff.data(), (int)in_buff.size(), 0); - if(SOCKET_ERROR == res) - { - int err = ::WSAGetLastError(); - LOG_ERROR("Failed to send(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\""); - disconnect(); - return LEVIN_ERROR_CONNECTION_DESTROYED; - } - CRITICAL_REGION_END(); - LOG_PRINT_L4("LEVIN_PACKET_SENT. [len=" << head.m_cb << ", flags=" << head.m_flags << ", is_cmd=" << head.m_have_to_return_data <<", cmd_id = " << head.m_command << ", pr_v=" << head.m_protocol_version << ", uid=" << string_tools::get_str_from_guid_a(head.m_id) << "]"); - - return 1; - } - - - private: - bool have_some_data(SOCKET sock, int interval = 1) - { - fd_set fds; - FD_ZERO(&fds); - FD_SET(sock, &fds); - - fd_set fdse; - FD_ZERO(&fdse); - FD_SET(sock, &fdse); - - - timeval tv; - tv.tv_sec = interval; - tv.tv_usec = 0; - - int sel_res = select(0, &fds, 0, &fdse, &tv); - if(0 == sel_res) - return false; - else if(sel_res == SOCKET_ERROR) - { - if(m_is_stop) - return false; - int err_code = ::WSAGetLastError(); - LOG_ERROR("Filed to call select, err code = " << err_code); - disconnect(); - }else - { - if(fds.fd_array[0]) - {//some read operations was performed - return true; - }else if(fdse.fd_array[0]) - {//some error was at the socket - return true; - } - } - return false; - } - - - bool reciev_and_process_incoming_data() - { - bucket_head head = {0}; - uint32_t conn_index = 0; - bool is_request = false; - std::string local_buff; - CRITICAL_REGION_BEGIN(m_reciev_packet_lock);//to protect from socket reconnect between head and body - - if(!recv_n(m_socket, (char*)&head, sizeof(head))) - { - if(m_is_stop) - return false; - LOG_ERROR("Failed to recv_n"); - return false; - } - - conn_index = boost::interprocess::ipcdetail::atomic_read32(&m_current_connection_index); - - if(head.m_signature!=LEVIN_SIGNATURE) - { - LOG_ERROR("Signature mismatch in response"); - return false; - } - - is_request = (head.m_protocol_version == LEVIN_PROTOCOL_VER_1 && head.m_flags&LEVIN_PACKET_REQUEST); - - - local_buff.resize((size_t)head.m_cb); - if(!recv_n(m_socket, local_buff)) - { - if(m_is_stop) - return false; - LOG_ERROR("Filed to reciev"); - return false; - } - CRITICAL_REGION_END(); - - LOG_PRINT_L4("LEVIN_PACKET_RECEIVED. [len=" << head.m_cb << ", flags=" << head.m_flags << ", is_cmd=" << head.m_have_to_return_data <<", cmd_id = " << head.m_command << ", pr_v=" << head.m_protocol_version << ", uid=" << string_tools::get_str_from_guid_a(head.m_id) << "]"); - - if(is_request) - { - CRITICAL_REGION_BEGIN(m_recieved_packets_lock); - m_recieved_packets.resize(m_recieved_packets.size() + 1); - m_recieved_packets.back().m_hd = head; - m_recieved_packets.back().m_body.swap(local_buff); - m_recieved_packets.back().m_connection_index = conn_index; - CRITICAL_REGION_END(); - /* - - */ - }else - {//this is some response - - CRITICAL_REGION_BEGIN(m_local_invoke_buff_lock); - m_local_invoke_buff.swap(local_buff); - m_invoke_res = head.m_return_code; - CRITICAL_REGION_END(); - boost::interprocess::ipcdetail::atomic_write32(&m_invoke_data_ready, 1); //m_invoke_data_ready = true; - m_invoke_cond.notify_all(); - - } - return true; - } - - bool reciever_thread() - { - LOG_PRINT_L3("[" << m_socket <<"] Socket reciever thread started.[m_threads_count=" << m_threads_count << "]"); - log_space::log_singletone::set_thread_log_prefix("RECIEVER_WORKER"); - boost::interprocess::ipcdetail::atomic_inc32(&m_threads_count); - - while(!m_is_stop) - { - if(!m_connected) - { - Sleep(100); - continue; - } - - if(have_some_data(m_socket, 1)) - { - if(!reciev_and_process_incoming_data()) - { - if(m_is_stop) - { - break;//boost::interprocess::ipcdetail::atomic_dec32(&m_threads_count); - //return true; - } - LOG_ERROR("Failed to reciev_and_process_incoming_data. shutting down"); - //boost::interprocess::ipcdetail::atomic_dec32(&m_threads_count); - //disconnect_no_wait(); - //break; - } - } - } - - boost::interprocess::ipcdetail::atomic_dec32(&m_threads_count); - LOG_PRINT_L3("[" << m_socket <<"] Socket reciever thread stopped.[m_threads_count=" << m_threads_count << "]"); - return true; - } - - bool process_recieved_packet(bucket_head& head, const std::string& local_buff, uint32_t conn_index) - { - - net_utils::connection_context_base conn_context; - conn_context.m_remote_address = m_address; - if(head.m_have_to_return_data) - { - std::string return_buff; - if(m_pcommands_handler) - head.m_return_code = m_pcommands_handler->invoke(head.m_id, head.m_command, local_buff, return_buff, conn_context); - else - head.m_return_code = LEVIN_ERROR_CONNECTION_HANDLER_NOT_DEFINED; - - - - head.m_cb = return_buff.size(); - head.m_have_to_return_data = false; - head.m_protocol_version = LEVIN_PROTOCOL_VER_1; - head.m_flags = LEVIN_PACKET_RESPONSE; - - std::string send_buff((const char*)&head, sizeof(head)); - send_buff += return_buff; - CRITICAL_REGION_BEGIN(m_send_lock); - if(conn_index != boost::interprocess::ipcdetail::atomic_read32(&m_current_connection_index)) - {//there was reconnect, send response back is not allowed - return true; - } - int res = ::send(m_socket, (const char*)send_buff.data(), send_buff.size(), 0); - if(res == SOCKET_ERROR) - { - int err_code = ::WSAGetLastError(); - LOG_ERROR("Failed to send, err = " << err_code); - return false; - } - CRITICAL_REGION_END(); - LOG_PRINT_L4("LEVIN_PACKET_SENT. [len=" << head.m_cb << ", flags=" << head.m_flags << ", is_cmd=" << head.m_have_to_return_data <<", cmd_id = " << head.m_command << ", pr_v=" << head.m_protocol_version << ", uid=" << string_tools::get_str_from_guid_a(head.m_id) << "]"); - - } - else - { - if(m_pcommands_handler) - m_pcommands_handler->notify(head.m_id, head.m_command, local_buff, conn_context); - } - - return true; - } - - bool handler_thread() - { - LOG_PRINT_L3("[" << m_socket <<"] Socket handler thread started.[m_threads_count=" << m_threads_count << "]"); - log_space::log_singletone::set_thread_log_prefix("HANDLER_WORKER"); - boost::interprocess::ipcdetail::atomic_inc32(&m_threads_count); - - while(!m_is_stop) - { - bool have_some_work = false; - std::string local_buff; - bucket_head bh = {0}; - uint32_t conn_index = 0; - - CRITICAL_REGION_BEGIN(m_recieved_packets_lock); - if(m_recieved_packets.size()) - { - bh = m_recieved_packets.begin()->m_hd; - conn_index = m_recieved_packets.begin()->m_connection_index; - local_buff.swap(m_recieved_packets.begin()->m_body); - have_some_work = true; - m_recieved_packets.pop_front(); - } - CRITICAL_REGION_END(); - - if(have_some_work) - { - process_recieved_packet(bh, local_buff, conn_index); - }else - { - //Idle when no work - Sleep(30); - } - } - - boost::interprocess::ipcdetail::atomic_dec32(&m_threads_count); - LOG_PRINT_L3("[" << m_socket <<"] Socket handler thread stopped.[m_threads_count=" << m_threads_count << "]"); - return true; - } - }; - -} -} diff --git a/contrib/epee/include/net/levin_client_async.inl b/contrib/epee/include/net/levin_client_async.inl deleted file mode 100644 index e69de29bb..000000000