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https://git.wownero.com/wownero/wownero.git
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072102cfd2
All code which was using ip and port now uses a new IPv4 object, subclass of a new network_address class. This will allow easy addition of I2P addresses later (and also IPv6, etc). Both old style and new style peer lists are now sent in the P2P protocol, which is inefficient but allows peers using both codebases to talk to each other. This will be removed in the future. No other subclasses than IPv4 exist yet.
318 lines
10 KiB
C++
318 lines
10 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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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
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef _ABSTRACT_TCP_SERVER_H_
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#define _ABSTRACT_TCP_SERVER_H_
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#include <process.h>
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#include <list>
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#include <winsock2.h>
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#include "winobj.h"
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//#include "threads_helper.h"
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#include "net_utils_base.h"
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#pragma comment(lib, "Ws2_32.lib")
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "net"
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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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/* */
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/************************************************************************/
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class soket_sender: public i_service_endpoint
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{
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public:
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soket_sender(SOCKET sock):m_sock(sock){}
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private:
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virtual bool handle_send(const void* ptr, size_t cb)
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{
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if(cb != send(m_sock, (char*)ptr, (int)cb, 0))
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{
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int sock_err = WSAGetLastError();
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LOG_ERROR("soket_sender: Failed to send " << cb << " bytes, Error=" << sock_err);
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return false;
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}
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return true;
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}
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SOCKET m_sock;
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};
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/************************************************************************/
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/* */
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/************************************************************************/
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template<class THandler>
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class abstract_tcp_server
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{
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public:
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abstract_tcp_server();
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bool init_server(int port_no);
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bool deinit_server();
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bool run_server();
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bool send_stop_signal();
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typename THandler::config_type& get_config_object(){return m_config;}
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private:
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bool invoke_connection(SOCKET hnew_sock, long ip_from, int post_from);
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static unsigned __stdcall ConnectionHandlerProc(void* lpParameter);
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class thread_context;
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typedef std::list<thread_context> connections_container;
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typedef typename connections_container::iterator connections_iterator;
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struct thread_context
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{
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HANDLE m_htread;
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SOCKET m_socket;
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abstract_tcp_server* powner;
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connection_context m_context;
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typename connections_iterator m_self_it;
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};
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SOCKET m_listen_socket;
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int m_port;
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bool m_initialized;
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volatile LONG m_stop_server;
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volatile LONG m_threads_count;
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typename THandler::config_type m_config;
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connections_container m_connections;
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critical_section m_connections_lock;
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};
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template<class THandler>
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unsigned __stdcall abstract_tcp_server<THandler>::ConnectionHandlerProc(void* lpParameter)
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{
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thread_context* pthread_context = (thread_context*)lpParameter;
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if(!pthread_context)
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return 0;
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abstract_tcp_server<THandler>* pthis = pthread_context->powner;
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::InterlockedIncrement(&pthis->m_threads_count);
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::CoInitialize(NULL);
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LOG_PRINT("Handler thread STARTED with socket=" << pthread_context->m_socket, LOG_LEVEL_2);
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int res = 0;
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soket_sender sndr(pthread_context->m_socket);
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THandler srv(&sndr, pthread_context->powner->m_config, pthread_context->m_context);
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srv.after_init_connection();
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char buff[1000] = {0};
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std::string ansver;
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while ( (res = recv(pthread_context->m_socket, (char*)buff, 1000, 0)) > 0)
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{
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LOG_PRINT("Data in, " << res << " bytes", LOG_LEVEL_3);
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if(!srv.handle_recv(buff, res))
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break;
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}
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shutdown(pthread_context->m_socket, SD_BOTH);
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closesocket(pthread_context->m_socket);
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abstract_tcp_server* powner = pthread_context->powner;
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LOG_PRINT("Handler thread with socket=" << pthread_context->m_socket << " STOPPED", LOG_LEVEL_2);
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powner->m_connections_lock.lock();
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::CloseHandle(pthread_context->m_htread);
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pthread_context->powner->m_connections.erase(pthread_context->m_self_it);
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powner->m_connections_lock.unlock();
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CoUninitialize();
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::InterlockedDecrement(&pthis->m_threads_count);
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return 1;
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}
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//----------------------------------------------------------------------------------------
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template<class THandler>
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abstract_tcp_server<THandler>::abstract_tcp_server():m_listen_socket(INVALID_SOCKET),
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m_initialized(false),
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m_stop_server(0), m_port(0), m_threads_count(0)
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{
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}
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//----------------------------------------------------------------------------------------
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template<class THandler>
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bool abstract_tcp_server<THandler>::init_server(int port_no)
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{
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m_port = port_no;
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WSADATA wsad = {0};
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int err = ::WSAStartup(MAKEWORD(2,2), &wsad);
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if ( err != 0 || LOBYTE( wsad.wVersion ) != 2 || HIBYTE( wsad.wVersion ) != 2 )
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{
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LOG_ERROR("Could not find a usable WinSock DLL, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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return false;
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}
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m_initialized = true;
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m_listen_socket = ::WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, 0);
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if(INVALID_SOCKET == m_listen_socket)
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{
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err = ::WSAGetLastError();
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LOG_ERROR("Failed to create socket, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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return false;
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}
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int opt = 1;
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setsockopt (m_listen_socket, SOL_SOCKET,SO_REUSEADDR, reinterpret_cast<char*>(&opt), sizeof(int));
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sockaddr_in adr = {0};
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adr.sin_family = AF_INET;
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adr.sin_addr.s_addr = htonl(INADDR_ANY);
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adr.sin_port = (u_short)htons(port_no);
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err = bind(m_listen_socket, (const sockaddr*)&adr, sizeof(adr ));
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if(SOCKET_ERROR == err )
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{
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err = ::WSAGetLastError();
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LOG_PRINT("Failed to Bind, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"", LOG_LEVEL_2);
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deinit_server();
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return false;
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}
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::InterlockedExchange(&m_stop_server, 0);
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return true;
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}
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//----------------------------------------------------------------------------------------
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template<class THandler>
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bool abstract_tcp_server<THandler>::deinit_server()
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{
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if(!m_initialized)
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return true;
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if(INVALID_SOCKET != m_listen_socket)
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{
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shutdown(m_listen_socket, SD_BOTH);
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int res = closesocket(m_listen_socket);
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if(SOCKET_ERROR == res)
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{
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int err = ::WSAGetLastError();
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LOG_ERROR("Failed to closesocket(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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}
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m_listen_socket = INVALID_SOCKET;
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}
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int res = ::WSACleanup();
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if(SOCKET_ERROR == res)
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{
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int err = ::WSAGetLastError();
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LOG_ERROR("Failed to WSACleanup(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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}
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m_initialized = false;
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return true;
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}
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//----------------------------------------------------------------------------------------
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template<class THandler>
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bool abstract_tcp_server<THandler>::send_stop_signal()
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{
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InterlockedExchange(&m_stop_server, 1);
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return true;
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}
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//----------------------------------------------------------------------------------------
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template<class THandler>
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bool abstract_tcp_server<THandler>::run_server()
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{
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int err = listen(m_listen_socket, 10000);
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if(SOCKET_ERROR == err )
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{
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err = ::WSAGetLastError();
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LOG_ERROR("Failed to listen, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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return false;
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}
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LOG_PRINT("Listening port "<< m_port << "...." , LOG_LEVEL_2);
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while(!m_stop_server)
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{
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sockaddr_in adr_from = {0};
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int adr_len = sizeof(adr_from);
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fd_set read_fs = {0};
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read_fs.fd_count = 1;
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read_fs.fd_array[0] = m_listen_socket;
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TIMEVAL tv = {0};
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tv.tv_usec = 100;
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int select_res = select(0, &read_fs, NULL, NULL, &tv);
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if(!select_res)
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continue;
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SOCKET new_sock = WSAAccept(m_listen_socket, (sockaddr *)&adr_from, &adr_len, NULL, NULL);
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LOG_PRINT("Accepted connection on socket=" << new_sock, LOG_LEVEL_2);
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invoke_connection(new_sock, adr_from.sin_addr.s_addr, adr_from.sin_port);
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}
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deinit_server();
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#define ABSTR_TCP_SRV_WAIT_COUNT_MAX 5000
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#define ABSTR_TCP_SRV_WAIT_COUNT_INTERVAL 1000
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int wait_count = 0;
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while(m_threads_count && wait_count*1000 < ABSTR_TCP_SRV_WAIT_COUNT_MAX)
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{
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::Sleep(ABSTR_TCP_SRV_WAIT_COUNT_INTERVAL);
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wait_count++;
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}
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LOG_PRINT("abstract_tcp_server exit with wait count=" << wait_count*ABSTR_TCP_SRV_WAIT_COUNT_INTERVAL << "(max=" << ABSTR_TCP_SRV_WAIT_COUNT_MAX <<")", LOG_LEVEL_0);
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return true;
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}
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//----------------------------------------------------------------------------------------
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template<class THandler>
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bool abstract_tcp_server<THandler>::invoke_connection(SOCKET hnew_sock, const network_address &remote_address)
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{
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m_connections_lock.lock();
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m_connections.push_back(thread_context());
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m_connections_lock.unlock();
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m_connections.back().m_socket = hnew_sock;
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m_connections.back().powner = this;
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m_connections.back().m_self_it = --m_connections.end();
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m_connections.back().m_context.m_remote_address = remote_address;
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m_connections.back().m_htread = threads_helper::create_thread(ConnectionHandlerProc, &m_connections.back());
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return true;
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}
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//----------------------------------------------------------------------------------------
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//----------------------------------------------------------------------------------------
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//----------------------------------------------------------------------------------------
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}
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}
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#endif //_ABSTRACT_TCP_SERVER_H_
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