317 lines
10 KiB
C++
317 lines
10 KiB
C++
// 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.
|
|
//
|
|
|
|
|
|
|
|
#ifndef _ABSTRACT_TCP_SERVER_H_
|
|
#define _ABSTRACT_TCP_SERVER_H_
|
|
|
|
#include <process.h>
|
|
#include <list>
|
|
#include <winsock2.h>
|
|
#include "winobj.h"
|
|
//#include "threads_helper.h"
|
|
#include "net_utils_base.h"
|
|
|
|
#pragma comment(lib, "Ws2_32.lib")
|
|
|
|
namespace epee
|
|
{
|
|
namespace net_utils
|
|
{
|
|
/************************************************************************/
|
|
/* */
|
|
/************************************************************************/
|
|
class soket_sender: public i_service_endpoint
|
|
{
|
|
public:
|
|
soket_sender(SOCKET sock):m_sock(sock){}
|
|
private:
|
|
virtual bool handle_send(const void* ptr, size_t cb)
|
|
{
|
|
if(cb != send(m_sock, (char*)ptr, (int)cb, 0))
|
|
{
|
|
int sock_err = WSAGetLastError();
|
|
LOG_ERROR("soket_sender: Failed to send " << cb << " bytes, Error=" << sock_err);
|
|
return false;
|
|
}
|
|
return true;
|
|
|
|
}
|
|
|
|
SOCKET m_sock;
|
|
};
|
|
|
|
|
|
|
|
/************************************************************************/
|
|
/* */
|
|
/************************************************************************/
|
|
template<class THandler>
|
|
class abstract_tcp_server
|
|
{
|
|
public:
|
|
abstract_tcp_server();
|
|
|
|
bool init_server(int port_no);
|
|
bool deinit_server();
|
|
bool run_server();
|
|
bool send_stop_signal();
|
|
|
|
typename THandler::config_type& get_config_object(){return m_config;}
|
|
|
|
private:
|
|
bool invoke_connection(SOCKET hnew_sock, long ip_from, int post_from);
|
|
static unsigned __stdcall ConnectionHandlerProc(void* lpParameter);
|
|
|
|
class thread_context;
|
|
typedef std::list<thread_context> connections_container;
|
|
typedef typename connections_container::iterator connections_iterator;
|
|
|
|
struct thread_context
|
|
{
|
|
HANDLE m_htread;
|
|
SOCKET m_socket;
|
|
abstract_tcp_server* powner;
|
|
connection_context m_context;
|
|
typename connections_iterator m_self_it;
|
|
};
|
|
|
|
SOCKET m_listen_socket;
|
|
int m_port;
|
|
bool m_initialized;
|
|
volatile LONG m_stop_server;
|
|
volatile LONG m_threads_count;
|
|
typename THandler::config_type m_config;
|
|
connections_container m_connections;
|
|
critical_section m_connections_lock;
|
|
};
|
|
|
|
template<class THandler>
|
|
unsigned __stdcall abstract_tcp_server<THandler>::ConnectionHandlerProc(void* lpParameter)
|
|
{
|
|
|
|
thread_context* pthread_context = (thread_context*)lpParameter;
|
|
if(!pthread_context)
|
|
return 0;
|
|
abstract_tcp_server<THandler>* pthis = pthread_context->powner;
|
|
|
|
::InterlockedIncrement(&pthis->m_threads_count);
|
|
|
|
::CoInitialize(NULL);
|
|
|
|
|
|
LOG_PRINT("Handler thread STARTED with socket=" << pthread_context->m_socket, LOG_LEVEL_2);
|
|
int res = 0;
|
|
|
|
soket_sender sndr(pthread_context->m_socket);
|
|
THandler srv(&sndr, pthread_context->powner->m_config, pthread_context->m_context);
|
|
|
|
|
|
srv.after_init_connection();
|
|
|
|
char buff[1000] = {0};
|
|
std::string ansver;
|
|
while ( (res = recv(pthread_context->m_socket, (char*)buff, 1000, 0)) > 0)
|
|
{
|
|
LOG_PRINT("Data in, " << res << " bytes", LOG_LEVEL_3);
|
|
if(!srv.handle_recv(buff, res))
|
|
break;
|
|
}
|
|
shutdown(pthread_context->m_socket, SD_BOTH);
|
|
closesocket(pthread_context->m_socket);
|
|
|
|
abstract_tcp_server* powner = pthread_context->powner;
|
|
LOG_PRINT("Handler thread with socket=" << pthread_context->m_socket << " STOPPED", LOG_LEVEL_2);
|
|
powner->m_connections_lock.lock();
|
|
::CloseHandle(pthread_context->m_htread);
|
|
pthread_context->powner->m_connections.erase(pthread_context->m_self_it);
|
|
powner->m_connections_lock.unlock();
|
|
CoUninitialize();
|
|
::InterlockedDecrement(&pthis->m_threads_count);
|
|
return 1;
|
|
}
|
|
//----------------------------------------------------------------------------------------
|
|
template<class THandler>
|
|
abstract_tcp_server<THandler>::abstract_tcp_server():m_listen_socket(INVALID_SOCKET),
|
|
m_initialized(false),
|
|
m_stop_server(0), m_port(0), m_threads_count(0)
|
|
{
|
|
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
template<class THandler>
|
|
bool abstract_tcp_server<THandler>::init_server(int port_no)
|
|
{
|
|
m_port = port_no;
|
|
WSADATA wsad = {0};
|
|
int err = ::WSAStartup(MAKEWORD(2,2), &wsad);
|
|
if ( err != 0 || LOBYTE( wsad.wVersion ) != 2 || HIBYTE( wsad.wVersion ) != 2 )
|
|
{
|
|
LOG_ERROR("Could not find a usable WinSock DLL, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
|
|
return false;
|
|
}
|
|
|
|
m_initialized = true;
|
|
|
|
m_listen_socket = ::WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, 0);
|
|
if(INVALID_SOCKET == m_listen_socket)
|
|
{
|
|
err = ::WSAGetLastError();
|
|
LOG_ERROR("Failed to create socket, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
|
|
return false;
|
|
}
|
|
|
|
int opt = 1;
|
|
setsockopt (m_listen_socket, SOL_SOCKET,SO_REUSEADDR, reinterpret_cast<char*>(&opt), sizeof(int));
|
|
|
|
sockaddr_in adr = {0};
|
|
adr.sin_family = AF_INET;
|
|
adr.sin_addr.s_addr = htonl(INADDR_ANY);
|
|
adr.sin_port = (u_short)htons(port_no);
|
|
|
|
err = bind(m_listen_socket, (const sockaddr*)&adr, sizeof(adr ));
|
|
if(SOCKET_ERROR == err )
|
|
{
|
|
err = ::WSAGetLastError();
|
|
LOG_PRINT("Failed to Bind, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"", LOG_LEVEL_2);
|
|
deinit_server();
|
|
return false;
|
|
}
|
|
|
|
::InterlockedExchange(&m_stop_server, 0);
|
|
|
|
return true;
|
|
}
|
|
//----------------------------------------------------------------------------------------
|
|
template<class THandler>
|
|
bool abstract_tcp_server<THandler>::deinit_server()
|
|
{
|
|
|
|
if(!m_initialized)
|
|
return true;
|
|
|
|
if(INVALID_SOCKET != m_listen_socket)
|
|
{
|
|
shutdown(m_listen_socket, SD_BOTH);
|
|
int res = closesocket(m_listen_socket);
|
|
if(SOCKET_ERROR == res)
|
|
{
|
|
int err = ::WSAGetLastError();
|
|
LOG_ERROR("Failed to closesocket(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
|
|
}
|
|
m_listen_socket = INVALID_SOCKET;
|
|
}
|
|
|
|
int res = ::WSACleanup();
|
|
if(SOCKET_ERROR == res)
|
|
{
|
|
int err = ::WSAGetLastError();
|
|
LOG_ERROR("Failed to WSACleanup(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
|
|
}
|
|
m_initialized = false;
|
|
|
|
return true;
|
|
}
|
|
//----------------------------------------------------------------------------------------
|
|
template<class THandler>
|
|
bool abstract_tcp_server<THandler>::send_stop_signal()
|
|
{
|
|
InterlockedExchange(&m_stop_server, 1);
|
|
return true;
|
|
}
|
|
//----------------------------------------------------------------------------------------
|
|
template<class THandler>
|
|
bool abstract_tcp_server<THandler>::run_server()
|
|
{
|
|
int err = listen(m_listen_socket, 10000);
|
|
if(SOCKET_ERROR == err )
|
|
{
|
|
err = ::WSAGetLastError();
|
|
LOG_ERROR("Failed to listen, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
|
|
return false;
|
|
}
|
|
|
|
LOG_PRINT("Listening port "<< m_port << "...." , LOG_LEVEL_2);
|
|
|
|
while(!m_stop_server)
|
|
{
|
|
sockaddr_in adr_from = {0};
|
|
int adr_len = sizeof(adr_from);
|
|
fd_set read_fs = {0};
|
|
read_fs.fd_count = 1;
|
|
read_fs.fd_array[0] = m_listen_socket;
|
|
TIMEVAL tv = {0};
|
|
tv.tv_usec = 100;
|
|
int select_res = select(0, &read_fs, NULL, NULL, &tv);
|
|
if(!select_res)
|
|
continue;
|
|
SOCKET new_sock = WSAAccept(m_listen_socket, (sockaddr *)&adr_from, &adr_len, NULL, NULL);
|
|
LOG_PRINT("Accepted connection on socket=" << new_sock, LOG_LEVEL_2);
|
|
invoke_connection(new_sock, adr_from.sin_addr.s_addr, adr_from.sin_port);
|
|
}
|
|
|
|
deinit_server();
|
|
|
|
#define ABSTR_TCP_SRV_WAIT_COUNT_MAX 5000
|
|
#define ABSTR_TCP_SRV_WAIT_COUNT_INTERVAL 1000
|
|
|
|
int wait_count = 0;
|
|
|
|
while(m_threads_count && wait_count*1000 < ABSTR_TCP_SRV_WAIT_COUNT_MAX)
|
|
{
|
|
::Sleep(ABSTR_TCP_SRV_WAIT_COUNT_INTERVAL);
|
|
wait_count++;
|
|
}
|
|
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);
|
|
|
|
return true;
|
|
}
|
|
//----------------------------------------------------------------------------------------
|
|
template<class THandler>
|
|
bool abstract_tcp_server<THandler>::invoke_connection(SOCKET hnew_sock, long ip_from, int post_from)
|
|
{
|
|
m_connections_lock.lock();
|
|
m_connections.push_back(thread_context());
|
|
m_connections_lock.unlock();
|
|
m_connections.back().m_socket = hnew_sock;
|
|
m_connections.back().powner = this;
|
|
m_connections.back().m_self_it = --m_connections.end();
|
|
m_connections.back().m_context.m_remote_ip = ip_from;
|
|
m_connections.back().m_context.m_remote_port = post_from;
|
|
m_connections.back().m_htread = threads_helper::create_thread(ConnectionHandlerProc, &m_connections.back());
|
|
|
|
return true;
|
|
}
|
|
//----------------------------------------------------------------------------------------
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
//----------------------------------------------------------------------------------------
|
|
}
|
|
}
|
|
#endif //_ABSTRACT_TCP_SERVER_H_
|