重叠IO模型之完成例程示例

仅为练手，可支持多个client连接。

/***************************************************************************************************** * File name:WSAOverlappedRoutine.cpp * Create time:2011/04/16 * Module:View * Author:zengqh * Blog:http://blog.csdn.net/aimyton * --------------------------------------------------------------------------------------------------- * Memo: * *****************************************************************************************************/#include <stdio.h>#include <stdlib.h>#include <WinSock2.h>#include <Windows.h>#pragma comment(lib, "WS2_32.lib")/***************************************************************************************************** *Macro and Struct definition *****************************************************************************************************/#define trace printf/* It's a true good idea */struct Operation_data_t{WSAOVERLAPPEDwsa_overlapped;WSABUFwsa_buf;DWORDflags;DWORDtransferred_bytes;charrecv_buffer[50];};/***************************************************************************************************** *Global variables *****************************************************************************************************/static HANDLE s_recv_thread_handle= INVALID_HANDLE_VALUE;static SOCKET s_accept_socket[64]= {INVALID_SOCKET};static int s_accept_socket_cnt= 0;static Operation_data_t s_operation_data= {0};/***************************************************************************************************** *Global function *****************************************************************************************************/void CALLBACK CompleteRoutineIO(DWORD dwError,DWORD cbTransferred,LPWSAOVERLAPPED lpOverlapped,DWORD dwFlags);DWORD WINAPI RunTask(LPVOID lp);DWORD WINAPI DoHandleRecv(LPVOID lp);int main(){WSADATAwsa_data;SOCKETlisten_socket;intport = 27150;intret_val;SOCKADDR_INserver_addr;BOOLis_start_thread = FALSE;/* 1.Startup */ret_val = WSAStartup(MAKEWORD(2, 2), &wsa_data);if(0 != ret_val){trace("WSAStartup Error: %d/n", WSAGetLastError ());return 1;}/* 2.Create socket */listen_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(INVALID_SOCKET == listen_socket){trace("socket Error: %d/n", WSAGetLastError ());return 1;}/* 3.Bind */server_addr.sin_family= AF_INET;server_addr.sin_port= htons(port);server_addr.sin_addr.s_addr= inet_addr("127.0.0.1");ret_val = bind(listen_socket, (SOCKADDR*)&server_addr, sizeof(server_addr));if(SOCKET_ERROR == ret_val){trace("bind Error: %d/n", WSAGetLastError ());return 1;}/* 4.Listen */ret_val = listen(listen_socket, 5);if(SOCKET_ERROR == ret_val){trace("listen Error: %d/n", WSAGetLastError ());return 1;}is_start_thread = FALSE;s_recv_thread_handle = ::CreateThread(NULL, 0, RunTask, NULL, CREATE_SUSPENDED, NULL);if(INVALID_HANDLE_VALUE == s_recv_thread_handle){trace("Create thread Error: %d/n", GetLastError ());return 1;}for(;;){s_accept_socket[s_accept_socket_cnt++] = accept(listen_socket, NULL, NULL);if(!is_start_thread){ResumeThread(s_recv_thread_handle);is_start_thread = TRUE;}}WSACleanup();system("pause");return 0;}DWORD WINAPI RunTask(LPVOID lp){DWORDret;s_operation_data.wsa_buf.buf = s_operation_data.recv_buffer;s_operation_data.wsa_buf.len = sizeof(s_operation_data.recv_buffer);for(;;){for(int loop = 0; loop < s_accept_socket_cnt; ++loop){ret = WSARecv(s_accept_socket[loop],&s_operation_data.wsa_buf,1,&s_operation_data.transferred_bytes,&s_operation_data.flags,&s_operation_data.wsa_overlapped,CompleteRoutineIO);SleepEx(1000, TRUE);}}}void CALLBACK CompleteRoutineIO(DWORD dwError,DWORD cbTransferred,LPWSAOVERLAPPED lpOverlapped,DWORD dwFlags){Operation_data_t* operation_data = (Operation_data_t*)lpOverlapped;if(0 != dwError || 0 != cbTransferred){trace("%s/n", operation_data->wsa_buf.buf);}}/***************************************************************************************************** *Class declare******************************************************************************************************//***************************************************************************************************** *Class definition *****************************************************************************************************//***********************************End of File*******************************************************/

 

Client，可在VS下启动多个调试进程，Server输出效果就不一样了。

/***************************************************************************************************** * File name:Send.cpp * Create time:2011/04/12 * Module:View * Author:zengqh * Blog:http://blog.csdn.net/aimyton * --------------------------------------------------------------------------------------------------- * Memo: * *****************************************************************************************************/#include <stdio.h>#include <stdlib.h>#include <Windows.h>#pragma comment(lib, "WS2_32.lib")/***************************************************************************************************** *Macro and Struct definition *****************************************************************************************************/#define trace printf/***************************************************************************************************** *Global variables *****************************************************************************************************//***************************************************************************************************** *Global function *****************************************************************************************************/int main(){WSADATAwsa_data;SOCKETs;SOCKADDR_INserver_addr;intport = 27150;intret_val;charsend_buffer[50] = {0};static intsend_index = 0;/* 1.Startup */ret_val = WSAStartup(MAKEWORD(2, 2), &wsa_data);if(0 != ret_val){trace("WSAStartup Error: %d/n", WSAGetLastError ());return 1;}s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(INVALID_SOCKET == s){trace("socket Error: %d/n", WSAGetLastError ());return 1;}server_addr.sin_family= AF_INET;server_addr.sin_port= htons(port);server_addr.sin_addr.s_addr= inet_addr("127.0.0.1");ret_val = connect(s, (SOCKADDR*)&server_addr, sizeof(server_addr));if(SOCKET_ERROR == ret_val){trace("connect Error: %d/n", WSAGetLastError ());return 1;}int send_bytes = 0;for(;;){sprintf(send_buffer, "Send, %d", send_index++);send_bytes = send(s, send_buffer, sizeof(send_buffer), 0);printf("Client send: %s/n", send_buffer);Sleep(10);if(send_index >= 100){//break;}}closesocket(s);WSACleanup();}/***************************************************************************************************** *Class declare******************************************************************************************************//***************************************************************************************************** *Class definition *****************************************************************************************************//***********************************End of File*******************************************************/