<span style="font-family: Arial, Helvetica, sans-serif;">// iocp_client.cpp : 定义控制台应用程序的入口点。</span><span style="font-family: Arial, Helvetica, sans-serif;">//</span>
#include "stdafx.h" #include <time.h> #include <Winsock2.h> #pragma comment(lib, "ws2_32.lib") #include <stdio.h> void main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD( 1, 1 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { return; } if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 ) { WSACleanup( ); return; } SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); addrSrv.sin_family=AF_INET; addrSrv.sin_port=htons(6000); connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR)); char recvBuf[100]; int n=0; while (true) { memset(recvBuf,0,100); sprintf(recvBuf,"package %d\n",n); printf("send:%s",recvBuf); if(send(sockClient,recvBuf,strlen(recvBuf)+1,0)<=0) { printf("网络异常断开\n"); break; } memset(recvBuf,0,100); recv(sockClient,recvBuf,100,0); printf("recv:%s\n",recvBuf); n++; if (n>=20000) { n=0; } } closesocket(sockClient); WSACleanup(); system("pause"); }
// iocp_server.cpp : 定义控制台应用程序的入口点。 // #include "stdafx.h" #include <winsock2.h> #pragma comment(lib, "ws2_32.lib") #include <iostream> using namespace std; // 单句柄数据 typedef struct tagPER_HANDLE_DATA { SOCKET Socket; SOCKADDR_STORAGE ClientAddr; // 将和这个句柄关联的其他有用信息,尽管放在这里面吧 }PER_HANDLE_DATA, *LPPER_HANDLE_DATA; // 但I/O 操作数据 typedef struct tagPER_IO_DATA { OVERLAPPED Overlapped; WSABUF DataBuf; char buffer[1024]; int BufferLen; int OperationType; // 可以作为读写的标志,为简单,我忽略了 }PER_IO_DATA, *LPPER_IO_DATA; //线程函数 DWORD WINAPI ServerWorkerThread(LPVOID lpParam); DWORD WINAPI ServerWorkerThread(LPVOID lpParam) { HANDLE CompletionPort = (HANDLE)lpParam; DWORD BytesTransferred; LPOVERLAPPED lpOverlapped; LPPER_HANDLE_DATA PerHandleData = NULL; LPPER_IO_DATA PerIoData = NULL; DWORD SendBytes; DWORD RecvBytes; DWORD Flags; BOOL bRet = FALSE; while (TRUE) //无限循环 { bRet = GetQueuedCompletionStatus(CompletionPort,&BytesTransferred,(PULONG_PTR)&PerHandleData,(LPOVERLAPPED*)&lpOverlapped,INFINITE); // 检查成功的返回,这儿要注意使用这个宏CONTAINING_RECORD PerIoData = (LPPER_IO_DATA)CONTAINING_RECORD(lpOverlapped,PER_IO_DATA,Overlapped); // 先检查一下,看看是否在套接字上已有错误发生 if (0 == BytesTransferred) { closesocket(PerHandleData->Socket); GlobalFree(PerHandleData); GlobalFree(PerIoData); continue; } // 数据处理 char sendBuf[100]; sprintf_s(sendBuf,"Welcome %s to %d %d \n",PerIoData->DataBuf.buf,PerHandleData->Socket,::GetCurrentThreadId()); send(PerHandleData->Socket,sendBuf,strlen(sendBuf)+1,0); //WSASend() /*DataBuf.len = DATA_BUFSIZE; DataBuf.buf = buffer; for(i=0; i < SEND_COUNT ;i++) { WSASend(PerHandleData->Socket, &DataBuf, 1, &SendBytes, 0, &SendOverlapped, NULL); */ // 成功了!!!这儿就收到了来自客户端的数据 cout << PerIoData->DataBuf.buf << ::GetCurrentThreadId() << endl; Flags = 0; // 为下一个重叠调用建立单I/O 操作数据 ZeroMemory(&(PerIoData->Overlapped), sizeof(OVERLAPPED)); PerIoData->DataBuf.len = 1024; PerIoData->DataBuf.buf = PerIoData->buffer; PerIoData->OperationType = 0; // read WSARecv(PerHandleData->Socket,&(PerIoData->DataBuf),1,&RecvBytes,&Flags,&(PerIoData->Overlapped),NULL); } return 0; } int main(int argc, _TCHAR* argv[]) { //头部申明 HANDLE CompletionPort; WSADATA wsd; SYSTEM_INFO SystemInfo; SOCKADDR_IN InternetAddr; SOCKET Listen; // 加载WinSock2.2 WSAStartup(MAKEWORD(2, 2), &wsd); // 1.创建一个I/O 完成端口 CompletionPort = CreateIoCompletionPort(INVALID_HANDLE_VALUE,NULL,0,0); // 2.确定系统中有多少个处理器 GetSystemInfo(&SystemInfo); // 3.基于系统中可用的处理器数量创建工作器线程 for (int i = 0; i < int(SystemInfo.dwNumberOfProcessors * 2); ++i) { HANDLE ThreadHandle; // 创建一个服务器的工作器线程,并将完成端口传递到该线程 ThreadHandle = CreateThread(NULL,0,ServerWorkerThread,CompletionPort,0,NULL); CloseHandle(ThreadHandle); } // 4.创建一个监听套接字,以下的套路都是固定的。 Listen = WSASocket(AF_INET,SOCK_STREAM,0,NULL,0,WSA_FLAG_OVERLAPPED); //绑定和监听 InternetAddr.sin_family = PF_INET; InternetAddr.sin_port = htons(6000); InternetAddr.sin_addr.s_addr = htonl(INADDR_ANY); bind(Listen, (SOCKADDR*)&InternetAddr, sizeof(InternetAddr)); listen(Listen, 5); //无限循环 BOOL b = TRUE; while (b) { PER_HANDLE_DATA * PerHandleData = NULL; SOCKADDR_IN saRemote; SOCKET Accept; int RemoteLen; // 5.接收连接,并分配完成端口,这儿可以用AcceptEx 来代替,以创 // 建可伸缩的Winsock 应用程序。 RemoteLen = sizeof(saRemote); Accept = accept(Listen, (SOCKADDR*)&saRemote, &RemoteLen); // 6.创建用来和套接字关联的单句柄数据信息结构 PerHandleData = (LPPER_HANDLE_DATA)GlobalAlloc(GPTR,sizeof(PER_HANDLE_DATA)); //cout << "Socket number " << Accept << " connected" << endl; PerHandleData->Socket = Accept; memcpy(&PerHandleData->ClientAddr, &saRemote, RemoteLen); // 7.将接受套接字和完成端口关联起来 CreateIoCompletionPort((HANDLE)Accept,CompletionPort,(DWORD)PerHandleData,0); // 开始在接受套接字上处理I/O // 使用重叠I/O 机制,在新建的套接字上投递一个或多个异步 // WSARecv 或 WSASend 请求。这些I/O 请求完成后,工作者线程 // 会为I/O 请求提供服务,之后就可以坐享其成了 static int const DATA_BUFSIZE = 4096; DWORD RecvBytes = 0; DWORD Flags = 0; // 单I/O 操作数据 LPPER_IO_DATA PerIoData = NULL; PerIoData = (LPPER_IO_DATA)GlobalAlloc(GPTR, sizeof(PER_IO_DATA)); ZeroMemory(&(PerIoData->Overlapped), sizeof(OVERLAPPED)); PerIoData->DataBuf.len = 1024; PerIoData->DataBuf.buf = PerIoData->buffer; PerIoData->OperationType = 0; // read WSARecv(PerHandleData->Socket,&(PerIoData->DataBuf),1,&RecvBytes,&Flags,&(PerIoData->Overlapped),NULL); } return 0; }