基于windows下socket API的实现

/****************************************** ** 文件名称：socketserver.cpp ** ** 功 能：服务器程序 ** ** 作 者：唐天明 ** ** 日 期：2008-11-14 ** ******************************************/ #include <iostream> using namespace std; #include <winsock2.h> #pragma comment( lib, "ws2_32.lib" ) const int serverport = 4444; //定义服务器端口 const int maxsize = 100; //定义每次最大传输量 const char * addr_ip = "192.168.17.31"; int main() { int serversockfd; //定义描述符 int clintsockfd; char buf[maxsize]; //定义缓存区 int recvflag,sendflag; //定义接收和发送标志 sockaddr_in serversocket; //定义服务器socket sockaddr_in clintsocket; //定义客户端socket WSADATA wsadata; int sin_size; //初始化库 if (WSAStartup(MAKEWORD(1, 1),&wsadata)!=0) { cout <<"初始化error" <<endl; WSACleanup(); exit(0); } else { cout <<"初始化成功" <<endl; } //创建套接字并初始化 if ((serversockfd = socket(AF_INET,SOCK_STREAM,0))==INVALID_SOCKET) { cout <<"创建套接字失败！！" <<endl; WSACleanup(); exit(0); } else { cout <<"创建套接字成功！！" <<endl; } serversocket.sin_family = AF_INET; serversocket.sin_port = htons(serverport); serversocket.sin_addr.S_un.S_addr = INADDR_ANY; //memcpy(&serversocket.sin_addr,&serversocket, sizeof(serversocket)); memset( & ( serversocket.sin_zero ), 0, sizeof( serversocket.sin_zero )); //绑定 if (bind(serversockfd,(struct sockaddr *)&serversocket,sizeof( struct sockaddr))==-1) { cout <<"绑定失败！！" <<endl; WSACleanup(); exit(0); } else { cout <<"绑定成功！！" <<endl; } //listen调用 if (listen(serversockfd,10)==-1) { cout <<"listen 调用失败！！"<<endl; WSACleanup(); exit(0); } else { cout <<"listen 调用成功！！"<<endl; } //调用accept接收 sin_size = sizeof( struct sockaddr_in ); clintsockfd = accept(serversockfd,( struct sockaddr * )&clintsocket,&sin_size); if (clintsockfd==-1) { cout <<"accept 调用失败！！" <<endl; WSACleanup(); exit(0); } else { cout <<"accept 调用成功！！" <<endl; } char * aaa; //发送消息 sendflag = send(clintsockfd,"服务器发送数据了。",100,0); if (sendflag==-1) { cout <<"服务器发送失败！" <<endl; // WSACleanup(); // exit(0); } else { cout <<"服务器发送成功！！" <<endl; } //接收信息 recvflag = recv(clintsockfd,buf,maxsize,0); if (recvflag==-1) { cout <<"服务器接受失败！！" <<endl; // WSACleanup(); // exit(0); } else { cout <<"服务器接收成功，内容："<<buf <<endl; } closesocket(clintsockfd); WSACleanup(); return 0; }