Windows网络编程总结

//面向连接协议
//服务器端
socket()->bind()->listen()->accept()->send()/recv()->closesocket()
//客户端
socket()->connet()->send/recv()->closesocket()

//面向非连接协议
//服务器端
socket()->bind()->sendto/recvfrom()->closesocket()
//客户端
socket()->sendto/recvfrom()->closefrom()

//Winsock库初始化
int WSAStartup(WORD wVersionRequested,LPWSADATA lpWSAData)  //第一个参数为Winsock版本号 目前常用版本号为2.2 第二个参数为一个指向WSADARA的指针

//Winsock库释放
int WSACleanup (void)

//初始化与释放Winsock库 代码示例
WORD wVersionRequested；
WSADATA wsaData；
int err；  wVersionRequested = MAKEWORD(2,2);

err =WSAStartup(wVersionRequested,&wsaData);
if(err!=0)
{
    return -1;
}
if(LOBYTE(wsaData.wVersion)!=2||HIBYTE(wsaData.wVersion)!=2)
{
    WSACleanup();
    return -1;
}

// ...
WSACleanup();