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Winsocket套接字#include "winsock2.h"                                                 //引用头文件#pragma comment(lib,"ws2_32.lib")                                     //链接库文件WSDATA wsd;                                                           //定义WSADATA对象WSAStartup(MAKEWORD(2,2),&wsd);                                       //初始化套接字int WSAStartup(WORD wVersionRequested,LPWSADATA IpWSAData);           //初始化lib链接库SOCKET socket(int af,int type,int protocol);                          //创建套接字int bin(SOCKET s,const struct sockaddr FAR* name,int namelen);        //绑定地址和端口，成功返回0int listen(SOCKET s,int backlog);                                     //监听客户端SOCKET accept(SOCKET s,struct sockaddr FAR* addr int FAR* addlen);    //接受客户端连接，返回一个新的套接字int closesocket(SOCKET s);                                            //关闭套接字int connect(SOCKET s,const struct sockaddr FAR* name,int namelen);    //发送连接请求int recv(SOCKET s,char FAR* buf,int len,int flags);                   //接收数据int send(SOCKET s,const char FAR* buf,int len,int flags);             //发送数据int select(int nfds,fd_set FAR* readfds,fd_set FAR* writefds,fd_set FAR* writefds,fd_set FAR* exceptfds,const struct timeval FAR*  timeout);   //检查一个或多个套接字是否可读可写有错误int WSACleanup(void);                                                 //释放lib库资源int WSAAsyncSelect(SOCKET s,HWND hWnd,unsigned int wMsg,long IEvent); //将网络中发生的事件关联到窗口的某个消息中int ioctlsocket(SOCKET s,long cmd,u_long FAR* argp);                  //设置套接字IO模式

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