Windows Socket通信

/* *客户端程序*/#include <winsock2.h>#include <stdio.h>#include "string.h"#pragma comment(lib,"ws2_32.lib") //把ws2_32.lib加到Link页的连接库#define IP "127.0.0.1" //通信的IP地址#define PORT 15501 //通信的端口char *buf;#define N 20struct student{ char name[N]; char sex[N]; int age; char number[N]; char classes[N]; char major[N];}student;void message(){   int m ;   struct student *p  ;   p=(struct student *)malloc(sizeof(struct student));   while(1)   {    printf("Please input the message: /n");    printf("请输入学生姓名:");    scanf("%s",p->name);    printf("请输入性别:");    scanf("%s",p->sex);    printf("请输入年龄:");    scanf("%d",&p->age);    printf("请输入学号:");    scanf("%s",p->number);    printf("请输入班级:");    scanf("%s",p->classes);    printf("请输入专业 :");    scanf("%s",p->major);    buf = (char *)p;    m = getchar();    if(m == 10)    {     break;    }   }   } void send(){   WSADATA WSAData;   //加载套接字库   if(WSAStartup(MAKEWORD(2,0)/*指定加载的Winsock库的版本,2 表示主版本号;0 表示副版本号*/,&WSAData    /*返回值,指向WSADATA结构的指针*/)==SOCKET_ERROR)   {     printf("Socket initialize fail!/n");     return;   }   SOCKET sock;   if((sock=socket(AF_INET/*指定地址族*/,SOCK_STREAM/*制定Socket类型为产生流式套接字*/,0))==SOCKET_ERROR)   {     printf("Socket create fail!/n");     WSACleanup();     return;   }   struct sockaddr_in ClientAddr;   ClientAddr.sin_family=AF_INET;   ClientAddr.sin_port=htons(PORT);   ClientAddr.sin_addr.s_addr=inet_addr(IP);   if(connect(sock,(LPSOCKADDR)&ClientAddr/*设定连接的服务器端的地址信息*/,sizeof(ClientAddr))==SOCKET_ERROR)   {   //进行服务器连接     printf("Connect fail!/n");     closesocket(sock);     WSACleanup();     return;   }   send(sock/*已经建立连接的套接字*/,buf,2048,0); //向服务器发送数据   closesocket(sock);   WSACleanup();//释放应用程序加载套接字库分配的资源,终止对WinSock动态库的使用}void main(){   while(1)   {     message();     send();     if(buf[0]=='e' && buf[1]=='n' && buf[2]=='d')  {       printf("Program end./n");       return;      }   }}

 

/* *服务器端程序*/#include <stdio.h>#include <winsock2.h>#include <windows.h>#include <malloc.h>#pragma comment(lib,"ws2_32.lib") //把ws2_32.lib加到Link页的连接库#define IP "127.0.0.1" //通信的IP地址#define PORT 15501 //通信的端口#define ERROR 0#define N 20struct student{ char name[N]; char sex[N]; int age; char number[N]; char classes[N]; char major[N];}student;void main(){   WSADATA WSAData;   if(WSAStartup(MAKEWORD(2,0),&WSAData)==SOCKET_ERROR)   { //启动winsock     printf("Socket initialize fail!/n");     exit(1);   }   SOCKET sock;   if((sock=socket(AF_INET,SOCK_STREAM,0))==ERROR)   { //建立套接字     printf("Socket create!/n");     WSACleanup();     exit(1);   }   struct sockaddr_in ServerAddr;   ServerAddr.sin_family=AF_INET;   ServerAddr.sin_port=htons(PORT);   ServerAddr.sin_addr.s_addr=INADDR_ANY;  if(bind(sock,(LPSOCKADDR)&ServerAddr,sizeof(ServerAddr))==SOCKET_ERROR)   {    //对端口进行监听     printf("Bind fail!/n");     closesocket(sock);     WSACleanup();     exit(1);   }   printf("Socket port #%d/n",ntohs(ServerAddr.sin_port));   if(listen(sock,10)==SOCKET_ERROR)   {   //设置最大不被拒绝的请求数     printf("Listen fail!/n");     closesocket(sock);     WSACleanup();     exit(1);   }   SOCKET msgsock;   char buf[2048];   struct student *p;   p=(struct student *)malloc(sizeof(struct student));//申请一个动态存储区域，它的大小为sizeof(struct book)   while(1)   {     if((msgsock=accept(sock,(LPSOCKADDR)0,(int *)0))==INVALID_SOCKET)  { //接受客户端连接       printf("Accept fail!/n");       continue;     }     printf("Have client connected./n");     memset(buf,0,sizeof(buf));     recv(msgsock,buf,2048,0); //接收客户端数据     if(buf[0]=='e' && buf[1]=='n' && buf[2]=='d')  {       printf("Program end./n");       return;     } p = (struct student *)buf;    printf("name    = %s/n",p->name); printf("sex     = %s/n",p->sex); printf("age     = %d/n",p->age); printf("nuber   = %s/n",p->number); printf("classes = %s/n",p->classes); printf("major   = %s/n",p->major);      closesocket(msgsock);   }   closesocket(sock); //关闭套接字   WSACleanup(); //关闭winsock}