winSocket数据传输

服务器端：

 #include <WINSOCK2.H>
 #include <stdio.h>
 #pragma comment(lib,"ws2_32.lib")
 int main(int argc,char **argv)
 {
     //创建套接字
     WORD myVersionRequest;
     WSADATA wsaData;
     myVersionRequest=MAKEWORD(,);
     int err;
     err=WSAStartup(myVersionRequest,&wsaData);
     if (!err)
     {
         printf("已打开套接字,等待连接！\n");
     }
     else
     {
         printf("ERROR:嵌套字未打开!");
         return ;
     }
     //进一步绑定套接字
     SOCKET serSocket=socket(AF_INET,SOCK_STREAM,);//创建了可识别套接字

     //需要绑定的参数
     SOCKADDR_IN addr;
     addr.sin_family=AF_INET;
     addr.sin_addr.S_un.S_addr=htonl(INADDR_ANY);//ip地址
     addr.sin_port=htons();//绑定端口

     bind(serSocket,(SOCKADDR*)&addr,sizeof(SOCKADDR));//绑定完成
     listen(serSocket,);//其中第二个参数代表能够接收的最多的连接数

     //////////////////////////////////////////////////////////////////////////
     //开始进行监听
     //////////////////////////////////////////////////////////////////////////
     SOCKADDR_IN clientsocket;
     int len=sizeof(SOCKADDR);
     while ()
     {
         SOCKET serConn=accept(serSocket,(SOCKADDR*)&clientsocket,&len);//如果这里不是accept而是conection的话。。就会不断的监听
         char sendBuf[];

         sprintf(sendBuf,"hello, %s !",inet_ntoa(clientsocket.sin_addr));//找对对应的IP并且将这行字打印到那里
         printf("Send:%s\n",sendBuf);
         send(serConn,sendBuf,strlen(sendBuf)+,);

         char receiveBuf[];//接收
         recv(serConn,receiveBuf,sizeof(receiveBuf),);
         printf("recv:%s\n",receiveBuf);

         closesocket(serConn);//关闭
         WSACleanup();//释放资源的操作
         return ;
     }
     return ;
 }

客户机端：

 #include <WINSOCK2.H>
 #include <stdio.h>
 #pragma comment(lib,"ws2_32.lib")
 int main(int argc,char **argv)
 {
     int err;
     WORD versionRequired;
     WSADATA wsaData;
     versionRequired=MAKEWORD(,);
     err=WSAStartup(versionRequired,&wsaData);//协议库的版本信息
     if (!err)    {
         printf("客户端嵌套字已经打开!\n");
     } else {
         printf("ERROR:客户端的嵌套字打开失败!\n");
         return ;//结束
     }
     SOCKET clientSocket=socket(AF_INET,SOCK_STREAM,);

     SOCKADDR_IN clientsock_in;
     clientsock_in.sin_addr.S_un.S_addr=inet_addr("192.168.1.3");
     clientsock_in.sin_family=AF_INET;
     clientsock_in.sin_port=htons();

     //bind(clientSocket,(SOCKADDR*)&clientsock_in,strlen(SOCKADDR));//注意第三个参数
     //listen(clientSocket,5);
     connect(clientSocket,(SOCKADDR*)&clientsock_in,sizeof(SOCKADDR));//开始连接
     char receiveBuf[];
     if() {

         printf("Send:%s\n","hello,this is client");
         send(clientSocket,"hello,this is client",strlen("hello,this is client")+,);

         recv(clientSocket,receiveBuf,,);
         printf("Recv:%s\n",receiveBuf);

         closesocket(clientSocket);
         WSACleanup();
     }
     return ;
 }

simple "hello world" program:

Client:

 #include<stdio.h>
 #include<winsock2.h>
 #pragma comment (lib,"ws2_32")
 int main(int argc,char *argv[])
 {

     WSADATA wsaData;
     WSAStartup(MAKEWORD(,),&wsaData);

     SOCKET s=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);

     sockaddr_in sockaddr;
     sockaddr.sin_family=PF_INET;
     sockaddr.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
     sockaddr.sin_port=htons();

     connect(s,(SOCKADDR*)&sockaddr,sizeof(SOCKADDR));

     char Buffer[MAXBYTE]={};
     recv(s,Buffer,MAXBYTE,NULL);
     printf("Buffer = %s \r\n",Buffer);
     closesocket(s);
     getchar();
     WSACleanup();
     return ;

 }

Server:

 #include<winsock2.h>
 #pragma comment (lib,"ws2_32")
 int main(int argc,char *argv[])
 {
     WSADATA wsaData;
     WSAStartup(MAKEWORD(,),&wsaData);

     SOCKET s=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);

     sockaddr_in sockaddr;
     sockaddr.sin_family=PF_INET;
     sockaddr.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
     sockaddr.sin_port=htons();

     bind(s,(SOCKADDR*)&sockaddr,sizeof(SOCKADDR));
     listen(s,);
     SOCKADDR clientAddr;
     int nSize=sizeof(SOCKADDR);
     SOCKET clientSock;
     clientSock=accept(s,(SOCKADDR*)&clientAddr,&nSize);

     send(clientSock,"hello client \r\n",strlen("hello client \r\n")+sizeof(char),NULL);
     closesocket(clientSock);
     closesocket(s);

     WSACleanup();
     return ;
 }