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 ;

 }