C++中socket编程
原文:http://blog.csdn.net/cuiran/article/details/5854794
Server端
1 #include <WINSOCK2.H> 2 #include <stdio.h> 3 #pragma comment(lib,"ws2_32.lib") 4 void main() 5 { 6 //创建套接字 7 WORD myVersionRequest; 8 WSADATA wsaData; 9 myVersionRequest=MAKEWORD(1,1); 10 int err; 11 err=WSAStartup(myVersionRequest,&wsaData); 12 if (!err) 13 { 14 printf("已打开套接字/n"); 15 16 } 17 else 18 { 19 //进一步绑定套接字 20 printf("嵌套字未打开!"); 21 return; 22 } 23 SOCKET serSocket=socket(AF_INET,SOCK_STREAM,0);//创建了可识别套接字 24 //需要绑定的参数 25 SOCKADDR_IN addr; 26 addr.sin_family=AF_INET; 27 addr.sin_addr.S_un.S_addr=htonl(INADDR_ANY);//ip地址 28 addr.sin_port=htons(6000);//绑定端口 29 30 bind(serSocket,(SOCKADDR*)&addr,sizeof(SOCKADDR));//绑定完成 31 listen(serSocket,5);//其中第二个参数代表能够接收的最多的连接数 32 33 ////////////////////////////////////////////////////////////////////////// 34 //开始进行监听 35 ////////////////////////////////////////////////////////////////////////// 36 SOCKADDR_IN clientsocket; 37 int len=sizeof(SOCKADDR); 38 while (1) 39 { 40 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 41 char sendBuf[100]; 42 43 sprintf(sendBuf,"welcome %s to bejing",inet_ntoa(clientsocket.sin_addr));//找对对应的IP并且将这行字打印到那里 44 send(serConn,sendBuf,strlen(sendBuf)+1,0); 45 char receiveBuf[100];//接收 46 recv(serConn,receiveBuf,strlen(receiveBuf)+1,0); 47 printf("%s/n",receiveBuf); 48 closesocket(serConn);//关闭 49 WSACleanup();//释放资源的操作 50 } 51 }
Client端
1 #include <WINSOCK2.H> 2 #include <stdio.h> 3 #pragma comment(lib,"ws2_32.lib") 4 5 void main() 6 { 7 int err; 8 WORD versionRequired; 9 WSADATA wsaData; 10 versionRequired=MAKEWORD(1,1); 11 err=WSAStartup(versionRequired,&wsaData);//协议库的版本信息 12 13 if (!err) 14 { 15 printf("客户端嵌套字已经打开!/n"); 16 } 17 else 18 { 19 printf("客户端的嵌套字打开失败!/n"); 20 return;//结束 21 } 22 SOCKET clientSocket=socket(AF_INET,SOCK_STREAM,0); 23 SOCKADDR_IN clientsock_in; 24 clientsock_in.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); 25 clientsock_in.sin_family=AF_INET; 26 clientsock_in.sin_port=htons(6000); 27 //bind(clientSocket,(SOCKADDR*)&clientsock_in,strlen(SOCKADDR));//注意第三个参数 28 //listen(clientSocket,5); 29 connect(clientSocket,(SOCKADDR*)&clientsock_in,sizeof(SOCKADDR));//开始连接 30 31 char receiveBuf[100]; 32 recv(clientSocket,receiveBuf,101,0); 33 printf("%s/n",receiveBuf); 34 35 send(clientSocket,"hello,this is client",strlen("hello,this is client")+1,0); 36 closesocket(clientSocket); 37 WSACleanup(); 38 }
