服务器端：
1 #include <WINSOCK2.H> 2 #include <stdio.h> 3 #pragma comment(lib,"ws2_32.lib") 4 int main(int argc,char **argv) 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,等待连接！ "); 15 } 16 else 17 { 18 printf("ERROR:嵌套字未打开!"); 19 return 1; 20 } 21 //进一步绑定套接字 22 SOCKET serSocket=socket(AF_INET,SOCK_STREAM,0);//创建了可识别套接字 23 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,"hello, %s !",inet_ntoa(clientsocket.sin_addr));//找对对应的IP并且将这行字打印到那里 44 printf("Send:%s ",sendBuf); 45 send(serConn,sendBuf,strlen(sendBuf)+1,0); 46 47 char receiveBuf[100];//接收 48 recv(serConn,receiveBuf,sizeof(receiveBuf),0); 49 printf("recv:%s ",receiveBuf); 50 51 closesocket(serConn);//关闭 52 WSACleanup();//释放资源的操作 53 return 0; 54 } 55 return 1; 56 }
客户机端：
1 #include <WINSOCK2.H> 2 #include <stdio.h> 3 #pragma comment(lib,"ws2_32.lib") 4 int main(int argc,char **argv) 5 { 6 int err; 7 WORD versionRequired; 8 WSADATA wsaData; 9 versionRequired=MAKEWORD(1,1); 10 err=WSAStartup(versionRequired,&wsaData);//协议库的版本信息 11 if (!err) { 12 printf("客户端嵌套字已经打开! "); 13 } else { 14 printf("ERROR:客户端的嵌套字打开失败! "); 15 return 1;//结束 16 } 17 SOCKET clientSocket=socket(AF_INET,SOCK_STREAM,0); 18 19 SOCKADDR_IN clientsock_in; 20 clientsock_in.sin_addr.S_un.S_addr=inet_addr("192.168.1.3"); 21 clientsock_in.sin_family=AF_INET; 22 clientsock_in.sin_port=htons(6000); 23 24 //bind(clientSocket,(SOCKADDR*)&clientsock_in,strlen(SOCKADDR));//注意第三个参数 25 //listen(clientSocket,5); 26 connect(clientSocket,(SOCKADDR*)&clientsock_in,sizeof(SOCKADDR));//开始连接 27 char receiveBuf[100]; 28 if(1) { 29 30 printf("Send:%s ","hello,this is client"); 31 send(clientSocket,"hello,this is client",strlen("hello,this is client")+1,0); 32 33 recv(clientSocket,receiveBuf,101,0); 34 printf("Recv:%s ",receiveBuf); 35 36 closesocket(clientSocket); 37 WSACleanup(); 38 } 39 return 0; 40 }
simple "hello world" program:
Client:
1 #include<stdio.h> 2 #include<winsock2.h> 3 #pragma comment (lib,"ws2_32") 4 int main(int argc,char *argv[]) 5 { 6 7 WSADATA wsaData; 8 WSAStartup(MAKEWORD(2,2),&wsaData); 9 10 SOCKET s=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP); 11 12 sockaddr_in sockaddr; 13 sockaddr.sin_family=PF_INET; 14 sockaddr.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); 15 sockaddr.sin_port=htons(827); 16 17 connect(s,(SOCKADDR*)&sockaddr,sizeof(SOCKADDR)); 18 19 char Buffer[MAXBYTE]={0}; 20 recv(s,Buffer,MAXBYTE,NULL); 21 printf("Buffer = %s ",Buffer); 22 closesocket(s); 23 getchar(); 24 WSACleanup(); 25 return 0; 26 27 }
Server:
1 #include<winsock2.h> 2 #pragma comment (lib,"ws2_32") 3 int main(int argc,char *argv[]) 4 { 5 WSADATA wsaData; 6 WSAStartup(MAKEWORD(2,2),&wsaData); 7 8 SOCKET s=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP); 9 10 sockaddr_in sockaddr; 11 sockaddr.sin_family=PF_INET; 12 sockaddr.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); 13 sockaddr.sin_port=htons(827); 14 15 bind(s,(SOCKADDR*)&sockaddr,sizeof(SOCKADDR)); 16 listen(s,1); 17 SOCKADDR clientAddr; 18 int nSize=sizeof(SOCKADDR); 19 SOCKET clientSock; 20 clientSock=accept(s,(SOCKADDR*)&clientAddr,&nSize); 21 22 send(clientSock,"hello client ",strlen("hello client ")+sizeof(char),NULL); 23 closesocket(clientSock); 24 closesocket(s); 25 26 WSACleanup(); 27 return 0; 28 }