📄 server.c
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#include<sys/types.h>#include<sys/socket.h>#include<stdio.h>#include<arpa/inet.h>void main(int argc,char**argv){ int listenfd; int clientfd; struct sockaddr_in svrsockaddr,cltsockaddr; char buffer[1024]; int addrlen,n;/*½¨Á¢ÇãÌýsocket*/listenfd=socket(AF_INET,SOCK_STREAM,0);if(listenfd<0){fprintf(stderr,"socket error!\n");exit(1);}/*¸ø½á¹¹sockadd_in·öÖ²*/memset(&svrsockaddr,0,sizeof(struct sockaddr_in));svrsockaddr.sin_family=AF_INET;svrsockaddr.sin_addr.s_addr=htonl(INADDR_ANY);svrsockaddr.sin_port=htons(3333);/*µØÖ·°ó¶¨*/if(bind(listenfd,(struct sockaddr_in*)&svrsockaddr,sizeof(struct sockaddr_in))<0){fprintf(stderr,"bind error!\n");exit(2);}/*ÇãÌýÁ¬½Ó*/listen(listenfd,5);addrlen=sizeof(struct sockaddr_in);while(1){clientfd=accept(listenfd,(struct sockaddr_in*)(&cltsockaddr),&addrlen);/*ÓÐÁ¬½ÓÀ´*/printf("Client add:%s%d\n",inet_ntoa(cltsockaddr.sin_addr),ntohs(cltsockaddr.sin_port));/*ºÍÁ¬½ÓµÄ¿Í»§¶Î½½øÐÐͨÐÅ*/ while((n=read(clientfd,buffer,1024))>0){buffer[n]=0;printf("client sent:%s",buffer);write(clientfd,buffer,n);}if(n<0){fprintf(stderr,"read error!\n");exit(3);}printf("client %s closed!\n",inet_ntoa(cltsockaddr.sin_addr));}close(listenfd);}
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