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服务端：
//s_unix.c#include#include #include #include #define UNIX_DOMAIN "/tmp/UNIX.domain"int main(void){ socklen_t clt_addr_len; int listen_fd; int com_fd; int ret; int i; static char recv_buf[1024]; int len; struct sockaddr_un clt_addr; struct sockaddr_un srv_addr; listen_fd=socket(PF_UNIX,SOCK_STREAM,0); if(listen_fd<0) { perror("cannot create communication socket"); return 1; } //set server addr_param srv_addr.sun_family=AF_UNIX; strncpy(srv_addr.sun_path,UNIX_DOMAIN,sizeof(srv_addr.sun_path)-1); unlink(UNIX_DOMAIN); //bind sockfd & addr ret=bind(listen_fd,(struct sockaddr*)&srv_addr,sizeof(srv_addr)); if(ret==-1) { perror("cannot bind server socket"); close(listen_fd); unlink(UNIX_DOMAIN); return 1; } //listen sockfd ret=listen(listen_fd,1); if(ret==-1) { perror("cannot listen the client connect request"); close(listen_fd); unlink(UNIX_DOMAIN); return 1; } //have connect request use accept len=sizeof(clt_addr); com_fd=accept(listen_fd,(struct sockaddr*)&clt_addr,&len); if(com_fd<0) { perror("cannot accept client connect request"); close(listen_fd); unlink(UNIX_DOMAIN); return 1; } //read and printf sent client info printf("/n=====info=====/n"); for(i=0;i<4;i++) { memset(recv_buf,0,1024); int num=read(com_fd,recv_buf,sizeof(recv_buf)); printf("Message from client (%d)) :%s/n",num,recv_buf); } close(com_fd); close(listen_fd); unlink(UNIX_DOMAIN); return 0;}
客户端
//c_unix.c#include#include #include #include #define UNIX_DOMAIN "/tmp/UNIX.domain"int main(void){ int connect_fd; int ret; char snd_buf[1024]; int i; static struct sockaddr_un srv_addr;//creat unix socket connect_fd=socket(PF_UNIX,SOCK_STREAM,0); if(connect_fd<0) { perror("cannot create communication socket"); return 1; } srv_addr.sun_family=AF_UNIX; strcpy(srv_addr.sun_path,UNIX_DOMAIN);//connect server ret=connect(connect_fd,(struct sockaddr*)&srv_addr,sizeof(srv_addr)); if(ret==-1) { perror("cannot connect to the server"); close(connect_fd); return 1; } memset(snd_buf,0,1024); strcpy(snd_buf,"message from client");//send info server for(i=0;i<4;i++) write(connect_fd,snd_buf,sizeof(snd_buf)); close(connect_fd);
服务端
#include#include #include #include #include /* See NOTES */#include #include #include #define SIZE 100int main(int argc, char **argv){ int sock_fd; struct sockaddr_in sin; //创建套接字 if( (sock_fd = socket(AF_INET,SOCK_STREAM,0)) < 0){ perror("socket"); exit(1); } //填充地址 bzero(&sin,sizeof(sin)); sin.sin_family = AF_INET; if(argc != 3){ sin.sin_port = htons(8888); sin.sin_addr.s_addr = inet_addr("192.168.7.5"); }else{ sin.sin_port = htons(atoi(argv[1])); sin.sin_addr.s_addr = inet_addr(argv[2]); } if(connect(sock_fd,(struct sockaddr*)&sin,sizeof(sin)) < 0){ perror("connect"); exit(1); } //和客户端进行通信 char buf[SIZE]; while(1){ fgets(buf,SIZE,stdin); write(sock_fd,buf,strlen(buf)); if(strncmp(buf,"quit",4) == 0) break; } close(sock_fd); return 0;}
客户端
#include#include #include #include #include /* See NOTES */#include #include #include #define SIZE 100int main(int argc, char **argv){ int sock_fd,conn_fd; struct sockaddr_in sin,cin; //创建套接字 if( (sock_fd = socket(AF_INET,SOCK_STREAM,0)) < 0){ perror("socket"); exit(1); } //填充地址 bzero(&sin,sizeof(sin)); sin.sin_family = AF_INET; if(argc != 3){ sin.sin_port = htons(8888); sin.sin_addr.s_addr = inet_addr("192.168.7.5"); }else{ sin.sin_port = htons(atoi(argv[1])); sin.sin_addr.s_addr = inet_addr(argv[2]); } //绑定地址 if(bind(sock_fd,(struct sockaddr*)&sin,sizeof(sin)) < 0){ perror("bind"); exit(1); } //监听套接字 if(listen(sock_fd,8) < 0){ perror("listen"); exit(1); } //等待接收链接,使进程阻塞，直到有新的客户端请求链接为止 bzero(&cin,sizeof(cin)); socklen_t len = sizeof(cin); printf("listen....\n"); if( (conn_fd = accept(sock_fd,(struct sockaddr*)&cin,&len)) < 0){ perror("accept"); exit(1); } printf("客户端%s链接成功!\n",inet_ntoa(cin.sin_addr)); //和客户端进行通信 char buf[SIZE]; int ret; while(1){ bzero(buf,SIZE); if( (ret = read(conn_fd,buf,SIZE)) < 0){ perror("read"); exit(1); }else if( ret == 0){ printf("客户端已断开\n"); break; }else{ if(strncmp(buf,"quit",4) == 0) break; printf("%s",buf); } } close(sock_fd); close(conn_fd); return 0;}
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