udp.rar_Server_The Client_udp server

#include<stdio.h> #include<sys/socket.h> #include<netinet/in.h> #include<string.h> #include<stdlib.h> #include<errno.h> #include<sys/select.h> #include<sys/time.h> #include<sys/uio.h> #include<math.h> #include <unistd.h> #include <sys/io.h> #define kDATA_REG (0x0378) #define kSTAT_REG (DATA_REG + 1) #define kCONT_REG (DATA_REG + 2) #define MAXLINE 100 void parra(char *str) { int i; if (ioperm(kDATA_REG, 1, 1)) { printf("ioperm(%x) failed.\nYou must be root!\n", kDATA_REG); exit(1); } if(strcmp("MOTAR1",str)==0) { outb(1, kDATA_REG); fputs(str,stdout); sleep(1); } else if(strcmp("MOTAR2",str)==0) { outb(2, kDATA_REG); sleep(1); } else if(strcmp("MOTAR3",str)==0) { outb(3, kDATA_REG); sleep(1); } else if(strcmp("MOTAR4",str)==0) { outb(4, kDATA_REG); sleep(1); } else if(strcmp("MOTAR5",str)==0) { outb(5, kDATA_REG); sleep(1); } else if(strcmp("MOTAR6",str)==0) { outb(6, kDATA_REG); sleep(1); } else if(strcmp("MOTAR7",str)==0) { outb(7, kDATA_REG); sleep(1); } else outb(0, kDATA_REG); } void dg_cli(FILE* fp, int sockfd, const struct sockaddr* pservaddr, socklen_t serlen) { int n; char sendline[MAXLINE], recvline[MAXLINE+1]; n=write(sockfd,"PASSWORD",sizeof("PASSWORD")); if(n<0) { printf("ERROR IN WRITNG %d",n); exit(1); } n=read(sockfd,sendline,sizeof(sendline)); if(n<0) { printf("ERROR"); exit(1); } n=0; while(1) { n=read(sockfd,recvline,MAXLINE); if(n<0) { printf("ERROR"); exit(1); } printf("%s\n",recvline); if(strcmp("QUIT",recvline)!=0) { parra(recvline); } else exit(0); n=0; } } int main(int argc, char** argv) { /* client */ printf("\n UDP CLIENT"); int sockfd; struct sockaddr_in servaddr; if(argc != 2) { printf("\n Usage: udp_client <IP Address>"); exit(0); } bzero(&servaddr,sizeof(servaddr)); servaddr.sin_family= AF_INET; servaddr.sin_port = htons(8977); inet_pton(AF_INET,argv[1],&servaddr.sin_addr); sockfd = socket(AF_INET,SOCK_DGRAM,0); int j=connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr)); if(j<0) { printf("\nERROR IN UDP CONNECT %d",j); exit(1); } dg_cli(stdin,sockfd,(struct sockaddr*)&servaddr,sizeof(servaddr)); return 0; }