int
main(int argc, char *argv[])
{
struct sockaddr_in servaddr;
int sockfd, len;
if(argc != 2){
fprintf(stderr, "usage: ./a.out ip");
exit(1);
}
if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0){
perror("socket");
exit(1);
}
memset(&servaddr, 0,sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(8888);
inet_pton(AF_INET, argv[1], &servaddr.sin_addr);
len = sizeof(servaddr);
udp_cli(stdin, sockfd, (struct sockaddr *)&servaddr, len);
exit(0);
}
int main(int argc , char** argv)
{
int sockfd;
struct sockaddr_in clientaddr;
if(argc!= 2)
return -1;
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
clientaddr.sin_family = AF_INET;
clientaddr.sin_port = htons(7);
inet_pton(AF_INET, argv[1], &clientaddr.sin_addr);
udp_cli(stdin, sockfd, (struct sockaddr *)&clientaddr, sizeof(clientaddr));
return 0;
}
