#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <mes2.h>

static int strtoip(char *ptr, int *error) {
	int		i, j, s;
	unsigned int	ip, n;

	*error = 0;
	ip = 0;
	s = 0;
	for(i = 0;i < 4;i++) {
		n = 0;
		for(j = 0;j < 3;j++) {
			if(!isdigit(ptr[s])) {
				*error = -1;
				return 0;
			}
			n = n * 10;
			n += ptr[s++] - '0';
			if(ptr[s] == '.' || (ptr[s] <= ' ' && i == 3)) {
				break;
			}
		}
		s++;
		ip <<= 8;
		ip += n;
	}
	return ip;
}


int main(int argc, char **argv) {
	int		sk, n, ret, err, port;
	unsigned int	ip;
	struct sockaddr target;
	char	buf[64];

	if(argc != 3) {
		printf("option not found\r");
		return -1;
	}
	ip = strtoip(argv[1], &err);
	if(err == -1) {
		printf("Illegal format\r");
		return -1;
	}
	sscanf(argv[2], "%d", &port);
	sk = udp_socket();
	if(sk == -1) {
		__write(0, "open failed.\n", 13);
		return -1;
	}
	target.sin_port = port;
	target.sin_addr = ip;
	scanf("%63s", buf);
	sendto(sk, buf, strlen(buf), &target);
	udp_free(sk);
}