#include <stdio.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>

#define host "192.168.2.3"
#define port 8888

int f(struct in_addr *saddr, const char *data, const size_t data_len) {
	int sockfd;
	struct sockaddr_in addr;
	sockfd = socket(AF_INET, SOCK_STREAM, 0);
	if (sockfd < -1) {
		perror("socket");
		return 1;
	}
	memset(&addr, 0, sizeof(addr));
	addr.sin_family = AF_INET;
	addr.sin_port = htons(port);
	addr.sin_addr = *saddr;
	if (connect(sockfd, (struct sockaddr *)&addr, sizeof(addr))) {
		perror("connect");
		return 1;
	}
	write(sockfd, data, data_len);
	close(sockfd);
	return 0;
}
int main(int argc, char **argv) {
	struct in_addr saddr;
	const char *data = "GET / HTTP/1.0\r\n\r\n";
	const size_t data_len = strlen(data);
	if (argc != 2) {
		fprintf(stderr, "Usage: %s count\n", *argv);
		return 1;
	}
	if (!inet_aton(host, &saddr)) {
		perror("inet_aton");
		return 1;
	}
	int count = atoi(argv[1]);
	const char dot = '.';
	unsigned fails;
	while (--count >= 0) {
		if (!(count % 10)) {
			write(STDOUT_FILENO, &dot, sizeof(dot));
		}
		if (f(&saddr, data, data_len)) {
			if (++fails > 10) break;
		} else
			fails /= 2;
	}
	putchar('\n');
	return 0;
}