#include <sys/socket.h>

#include <netinet/in.h>

#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>

#include <unistd.h>

#define HOST "192.168.0.1"
#define PORT 22

void handler(int);

int main(int argc, char **argv)
{
	struct sockaddr_in saddr;
	int ret;
	int fd;
	int i;
	char buf[BUFSIZ];
	int val;
	int c;
	unsigned short port = PORT;
	size_t len;
	char *host = HOST;

	val = 0;
	len = sizeof(val);

	while ((c = getopt(argc, argv, "h:p:")) != -1) {
		switch (c) {
			case 'h':
				host = strdup(optarg);
				break;
			case 'p':
				port = atoi(optarg);
				break;
			default:
				break;
		}
	}
	
	memset(&saddr, 0, sizeof(struct sockaddr_in));

	saddr.sin_family = AF_INET;
	saddr.sin_port   = htons(port);
	saddr.sin_addr.s_addr = inet_addr(host);

	fd = socket(AF_INET, SOCK_STREAM, 0);

	if (fd < 0) {
		printf("socket\n");
		exit(1);
	}

	val = fcntl(fd, F_GETFL);

	if (val < 0) {
		printf("fcntl get\n");
		exit(1);
	}

	ret = fcntl(fd, F_SETFL, val | O_NONBLOCK);


	if (ret < 0) {
		printf("fcntl set\n");	
		exit(1);
	}



	for (i = 1 ;; i++) {

		errno = 0;

		printf("entering %d connect\n", i);
		ret = connect(fd, (struct sockaddr *)&saddr, 
			sizeof(struct sockaddr_in));

		printf("leaving %d connect, error %d msg = %s\n",
			i, errno, strerror(errno));

		if (errno == EISCONN)
			break;
	
	}

	close(fd);

	exit(0);
}

void handler(int signo)
{

	alarm(1);
	printf("in signal hander\n");
	return ;

}