/*
 * client by getaddrinfo (multi-protocol support)
 * by Jun-ichiro itojun Hagino.  in public domain.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>

int main __P((int, char **));

int
main(argc, argv)
	int argc;
	char **argv;
{
	struct addrinfo hints, *res, *res0;
	ssize_t l;
	int s;
	char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
	char buf[1024];
	int error;

	/* check the number of arguments */
	if (argc != 3) {
		fprintf(stderr, "usage: test host port\n");
		exit(1);
		/*NOTREACHED*/
	}

	/* resolve address/port into sockaddr */
	memset(&hints, 0, sizeof(hints));
	hints.ai_family = AF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	error = getaddrinfo(argv[1], argv[2], &hints, &res0);
	if (error) {
		fprintf(stderr, "%s %s: %s\n", argv[1], argv[1],
		    gai_strerror(error));
		exit(1);
		/*NOTREACHED*/
	}

	/* try all the sockaddrs until connection goes successful */
	for (res = res0; res; res = res->ai_next) {
		error = getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
		    sizeof(hbuf), sbuf, sizeof(sbuf),
		    NI_NUMERICHOST | NI_NUMERICSERV);
		if (error) {
			fprintf(stderr, "%s %s: %s\n", argv[1], argv[1],
			    gai_strerror(error));
			continue;
		}
		fprintf(stderr, "trying %s port %s\n", hbuf, sbuf);

		s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
		if (s < 0)
			continue;

		if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
			close(s);
			s = -1;
			continue;
		}

		while ((l = read(s, buf, sizeof(buf))) > 0)
			write(STDOUT_FILENO, buf, l);
		close(s);

		exit(0);
		/*NOTREACHED*/
	}

	fprintf(stderr, "test: no destination to connect to\n");
	exit(1);
	/*NOTREACHED*/
}