#include <u.h>
#include <libc.h>

static void
usage(void)
{
	print("usage: %s mcast-addr port\n", argv0);
	exits("usage");
}

void
main(int argc, char **argv)
{
	NetConnInfo *ncinfo;
	char buf[1024];
	int fd, cfd, n;

	ARGBEGIN{
	default:
		usage();
	}ARGEND;
	if(argc != 2)
		usage();
	fd = dial(netmkaddr(argv[0], "udp", argv[1]), 0, 0, &cfd);
	if(fd < 0)
		sysfatal("dial: %r");
	ncinfo = getnetconninfo(nil, fd);
	if(ncinfo == nil)
		sysfatal("getnetconninfo: %r");
	if(fprint(cfd, "addmulti %s %s", ncinfo->lsys, argv[0]) < 0)
		sysfatal("addmulti: %r");
	freenetconninfo(ncinfo);
	while((n = read(0, buf, sizeof(buf))) > 0)
		write(fd, buf, n);
	close(fd);
}