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

int
findip(char *s, int len)
{
	Ipifc *ifc;
	Iplifc *l;

	fmtinstall('I', eipfmt);
	for(ifc = readipifc("/net", 0, 0); ifc; ifc = ifc->next)
		for(l = ifc->lifc; l; l = l->next)
			if(l->ip){
//				freeipifc(ifc);
				snprint(s, len, "udp!%I!8001", l->ip);
				return 0;
			}
//	freeipifc(ifc);
	return -1;
}

void
main(void)
{
	char buf[128], ds[64];
	int n, fd, len;

	if(findip(ds, sizeof ds) == -1)
		sysfatal("can't find my ip");
	if((fd = dial(ds, 0, 0, 0)) == -1)
		sysfatal("dial: %r");
	srand(time(0));
	len = sprint(buf, "Message to server%d", rand());
	if(write(fd, buf, len) != len)
		sysfatal("write: %r");
	if((n = read(fd, buf, sizeof buf)) == -1)
		sysfatal("read: %r");
	fprint(2, "read [%.*s]\n", n, buf);

	close(fd);
	exits("");
}