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#include <u.h>
#include <libc.h>
#include <ip.h>
void
usage(void)
{
fprint(2, "usage: %s [-x netmtpt]\n", argv0);
exits("usage");
}
void
main(int argc, char **argv)
{
int fd, cfd, n;
char buf[4096], data[128], devdir[40], net[32];
setnetmtpt(net, sizeof net, nil);
ARGBEGIN{
case 'x':
setnetmtpt(net, sizeof net, EARGF(usage()));
break;
}ARGEND;
sprint(data, "%s/udp!*!echo", net);
cfd = announce(data, devdir);
if(cfd < 0)
sysfatal("can't announce %s: %r", data);
if(fprint(cfd, "headers") < 0)
sysfatal("can't set header mode: %r");
sprint(data, "%s/data", devdir);
fd = open(data, ORDWR);
if(fd < 0)
sysfatal("open %s: %r", data);
while ((n = read(fd, buf, sizeof buf)) > 0)
write(fd, buf, n);
if (n < 0)
sysfatal("error reading: %r");
exits(0);
}
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