43 lines
789 B
C
43 lines
789 B
C
#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);
|
|
}
|