Huh?

Added with what headers?

By the way, if you send buttons exactly like this, then the server returns a "204 No Response" header:

     GET ?BUTTON=xxxxxxx;BUTTON=yyyyyyyy

or

     GET ?BUTTONRAW=xxxxxxxxx


If it would help, I could add a "NOOP" command as well, for silly browsers that always insert a leading slash, as in

     GET /?NOOP;BUTTON=xxxxxxxx

The NOOP would guarantee a "204 No Response", even with a pathname.

-ml