Filtering out non-HTTP requests (400 errors)

[Piotr Sikora]

> I guess moving to http checks *is* the way to go in the long run.

Yes it is. IMHO "TCP checks" give you false sense of safety, because you 
think that everything works fine, while they only verify that connection is 
accepted (on the TCP level) by the server... Proper checks *must* issue 
command on application-level and parse server's response, otherwise they are 
useless.

> BTW, I tried messing with $request and $request_uri but without success
> (I expected either an empty string or a dash, as in access.log).

Dash in logs means that given value wasn't present (v->not_found = 1). Also, 
since we are talking about 400 Bad Request, you can't really expect 
$request_uri to be set ;)

Best regards,
Piotr Sikora < piotr.sikora at frickle.com >