[jetty-users] deny access based on user agent

["Paul B. Henson" <henson@xxxxxxx>]

There's a broken web crawler ignoring the site robots.txt which is 
pounding a webapp I'm running under jetty and generating a ton of noise 
in the application logs.

I'd like to deny access to it based on user agent, as it is consistently 
identifying itself at least.

What is the best way to do that with jetty? With Apache, I could use a 
rewrite rule to match against the user agent and return a 403.

I don't initially see a similar way to do that with jetty's rewrite 
engine; the ResponsePatternRule appears to allow overriding a specific 
response code, but it looks like you can only look at the URL to match 
against, not headers like the user agent?

There is a HeaderRule that looks like it would match against the user 
agent header, but it is marked as abstract.

The Apache syntax would simply be:

	RewriteCond %{HTTP_USER_AGENT} "=blackboardally"
	RewriteRule ^ - [F]

Am I missing a way to do this with jetty rewrite? Or is there an 
alternative module/mechanism that could accomplish this?

Thanks much…