How to write irule to form the function of Virtual Host?

I have a reverse Apache Proxy. The ProxyPass and ProxyPassReverse statements will either redirect or rewrite (not sure which) the incoming http request.

 

 

I want my v9.x BigIP to do this with and IRULE but there is so much more granularity, I was curious if someone understood specifically the conversion specifics.

 

 

For example: if the http comes in as http://junk.domain.com/test

 

the apache proxy does a ProxyPass /test http://newdest.domain.com/otherdir

 

 

What would be the equivalent from the IRULE? Such questions as:

 

1) would I use [HTTP::uri] eq "/test"

 

2) would I use HTTP::redirect http://newdest.domain.com/otherdir"

 

 

Would the IRULE catch something like //junk.domian.com/test/anotherdir and rewrite it properly

 

 

Is starts_with going to proxy "/testing" or just drop it?

 

Should I use redirect or another directive?

 

 

Does this make more sense?