multiple match-based stream replacements?

That's a good question. I don't think you can do this. I think if you call STREAM::expression multiple times, you'd just overwrite the past config with the current one. Worst case if you really need this type of functionality, you could potentially use a virtual targeting a virtual. That might work to allow you to apply two stream expressions to the same response. You can use the virtual command to target a virtual server from another one:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/virtual

 

 

Aaron