parsing http response body has no performance impact?

I think you might find greater performance using the Stream profile and it's pattern matching for this - especially if all you want to do is a 'search & replace' on the outgoing stream.

 

 

If you want to drop connections and/or send an alternative response based on the stream pattern matching then that is possible via an additional iRule - but I would think that using the matching of the stream profile to trigger the iRules 'STREAM_MATCHED' event would be far better than using the ::collect methods to collect entire HTTP responses.

 

 

I think if you search for "STREAM_MATCHED" here on the forums you'll find some discussions that might point you in the right direction.

 

 

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Aaron