create a new Header value manipulation iRule

create a new Header value manipulation iRule. This iRule needs to interrogate Header values and substitute the x-forwarded-for value with True-Client-IP value if available. our CDN is providing the actual client IP address via this new Header value yet our current code base leverages the x-forwarded-for Header value for client address interrogation. This iRule allows for zero code impact while allowing us to leverage the new CDN IP Header value.

 

can anyone tell me if this is correct? or moreso how to form this into an iRule. irules are my absolute weakest part of the f5

 

IF Header Name True-Client-IP Exists THEN Set X-Forwarded-For Value equal to True-Client-IP value END IF