One of the most highly requested, sought after, demanded iRules
features of all time is finally delivered. Ladies and gentlemen,
iRules procedures (procs) are now supported in iRules (as of 11.4)!
For those of you not jumping for joy just yet, clearly you must not
quite know what procs are, or why they’re so exciting. Allow me to
Procedures (procs) are a coding practice by which a user is able to
succinctly define a section of code to later be referenced. For
instance, if I write a really great little header insert section of
code, and realize I may want to use it again later, I can save it as a
proc. Rather than having to copy and paste the code into the next
iRule that needs to make use of it, for it and all other iRules I
would merely have to call the procedure I created with the appropriate
parameters and poof, the code I saved previously in proc form is
executed, the appropriate actions are taken, and my code remains all
the cleaner for it.
Procs will allow you greater flexibility in programming, code re-use,
and a simpler than ever way to share and consume iRules functionality.
With a much more modular approach the community will be able to
provide, share and download individual chunks of functionality in
addition to complete iRules solutions. This will make it by far easier
to piece together functionality for your particular solutions,
tailored just as you need them.
Procedures are one of the most exciting, largest leaps forward in
iRules functionality in quite some time, and certainly the most user
requested. Further documentation on exactly how to make use of this
powerful technology can be found here on DevCentral. Also, keep an eye
out for a series of articles walking through exactly how to use procs
and some examples of what can be done. There is definitely more to
Also see the “call” function page: call
The BIG-IP API Reference documentation contains community-contributed content. F5 does not monitor
or control community code contributions. We make no guarantees or warranties regarding the available code,
and it may contain errors, defects, bugs, inaccuracies, or security vulnerabilities. Your access to and use of any
code available in the BIG-IP API reference guides is solely at your own risk.