Persist connection or session on F5 (where client /server both do not have cookies or session management

Hi Sosa, now that I have looked at your capture, I see these are XML/Soap calls. There is already a DevCentral post with some ideas on how to do this, here:

https://devcentral.f5.com/questions/soap-sessions

Unfortunately, there is not an actual example iRule in the post, but the links to the Support article do. I think if you mix the XML parsing with the Persist command in an iRule, you should be able to accomplish what you are looking for with the universal persistence records.

I'll also comment, if I may, that it appears that you have the user phone number in one XML element, and the user session key in another element. I would suggest that for future development ( and traffic management ) simplicity, you consider moving/adding user-specific data to HTTP headers, which are much more easily accessible to other systems ( that don't have XML parsing ). If this data is sensitive, you could always encrypt it with SSL. Just an idea for your dev team :-)

Hope this is helpful and good luck !

-Chris.