F5 Field Systems Engineer Christopher Schaefer sits down with Colin & Deb to explore an interesting iRules solution:  Persistence for mobile devices running a proprietary stateful TCP application while roaming across cell towers mid-session.  In the absence of a consistent IP address or any identifying header information, Chris discovered the client mobile ID embedded in the binary data of the traffic stream, and built a custom Universal Persistence solution.  This solution was only possible because of the SSL offload capability of LTM, which allows LTM to decrypt the traffic before examining and acting upon it.

This solution was brought to you by the iRule commands: persist , TCP::collect, and TCP::payload, and the Tcl command binary