[Where/How] to use OneConnect for permanent connection?

Does oneconnect only work with http? I only use TCP..

since you do not use http profile, i understand you may have to manually detach serverside connection (i.e. LB::detach) when transaction is done (because bigip does not know when it is considered complete). this is one of nice articles about oneconnect (anyway it may not answer your question).

OneConnect? For my iRule? by Deb Allen

https://devcentral.f5.com/articles/oneconnect-for-my-irule.U3wvUCjNyCQ

Eg: when adding a pool member, I noticed that F5 is actually connecting to the pool member on the specified port. Is it possible to make F5 create a permanent connection at this stage and every other subsequent traffic is using this connection?

another method is to use mblb but it is experimental command (i.e. LB::context_id, LB::dst_tag, LB::src_tag).