What do we call a circuit that we have built in order to extend it one more hop for HS purposes?
See discussion at !1065 (comment 2887651).
With !1065 (merged) we now build a pool of 3-hop circuits, which we later (in most cases) will extend one more hop in order to make an introduction, hsdir, or rendezvous circuit. What do we call these not-yet-done 3-hop circuits?
Suggestions are:
- stub circuits
- preparatory / partial / incomplete / incipient / generic circuit
- circuit prefix / stem
- leading / foremost circuit portion
This term is currently internal to hspool.rs, and not user visible, but we should make it project-wide anyway.