what-answers-wanted message
This is invoked when there is zero fit,
directly by the hub without needing to return to the device
Hub to all servers:
- resend same info as "return-enquiry-answers" with new MID
- or if enquiry is cached, may simply resend the MID
Servers process
Servers to hub:
- QIDs for essential As wanted now
- QIDs for essential As that may be wanted if Rs give more As
- QIDs for As that may be wanted if Rs change their wants
Hub collates these wanted As
Hub to local server:
- top 3 QIDs with their category