[tor-bugs] #12579 [Ooni]: Make bouncer and client aware of policies

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#12579: Make bouncer and client aware of policies
-------------------------+-------------------------
 Reporter:  hellais      |          Owner:  hellais
     Type:  enhancement  |         Status:  new
 Priority:  normal       |      Milestone:
Component:  Ooni         |        Version:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
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 Currently when the bouncer returns a collector to a probe it does not take
 into account the fact that such collector may not support the specified
 test and/or inputs. This means that when the probe will try to report to
 it, it may fail and the report will be lost.

 This feature is related to making the bouncer aware of the collector
 policies. Depending on the input and tests that a probe is interested in
 running it shall return only collectors that support them.

 The bouncer should always return the collector with the most strict policy
 that supports the given test and only fail over to using the less strict
 ones when there is no alternative.

 Part of this is already implemented in these two branches:

 ooni-probe: https://github.com/TheTorProject/ooni-
 probe/tree/feature/oonib_policy_aware

 ooni-backend: https://github.com/TheTorProject/ooni-
 backend/tree/feature/oonib_policy_aware

 What is currently missing is to review these two branches and update ooni-
 spec to reflect these changes to the bouncer API.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12579>
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