[tor-bugs] #25598 [Circumvention/Snowflake]: Let the broker inform proxies how often to poll

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#25598: Let the broker inform proxies how often to poll
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 Reporter:  dcf                      |          Owner:  (none)
     Type:  enhancement              |         Status:  new
 Priority:  Medium                   |      Milestone:
Component:  Circumvention/Snowflake  |        Version:
 Severity:  Normal                   |     Resolution:
 Keywords:  starter                  |  Actual Points:
Parent ID:                           |         Points:
 Reviewer:                           |        Sponsor:
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Comment (by dcf):

 Replying to [comment:3 serna]:
 > > The broker could instead tell each proxy how long to wait before
 polling again. The broker could even dynamically adjust the rate based on
 an estimate of supply and demand.
 > \\
 > What information would you use to determine the time dynamically? I was
 thinking in using {{{clientDeniedCount}}} and {{{proxyIdleCount}}} from
 the metrics but it resets every 24 hours which can be a bit misleading.

 The first step is just to use a hardcoded value of 20 s. Ignore
 `clientDeniedCount` and `proxyIdleCount` and everything else. Just call a
 function that returns a constant 20. Deciding on what logic should go in
 that function later is a task of its own.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25598#comment:4>
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