[metrics-bugs] #23981 [Metrics/CollecTor]: Include "bridge-distribution-request" lines in sanitized bridge descriptors

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#23981: Include "bridge-distribution-request" lines in sanitized bridge descriptors
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 Reporter:  karsten            |          Owner:  metrics-team
     Type:  defect             |         Status:  new
 Priority:  High               |      Milestone:
Component:  Metrics/CollecTor  |        Version:
 Severity:  Normal             |     Resolution:
 Keywords:                     |  Actual Points:
Parent ID:                     |         Points:
 Reviewer:                     |        Sponsor:
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Comment (by iwakeh):

 Might be a way to single out bridges?  This ought to be scrubbed?

 Here's [https://gitweb.torproject.org/torspec.git/tree/dir-spec.txt#n615
 the spec]:
 {{{
 "bridge-distribution-request" SP Method NL

         [At most once, bridges only.]

         The "Method" describes how a Bridge address is distributed by
         BridgeDB. Recognized methods are: "none", "any", "https", "email",
         "moat", "hyphae". If set to "none", BridgeDB will avoid
 distributing
         your bridge address. If set to "any", BridgeDB will choose how to
         distribute your bridge address. Choosing any of the other methods
 will
         tell BridgeDB to distribute your bridge via a specific method:

           - "https" specifies distribution via the web interface at
              https://bridges.torproject.org;
           - "email" specifies distribution via the email autoresponder at
             bridges at torproject.org;
           - "moat" specifies distribution via an interactive menu inside
 Tor
             Browser; and
           - "hyphae" specifies distribution via a cryptographically-
 secure,
             invitation-based system.

         Potential future "Method" specifiers must be as follows:
             Method = (KeywordChar | "_") +

         All bridges SHOULD include this line. Non-bridges MUST NOT include
         it.  (It is not currently implemented, or obeyed by Bridge DB.)

         BridgeDB SHOULD treat unrecognized Method values as if they were
         "none".

         (Default: "any")
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23981#comment:2>
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