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Re: [tor-bugs] #33693 [Circumvention/Snowflake]: snowflake's 0.0.3.0 dummy address means rate limits are skipped means BW controller events show no bandwidth used



#33693: snowflake's 0.0.3.0 dummy address means rate limits are skipped means BW
controller events show no bandwidth used
-------------------------------------+------------------------
 Reporter:  arma                     |          Owner:  (none)
     Type:  defect                   |         Status:  new
 Priority:  Medium                   |      Milestone:
Component:  Circumvention/Snowflake  |        Version:
 Severity:  Normal                   |     Resolution:
 Keywords:                           |  Actual Points:
Parent ID:                           |         Points:
 Reviewer:                           |        Sponsor:
-------------------------------------+------------------------

Comment (by cohosh):

 Look at this helpful comment for the `connection_is_rate_limited()`
 function:

 {{{
 /** Return 1 if we should apply rate limiting to <b>conn</b>, and 0
  * otherwise.
  * Right now this just checks if it's an internal IP address or an
  * internal connection. We also should, but don't, check if the connection
  * uses pluggable transports, since we should then limit it even if it
  * comes from an internal IP address. */
 static int
 connection_is_rate_limited(connection_t *conn)
 {
   const or_options_t *options = get_options();
   if (conn->linked)
     return 0; /* Internal connection */
   else if (! options->CountPrivateBandwidth &&
            (tor_addr_family(&conn->addr) == AF_UNSPEC || /* no address */
             tor_addr_family(&conn->addr) == AF_UNIX ||   /* no address */
             tor_addr_is_internal(&conn->addr, 0)))
     return 0; /* Internal address */
   else
     return 1;
 }
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33693#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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