Re: [tor-bugs] #26783 [Obfuscation/Snowflake]: Snowflake statistics appear to be broken from something plus mid-June

[Tor Bug Tracker & Wiki]

#26783: Snowflake statistics appear to be broken from something plus mid-June
-+-
 Reporter:  TracTorProjectSucksRightNow  |  Owner:  (none)
 Type:  defect   | Status:  closed
 Priority:  Medium   |  Milestone:
Component:  Obfuscation/Snowflake|Version:
 Severity:  Normal   | Resolution:  wontfix
 Keywords:   |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+-
Changes (by dcf):

 * status:  new => closed
 * resolution:   => wontfix


Comment:

 I guess these missing days of metrics will remain a mystery.

 I've
 
[https://trac.torproject.org/projects/tor/wiki/doc/MetricsTimeline?action=diff&version=299
 noted it] on the Metrics Timeline.

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Re: [tor-bugs] #26783 [Obfuscation/Snowflake]: Snowflake statistics appear to be broken from something plus mid-June

[Tor Bug Tracker & Wiki]

#26783: Snowflake statistics appear to be broken from something plus mid-June
-+
 Reporter:  TracTorProjectSucksRightNow  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  Medium   |  Milestone:
Component:  Obfuscation/Snowflake|Version:
 Severity:  Normal   | Resolution:
 Keywords:   |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+

Comment (by dcf):

 Replying to [comment:4 teor]:
 > All rare transports seem to follow this pattern:
 > https://metrics.torproject.org/userstats-bridge-
 
transport.html?start=2018-04-14&end=2018-07-20&transport=obfs2&transport=websocket&transport=fte&transport=scramblesuit&transport=snowflake

 I don't think it's rare transports, but rather bridges in general. See for
 example the gap between 2018-07-06 and 2018-07-15 here, across all
 transports:
 https://metrics.torproject.org/userstats-bridge-country.html

 The question in this ticket is not why there is no data in the middle of
 July, but why there is no data in the middle of June. Snowflake does
 differ from the other transports in that effect.

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Re: [tor-bugs] #26783 [Obfuscation/Snowflake]: Snowflake statistics appear to be broken from something plus mid-June

[Tor Bug Tracker & Wiki]

#26783: Snowflake statistics appear to be broken from something plus mid-June
-+
 Reporter:  TracTorProjectSucksRightNow  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  Medium   |  Milestone:
Component:  Obfuscation/Snowflake|Version:
 Severity:  Normal   | Resolution:
 Keywords:   |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+

Comment (by teor):

 All rare transports seem to follow this pattern:
 https://metrics.torproject.org/userstats-bridge-
 
transport.html?start=2018-04-14&end=2018-07-20&transport=obfs2&transport=websocket&transport=fte&transport=scramblesuit&transport=snowflake

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Re: [tor-bugs] #26783 [Obfuscation/Snowflake]: Snowflake statistics appear to be broken from something plus mid-June

[Tor Bug Tracker & Wiki]

#26783: Snowflake statistics appear to be broken from something plus mid-June
-+
 Reporter:  TracTorProjectSucksRightNow  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  Medium   |  Milestone:
Component:  Obfuscation/Snowflake|Version:
 Severity:  Normal   | Resolution:
 Keywords:   |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+

Comment (by arma):

 There is a new line on the Snowflake metrics graph:
 https://metrics.torproject.org/userstats-bridge-
 transport.html?start=2018-04-14&end=2018-07-20&transport=snowflake

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Re: [tor-bugs] #26783 [Obfuscation/Snowflake]: Snowflake statistics appear to be broken from something plus mid-June

[Tor Bug Tracker & Wiki]

#26783: Snowflake statistics appear to be broken from something plus mid-June
-+
 Reporter:  TracTorProjectSucksRightNow  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  Medium   |  Milestone:
Component:  Obfuscation/Snowflake|Version:
 Severity:  Normal   | Resolution:
 Keywords:   |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+

Comment (by arma):

 Replying to [comment:1 dcf]:
 > I've added this line to the torrc, but I don't think it will help. I
 believe the bridge authority is only for BridgeDB purposes, not for
 metrics collecting.

 I think it's both -- I believe the way the pipeline works is that your
 bridge publishes its extrainfo descriptor to the bridge authority, which
 syncs it to bridgedb, which syncs it to the metrics data set, and from
 there it works its way to onionoo and to relay-search.

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Re: [tor-bugs] #26783 [Obfuscation/Snowflake]: Snowflake statistics appear to be broken from something plus mid-June

[Tor Bug Tracker & Wiki]

#26783: Snowflake statistics appear to be broken from something plus mid-June
-+
 Reporter:  TracTorProjectSucksRightNow  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  Medium   |  Milestone:
Component:  Obfuscation/Snowflake|Version:
 Severity:  Normal   | Resolution:
 Keywords:   |  Actual Points:
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+

Comment (by dcf):

 I'm not sure what's wrong. I checked and there were not any configuration
 changes on the bridge in June. It's missing from Onionoo too:
 
https://metrics.torproject.org/rs.html#details/5481936581E23D2D178105D44DB6915AB06BFB7F

 The bridge is still producing stats locally:
 {{{
 # cat /var/lib/tor/stats/bridge-stats
 bridge-stats-end 2018-07-14 05:36:29 (86400 s)
 bridge-ips cn=8,in=8,ma=8
 bridge-ip-versions v4=8,v6=0
 bridge-ip-transports snowflake=8
 }}}

 It may have something to do with #26771, which is a change of bridge
 authority. Apparently there was something wrong with the previous bridge
 authority, Bifroest. But I don't know if it could have caused this
 problem.
 https://lists.torproject.org/pipermail/tor-announce/2018-July/000162.html

 I've added this line to the torrc, but I don't think it will help. I
 believe the bridge authority is only for BridgeDB purposes, not for
 metrics collecting.
 {{{
 AlternateBridgeAuthority Serge orport=9001 bridge 66.111.2.131:9030 BA44
 A889 E64B 93FA A2B1 14E0 2C2A 279A 8555 C533
 }}}

 In May 2017, we had the same problem of the Snowflake bridge not
 publishing statistics. Then, we worked around it by setting
 `AssumeReachable 1`. Two other default bridges, cymrubridge31 and
 cymrubridge33, were not—and still are not :(—publishing statistics, and no
 one was ever able to determine the cause. Maybe we are being affected by
 the same thing again.
 https://lists.torproject.org/pipermail/tor-dev/2017-May/012241.html
 https://lists.torproject.org/pipermail/tor-dev/2017-June/012291.html
 (thread continues)

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[tor-bugs] #26783 [Obfuscation/Snowflake]: Snowflake statistics appear to be broken from something plus mid-June

[Tor Bug Tracker & Wiki]

#26783: Snowflake statistics appear to be broken from something plus mid-June
-+
 Reporter:  TracTorProjectSucksRightNow  |  Owner:  (none)
 Type:  defect   | Status:  new
 Priority:  Medium   |  Milestone:
Component:  Obfuscation/Snowflake|Version:
 Severity:  Normal   |   Keywords:
Actual Points:   |  Parent ID:
   Points:   |   Reviewer:
  Sponsor:   |
-+
 https://metrics.torproject.org/userstats-bridge-
 transport.html?start=2018-04-14&end=2018-07-13&transport=snowflake

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