[metrics-bugs] #29269 [Circumvention/BridgeDB]: Evaluation of bridge statistics

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#29269: Evaluation of bridge statistics
------------------------------------+---------------------------
 Reporter:  cohosh                  |          Owner:  nickm
     Type:  task                    |         Status:  accepted
 Priority:  Medium                  |      Milestone:
Component:  Circumvention/BridgeDB  |        Version:
 Severity:  Normal                  |     Resolution:
 Keywords:  bridges, statistics     |  Actual Points:
Parent ID:                          |         Points:
 Reviewer:                          |        Sponsor:  Sponsor19
------------------------------------+---------------------------

Comment (by phw):

 To add a bit more context to this ticket: At the
 [http://meetbot.debian.net/tor-meeting/2019/tor-
 meeting.2019-04-04-20.00.log.html April 4 anti-censorship meeting] we
 discussed how to move forward with this:
 * We should ask the metrics team what information is available for
 bridges.
 * The anti-censorship team should then decide if we need more information.
 * If we decide that more information is needed, we'll create core Tor
 tickets to collect this information.
 * Nick also suggested that we defer this task until PrivCount is even
 farther along.

 For the lazy, here's an example of the type of information reported in
 extra-info bridge descriptors:
 {{{
 @type bridge-extra-info 1.3
 extra-info devurandom D4E10C95CBBD656AAA76BDB800F89BF9929A7098
 master-key-ed25519 iAx4u+//mpfxNN3e33g5CXcRaEB/RClpC9xhCjjkxr0
 published 2019-05-10 21:05:51
 write-history 2019-05-10 05:00:33 (86400 s)
 6764741632,8144902144,8341011456,10113909760,6633532416
 read-history 2019-05-10 05:00:33 (86400 s)
 7024661504,8455880704,8617527296,10398723072,6861299712
 dirreq-write-history 2019-05-10 05:00:33 (86400 s)
 9319424,14578688,17586176,15299584,17875968
 dirreq-read-history 2019-05-10 05:00:33 (86400 s)
 845824,339968,445440,543744,914432
 geoip-db-digest 2B8A70B399CF8B471289A4DB52947DE965D8DE5F
 geoip6-db-digest FEA33E6F398DF67252F41DDD3D010E69B33D544E
 dirreq-stats-end 2019-05-10 14:41:37 (86400 s)
 dirreq-v3-ips ir=24,ae=8,in=8,pt=8,ru=8,us=8
 dirreq-v3-reqs ir=56,ae=8,in=8,pt=8,ru=8,us=8
 dirreq-v3-resp ok=72,not-enough-sigs=0,unavailable=0,not-found=0,not-
 modified=8,busy=0
 dirreq-v3-direct-dl complete=0,timeout=0,running=0
 dirreq-v3-tunneled-dl
 complete=64,timeout=8,running=0,min=52389,d1=69403,d2=159777,q1=182912,d3=274472,d4=442298,md=1285413,d6=1999000,d7=3273166,q3=3598200,d8=3798727,d9=5035333,max=8373045
 hidserv-stats-end 2019-05-10 14:41:37 (86400 s)
 hidserv-rend-relayed-cells -3774 delta_f=2048 epsilon=0.30 bin_size=1024
 hidserv-dir-onions-seen -10 delta_f=8 epsilon=0.30 bin_size=8
 padding-counts 2019-05-10 14:42:06 (86400 s) bin-size=10000 write-drop=0
 write-pad=30000 write-total=40000 read-drop=0 read-pad=400000 read-
 total=12160000 enabled-read-pad=20000 enabled-read-total=3980000 enabled-
 write-pad=20000 enabled-write-total=20000 max-chanpad-timers=145
 transport obfs3
 transport obfs4
 bridge-stats-end 2019-05-10 14:42:06 (86400 s)
 bridge-ips ir=32,ae=8,in=8,pt=8,ru=8,us=8
 bridge-ip-versions v4=40,v6=0
 bridge-ip-transports <OR>=16,obfs3=16,obfs4=24
 router-digest-sha256 S7IFV/+5By6iX2CgnzV7kN5DkTaKRT9ZA5QOB7rQMLU
 router-digest BD7D78EBC25B23B513B868E6722E45226E43EC48
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29269#comment:4>
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