[tor-bugs] #18628 [Obfuscation/Snowflake]: Devise some way for the browser proxy to forward metadata to the bridge before the OR data

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#18628: Devise some way for the browser proxy to forward metadata to the bridge
before the OR data
-----------------------------------+--------------------------
 Reporter:  arlolra                |          Owner:  cmm323
     Type:  defect                 |         Status:  assigned
 Priority:  High                   |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Normal                 |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
-----------------------------------+--------------------------

Comment (by dcf):

 Here's the last `bridge-extra-info` descriptor before we pushed the code
 to the bridge (excerpted):
 {{{#!html
 <pre>
 @type bridge-extra-info 1.3
 extra-info flakey 5481936581E23D2D178105D44DB6915AB06BFB7F
 dirreq-stats-end 2017-10-13 17:04:29 (86400 s)
 <strong>dirreq-v3-ips ??=8
 dirreq-v3-reqs ??=16</strong>
 dirreq-v3-resp ok=16,not-enough-sigs=0,unavailable=0,not-found=0,not-
 modified=24,busy=0
 637461,q3=644613,d8=722983,d9=919679,max=1219266
 transport snowflake
 bridge-stats-end 2017-10-13 17:04:40 (86400 s)
 <strong>bridge-ips ??=8</strong>
 bridge-ip-versions v4=8,v6=0
 bridge-ip-transports snowflake=8
 </pre>
 }}}

 Here are the first few after pushing the change. So far there are users
 from Canada (that was us testing), Morocco, Russia, Taiwan, the United
 States, and Turkey. The numbers are rounded to a multiple of 8, so `8` can
 be anything between 1 and 8. There are still some `??` entries—maybe those
 are from the JavaScript proxy, where we haven't pushed the updated code
 yet.

 {{{#!html
 <pre>
 @type bridge-extra-info 1.3
 extra-info flakey 5481936581E23D2D178105D44DB6915AB06BFB7F
 dirreq-stats-end 2017-10-15 19:33:55 (86400 s)
 <strong>dirreq-v3-ips ??=8,ca=8,cn=8,ma=8,ru=8,tw=8,us=8
 dirreq-v3-reqs ??=8,ca=8,cn=8,ma=8,ru=8,tw=8,us=8</strong>
 dirreq-v3-resp ok=32,not-enough-sigs=0,unavailable=0,not-found=0,not-
 modified=40,busy=0
 transport snowflake
 bridge-stats-end 2017-10-15 19:34:09 (86400 s)
 <strong>bridge-ips ??=8,ca=8,cn=8,ma=8,ru=8,tw=8,us=8</strong>
 bridge-ip-versions v4=16,v6=0
 bridge-ip-transports snowflake=16
 </pre>
 }}}

 {{{#!html
 <pre>
 @type bridge-extra-info 1.3
 extra-info flakey 5481936581E23D2D178105D44DB6915AB06BFB7F
 dirreq-stats-end 2017-10-16 19:33:55 (86400 s)
 <strong>dirreq-v3-ips ??=8,ma=8,ru=8,tr=8,us=8
 dirreq-v3-reqs ??=8,ma=8,ru=8,tr=8,us=8</strong>
 dirreq-v3-resp ok=24,not-enough-sigs=0,unavailable=0,not-found=0,not-
 modified=0,busy=0
 transport snowflake
 bridge-stats-end 2017-10-16 19:34:09 (86400 s)
 <strong>bridge-ips ??=8,cn=8,ma=8,ru=8,tr=8,us=8</strong>
 bridge-ip-versions v4=8,v6=0
 bridge-ip-transports snowflake=8
 </pre>
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18628#comment:17>
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