[tor-bugs] #5935 [BridgeDB]: Determine how bridge-pool assignments should work with BridgeDB's IPv6 and pluggable-transport extensions

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#5935: Determine how bridge-pool assignments should work with BridgeDB's IPv6 and
pluggable-transport extensions
----------------------+-----------------------------------------------------
 Reporter:  aagbsn    |          Owner:     
     Type:  defect    |         Status:  new
 Priority:  normal    |      Milestone:     
Component:  BridgeDB  |        Version:     
 Keywords:            |         Parent:     
   Points:            |   Actualpoints:     
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Comment(by asn):

 Replying to [comment:1 karsten]:
 > The current [https://metrics.torproject.org/formats.html#bridgepool
 assignments.log format] specifies three distributor rings where a bridge
 can only be contained in exactly one ring.  If the general assumption that
 a bridge is only distributed via email ''or'' https ''or'' neither of them
 (unallocated), we should be able to extend this format.
 >
 > The current format already allows assigning bridges to several subrings:
 >
 > {{{
 > 0103bb5b00ad3102b2dbafe9ce709a0a7c1060e4 https ring=2 port=443
 flag=stable
 > }}}
 >
 > We could add three new subrings for bridges that are blocked in certain
 countries (listing non-blocked might leave us with a quite long list) and
 are reachable via IPv4/v6 or via certain transports:
 >
 > {{{
 > 0103bb5b00ad3102b2dbafe9ce709a0a7c1060e4 https ring=2 port=443
 flag=stable blocked=cn,ir ip=4,6 transport=or,obfs2
 > }}}
 >
 > Note that I only made a guess how the ip and transport subrings could
 look like.  asn and ln5, please comment on the format there.
 >

 With regards to pluggable transports, there should also be a way to
 specify in which port each pluggable transport is listening (even when a
 bridge supports multiple pluggable transports). In the managed proxy
 protocol, we are specifying this information by using the following
 format:
 {{{
 TOR_PT_SERVER_TRANSPORTS=trebuchet,ballista
 TOR_PT_SERVER_BINDADDR=trebuchet-127.0.0.1:1984,ballista-127.0.0.1:4891
 }}}
 it's not particularly nice but it does its job.

 Also, in the future we might also like to specify an optional arguments
 field for each bridge, so that BridgeDB can pass pluggable transport
 shared-secrets etc. to BridgeDB clients.

 > In theory, any tool that parses assignment.log files should ignore the
 unknown subrings.  If not, we should fix the tools.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5935#comment:2>
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