[tor-bugs] #9349 [Flashproxy]: flashproxy facilitator: Allow clients to specify transports

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#9349: flashproxy facilitator: Allow clients to specify transports
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 Reporter:  asn         |          Owner:  dcf  
     Type:  task        |         Status:  new  
 Priority:  normal      |      Milestone:       
Component:  Flashproxy  |        Version:       
 Keywords:              |         Parent:  #7167
   Points:              |   Actualpoints:       
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Comment(by asn):

 Items that need to be done to achieve the goal of this ticket:

 - Implement advanced client registrations, where clients can also specify
 a transport when they ask for a flashproxy. David in comment:2:ticket:5578
 said that registrations currently look like this:
 {{{
 client=1.2.3.4:9000
 }}}
 and they could be changed to look similar to this:
 {{{
 client-1.2.3.4:9000&client-webrtc=1.2.3.4:10000
 }}}

 - Facilitators should be able to have multiple bridges that they can
 suggest to flashproxies. The facilitator currently reads a single bridge
 using the `--address` CLI switch
 (https://gitweb.torproject.org/flashproxy.git/blob/e85b4a8ee5d603c34fc63ef3c9878ae06378da94:/facilitator/init.d/facilitator#l19).
 We will need to pass multiple bridges in the future, so we might want to
 use a config file, where we put our bridges and annotate them with the
 transports they support. Possible example of such a config file:
 {{{
 websocket 1.2.3.4:5555
 webrtc 1.2.3.4:6555
 obfs2-websocket 1.2.3.5:5555
 }}}

 - The facilitator should parse the new client-registration, match it up
 with a registered bridge, and return the bridge as part of its response.
 We might also want to make a response for "transport name not known".

 All of the tasks above should be spec'ed.
 Doesn't look too hard!

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9349#comment:1>
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