[tor-bugs] #5028 [Tor Bridge]: Tor bridge scanning

["Tor Bug Tracker & Wiki" <torproject-admin@xxxxxxxxxxxxxx>]

#5028: Tor bridge scanning
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 Reporter:  hellais     |          Owner:                           
     Type:  project     |         Status:  new                      
 Priority:  normal      |      Milestone:  Sponsor F: March 15, 2012
Component:  Tor Bridge  |        Version:                           
 Keywords:              |         Parent:                           
   Points:              |   Actualpoints:                           
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 We need to scan the reachability of Tor Bridges from parts of the world.
 This is geared at detecting what bridges are working correctly and which
 are censored from where.

 This is what the ooni-probe test BridgeT does.

 The main question this tool wants to answer is:
 "Amongst this set of bridges which ones are working from where?"

 the sub-question is:
 "The not working ones are not working because they are censored?"

 The data that should come out of BridgeT are:
 * Timestamp of the scan
 * IP address of the scanner
 * IP address of the scanned bridge
 * Status: working | not working | censored
 * Some debug information on what went wrong

 The debug information should be in a first stage the output of Tors log
 for loglevel
 notice, info or debug. In future this may be expanded to include some
 other information
 (what? packet captures?).

 This will be deployed in a first stage on Planet labs servers. In future
 it will be one of
 the default ooni-probe tests and will run from wherever ooni-probe is
 running from.

 Another worth considering question is how BridgeT learns about the bridges
 to test. If we want this to scale well we should figure out a mechanism
 for making BridgeT learn about new bridges to scan.

 In the first phase the list is just a static text file.

 Somebody should test out the current BridgeT code to make sure that it is
 working correctly.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5028>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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