[tor-bugs] #5617 [Obfsproxy]: obfsproxy: test suite failure (connection refused)

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#5617: obfsproxy: test suite failure (connection refused)
-----------------------+----------------------------------------------------
 Reporter:  asn        |          Owner:  asn
     Type:  defect     |         Status:  new
 Priority:  normal     |      Milestone:     
Component:  Obfsproxy  |        Version:     
 Keywords:             |         Parent:     
   Points:             |   Actualpoints:     
-----------------------+----------------------------------------------------

Comment(by asn):

 I suspect that this one is caused by this code:
 {{{
         self.output_reader = ReadWorker(("127.0.0.1", EXIT_PORT))
         self.obfs = Obfsproxy(self.obfs_args)
         self.input_chan = connect_with_retry(("127.0.0.1", ENTRY_PORT))
 }}}

 `ReadWorker` is supposed to listen in `EXIT_PORT`, so that the server-side
 obfsproxy can send it data to read.

 `ReadWorker` is implemented as a `multiprocessing` process, and I think
 that the `Connection refused` error is caused by the race condition
 between `ReadWorker` spawning its python process, and `Obfsproxy` spawing
 its obfsproxy process that tries to connect to `EXIT_PORT`.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5617#comment:2>
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