Re: [tor-bugs] #21967 [Core Tor/Tor]: obfs4proxy not killed when unused

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#21967: obfs4proxy not killed when unused
--------------------------+------------------------------------
 Reporter:  asn           |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.3.1.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  tor-pt        |  Actual Points:
Parent ID:                |         Points:  1.5
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by arma):

 Wugh. There's some sort of subtlety in pt_configure_remaining_proxies()
 where it restarts managed proxies sometimes, and it might implicitly drop
 transports it doesn't know it needs, or something. See the call to
 sweep_transport_list() in proxy_prepare_for_restart(). But by then it's
 too late because pt_kickstart_proxy set mp->marked_for_removal to 0 and
 nothing ever marks it again.

 (Whoever decided that transport_t should have a marked_for_removal flag,
 and managed_proxy_t should have an identically named marked_for_removal
 flag, is not a nice person.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21967#comment:8>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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