[tor-bugs] #652 [Tor Relay]: Tor doesn't detect when the world cannot reach it anymore

[Tor Bug Tracker & Wiki]

#652: Tor doesn't detect when the world cannot reach it anymore
--------------------------+-------------------------------------------------
 Reporter:  Sebastian     |         Type:  defect   
   Status:  closed        |     Priority:  minor    
Milestone:  post 0.2.1.x  |    Component:  Tor Relay
  Version:  0.2.0.23-rc   |   Resolution:  fixed    
 Keywords:                |       Parent:           
--------------------------+-------------------------------------------------
Changes (by nickm):

  * status:  new => closed
  * resolution:  None => fixed


Old description:

> This is Tor r14297. When my internet connection dies (as it does every 24
> hours),
> and I come back up with a different IP address, Tor doesn't seem to
> notice that
> the world cannot connect to it anymore. This used to be different in the
> pre-RC
> versions, I haven't checked the previous RCs for that behaviour. Even
> after 6 hours,
> Tor has nothing in the Notice-level log.
>
> [Automatically added by flyspray2trac: Operating System: All]

New description:

 This is Tor r14297. When my internet connection dies (as it does every 24
 hours),
 and I come back up with a different IP address, Tor doesn't seem to notice
 that
 the world cannot connect to it anymore. This used to be different in the
 pre-RC
 versions, I haven't checked the previous RCs for that behaviour. Even
 after 6 hours,
 Tor has nothing in the Notice-level log.

 [Automatically added by flyspray2trac: Operating System: All]

--

Comment:

 So the probe that happens here now is in
 update_router_descriptor_downloads() if we're a server, and it happens
 every 20 minutes, if 20 minutes have passed since we last tried fetching
 any routerdescs.

 We could also make it happen less often if we somehow know that our
 existing published address is okay: for example, if we are getting new OR
 connections and DIR connections happily, or if we learn our IP from some
 other source like a NETWORKSTATUS cell.  But in practice, that doesn't
 seem to matter.  I'm going to open a new bug report for this since the
 current solution is inelegant: see #2178.  The original bug here was fixed
 back in 2008.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/652#comment:12>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online