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Re: [tor-relays] SIGHUP causing obfs warning/disabling



> On 19 Jan 2017, at 12:00, Geoff Down <geoffdown@xxxxxxxxxxxx> wrote:
> 
> Hi,
> I sent a SIGHUP to the tor process after altering the torrc and got this
> effect:
> Jan 19 00:47:42.000 [notice] Tor 0.2.9.8 opening log file.
> Jan 19 00:47:55.000 [warn] Server managed proxy encountered a method
> error. (obfs3 Could not set up listener (0.0.0.0:xxxxx) for 'obfs3'
> (Address already in use).)
> Jan 19 00:47:55.000 [warn] Managed proxy at '/usr/bin/obfsproxy' failed
> the configuration protocol and will be destroyed.
> 
> It did it again when I restored the torrc and SIGHUPed again. Obfs3 is
> still running and listening afaict:
> tor      17356   0.0  0.2    49944   1736  ??  S    20Dec16   0:13.04
> /opt/local/Library/Frameworks/Python....
> Python  17356  tor    3u  IPv4 0x02eb32a4      0t0  TCP *:xxxxx (LISTEN)
> 
> Bug or !Bug ?

This could be a bug in tor in pt_configure_remaining_proxies(), or it
could be a bug in obfsproxy, or it could not be a bug.

What are the ServerTransport* lines in your torrc, default torrc,
and command-line?
What are the info-level log lines around the lines you quoted?

For example, do you see something like:
Preparing managed proxy '%s' for restart.
(If so, this could be a bug in proxy_prepare_for_restart().)
Nothing changed for managed proxy '%s' after HUP: not restarting.

T

--
Tim Wilson-Brown (teor)

teor2345 at gmail dot com
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