#588 - GEVENT_RESOLVER=ares should be preferred

X2Go Bug report logs - #588
GEVENT_RESOLVER=ares should be preferred

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Fri, 29 Aug 2014 14:25:01 UTC

Severity: important

Tags: pending

Fixed in version 0.5.0.0

Done: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Bug is archived. No further changes may be made.

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From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: submit@bugs.x2go.org
Subject: GEVENT_RESOLVER=ares should be preferred
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Package: python-x2go Severity: important Since python-gevent 1.0 gevent fails to detect DNS changes (e.g. when connecting to a VPN server). From http://gevent.org/whatsnew_1_0.html : """ New dns resolver Two new DNS resolvers: threadpool-based one (enabled by default) and c-ares based one. That threadpool-based resolver was added mostly for Windows and Mac OS X platforms where c-ares might behave differently w.r.t system configuration. On Linux, however, the c-ares based resolver is probably a better choice. To enable c-ares resolver set GEVENT_RESOLVER=ares environment variable. This fixes some major issues with DNS on 0.13.x, namely: Issue #2: DNS resolver no longer breaks after fork(). You still need to call gevent.fork() (os.fork is monkey patched with it if monkey.patch_all() was called). DNS resolver no longer ignores /etc/resolv.conf and /etc/hosts. The following functions were added to socket module: gethostbyname_ex getnameinfo gethostbyaddr getfqdn It is possible to implement your own DNS resolver and make gevent use it. The GEVENT_RESOLVER variable can point to alternative implementation using the format: package.module.class. The default is gevent.resolver_thread.Resolver. The alternative “ares” resolver is an alias for gevent.resolver_ares.Resolver. """ Thus: we need to enforce setting of env variable GEVENT_RESOLVER=ares in Python X2Go. Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb

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X2Go Bug report logs - #588 GEVENT_RESOLVER=ares should be preferred

X2Go Bug report logs - #588
GEVENT_RESOLVER=ares should be preferred