[tor-bugs] #449 [Core Tor/Tor]: dns failures prevent legitimate options being set
Tor Bug Tracker & Wiki
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Tue May 23 18:34:45 UTC 2017
#449: dns failures prevent legitimate options being set
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Reporter: mwenge | Owner: nickm
Type: defect | Status: accepted
Priority: Low | Milestone: Tor:
| unspecified
Component: Core Tor/Tor | Version:
| 0.2.0.2-alpha
Severity: Normal | Resolution: None
Keywords: dns, tor-hs, tor-client, tor-relay | Actual Points:
Parent ID: | Points: 4
Reviewer: | Sponsor:
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Comment (by nickm):
So, what can we do here? One option is to cache the results of DNS
lookups that we did as part of the torrc parse, and then later to treat a
failed lookup for the same hostname as meaning that we should use the
cached address.
I don't think we'd want to do this for DNS lookups in general -- we'd want
to audit every place that we do a DNS lookup (except evdns.c) to see
whether this is the behavior we want or not.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/449#comment:12>
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