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Update comment and add changes file for 20942

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teor 2017-12-22 21:49:28 +11:00
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changes/bug20942 Normal file
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@ -0,0 +1,3 @@
o Minor features (fallback directory mirrors):
- Reject any fallback directory mirror that serves an expired consensus.
Implements ticket 20942, patch by "minik".

9
scripts/maint/updateFallbackDirs.py
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@ -98,10 +98,11 @@ DOWNLOAD_MICRODESC_CONSENSUS = True
# reject consensuses that are older than REASONABLY_LIVE_TIME.
# For the consensus expiry check to be accurate, the machine running this
# script needs an accurate clock.
# We use 24 hours to compensate for #20909, where relays on 0.2.9.5-alpha and
# 0.3.0.0-alpha-dev and later deliver stale consensuses, but typically recover
# after ~12 hours.
# We should make this lower when #20909 is fixed, see #20942.
#
# Relays on 0.3.0 and later return a 404 when they are about to serve an
# expired consensus. This makes them fail the download check.
# We use a tolerance of 0, so that 0.2.x series relays also fail the download
# check if they serve an expired consensus.
CONSENSUS_EXPIRY_TOLERANCE = 0
# Output fallback name, flags, bandwidth, and ContactInfo in a C comment?