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Re: [tor-bugs] #24826 [Core Tor/Tor]: LZMA- and Zstandard compressed consensus diffs stall Tor Browser launch for at least 20s or break it entirely
#24826: LZMA- and Zstandard compressed consensus diffs stall Tor Browser launch for
at least 20s or break it entirely
--------------------------+------------------------------------
Reporter: gk | Owner: (none)
Type: defect | Status: new
Priority: Medium | Milestone: Tor: 0.3.3.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: #22341 | Points:
Reviewer: | Sponsor:
--------------------------+------------------------------------
Comment (by nickm):
Hm. On 0.3.2, I failed to see this bug happen. The timing was:
{{{
Jan 10 09:25:35.000 [debug] dir_client_decompress_response_body():
Successfully
decompressed body using LZMA compressed
Jan 10 09:25:35.000 [debug] consensus_diff_apply(): About to apply
consensus dif
f.
Jan 10 09:25:35.000 [debug] consensus_diff_apply(): Computed digest-as-
signed fo
r applying consensus diff.
Jan 10 09:25:35.000 [debug] consdiff_apply_diff(): Extracted digests for
consens
us diff.
Jan 10 09:25:35.000 [debug] consdiff_apply_diff(): Digests match; applying
diff.
Jan 10 09:25:35.000 [debug] consdiff_apply_diff(): Diff applied.
Jan 10 09:25:35.000 [debug] consdiff_apply_diff(): Computing digest of
resulting
consensus.
Jan 10 09:25:35.000 [debug] consdiff_apply_diff(): Digests are equal; diff
appli
cation succeeded.
Jan 10 09:25:35.000 [info] handle_response_fetch_consensus(): Applied
consensus
diff (size 97517) from server '154.35.175.225:443', resulting in a new
consensus
document (size 1885985).
}}}
I'll try again with the same patch on 0.3.3.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24826#comment:13>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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