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Re: [tor-bugs] #16028 [Tor Browser]: Many users seem to be failing incremental updates to 4.5.1
#16028: Many users seem to be failing incremental updates to 4.5.1
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Reporter: mikeperry | Owner: tbb-team
Type: defect | Status: new
Priority: major | Milestone:
Component: Tor Browser | Version:
Resolution: | Keywords: tbb-updater
Actual Points: | Parent ID:
Points: |
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Comment (by mcs):
Kathy and I have come up with a few scenarios that may be causing the TB
updater to fallback to a full MAR:
1. The user makes changes to torrc-defaults (the 4.0.8 -> 4.5.1
incremental MAR tries to patch that file). There are a bunch of files
that the incremental MAR tries to patch, any of which would cause this
same problem; torrc-defaults just seems more likely to be modified by
users than the others.
2. A network failure of the wrong kind occurs during download of the
incremental MAR. In our testing on Windows, New Identity triggered a
complete MAR download.
3. The user exits the browser (or a crash occurs) during the download.
When this happens, the update service is supposed to resume the
incremental MAR download when the browser is restarted, but we have seen
it treat this as a network error in some cases.
We should be able to distinguish 1. above from 2. and 3. because if a
failure occurs while trying to apply the incremental MAR it should have
been completely downloaded (and only partially downloaded in the other two
situations). So maybe check the size field within the Apache logs if we
have that info.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16028#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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