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authorDavid Kalnischkies <david@kalnischkies.de>2015-07-09 12:21:20 +0200
committerDavid Kalnischkies <david@kalnischkies.de>2015-08-10 17:27:17 +0200
commita4b8112b19763cbd2c12b81d55bc7d43a591d610 (patch)
tree6fa3ae00e73753a4b06a3f87fb29dc2106943860 /doc
parent1196da2e7b620ed7d1aed717a85c4879945ea699 (diff)
handle site-changing redirects as mirror changes
Redirectors like httpredir.debian.org orchestra the download from multiple (hopefully close) mirrors while having only a single central sources.list entry by using redirects. This has the effect that the progress report always shows the source it started with, not the mirror it ends up fetching from, which is especially problematic for error reporting as having a report for a "Hashsum mismatch" for the redirector URI is next to useless as nobody knows which URI it was really fetched from (regardless of it coming from a user or via the report script) from this output alone. You would need to enable debug output and hope for the same situation to arise again… We hence reuse the UsedMirror field of the mirror:// method and detect redirects which change the site and declare this new site as the UsedMirrror (and adapt the description). The disadvantage is that there is no obvious mapping anymore (it is relatively easy to guess through with some experience) from progress lines to sources.list lines, so error messages need to take care to use the Target description (rather than current Item description) if they want to refer to the sources.list entry.
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