Re: [APPS-REVIEW] Metalink XML Download Description Format (draft-bryan-
Greetings, An updated Internet Draft for Metalink is available at http://tools.ietf.org/html/draft-bryan-metalink-03 with interim revisions at http://metalinks.svn.sourceforge.net/viewvc/metalinks/internetdraft/ . We're looking for review and public comments. Metalink is an XML-based document format that describes a file or lists of files to be added to a download queue. Lists are composed of a number of files, each with an extensible set of attached metadata. For example, each file can have a description, checksum, and list of URIs that it is available from. The primary use case that Metalink addresses is the description of downloadable content in a format so download agents can act intelligently and recover from common errors with little or no user interaction necessary. These errors can include multiple servers going down and data corrupted in transmission. This updated version incorporates comments: - urn:ietf:params:xml:ns:metalink namespace & registration. - IANA "Operating System Names" registry for listing the OS that a file listed in a metalink is for. This registry would need to be updated to be useful. - new "Client Implementation Considerations" . Currently, this section mentions transparent content negotiation. Issues: - Inclusion of digital signatures other than PGP of files listed in the Metalink. (Only PGP is currently supported). What do we need to add and how might we need to restructure this for other digital signatures to be included/used? - Proxies. If a file listed in a metalink is already in a cache, but a different URI is used then I assume it won't be recognized and will be requested again since it seems to be an uncached file. I'm wondering if the checksums in a metalink or something else could be used to see if the file is the same or not. Thank you, -- (( Anthony Bryan ... Metalink [ http://www.metalinker.org ] )) Easier, More Reliable, Self Healing Downloads
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