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Update shared-brotli-fetch-spec.txt
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[DRAFT]
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Changes for Shared Brotli dictionaries to https://fetch.spec.whatwg.org/:
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Introduction:
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This document is a draft proposal for Shard Brotli dictionaries in the fetch spec
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(https://fetch.spec.whatwg.org/).
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The goal is to add support for custom dictionaries for Brotli. A dictionary is used
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to improve compression. A client can download a dictionary from a server and then
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use it to decompress resources compressed with this dictionary.
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This document specifies how the client and server negotiate the dictionary over HTTP.
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A high level overview is as follows: The server adds an HTTP header to the response
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with a URL of the dictionary. The browser downloads the dictionary from the URL and
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then caches it so it can be reused. The server also adds a checksum to an HTTP header
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which the client uses to verify the dictionary. Caching, CORS, and other existing
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mechanisms are used. A dictionary can be a pre-made static dictionary, but does not
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have to be, for example a previous page loaded from this server, or an old version
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of a page, can be used as well.
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Below are changes and additions to add Shared Brotli dictionaries to the fetch spec
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at https://fetch.spec.whatwg.org/:
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Additions to `4.5. HTTP-network-or-cache fetch`
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