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Update shared-brotli-fetch-spec.txt

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Lode Vandevenne 2017-11-17 01:38:05 +01:00 committed by GitHub
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fetch-spec/shared-brotli-fetch-spec.txt
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[DRAFT]
Changes for Shared Brotli dictionaries to https://fetch.spec.whatwg.org/:
Introduction:
This document is a draft proposal for Shard Brotli dictionaries in the fetch spec
(https://fetch.spec.whatwg.org/).
The goal is to add support for custom dictionaries for Brotli. A dictionary is used
to improve compression. A client can download a dictionary from a server and then
use it to decompress resources compressed with this dictionary.
This document specifies how the client and server negotiate the dictionary over HTTP.
A high level overview is as follows: The server adds an HTTP header to the response
with a URL of the dictionary. The browser downloads the dictionary from the URL and
then caches it so it can be reused. The server also adds a checksum to an HTTP header
which the client uses to verify the dictionary. Caching, CORS, and other existing
mechanisms are used. A dictionary can be a pre-made static dictionary, but does not
have to be, for example a previous page loaded from this server, or an old version
of a page, can be used as well.
Below are changes and additions to add Shared Brotli dictionaries to the fetch spec
at https://fetch.spec.whatwg.org/:
Additions to `4.5. HTTP-network-or-cache fetch`