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Re: Resumable Upload draft updates

Rob Sayre <sayrer@gmail.com> Thu, 25 July 2024 20:20 UTC

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From: Rob Sayre <sayrer@gmail.com>
Date: Thu, 25 Jul 2024 13:19:39 -0700
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To: Lucas Pardue <lucas@lucaspardue.com>
Cc: Marius Kleidl <marius@transloadit.com>, HTTP Working Group <ietf-http-wg@w3.org>
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Subject: Re: Resumable Upload draft updates
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On Thu, Jul 25, 2024 at 12:58 PM Lucas Pardue <lucas@lucaspardue.com> wrote:

> Integrity using standardized  HTTP digests is described in
> https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-resumable-upload-04#name-integrity-digests.
> Integrity for parts, or whole is covered by the Content-Digest or
> Repr-Digest.
>
> During the standardisation of RFC 9530, we did a survey and found many of
> these upload services tend to use the Content-MD5 field to some extent,
> which is sad because it was obsoleted by RFC 7231 due to implementation
> inconsistencies.
>

Ah, ok. I didn't know that one got finished. This sounds like a fine
approach. Here's the Amazon way (for other readers, sounds like the authors
have made an informed decision):

https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html

Not necessarily MD5, but it can be. I think a lot of those applications
don't really care about standardization, because they expect people to use
their client SDKs anyway.

thanks,
Rob

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