Re: [media-types] Feedback on a potential media type for upload chunks

["Martin J. Dürst" <[e-mail]>]

Hello Marius,

Your proposal seems to make sense. Looking at the 
application/vnd.adobe.partial-upload, I'd suggest that you use only one 
parameter for the final type, rather than what they have (e.g. 
final_type=video, final_subtype=mp4). But I'm not even sure such a 
parameter is needed, because the partiality is purely in terms of a bit 
range if I understand correctly.

Regards,   Martin.


On 2024-02-27 04:01, Marius Kleidl wrote:
> Dear working group,
> 
> in the HTTP working group, we are discussing a draft for resumable uploads
> over HTTP (
> https://datatracker.ietf.org/doc/draft-ietf-httpbis-resumable-upload/).
> Essentially, for each file that should be uploaded, a new upload resource
> is created on the server. The client can then append data to this upload
> resource by sending a PATCH request. If the transfer gets interrupted, the
> client can query the upload resource's current offset and then resume the
> upload by appending the remaining data using another PATCH request.
> 
> As required by RFC 5789, PATCH requests must include a media type to
> describe the message content. In the case of resumable uploads, the content
> is just a partial chunk from the file to be uploaded without any additional
> data included in the message content (no offset or length value). This
> chunk might be textual or binary depending on the file that should be
> uploaded (e.g. text file or video).
> 
> I didn't find a registered media type in the standards tree which matches
> those semantics. However, the vendor tree includes
> application/vnd.adobe.partial-upload (
> https://www.iana.org/assignments/media-types/application/vnd.adobe.partial-upload),
> which was registered by Adobe in 2009 for uploads in their web
> applications. Its intention seems to align with the content included in
> PATCH requests for resumable uploads.
> 
> Therefore, I am thinking about a standardized media type to describe
> partial chunks from an upload, such as application/partial-upload or
> application/upload-chunk and would love any feedback on that idea.
> 
> Best regards
> Marius Kleidl
> 
> 
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