ZnMimeType/MIMEHeaderValue and loose of informations

[astares]

Typically in HTTP there is an accept header to communicate about the mime types the client would accept.

When I get a client request from a browser the ACCEPT header part for a simple GET typically looks like this:

text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7

for Chrome.

When I use

ZnMimeType fromString: 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7'

or

MIMEHeaderValue  fromMIMEHeader: 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7'

the info about the images is lost

I'm not too deep in the RFCs - maybe @svenvc knows more

[astares]

see https://www.geeksforgeeks.org/http-headers-accept/

[gcotelli]

Well, the accept header value is not necessarily a mime type but a mime type list. So I don't expect that ZnMimeType can parse the header value. For the other class I don't know.

On Thu, Feb 8, 2024, 12:50 Astares @.***> wrote:

see https://www.geeksforgeeks.org/http-headers-accept/

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[svenvc]

Interesting, like @gcotelli says, it is a list (or a multi-valued header).

You could parse this as follows:

input := 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
'.
($, split: input) collect: [ :each | each asMIMEType ]

But there is indeed a problem in how this is handled further on (it is assumed to be single valued, probably because that was good enough at the time).

I remember vaguely that I once did something with these q (qualities), but I can't find it anymore.

I will think about this a bit more.