Hello community. I have a real problem here, can't seem to find info since all I can find out about this concerns the client side and not the server side of ktor. I have upgrade ktor from 1.6 to 2.2. This resulted in every json request response from my server having the

Content-Type: application/json

header instead of the

Content-Type: application/json; charset=UTF-8

which it had before. This causes my flutter app to display the wrong characters since it decodes everything all wrong. How do I fix this? Why is this change not documented? My entire API is broken.

application/json; charset=UTF-8

isn’t a valid content type header. See also https://youtrack.jetbrains.com/issue/KTOR-3799

Okay, thats good to know. So ktor returned invalid content type for several years before? I'll guess I have to check on flutter side then?

Yes 👍

found this

Sounds like the problem is that

convert.jsonDecode

takes a String, which has already been decoded (using, potentially, the wrong encoding). Ideally there would be a method that takes the bytes and decodes them directly to JSON, without needing to go via a String.

alright, seems like its on the flutter side at least. I cannot keep track of all of these standards and stuff man, thank you so much for the info! Interesting change in ktor 1 to 2 though. But its a case of there it was wrong all the time and the reason it doesnt work for me is because my app is badly decoding right? hehe

I think they have misinterpreted RFC-2616 😄 it says

When no explicit charset parameter is provided by the sender, media subtypes of the “text” type are defined to have a default charset value of “ISO-8859-1"

which is not only obsolete but also specifically doesn’t apply to application/json. That said, it’s a reasonable default if the user specifically wants to get the body as a String.

yep,

jsonDecode(utf8.decode(response.bodyBytes))

solves it for me