/api/v1 returns `application/json; charset=utf8` instead of `utf-8`

[0x6d61726b]

• Gitea version: 1.14.0+dev-629-gd1353e1f7
• Operating system: Windows 10
• Can you reproduce the bug at https://try.gitea.io:
  • Yes: https://try.gitea.io/api/v1/version
  • No

Description

When decoding the response from https://try.gitea.io/api/v1/version with .NET code _responseContent = await _httpResponse.Content.ReadAsStringAsync().ConfigureAwait(false); an exception is thrown because the charset utf8 is invalid. The Gitea test server responds with the following HTTP headers:

Content-Length: 40
Content-Type: application/json; charset=utf8

According to the W3C, which is referring to the IANA the charset is specified as UTF-8. When manually modifying the received header to application/json; charset=utf-8, decoding works fine and no exception is thrown.

When working with my local test server, which is behind a reverse-proxy, the API is also working fine, because the proxy is "sanitizing" the character set:

content-type: application/json; charset=UTF-8
content-encoding: gzip

If you agree with my observation that the charset should be UTF-8 or utf-8 (containing a dash), please consider changing the character set for one of the upcoming releases to be standard compliant.

Without any further knowledge about Gitea or golang, two of the possibly affected locations are:

gitea/modules/context/context.go

Line 359 in 99b7af6

ctx.Resp.Header().Set("Content-Type", "application/json;charset=utf8")

gitea/modules/context/context.go

Line 324 in 99b7af6

ctx.Resp.Header().Set("Content-Type", "text/plain;charset=utf8")

[0x6d61726b]

Thanks a lot for providing the fix so quickly. I have tested and verified it working with Gitea 1.14.0+dev-642-g0e0424c8e.