[Repo Assist] fix: change HTTP response default encoding from ISO-8859-1 to UTF-8 (Closes #1251)#1758
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…loses #1251) ResponseDefaultEncoding now defaults to UTF-8, matching System.Net.Http.HttpClient behaviour. RFC 2616 specified ISO-8859-1 but modern servers and browsers default to UTF-8; the old default caused garbled output when fetching UTF-8 content without an explicit charset in the Content-Type response header. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Closes #1251
Supersedes #1754 (that PR had a merge conflict in
RELEASE_NOTES.mdafter #1756 was merged and bumped to 8.1.11; this is a clean rebase onto currentmainwith version bumped to 8.1.12).Also supersedes #1717.
Root Cause
HttpEncodings.ResponseDefaultEncodingwas set to ISO-8859-1, following RFC 2616 §3.7.1. However, modern HTTP servers, browsers, andSystem.Net.Http.HttpClientall default to UTF-8 in practice when nocharsetis specified in theContent-Typeresponse header. This caused garbled characters when fetching UTF-8 content from servers that don't include an explicit charset.@dsymeendorsed this fix: "Agreed we should do the same as HttpClient and do this."Changes
src/FSharp.Data.Http/Http.fs—ResponseDefaultEncodingchanged fromEncoding.GetEncoding("ISO-8859-1")toEncoding.UTF8; doc comment updatedsrc/FSharp.Data.DesignTime/{Csv,Json,Xml,Html}Provider.fs—EncodingXML doc param updated to reflect new defaulttests/FSharp.Data.Core.Tests/HttpEncodings.fs— updated test to expectutf-8RELEASE_NOTES.md— version bump to 8.1.12src/AssemblyInfo*.fs— version bumped to 8.1.12The existing
responseEncodingOverrideparameter remains available for callers who need to force ISO-8859-1.Test Status
dotnet test tests/FSharp.Data.Core.Tests/ --filter HttpEncodings— 9 passed (including the updatedResponseDefaultEncoding returns UTF-8test)