fix(codeapi): add UTF-8 charset defaults to busboy in upload routes - #65
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danny-avila merged 1 commit intoSep 2, 2026
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The /upload and /upload/batch endpoints in router.ts construct busboy without specifying defCharset or defParamCharset. Busboy defaults to Latin-1 (ISO-8859-1) for multipart parameter decoding, which causes non-ASCII filenames (e.g. Japanese characters) to be garbled. file-server.ts already sets defCharset: 'utf8' and defParamCharset: 'utf8' (lines 336-337), but router.ts was missing the same options — an asymmetry that surfaces as mojibake when uploading files with non-ASCII names through the API gateway. Add both options to the two busboy() calls in router.ts for consistency with file-server.ts.
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danny-avila
approved these changes
Sep 2, 2026
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Problem
Non-ASCII filenames (e.g. Japanese characters like
日本語テスト.md) uploadedthrough the
/uploadand/upload/batchendpoints are garbled becausebusboydefaults toLatin-1(ISO-8859-1) for parameter charset decoding.For example,
日本語becomes日本語.Root Cause
The
file-server.tsalready setsdefCharset: 'utf8'anddefParamCharset: 'utf8'when constructing busboy (line 336-337), butthe same options are missing from the two
busboy()calls inrouter.ts:/uploadendpoint (line ~365)/upload/batchendpoint (line ~575)This asymmetry causes filenames to be correctly decoded in the file-server
path but garbled in the API gateway upload path.
Fix
Add
defCharset: 'utf8'anddefParamCharset: 'utf8'to bothbusboy()calls in
router.ts, consistent with the existingfile-server.tsconfiguration.Testing
Verified by uploading files with Japanese filenames (e.g.
Github_Code_Reviewer_日本語_-saved.md)through the
/uploadendpoint and confirming the filename is correctly preserved without garbling.Changes
service/src/service/router.ts: AddeddefCharset: 'utf8'anddefParamCharset: 'utf8'to 2 busboy constructor calls