Description
Expected Behaviour
One expects the default/fallback behaviour to correctly assemble UTF-8 multibyte characters in the request body.
Actual Behaviour
The default/fallback behaviour incorrectly assembles requests that exceed the input stream chunk size. Multibyte characters that straddle chunks are incorrectly parsed, resulting in replacement characters or arbitrary single byte characters.
Example: https://github.com/graphql/graphql-http/blob/main/src/use/http.ts#L144-L146
Debug Information
Send an HTTP request with a variable assigned to a large number of fx "å" that exceeds the request body stream high-water mark. The value passed to the schema will be intermittently corrupted.
Further Information
It appears as though simply calling req.setEncoding("utf8"); is enough to address the issue.