[jboss-jira] [JBoss JIRA] (WFLY-13333) Openapi endpoint returns empty file if schema definition contains non ASCII character

[Márk Petrényi (Jira)]

Márk Petrényi created WFLY-13333:
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             Summary: Openapi endpoint returns empty file if schema definition contains non ASCII character
                 Key: WFLY-13333
                 URL: https://issues.redhat.com/browse/WFLY-13333
             Project: WildFly
          Issue Type: Bug
          Components: MP OpenAPI
    Affects Versions: 19.0.0.Final
            Reporter: Márk Petrényi
            Assignee: Paul Ferraro


Currently the {{/openapi}} endpoint returns empty file if the OpenAPI schema definition contains non ASCII characters (ie. accented letters like á,í...).
I extended the openapi quickstart for demonstration: https://github.com/petrenyi-mark/quickstart/commit/44096980ff36ff2655859f9b10f8d0bd4c76bfbb

It seems like it is related to the content-length, since in {{OpenAPIHttpHandler}} the content-length header is set by {{String.length()}} (line 125). However before the response is actually returned, undertow validates that the actual content-length based on ByteBuffer size is not greater then the one declared in the response header. Since non ASCII characters are usually represented by 2 bytes undertow will fail, thus no content will be returned.

In {{OpenAPIHttpHandler}} setting {{string.getBytes(charset).length}} as Conetnt-Length instead of {{String.length()}} would likely resolve this issue.



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