[jira] [Created] (FLINK-5109) Invalid Content-Encoding Header in REST API responses

[Shang Yuanchun (Jira)]

Móger Tibor László created FLINK-5109:
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             Summary: Invalid Content-Encoding Header in REST API responses
                 Key: FLINK-5109
                 URL: https://issues.apache.org/jira/browse/FLINK-5109
             Project: Flink
          Issue Type: Bug
          Components: Web Client, Webfrontend
    Affects Versions: 1.2.0
            Reporter: Móger Tibor László


On REST API calls the Flink runtime responds with the header Content-Encoding, containing the value "utf-8". According to the HTTP/1.1 standard this header is invalid. ( https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.5 )
Possible acceptable values are: gzip, compress, deflate. Or it should be omitted.
The invalid header may cause malfunction in projects building against Flink.

The invalid header may be present in earlier versions aswell.

Proposed solution: Remove lines from the project, where CONTENT_ENCODING header is set to "utf-8". (I could do this in a PR.)

Possible solution but may need further knowledge and skills than mine: Introduce a content-encoding. Doing so may need some configuration beacuse then Flink would have to encode the responses properly (even paying attention to the request's Accept-Encoding headers).



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