Empty responses should not be compressed #3364
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When returning empty responses, such as
Response(status: .ok)and the browser has sentAccept-Encoding: gzip, deflate, br, zstdheaders, Vapor should not compress responses.When compression is enabled on empty responses, some compression encodings, such as
deflate, end up returning 8 bytes of data, so the final response that the browser receives hasContent-Length == 8, but with no body. This ends up erroring withnet::ERR_CONTENT_LENGTH_MISMATCHon the browser side.