According to RFC 7230, "each header field consists of a case-insensitive field name followed by a colon (":"), optional leading whitespace, the field value, and optional trailing whitespace.".
I migrated from nginx to h2o web server. At the moment, only the second-level domain gitnote.eu (the TLDs and other SLD are not yet configured). For HSTS, I added in h2o.conf: header.add: "strict-transport-security: max-age=15724800; includeSubDomains" but it seems that SSL Labs only supports the HSTS header in the common uppercase writing: Strict-Transport-Security. So, I ask you to support the lowercase writing.
HSTS is not detected even if HSTS is enabled.
Could you please fix HSTS detection?