rfc2617 [1] specifically states that the 'Basic' token should be case-insensitive, but SwitchYard is rejecting requests that use 'BASIC' instead of 'Basic'.

This is causing a compatibility issue for a customer that relies upon the behavior previously noted with SOA-P. (Case insensitive, per the spec.)

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1.2 Access Authentication Framework

HTTP provides a simple challenge-response authentication mechanism
that MAY be used by a server to challenge a client request and by a
client to provide authentication information. It uses an extensible,
case-insensitive token to identify the authentication scheme.......
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[1] https://www.ietf.org/rfc/rfc2617.txt