• Evaluate request preconditions before processing Range headers when serving a NamedFile.
• Ignore Range headers for methods other than GET when serving a NamedFile.
• Ignore If-Unmodified-Since when If-Match is present when serving a NamedFile.
• Respond with 412 Precondition Failed for matching If-None-Match on methods other than GET and HEAD when serving a NamedFile.
• Ignore If-Modified-Since on methods other than GET and HEAD when serving a NamedFile.
• Accept case-insensitive byte range units and ignore unknown range units when serving a NamedFile.