if( !requestResponse.hasResponse() )
{
 return false;
}

String[] standardHeaders = {
 "accept-patch",
 "accept-ranges",
 "access-control-allow-credentials",
 "access-control-allow-headers",
 "access-control-allow-methods",
 "access-control-allow-origin",
 "access-control-expose-headers",
 "access-control-max-age",
 "age",
 "allow",
 "alt-svc",
 "cache-control",
 "clear-site-data",
 "connection",
 "content-disposition",
 "content-encoding",
 "content-language",
 "content-length",
 "content-location",
 "content-range",
 "content-security-policy",
 "content-transfer-encoding",
 "content-type",
 "cross-origin-embedder-policy",
 "cross-origin-opener-policy",
 "cross-origin-resource-policy",
 "date",
 "delta-base",
 "etag",
 "expect-ct",
 "expires",
 "feature-policy",
 "host",
 "im",
 "keep-alive",
 "last-modified",
 "link",
 "location",
 "pragma",
 "proxy-authenticate",
 "public-key-pins",
 "referrer-policy",
 "retry-after",
 "server",
 "set-cookie",
 "strict-transport-security",
 "tk",
 "trailer",
 "transfer-encoding",
 "upgrade",
 "vary",
 "via",
 "warning",
 "www-authenticate",
 "x-content-type-options",
 "x-frame-options",
 "x-permitted-cross-domain-policies",
 "x-xss-protection"
};

List headersList = Arrays.asList(standardHeaders);

var headers = requestResponse.response().headers();

List unexpectedHeaders = new ArrayList();

for( var header : headers ) {
    var headerName = header.name().toLowerCase();
 if( !headersList.contains( headerName ) ) {
  unexpectedHeaders.add( headerName );
    }    
}

if( unexpectedHeaders.size() > 0 ) {
 requestResponse.annotations().setHighlightColor( HighlightColor.GRAY );  
 requestResponse.annotations().setNotes(
     "Non-standard Headers: " + String.join( ",", unexpectedHeaders )
    );
}
else {
    // Maybe don't trample on existing Notes in the future??
    requestResponse.annotations().setHighlightColor( HighlightColor.NONE );
    requestResponse.annotations().setNotes("");
}

return true;

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