image/svg+xml some text some text last_modified ProvideCallback ProvideCallback some text conneg multiple_choices resource_exists generate_etag expires has range? resource provides ranges? has if-range? requested range provided? range_satisfiable automatic range? true true true true false, or true true false false false false false false false no match error producingautomaticranged response middlewares true true cond 300 multiple choices 200 OK automaticranged response strong etag match 206 partial content RangeCallback 206 partial content has if-match? false previously_existed 404 not found false moved_permanently 412 precondition failed true true* false 301 moved permanently moved_temporarily true* false 307 moved temporarily 410 gone 416 not satisfiable