200 OK
400 Bad Request
401 Authorization Required
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Time-out
409 Conflict
410 Gone
411 Length Required
412 Precondition Failed
413 Request Entity Too Large
414 Request-URI Too Large
415 Unsupported Media Type
417 Expectation Failed
422 Unprocessable Entity
423 Locked
426 Upgrade Required
500 Internal Server Error
502 Bad Gateway
503 Service Temporarily Unavailable
504 Gateway Time-out
505 HTTP Version Not Supported
506 Variant Also Negotiates
507 Insufficient Storage