Status Codes
The Status-Code element is a 3-digit integer result code of the attempt to understand and satisfy the request.
These codes are fully defined in these pages:
The Reason-Phrase is intended to give a short textual description of the Status-Code. The Status-Code is intended for use by automata and the Reason-Phrase is intended for the human user. The client is not required to examine or display the Reason-Phrase.