Http status code and reason message

Http header use http status to know what’s going on with the procceses of a request and send a response composed by

Status-Line;
(( general-header; response-header; | entity-header )
);
[ message-body ];

1xx: Informational – Request received, continuing process

2xx: Success – The action was successfully received, understood, and accepted

3xx: Redirection – Further action must be taken in order to complete the request

4xx: Client Error – The request contains bad syntax or cannot be fulfilled

5xx: Server Error – The server failed to fulfill an apparently valid request

Status code Table