HTTP State code

Code	Infomation	Range	Description
1xx	Informational	100, 101	100: Continue 101: Switching Protocols
2xx	Successful	200~206	201: Created 202: Accepted (대기열 긴 경우, 요청은 받았어! ^^ 이 용도..)
3xx	Redirection	300~307	301: Moved Permanently 302: Found (이전 Moved Temporarily) 307: Temporary Redirect (Recommaned) 308: Permanent Redirect (Recommaned)
4xx	Client Error	400~417	400: Bad Request (구문 인식 불가) 403: Forbidden (금지됨) 404: Not found
5xx	Server Error	500~505	500: 서버 오류