http request method and response codes

 ============================

HTTP_Method
============================

HTTP Method	Action	Examples
GET	Obtain information about a resource	http://example.com/api/orders
		(retrieve order list)
GET	Obtain information about a resource	http://example.com/api/orders/123
		(retrieve order #123)
POST	Create a new resource	http://example.com/api/orders
		(create a new order, from data provided with the request)
PATCH	Update a resource	PATCH 将来会比 PUT用的更多,PUT为完整代替, PATCH支持partial replace
PUT	Replace a whole resource	http://example.com/api/orders/123
		(update order #123, from data provided with the request)
DELETE	Delete a resource	http://example.com/api/orders/123
		(delete order #123)

============================
HTTP_CODES
============================
 参见: http://en.wikipedia.org/wiki/List_of_HTTP_status_codes
 1xx Informational
 2xx Success
 3xx Redirection
 4xx Client Error
 5xx Server Error

 具体有:

 100: 'Continue',
 101: 'Switching Protocols',
 200: 'OK',
 201: 'Created',
 202: 'Accepted',
 203: 'Non-Authoritative Information',
 204: 'No Content',
 205: 'Reset Content',
 206: 'Partial Content',
 300: 'Multiple Choices',
 301: 'Moved Permanently',
 302: 'Found',
 303: 'See Other',
 304: 'Not Modified',
 305: 'Use Proxy',
 306: '(Unused)',
 307: 'Temporary Redirect',
 400: 'Bad Request',
 401: 'Unauthorized',
 402: 'Payment Required',
 403: 'Forbidden',
 404: 'Not Found',
 405: 'Method Not Allowed',
 406: 'Not Acceptable',
 407: 'Proxy Authentication Required',
 408: 'Request Timeout',
 409: 'Conflict',
 410: 'Gone',
 411: 'Length Required',
 412: 'Precondition Failed',
 413: 'Request Entity Too Large',
 414: 'Request-URI Too Long',
 415: 'Unsupported Media Type',
 416: 'Requested Range Not Satisfiable',
 417: 'Expectation Failed',
 418: "I'm a teapot",
 428: 'Precondition Required',
 429: 'Too Many Requests',
 431: 'Request Header Fields Too Large',
 500: 'Internal Server Error',
 501: 'Not Implemented',
 502: 'Bad Gateway',
 503: 'Service Unavailable',
 504: 'Gateway Timeout',
 505: 'HTTP Version Not Supported',
 511: 'Network Authentication Required'