HTTP protocol Status Code summary

First, the HTTP method

Method name	Description
Get	Sends a FETCH request, and the server responds with a head and body section
Post	Sends a request for input data, and the server responds with a head and body section
Head	The server responds with only the head part
Put	Send a file (resource) to the server
Trace	In response to the request, the destination server will bring the original request message in the main body, for the client to compare the changes of the data with the firewall, proxy, gateway, etc.
Options	Request server informs the Web server of supported features
Delete	Requesting the server to delete the resource specified by the URL

Second, HTTP common status code 1. 100~199 Information Status Code

Status code	Description
101 Switching protocols	For protocol switching, the upgrade response header is implemented, and the server switches to the specified protocol after the upgrade response is sent out. such as: http1.0 upgrade to http1.1 and so on.

2.200~299成 Function Status Code

Status code	Description
Ok	The request was successful and the desired response header and data body are returned with this response
201 Created	The request has been accepted and the new resource has been established (to the handler) based on the requested requirement.
202 Accepted	The request has been accepted by the server but has not yet been processed, and the Response 202 status code is here to allow the client to send additional requests.
203 non-authoritative Information	The server successfully processes the request, but the returned entity header meta-information is not from a valid determined collection on the original server, but from a local or third-party copy. The current information may be a subset or a superset of the original version
204 No Content	Request processing complete, response only to entity header, no entity content, client can not reset view
205 Reset Content	Consistent with 204 response, but requires client reset response view
206 Partial content	A partial response, a breakpoint continuation, or a large file chunk pass is the response header

3.300 ~ 399 REDIRECT Status code

Status code	Description
Multiple Choices	The requested resource has a selection of feedback information, redirected based on the header meta-information
301 Moved Permanently	Permanent redirect, redirect URL at the location that should be in the head of the response, if no redirect URL should be included in the response body, or if it is not a get and head request, the browser will disallow redirection unless the user acknowledges; http/1.0 sends a POST request. The response is 301, and the next redirect becomes a GET request
302 Move temporarily	Temporary redirect, other with 3,011 samples. But Cache-control or expires headers can be cached
303 See other	The current request is on another URL, and the client should not cache with get,303, the second request can; http/1.1 processing 303 is consistent with 302 (most browsers)
304 Not modified	The client sends a conditional GET request that returns 304 for the cache
305 Use Proxy	The specified resource is on the specified proxy, and the location contains the URL of the proxy
307 Temporary redirect	With 3,021

4.400~499 Error Status Code

status Code /td>	description
400 bad Requr EST	The client sent an incorrect request
	requires clients to authenticate themselves before accessing this resource
	description request rejected by the server, this class generally does not want to explain why
404 not found	Resource not found
405 method n OT allowed	The requested method that is sent is not supported by the service-side resource, and the response should include allow header
	clients can specify what resources they are willing to accept if the server cannot provide a return of this status code

5.500~599 Status Code

Status code	Description
Internal server Error	Server Internal Error
501 Not implemented	Client requests exceeding the capabilities of the server (e.g., the server cannot support client-requested methods)
502 Bad Gateway	The server that the Acting proxy gateway uses receives a pseudo-response from the next link on the request response (for example, it cannot connect to the parent's gateway)
503 Service Unavailable	The server is now unable to complete the requested processing, but will
505 HTTP Version not supported	The server does not support this Protocol version

HTTP protocol Status Code summary