HTTP status Code Full solution

1** (Information Class): Indicates receipt of the request and continues processing
100--customer must continue to make a request
101--client requires server to convert HTTP protocol version on request

2** (Successful response): Indicates that the action was successfully received, understood, and accepted
200--indicates that the request was successfully completed and the requested resource was sent back to the client
201--prompt to know the URL of the new file
202--accepted and processed, but processing not completed
203--return information is indeterminate or incomplete
204--request received, but return information is empty
205--the server has completed the request, the user agent must reset the files that are currently viewed
206--server has completed a partial user's GET request

3** (redirect Class): To complete a specified action, you must accept further processing
300--requested resources can be obtained in multiple places
301--This page is permanently transferred to another URL
The 302--requested page is moved to a new address, but the client access continues through the original URL address, redirected, and the new URL will be returned in the location in response, and the browser will send a new request using the new URL.
303--advising customers to access other URLs or access methods
304--since the last request, the requested Web page has not been modified, and when the server returns this response, the Web page content is not returned, which indicates that the last document has been cached and can continue to use
The resource requested by 305--must be obtained from the address specified by the server
306--code used in previous versions of HTTP, no longer used in the current version
307--declaring the requested resource temporary deletion

4** (Client Error Class): Request contains error syntax or does not execute correctly
400--client requests have syntax errors and cannot be understood by the server
401--request is not authorized, this status code must be used with the Www-authenticate header field
HTTP 401.1-Unauthorized: Logon failed
HTTP 401.2-Unauthorized: Server configuration issues cause logon failure
HTTP 401.3-acl prohibit access to resources
HTTP 401.4-Unauthorized: Authorization denied by filter
HTTP 401.5-Unauthorized: ISAPI or CGI authorization failed
402--reserved valid Chargeto header response
403--Forbidden, the server receives the request, but refuses to provide the service
HTTP 403.1 Forbidden: Disable executable access
HTTP 403.2-Forbidden: Disable Read access
HTTP 403.3-Forbidden: write-Access Forbidden
HTTP 403.4-No access: SSL required
HTTP 403.5-No access: SSL 128 required
HTTP 403.6-Forbidden: IP address denied
HTTP 403.7-Forbidden: Require client certificate
HTTP 403.8-Forbidden: Prohibit site access
HTTP 403.9-No access: too many users connected
HTTP 403.10-No access: Invalid configuration
HTTP 403.11-No access: Password change
HTTP 403.12-No access: Mapper denied access
HTTP 403.13-No access: Client certificate has been revoked
HTTP 403.15-No access: Too many Client access licenses
HTTP 403.16-Forbidden: Client certificate is untrusted or invalid
HTTP 403.17-Forbidden: Client certificate has expired or is not yet valid
404--a 404 error indicates that the server can be connected, but the server cannot get the requested Web page and the request resource does not exist. Eg: the wrong URL was entered
405--the method defined by the user in the Request-line field does not allow
406--request resource is inaccessible based on accept drag sent by user
407--similar to 401, the user must first be authorized on the proxy server
408--client does not complete the request within the user-specified time of starvation
409--the current resource state, the request cannot be completed
This resource is no longer available on the 410--server and has no further reference address
411--server rejects user-defined Content-length property requests
412--one or more request header fields are incorrect in the current request
413--the requested resource is greater than the size allowed by the server
414--The requested resource URL is longer than the length allowed by the server
415--requesting a resource does not support requesting an item format
The 416--request contains a range request header field that does not have a range indication value within the current request resource scope, and the request does not contain a If-range request header field
The 417--server does not meet the expectations specified by the request Expect header field, and if it is a proxy server, the next level of server may not meet the request length.

5** (Service-side error Class): The server does not correctly execute a correct request
HTTP 500-The server encountered an error and could not complete the request
HTTP 500.100-Internal Server error-ASP error
HTTP 500-11 Server shutdown
HTTP 500-12 Application Restart
HTTP 500-13-Server Too busy
HTTP 500-14-Application not valid
HTTP 500-15-Request Global.asa not allowed
Error 501-Not implemented
HTTP 502-Gateway Error
HTTP 503: The server is currently unusable due to overloading or downtime and may return to normal after a period of time

HTTP status Code Full solution