https://tools.ietf.org/html/rfc2616
Method
The Method token indicates the method to be performed on the resource identified by the Request-URI. The method is case-sensitive.
Method = "OPTIONS" ;Section 9.2| "GET" ;Section 9.3| "HEAD" ;Section 9.4| "POST" ;Section 9.5| "PUT" ;Section 9.6| "DELETE" ;Section 9.7| "TRACE" ;Section 9.8| "CONNECT" ;Section 9.9| extension-method extension-method = token
Status-Code
The first digit of the Status-Code defines the class of response. The last two digits do not have any categorization role. There are 5 values for the first digit:
- 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 =
"100" ;Section 10.1.1: Continue | "101" ;Section 10.1.2: Switching Protocols
| "200" ;Section 10.2.1: OK | "201" ;Section 10.2.2: Created | "202" ;Section 10.2.3: Accepted | "203" ;Section 10.2.4: Non-Authoritative Information | "204" ;Section 10.2.5: No Content | "205" ;Section 10.2.6: Reset Content | "206" ;Section 10.2.7: Partial Content
| "300" ;Section 10.3.1: Multiple Choices | "301" ;Section 10.3.2: Moved Permanently | "302" ;Section 10.3.3: Found | "303" ;Section 10.3.4: See Other | "304" ;Section 10.3.5: Not Modified | "305" ;Section 10.3.6: Use Proxy | "307" ;Section 10.3.8: Temporary Redirect
| "400" ;Section 10.4.1: Bad Request | "401" ;Section 10.4.2: Unauthorized | "402" ;Section 10.4.3: Payment Required | "403" ;Section 10.4.4: Forbidden | "404" ;Section 10.4.5: Not Found 请求资源不存在 | "405" ;Section 10.4.6: Method Not Allowed | "406" ;Section 10.4.7: Not Acceptable| "407" ;Section 10.4.8: Proxy Authentication Required | "408" ;Section 10.4.9: Request Time-out | "409" ;Section 10.4.10: Conflict | "410" ;Section 10.4.11: Gone | "411" ;Section 10.4.12: Length Required | "412" ;Section 10.4.13: Precondition Failed | "413" ;Section 10.4.14: Request Entity Too Large | "414" ;Section 10.4.15: Request-URI Too Large | "415" ;Section 10.4.16: Unsupported Media Type | "416" ;Section 10.4.17: Requested range not satisfiable | "417" ;Section 10.4.18: Expectation Failed
| "500" ;Section 10.5.1: Internal Server Error内部服务器错误 | "501" ;Section 10.5.2: Not Implemented | "502" ;Section 10.5.3: Bad Gateway | "503" ;Section 10.5.4: Service Unavailable | "504" ;Section 10.5.5: Gateway Time-out | "505" ;Section 10.5.6: HTTP Version not supported | extension-code
