HTTP状态码

常见的

• 200 – OK，服务器成功返回网页
  - Standard response for successful HTTP requests.
• 301 – Moved Permanently（永久跳转），请求的网页已永久跳转到新位置。
  - This and all future requests should be directed to the given.
• 403 – Forbidden（禁止访问）,服务器拒绝请求
  - forbidden request (matches a deny filter) => HTTP 403
  - The request was a legal request, but the server is refusing to respond to it.
• 404 – Not Found,服务器找不到请求的页面。
  - The requested resource could not be found but may be available again in the future.
• 500 – Internal Server Error（内部服务器错误）
  - internal error in haproxy => HTTP 500
  - A generic error message, given when no more specific message is suitable.
• 502 – Bad Gateway（坏的网关）,一般是网关服务器请求后端服务时，后端服务没有按照http协议正确返回结果。
  - the server returned an invalid or incomplete response => HTTP 502
  - The server was acting as a gateway or proxy and received an invalid response from the upstream server.
• 503 – Service Unavailable（服务当前不可用）,可能因为超载或停机维护。
  - no server was available to handle the request => HTTP 503
  - The server is currently unavailable (because it is overloaded or down for maintenance).
• 504 – Gateway Timeout（网关超时）,一般是网关服务器请求后端服务时，后端服务没有在特定的时间内完成服务。
  - the server failed to reply in time => HTTP 504
  - The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.

其他

• 100 : Continue
• 101 : Switching Protocols
• 102 : Processing
• 200 : OK
• 201 : Created
• 202 : Accepted
• 203 : Non-Authoritative Information
• 204 : No Content
• 205 : Reset Content
• 206 : Partial Content
• 207 : Multi-Status
• 226 : IM Used
• 300 : Multiple Choices
• 301 : Moved Permanently
• 302 : Found
• 303 : See Other
• 304 : Not Modified
• 305 : Use Proxy
• 306 : Reserved
• 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
• 422 : Unprocessable Entity
• 423 : Locked
• 424 : Failed Dependency
• 426 : Upgrade Required
• 500 : Internal Server Error
• 501 : Not Implemented
• 502 : Bad Gateway
• 503 : Service Unavailable
• 504 : Gateway Timeout
• 505 : HTTP Version Not Supported
• 506 : Variant Also Negotiates
• 507 : Insufficient Storage
• 510 : Not Extended