HTTP return codes

A status code that is returned from the Web server (HTTP server) to the client program, typically the browser. It indicates the status of the request and reports errors and necessary information so that the client software can respond.

    Code     Meaning

    1xx CODES - INFORMATION ONLY

    100 - Continue; part of request received
    101 - OK to switch protocols


    2xx CODES - SUCCESS

    200 - OK; all requested info returned
    201 - Created; request filled
    202 - Accepted; request received
    203 - Source unknown; info came from 3rd party
    204 - No new content; nothing to send back
    205 - Reset content; OK to clear form
    206 - Request only partially filled


   3xx CODES - REDIRECTION

   300 - Header for 3xx codes
   301 - Moved permanently; use new URL
   302 - Moved temporarily; use same URL
   303 - Redirected
   304 - Not modified since; use cached copy
   305 - Use proxy; URL is provided


   4xx CODES - FAILURE

   400 - Did not understand request; try again
   401 - Authorization required; needs password
   402 - Payment required; needs payment data
   403 - Request refused; may not give reason
   404 - Not found; not sure of reason (typo, etc.)
   406 - Content type not acceptable to request
   407 - Browser must authenticate itself
   408 - Timed out; send request again
   409 - Update conflict; explanation provided
   410 - Not found; resource permanently gone
   411 - Content length missing in request
   412 - Conditions on request failed
   413 - Request too long to process
   414 - Resource address too long to process
   415 - Unsupported media type; bad format


   5xx CODES - SERVER ERRORS

   500 - Internal server error
   501 - Server cannot fill request
   502 - Server cannot process gateway request
   503 - Server overloaded or service over limits
   504 - Gateway or proxy server timed out
   505 - HTTP version not supported in server