List of HTTP status codes - Wikipedia, the free encyclopedia - The Diigo Meta page

• 23 Oct 15
  

  plasticcones

  BartonLee (30 Jun) Dev Web HTML_CSS_Web Design References specific reference documents

• 09 May 15
  

  bilbobaggans

  http status codes return

• 17 Apr 15
  

  Maria Fernandez Banuelos

  servef-tic http status wikipedia

• 17 Mar 15
  

  Mike Cranford

  http codes reference wikipedia

• 12 Jan 15
  

  Glen Williams
  • 305 Use Proxy (since HTTP/1.1)

     

    The requested resource is only available through a proxy, whose address is provided in the response. Many HTTP clients (such as Mozilla^[9] and Internet Explorer) do not correctly handle responses with this status code, primarily for security reasons.^[10]
• 11 Oct 14
  

  max j

  HTTP status codes

• 08 Oct 14
  

  michaelmeelis

  http reference codes status wikipedia Web webdev

• 28 Aug 14
  

  devyani7

  dgplug homework

• 25 Jul 14
  

  Bue Thastum

  http api

• 22 Jul 14
  

  Alex Jensen
• 15 Jun 14
  

  Steve Pickering

  http status codes reference web code status_codes programming webdev error redirect redirection url page address

• 04 Jun 14
  

  Daniel Winson

  security vulnerability http codes

• 04 May 14
  

  Roland

  http status codes reference errors

• 27 Apr 14
  

  Yashpal Meena
• 17 Feb 14
  

  fengjiawei2011
• 07 Jan 14
  

  jorge santos

  "500 Internal Server Error
  A generic error message, given when an unexpected condition was encountered and no more specific message is suitable"

  Erros

• 13 Nov 13
  

  April Brownie

  http

• 05 Nov 13
  

  Leoben Conoy

  http status codes wikipedia reference web development response

• 17 Oct 13
  

  damarisbq

  Lista de los codigos de Apache

  apache

• 17 Sep 13
  

  Amr Darweesh
  • 200 OK

     
  • 404 Not Found

     
  • 500 Internal Server Error

     

  1 more annotation...

• 04 Sep 13
  

  Gracy Watson
  • 402 Payment Required

     

    Reserved for future use.^[2] The original intention was that this code might be used as part of some form of digital cash or micropayment scheme, but that has not happened, and this code is not usually used. As an example of its use, however, Apple's defunct MobileMe service generated a 402 error if the MobileMe account was delinquent.^{[citation needed]} In addition, YouTube uses this status if a particular IP address has made excessive requests, and requires the person to enter a CAPTCHA.

     

    403 Forbidden

     

    The request was a valid request, but the server is refusing to respond to it.^[2] Unlike a 401 Unauthorized response, authenticating will make no difference.^[2] On servers where authentication is required, this commonly means that the provided credentials were successfully authenticated but that the credentials still do not grant the client permission to access the resource (e.g. a recognized user attempting to access restricted content).

     

    404 Not Found

     

    The requested resource could not be found but may be available again in the future.^[2] Subsequent requests by the client are permissible.

     

    405 Method Not Allowed

     

    A request was made of a resource using a request method not supported by that resource;^[2] for example, using GET on a form which requires data to be presented via POST, or using PUT on a read-only resource.
  • 408 Request Timeout

     

    The server timed out waiting for the request.^[2] According to W3 HTTP specifications: "The client did not produce a request within the time that the server was prepared to wait. The client MAY repeat the request without modifications at any later time."

     

    409 Conflict

     

    Indicates that the request could not be processed because of conflict in the request, such as an edit conflict in the case of multiple updates.^[2]

     

    410 Gone

     

    Indicates that the resource requested is no longer available and will not be available again.^[2] This should be used when a resource has been intentionally removed and the resource should be purged. Upon receiving a 410 status code, the client should not request the resource again in the future. Clients such as search engines should remove the resource from their indices. Most use cases do not require clients and search engines to purge the resource, and a "404 Not Found" may be used instead.

     

    411 Length Required

     

    The request did not specify the length of its content, which is required by the requested resource.^[2]

     

    412 Precondition Failed

     

    The server does not meet one of the preconditions that the requester put on the request.^[2]

     

    413 Request Entity Too Large

     

    The request is larger than the server is willing or able to process.^[2]

     

    414 Request-URI Too Long

     

    The URI provided was too long for the server to process.^[2] Often the result of too much data being encoded as a query-string of a GET request, in which case it should be converted to a POST request.
  • 415 Unsupported Media Type

     

    The request entity has a media type which the server or resource does not support.^[2] For example, the client uploads an image as image/svg+xml, but the server requires that images use a different format.

     

    416 Requested Range Not Satisfiable

     

    The client has asked for a portion of the file, but the server cannot supply that portion.^[2] For example, if the client asked for a part of the file that lies beyond the end of the file.^[2]

     

    417 Expectation Failed

     

    The server cannot meet the requirements of the Expect request-header field.^[2]

     

    418 I'm a teapot (RFC 2324)

     

    This code was defined in 1998 as one of the traditional IETF April Fools' jokes, in RFC 2324, Hyper Text Coffee Pot Control Protocol, and is not expected to be implemented by actual HTTP servers.

     

    419 Authentication Timeout (not in RFC 2616)

     

    Not a part of the HTTP standard, 419 Authentication Timeout denotes that previously valid authentication has expired. It is used as an alternative to 401 Unauthorized in order to differentiate from otherwise authenticated clients being denied access to specific server resources^{[citation needed]}.

     

    420 Method Failure (Spring Framework)

     

    Not part of the HTTP standard, but defined by Spring in the HttpStatus class to be used when a method failed.

     

    420 Enhance Your Calm (Twitter)

  • Not part of the HTTP standard, but returned by the Twitter Search and Trends API when the client is being rate limited.^[13] Other services may wish to implement the 429 Too Many Requests response code instead.

     

    422 Unprocessable Entity (WebDAV; RFC 4918)

     

    The request was well-formed but was unable to be followed due to semantic errors.^[4]

     

    423 Locked (WebDAV; RFC 4918)

     

    The resource that is being accessed is locked.^[4]

     

    424 Failed Dependency (WebDAV; RFC 4918)

     

    The request failed due to failure of a previous request (e.g. a PROPPATCH).^[4]

     

    424 Method Failure (WebDAV)^[14]

     

    Indicates the method was not executed on a particular resource within its scope because some part of the method's execution failed causing the entire method to be aborted.

     

     

     

    425 Unordered Collection (Internet draft)

     

    Defined in drafts of "WebDAV Advanced Collections Protocol",^[15] but not present in "Web Distributed Authoring and Versioning (WebDAV) Ordered Collections Protocol".^[16]

     

    426 Upgrade Required (RFC 2817)

     

    The client should switch to a different protocol such as TLS/1.0.^[17]

     

    428 Precondition Required (RFC 6585)

     

    The origin server requires the request to be conditional. Intended to prevent "the 'lost update' problem, where a client GETs a resource's state, modifies it, and PUTs it back to the server, when meanwhile a third party has modified the state on the server, leading to a conflict."^[18]

     

    429 Too Many Requests (RFC 6585)

     

    The user has sent too many requests in a given amount of time. Intended for use with rate limiting schemes.^[18]

     

    431 Request Header Fields Too Large (RFC 6585)
  • The server is unwilling to process the request because either an individual header field, or all the header fields collectively, are too large.^[18]

     

    444 No Response (Nginx)

     

    Used in Nginx logs to indicate that the server has returned no information to the client and closed the connection (useful as a deterrent for malware).

     

    449 Retry With (Microsoft)

     

    A Microsoft extension. The request should be retried after performing the appropriate action.^[19]

     

    Often search-engines or custom applications will ignore required parameters. Where no default action is appropriate, the Aviongoo website sends a "HTTP/1.1 449 Retry with valid parameters: param1, param2, . . ." response. The applications may choose to learn, or not.

     

    450 Blocked by Windows Parental Controls (Microsoft)

     

    A Microsoft extension. This error is given when Windows Parental Controls are turned on and are blocking access to the given webpage.^[20]

     

    451 Unavailable For Legal Reasons (Internet draft)

     

    Defined in the internet draft "A New HTTP Status Code for Legally-restricted Resources".^[21] Intended to be used when resource access is denied for legal reasons, e.g. censorship or government-mandated blocked access. A reference to the 1953 dystopian novel Fahrenheit 451, where books are outlawed.^[22]

     

    451 Redirect (Microsoft)

     

    Used in Exchange ActiveSync if there either is a more efficient server to use or the server can't access the users' mailbox.^[23]

     

    The client is supposed to re-run the HTTP Autodiscovery protocol to find a better suited server.^[24]

     

    494 Request Header Too Large (Nginx)

     

    Nginx internal code similar to 413 but it was introduced earlier.^{[25][original research?]}

     

    495 Cert Error (Nginx)

     

    Nginx internal code used when SSL client certificate error occurred to distinguish it from 4XX in a log and an error page redirection.

     

    496 No Cert (Nginx)

     

    Nginx internal code used when client didn't provide certificate to distinguish it from 4XX in a log and an error page redirection.

  • 497 HTTP to HTTPS (Nginx)

     

    Nginx internal code used for the plain HTTP requests that are sent to HTTPS port to distinguish it from 4XX in a log and an error page redirection.

     

    499 Client Closed Request (Nginx)

     

    Used in Nginx logs to indicate when the connection has been closed by client while the server is still processing its request, making server unable to send a status code back.^[26]

     

     

    5xx Server Error[edit source | editbeta]

     

    The server failed to fulfill an apparently valid request.^[2]

     

    Response status codes beginning with the digit "5" indicate cases in which the server is aware that it has encountered an error or is otherwise incapable of performing the request. Except when responding to a HEAD request, the server should include an entity containing an explanation of the error situation, and indicate whether it is a temporary or permanent condition. Likewise, user agents should display any included entity to the user. These response codes are applicable to any request method.

     

     

    500 Internal Server Error

     

    A generic error message, given when no more specific message is suitable.^[2]

     

    501 Not Implemented

     

    The server either does not recognize the request method, or it lacks the ability to fulfill the request.^[2] Usually this implies future availability (eg. a new feature of a web-service API).

     

    502 Bad Gateway

     

    The server was acting as a gateway or proxy and received an invalid response from the upstream server.^[2]

     

    503 Service Unavailable

     

    The server is currently unavailable (because it is overloaded or down for maintenance).^[2] Generally, this is a temporary state. Sometimes, this can be permanent as well on test servers.
  • 504 Gateway Timeout

     

    The server was acting as a gateway or proxy and did not receive a timely response from the upstream server.^[2]

     

    505 HTTP Version Not Supported

     

    The server does not support the HTTP protocol version used in the request.^[2]

     

    506 Variant Also Negotiates (RFC 2295)

     

    Transparent content negotiation for the request results in a circular reference.^[27]

     

    507 Insufficient Storage (WebDAV; RFC 4918)

     

    The server is unable to store the representation needed to complete the request.^[4]

     

    508 Loop Detected (WebDAV; RFC 5842)

     

    The server detected an infinite loop while processing the request (sent in lieu of 208).

     

    509 Bandwidth Limit Exceeded (Apache bw/limited extension)

     

    This status code, while used by many servers, is not specified in any RFCs.

     

    510 Not Extended (RFC 2774)

     

    Further extensions to the request are required for the server to fulfil it.^[28]

     

    511 Network Authentication Required (RFC 6585)

     

    The client needs to authenticate to gain network access. Intended for use by intercepting proxies used to control access to the network (e.g. "captive portals" used to require agreement to Terms of Service before granting full Internet access via a Wi-Fi hotspot).^[18]

     

    598 Network read timeout error (Unknown)

     

    This status code is not specified in any RFCs, but is used by Microsoft HTTP proxies to signal a network read timeout behind the proxy to a client in front of the proxy.^{[citation needed]}

     

    599 Network connect timeout error (Unknown)

     

    This status code is not specified in any RFCs, but is used by Microsoft HTTP proxies to signal a network connect timeout behind the proxy to a client in front of the proxy.^{[citation needed]}

  5 more annotations...

• 19 Jul 13
  

  Jerry Anselmi

  http reference

• 03 Jul 13
  

  hyoungx

  http codes

• 27 Jun 13
  

  Robert Kayman

  http reference codes status web webdev html w3c code wikipedia

• 13 May 13
  

  Jeremy Kao

  "Indicates that the resource has not been modified since the version specified by the request headers If-Modified-Since or If-Match.[2] This means that there is no need to retransmit the resource, since the client still has a previously-downloaded copy."

  http

  • 304 Not Modified

     

    Indicates that the resource has not been modified since the version specified by the request headers If-Modified-Since or If-Match.^[2] This means that there is no need to retransmit the resource, since the client still has a previously-downloaded copy.
  • Indicates that the resource has not been modified since the version specified by the request headers If-Modified-Since or If-Match.^[2] This means that there is no need to retransmit the resource, since the client still has a previously-downloaded copy.
  • 401 Unauthorized

     

    Similar to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided.
  • The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource.
  • 407 Proxy Authentication Required

     

    The client must first authenticate itself with the proxy.

  3 more annotations...

• 08 May 13
  

  Tina Zennand

  HTTP status codes

• 28 Mar 13
  

  ansehen http httpstatus from delicious

• 28 Jan 13
  

  Anthony Ortiz

  http reference status codes wikipedia webdev 404

• 05 Dec 12
  

  VALLINAYAGAM SUBRAMANIAN

  error codes http status web server

• 29 Nov 12
  

  Charl Cordiglia

  http reference codes status

• 01 Oct 12
  

  ahwqryeiiwye

  lists of http codes for api usage

• 19 Sep 12
  

  Kym Gross

  programming computer_ref http 2012SEP

• 21 Aug 12
  
• 02 Aug 12
  

  Jorge Gamba

  toread httpstatuscodes reference definition http features documentation processed openrasta testing howto integrationtesting

• 25 May 12
  

  Ehsan Semsar

  HTTP

• 24 Apr 12
  

  Sidney Nicholas

  code errors reference codes status Web webdev http

• 18 Apr 12
  

  nautic20

  HTTP status codes

  coding http catalog

• 11 Apr 12
  

  Matthew Campbell

  http reference codes status

• 14 Mar 12
  

  Naveen Kumar B V

  List of HTTP Status Codes

  http codes status

• 03 Feb 12
  

  http reference

• 25 Jan 12
  

  Susanne Stramm
• 16 Jan 12
  

  Bronwyn Lapham

  Tech reference

• 19 Dec 11
  

  Jorge Arévalo

  http codes

• 12 Nov 11
  

  paulrobinson68

  code webdev http error

• 09 Nov 11
  

  Alexey Tarasevich

  status_code

• 02 Nov 11
  

  Mark Serrano

  http reference codes status

• 26 Oct 11
  

  Donnie Hale

  Web Dev

• 29 Sep 11
  

  Julio Saito

  http reference status codes web programming error

• 23 Sep 11
  

  lanegreg

  "HTTP status codes"

  wikipedia http status codes

• 15 Sep 11
  

  Ilan Copelyn

  Http

• 26 Aug 11
  

  harry palmer

  http status-codes ss web-development

  • 4xx Client Error

     

    The 4xx class of status code is intended for cases in which the client seems to have erred. Except when responding to a HEAD request, the server should include an entity containing an explanation of the error situation, and whether it is a temporary or permanent condition. These status codes are applicable to any request method. User agents should display any included entity to the user. These are typically the most common error codes encountered while online.

     

     

    400 Bad Request

     

    The request cannot be fulfilled due to bad syntax.^[2]

     

    401 Unauthorized

     

    Similar to 403 Forbidden, but specifically for use when authentication is possible but has failed or not yet been provided.^[2] The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource. See Basic access authentication and Digest access authentication.

     

    402 Payment Required

     

    Reserved for future use.^[2] The original intention was that this code might be used as part of some form of digital cash or micropayment scheme, but that has not happened, and this code is not usually used. As an example of its use, however, Apple's MobileMe service generates a 402 error ("httpStatusCode:402" in the Mac OS X Console log) if the MobileMe account is delinquent.

     

    403 Forbidden

     

    The request was a legal request, but the server is refusing to respond to it.^[2] Unlike a 401 Unauthorized response, authenticating will make no difference.^[2]

     

    404 Not Found
• 05 Aug 11
  

  julian hurbur

  All Basic information about HTTP status codes which we been facing early day in web browsing

  internet marketing

• 02 Aug 11
  

  simspace

  reference codes web programming http wiki

• 07 Jul 11
  

  Luke Hay

  Complete list of HTTP response codes

  reference codes status statuscodes http

• 28 May 11
  

  Mark Johnstone

  seo learning http statuscodes

• 29 Apr 11
  

  Thomas Chaimbault

  web wikipedia

• 29 Mar 11
  

  Dan Goodwin

  http header redirect reference

• 16 Mar 11
  

  Miguel Gomez

  http status codes

• 13 Feb 11
  

  wonkalicious

  http codes

• 31 Jan 11
  

  ankitdhingra

  html

• 19 Jan 11
  

  Muthu Kumaran

  HTTP statuscodes apache

• 13 Jan 11
  

  avilay

  programming html documentation

• 09 Dec 10
  

  Marcelo Cajueiro

  http error

• 24 Nov 10
  

  Joe Potvin

  http reference status codes

• 22 Nov 10
  

  sysadmin

• 18 Nov 10
  

  web server logs Wikipedia 404

• 28 Oct 10
  

  Martinus Postma

  seaqueen

• 06 Oct 10
  

  Rui Cruz

  apache http < H3 > Recursos

• 13 Sep 10
  

  P eter

  http reference status codes web webdev

• 11 Aug 10
  

  jsuntheimer

  http http-header http-headers http-response headers http-status-codes

• 04 Aug 10
  

  krishh-y H

  418 I'm a teapot
  This code was defined as one of the traditional IETF April Fools' jokes, in RFC 2324, Hyper Text Coffee Pot Control Protocol, and is not expected to be implemented by actual HTTP servers.

• 06 Jul 10
  

  Andreas Krohn

  404 wikipedia http status code statuscode delicious

• 05 Jul 10
  

  Charles Douglass

  error

• 27 Jun 10
  

  Lukasz Bandzarewicz

  http status codes

• 03 Jun 10
  

  Laura Jacob

  http reference codes list wikipedia

• 02 Jun 10
  

  Jim Frewen

  http status codes

• 20 May 10
  

  Lance Farquhar

  httpstatuscodes

• 17 May 10
  

  http statuscode

• 07 May 10
  

  http reference

• 18 Apr 10
  

  Fabien Cadet

  HTTP protocol status codes

• 12 Apr 10
  

  Radoslaw Tomaszewski

  http http_1.1 http_header http_100 http_expect_header

• 07 Apr 10
  

  Bruno Dulcetti

  internet code error status server reference programming documentation development apache

• 08 Mar 10
  

  Paul Philippov

  This includes codes from IETF internet standards as well as unstandardised RFCs, other specifications and some additional commonly used codes.
  

  http code webdev internet reference rfc standard wikipedia web

• 24 Feb 10
  

  stachon

  http codes reference from-delicious

• 09 Feb 10
  

  lefteris grammatas

  reference http codes error

• 21 Jan 10
  

  Richard Gauthier

  programmation-ressource

• 09 Jan 10
  

  konstantin chernishov

  dev http

• 05 Jan 10
  

  Anderson Moreira

  tools Documentation Reference

• 12 Dec 09
  

  francesco d

  HTTP status codes

  http status codes

• 11 Dec 09
  

  Martin Penev

  http statuscodes

• 30 Nov 09
  

  rajsraman
• 03 Nov 09
  

  Ian Robbins

  404 301 codes status_codes error

• 03 Oct 09
  

  Sean O'Halpin

  @http

• 22 Sep 09
  

  the man

  HTTP

• 14 Jul 09
  

  usingsystem

  information

  status codes code http webdev internet reference

• 

  Greater Victoria Public Library

  Error numbers and their meanings.

  imported Link_Checkers

• 13 Jul 09
  

  nealrichter

  apache http reference

• 08 Jul 09
  

  akundu

  httpcodes http httpresponse httpresponsecodes httperrorcodes errorcodes

• 02 Jul 09
  

  Stéphane Vasseur

  error pages code reference web programming internet

• 30 Jun 09
  

  Engelbert Tejeda

  gls*http error codes

  computers-web-errors-troubleshooting

Would you like to comment?

Join Diigo for a free account, or sign in if you are already a member.