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Http Protocol Error Codes

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For example, including local annotation information about the resource might result in a superset of the metainformation known by the origin server. This response code probably is most famous one due to its frequency to occur in web. 405 Method Not Allowed The request method is known by the server but has been If the action cannot be carried out immediately, the server SHOULD respond with 202 (Accepted) response instead. DNS) it needed to access in attempting to complete the request. http://upintheaether.com/http-code/http-500-error-codes.php

IETF. Some Web servers use HTTP 503 to indicate expected failures, due to administrative policies such as exceeding a limit on the number of concurrent users or CPU utilization, from unexpected failures Retrieved January 20, 2014. ^ "Screenshot of error page" (bmp). Retrieved 16 October 2015. ^ Larry Masinter (1 April 1998). https://en.wikipedia.org/wiki/List_of_HTTP_status_codes

Http Status Codes Cheat Sheet

Hypertext Transfer Protocol – HTTP/1.0. The first digit of the status code specifies one of five classes of response; an HTTP client must recognise these five classes at a minimum. Duplicate entries and deleting root objects when cascade-delete is not supported are a couple of examples. 410 Gone The requested resource is no longer available at the server and no forwarding Depending upon the format and the capabilities of the user agent, selection of the most appropriate choice MAY be performed automatically.

Contact Us Phone: +44 (0) 1273 906908 Twitter: @AddedBytes Email: [email protected] Address: 3A Stairbridge Court, Bolney Grange Business Park, Stairbridge Lane, Bolney, Sussex, RH17 5PA Legal CompanyNumber: 8026399 VATNumber: 193695360 © In a POST request, the response will contain an entity describing or containing the result of the action.[7] 201 Created The request has been fulfilled, resulting in the creation of a IETF. Http Code 403 Content is available under these licenses.

A user agent may automatically redirect a request. Google Developers API uses this status if a particular developer has exceeded the daily limit on requests.[35] 21.co Bitcoin micropayment service uses this status in response for every client http request.[36] IETF. https://en.wikipedia.org/wiki/List_of_HTTP_status_codes Retrieved 16 October 2015. ^ "RFC 7231, Section 6.3.4.". ^ "RFC 7230, Section 5.7.2.". ^ Simmance, Chris. "Server Response Codes And What They Mean".

The response MUST include a WWW-Authenticate header field (section 14.47) containing a challenge applicable to the requested resource. Http Code 302 Otherwise (i.e., the conditional GET used a weak validator), the response MUST NOT include other entity-headers; this prevents inconsistencies between cached entity-bodies and updated headers. HTTP access authentication is explained in "HTTP Authentication: Basic and Digest Access Authentication". For example, if versioning were being used and the entity being PUT included changes to a resource which conflict with those made by an earlier (third-party) request, the server might use

Http Response Example

This response SHOULD contain an appropriate precondition or postcondition code, such as 'lock-token-submitted' or 'no-conflicting-lock'. https://developer.mozilla.org/en-US/docs/Web/HTTP/Status Retrieved 16 October 2015. ^ alex. "What is the correct HTTP status code to send when a site is down for maintenance?". Http Status Codes Cheat Sheet For example, when requesting a page, a browser might receive a statis code of 101, followed by an "Upgrade" header showing that the server is changing to a different version of Http Error Wordpress Informational 100 - ContinueA status code of 100 indicates that (usually the first) part of a request has been received without any problems, and that the rest of the request should

User-agent or user should choose one of them. http://upintheaether.com/http-code/http-error-codes-common.php The response 417 Expectation Failed indicates the request should not be continued.[2] 101 Switching Protocols The requester has asked the server to switch protocols and the server has agreed to do Data is somewhere else and the GET method is used to retrieve it. 304 Not Modified If the request header includes an 'if modified since' parameter, this code will be returned If the server does not know, or has no facility to determine, whether or not the condition is permanent, the status code 404 (Not Found) SHOULD be used instead. Http 422

Retrieved October 11, 2009. ^ a b "Using token-based authentication". The response MUST include a WWW-Authenticate header field (section 14.47) containing a challenge applicable to the requested resource. The range header is used by HTTP clients to enable resuming of interrupted downloads, or split a download into multiple simultaneous streams.[14] 207 Multi-Status (WebDAV; RFC 4918) The message body that news According to W3 HTTP specifications: "The client did not produce a request within the time that the server was prepared to wait.

In some cases, this may even be preferable to sending a 406 response. Http 409 Usually, this is invisible, though I'm sure you've seen one of the very common Response codes - 404, indicating a page was not found. April 2015.

Unless the request method was HEAD, the entity of the response SHOULD contain a short hypertext note with a hyperlink to the new URI(s).

Here's What to Do Article Explaining HTTP: The protocol that makes the Internet work Article A Complete List of HTTP Status Lines Article The Magic of How Web Browsers and Web Wikipedia This means the requester has asked the server to switch protocols and the server is acknowledging that it will do so. 102 Processing (WebDAV) The 102 (Processing) status code is For example, a POST request should be repeated using another POST request.[29] 308 Permanent Redirect (RFC 7538) The request and all future requests should be repeated using another URI. 307 and Http 404 https://tools.ietf.org/html/rfc2295.

Check Up Down. This responses should be used for temporary conditions and the Retry-After: HTTP header should, if possible, contain the estimated time before the recovery of the service. Wikipedia The request entity has a media type which the server or resource does not support. More about the author Retrieved 16 October 2015. ^ "202".

So, for example, submitting a form to a permanently redirected resource may continue smoothly.[30] 4xx Client Error[edit] 404 error on German Wikipedia The 4xx class of status code is intended for Retrieved May 21, 2009. ^ "Mozilla Bugzilla Bug 187996: Strange behavior on 305 redirect, comment 13". This should be used when a resource has been intentionally removed and the resource should be purged. For example, if a user fills out a form, and submits it, a status code of 205 means the server is asking the browser to clear the form.206 - Partial ContentA

koozai. HTTP Working Group. ^ "Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content, Section 6.4.7 307 Temporary Redirect". This class of status code indicates a provisional response, consisting only of the Status-Line and optional headers, and is terminated by an empty line. Internet Information Services[edit] The Internet Information Services expands the 4xx error space to signal errors with the client's request. 440 Login Timeout The client's session has expired and must log in

If the server has a preferred choice of representation, it SHOULD include the specific URI for that representation in the Location field; user agents MAY use the Location field value for 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. Tools.ietf.org. User agents should display any included entity to the user.[31] 400 Bad Request The server cannot or will not process the request due to an apparent client error (e.g., malformed request

These status codes are applicable to any request method. The response MAY include new or updated metainformation in the form of entity-headers, which if present SHOULD be associated with the requested variant. Retrieved 16 October 2015. ^ a b c d e Dusseault, Lisa, ed. (June 2007). Like the 408 timeout error, but this one occurs at the gateway of the server. 505 HTTP Version Not Supported The HTTP protocol you are asking for is not supported.

Many HTTP clients (such as Mozilla[26] and Internet Explorer) do not correctly handle responses with this status code, primarily for security reasons.[27] 306 Switch Proxy No longer used. Wikipedia The members of a DAV binding have already been enumerated in a previous reply to this request, and are not being included again. 226 IM Used The server has fulfilled Ideally, the response entity would include enough information for the user or user agent to fix the problem; however, that might not be possible and is not required. Note: RFC 1945 and RFC 2068 specify that the client is not allowed to change the method on the redirected request.