Retrieved 16 October 2015. ^ Delta encoding in HTTP. If the server in question is a reverse proxy server, such as a load balancer, here are a few things to check: The backend servers (where the HTTP requests are being forwarded to) are healthy The reverse proxy is configured properly, with the proper backends specified The network connection between the backend servers and reverse proxy server is healthy. GetStatusCode. See Basic access authentication and Digest access authentication. 401 semantically means "unauthenticated", i.e. weblink
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. Called "Request-URI Too Long" previously. 415 Unsupported Media Type The request entity has a media type which the server or resource does not support. Retrieved 16 October 2015. ^ Berners-Lee, Tim; Fielding, Roy T.; Nielsen, Henrik Frystyk (May 1996). Retrieved 16 October 2015. ^ "Twitter Error Codes & Responses". Clients such as search engines should remove the resource from their indices.
Cloudflare. Tools.ietf.org. This is the appropriate response when the server does not recognize the request method and is not capable of supporting it for any resource. 10.5.3 502 Bad Gateway The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request. 10.5.4 503 Service Unavailable The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. If the client is a user agent, it SHOULD NOT change its document view from that which caused the request to be sent.
Contents 1 1xx Informational 2 2xx Success 3 3xx Redirection 4 4xx Client Error 5 5xx Server Error 6 Unofficial codes 6.1 Internet Information Services 6.2 nginx 6.3 Cloudflare 7 See also 8 Notes 9 References 10 External links 1xx Informational Request received, continuing process. top Code Status Explanation 200 OK Standard response for HTTP successful requests. 201 Created When new pages are created by posted form data or by a CGI process, this is confirmation that it worked. 202 Accepted The client's request was accepted, though not yet processed. 203 Non-Authorative Information The information contained in the entity header is not from the original site, but from a third party server. 204 No Content If you click a link which has no target URL, this response is elicited by the server. A client SHOULD detect infinite redirection loops, since such loops generate network traffic for each redirection. Http Code 403 The client MAY repeat the request without modifications at any later time. 10.4.10 409 Conflict The request could not be completed due to a conflict with the current state of the resource.
If the action cannot be carried out immediately, the server SHOULD respond with 202 (Accepted) response instead. In some cases, this may even be preferable to sending a 406 response. Wikipedia The requested resource is only capable of generating content not acceptable according to the Accept headers sent in the request. 407 Proxy Authentication Required This code is similar to 401 (Unauthorized), but indicates that the client must first authenticate itself with the proxy. https://en.wikipedia.org/wiki/List_of_HTTP_status_codes httpstatus.
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. Http Code 302 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." 429 Too Many Requests (RFC 6585) The user has sent too many requests in a given amount of time. June 1999. Often caused by misspellings of URLs. 405 Method Not Allowed The method you are using to access the file is not allowed. 406 Not Acceptable The requested file exists but cannot be used as the client system doesn't understand the format the file is configured for. 407 Proxy Authentication Required The request must be authorised before it can take place. 408 Request Timed Out The server took longer than its allowed time to process the request.
Retrieved February 4, 2015. ^ "List of HTTP status codes". https://developer.mozilla.org/en-US/docs/Web/HTTP/Status Check Up Down. Http Status Codes Cheat Sheet 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. Http Error Wordpress Retrieved 16 October 2015. ^ "HTTP Error 504 Gateway timeout".
Wikipedia This is an example of industry practice contradicting the standard. The HTTP/1.0 specification (RFC 1945) required the client to perform a temporary redirect (the original describing phrase was "Moved Temporarily"), but popular browsers implemented 302 with the functionality of a 303 See Other. have a peek at these guys IETF. Retrieved 16 October 2015. ^ Fisher, Tim. "502 Bad Gateway". The server is indicating that it is unable or unwilling to complete the request using the same major version as the client, as described in section 3.1, other than with this error message. Http 422
Retrieved January 8, 2015. ^ "401". Its purpose is to allow a server to accept a request for some other process (perhaps a batch-oriented process that is only run once per day) without requiring that the user agent's connection to the server persist until the process is completed. This condition is expected to be considered permanent. http://orgias.org/http-status/http-status-codes-error.html top Code Status Explanation 300 Multiple Choices The requested address refers to more than one file.
required A required URL parameter or required request body JSON property is missing. Http 409 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". Sending a large request body to a server after a request has been rejected for inappropriate headers would be inefficient.
If this is omitted, the service will issue this redirect with the appropriate media download path in the Location header. 304—Not Modified Reason Description notModified The conditional request would have been successful, but the condition was false, so no body was sent. 307—Temporary Redirect Reason Description temporaryRedirect Resource temporarily located elsewhere according to the Location header. List of HTTP status codes From Wikipedia, the free encyclopedia Jump to: navigation, search HTTP Persistence Compression HTTPS Request methods OPTIONS GET HEAD POST PUT DELETE TRACE CONNECT PATCH Header fields Cookie ETag Location HTTP referer DNT X-Forwarded-For Status codes 301 Moved Permanently 302 Found 303 See Other 403 Forbidden 404 Not Found 451 Unavailable For Legal Reasons v t e This is a list of Hypertext Transfer Protocol (HTTP) response status codes. See Basic access authentication and Digest access authentication. Http 404 The user might be logged in but does not have the necessary permissions for the resource. 404 Not Found The requested resource could not be found but may be available in the future.
If the 302 status code is received in response to a request other than GET or HEAD, the user agent MUST NOT automatically redirect the request unless it can be confirmed by the user, since this might change the conditions under which the request was issued. Retrieved November 11, 2015. ^ Sigler, Chris. "416 Requested Range Not Satisfiable". If the user is unexpectedly receiving a 404 Not Found error, here are some questions to ask while troubleshooting: Does the link that directed the user to your server resource have a typographical error in it? this content Examples might be simplified to improve reading and basic understanding.
HTTP status codes are three-digit codes, and are grouped into five different classes. If the request that received this status code was the result of a user action, the request MUST NOT be repeated until it is requested by a separate user action. Wikipedia Many HTTP clients (such as Mozilla and Internet Explorer) do not correctly handle responses with this status code, primarily for security reasons. 306 (Unused) The 306 status code was used in a previous version of the specification, is no longer used, and the code is reserved. External links Wikimedia Commons has media related to HTTP.
httpstatus. 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 the 409 response to indicate that it can't complete the request. Microsoft. 2009. ETag and/or Content-Location, if the header would have been sent in a 200 response to the same request Expires, Cache-Control, and/or Vary, if the field-value might differ from that sent in any previous response for the same variant If the conditional GET used a strong cache validator (see section 13.3.3), the response SHOULD NOT include other entity-headers.
Cloudflare. If no Retry-After is given, the client SHOULD handle the response as it would for a 500 response. 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. For example, switching to a newer version of HTTP is advantageous over older versions, and switching to a real-time, synchronous protocol might be advantageous when delivering resources that use such features.
Retrieved April 25, 2015. ^ Khare, R; Lawrence, S. "Upgrading to TLS Within HTTP/1.1". Unlike a 204 response, this response requires that the requester reset the document view. 206 Partial Content (RFC 7233) The server is delivering only part of the resource (byte serving) due to a range header sent by the client. Unless it was a HEAD request, the response SHOULD include an entity containing a list of available entity characteristics and location(s) from which the user or user agent can choose the one most appropriate. Retrieved 16 October 2015. ^ ikitommi; Deraen. "metosin/ring-http-response".
RFC 2295. IETF. In a POST request the response will contain an entity describing or containing the result of the action.