The response MAY include new or updated metainformation in the form of entity-headers, which if present SHOULD be associated with the requested variant. 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. Since the redirection might be altered on occasion, the client SHOULD continue to use the Request-URI for future requests. 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? http://orgias.org/http-status/http-error-codes-301.html
It includes codes from IETF internet standards, other IETF RFCs, other specifications, and some additional commonly used codes. Retrieved October 15, 2015. ^ "Error message when you try to log on to Exchange 2007 by using Outlook Web Access: "440 Login Timeout"". Retrieved February 4, 2015. ^ "List of HTTP status codes". If the response is the result of an If-Range request that used a weak validator, the response MUST NOT include other entity-headers; this prevents inconsistencies between cached entity-bodies and updated headers. https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
It is not necessary to mark all permanently unavailable resources as "gone" or to keep the mark for any length of time -- that is left to the discretion of the server owner. 10.4.12 411 Length Required The server refuses to accept the request without a defined Content- Length. the user does not have the necessary credentials. Diese sind in einer viel besseren Position, um Ihnen zu helfen, als wir dies bei diesem Fehlertyp sind. 503-Fehler im HTTP-Ablauf Jeder Client (z.B.
Some servers may wish to simply refuse the connection. 10.5.5 504 Gateway Timeout The server, while acting as a gateway or proxy, did not receive a timely response from the upstream server specified by the URI (e.g. The request MAY be resubmitted after reducing the size of the request header fields. 451 Unavailable For Legal Reasons The user requests an illegal resource, such as a web page censored by a government. The protocol SHOULD be switched only when it is advantageous to do so. Http Status Codes Cheat Sheet As more and more visitors leave the website, the chances of a successful page load for you increases.Fixing 503 Errors on Your Own SiteWith so many different web server options out there, and even more general reasons why your service might be unavailable there isn't a straightforward "thing to go do" if your site is giving your users a 503.That said, there are certainly some places to start looking for a problem...
Otherwise, the response MUST include all of the entity-headers that would have been returned with a 200 (OK) response to the same request. Http Status Code The proxy MUST return a Proxy-Authenticate header field (section 14.33) containing a challenge applicable to the proxy for the requested resource. March 3, 2003. These status codes are applicable to any request method.
Usually this implies future availability (e.g., 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. 503 Service Unavailable The server is currently unavailable (because it is overloaded or down for maintenance). Http Response Example Retrieved May 21, 2009. ^ "Mozilla Bugzilla Bug 187996: Strange behavior on 305 redirect, comment 13". The 304 response MUST NOT contain a message-body, and thus is always terminated by the first empty line after the header fields. The response MAY include new or updated metainformation in the form of entity-headers, which if present SHOULD be associated with the requested variant.
It is telling to client that response has not been modified. The client MAY repeat the request with a suitable Proxy-Authorization header field (section 14.34). Http 504 March 3, 2003. Http 502 The response SHOULD include an entity containing a list of resource characteristics and location(s) from which the user or user agent can choose the one most appropriate.
The response MUST include a WWW-Authenticate header field (section 14.47) containing a challenge applicable to the requested resource. this content Retrieved April 1, 2009. ^ "10 Status Code Definitions". Retrieved 2016-01-09. ^ "Troubleshooting: Error Pages". Since the redirection MAY be altered on occasion, the client SHOULD continue to use the Request-URI for future requests. Http Code 302
This response MUST NOT use the multipart/byteranges content- type. 10.4.18 417 Expectation Failed The expectation given in an Expect request-header field (see section 14.20) could not be met by this server, or, if the server is a proxy, the server has unambiguous evidence that the request could not be met by the next-hop server. 10.5 Server Error 5xx Response status codes beginning with the digit "5" indicate cases in which the server is aware that it has erred or is incapable of performing the request. External links Wikimedia Commons has media related to HTTP. Learn more → 10 How To Troubleshoot Common HTTP Error Codes Posted Oct 24, 2014 82.4k views FAQ Apache Nginx Introduction When accessing a web server or application, every HTTP request that is received by a server is responded to with an HTTP status code. http://orgias.org/http-status/http-error-codes-404-403.html Retrieved June 12, 2014. ^ "Reference of method redirect_to in Ruby Web Framework "Ruby on Rails".
Google Books. Http 404 Stack Overflow. These response codes are applicable to any request method. 10.5.1 500 Internal Server Error The server encountered an unexpected condition which prevented it from fulfilling the request. 10.5.2 501 Not Implemented The server does not support the functionality required to fulfill the request.
The response MUST include a WWW-Authenticate header field (section 14.47) containing a challenge applicable to the requested resource. The response MUST include the following header fields: - Either a Content-Range header field (section 14.16) indicating the range included with this response, or a multipart/byteranges Content-Type including Content-Range fields for each part. Cloudflare. Http 403 Therefore, the note SHOULD contain the information necessary for a user to repeat the original request on the new URI.
Where applicable, look at things like connection limits, bandwidth throttling, overall system resources, fail-safes that may have triggered, etc.And in what's very likely a "double edged sword" for your website, it may be that it's suddenly very, very popular. Use of this response code is not required and is only appropriate when the response would otherwise be 200 (OK). 10.2.5 204 No Content The server has fulfilled the request but does not need to return an entity-body, and might want to return updated metainformation. However, this specification does not define any standard for such automatic selection. check over here The response MUST NOT include an entity. 10.2.7 206 Partial Content The server has fulfilled the partial GET request for the resource.
Does the file exist in the correct location on the server? The entity format is specified by the media type given in the Content- Type header field. HTTP, FTP, LDAP) or some other auxiliary server (e.g. If a Content-Length header field is present in the response, its value MUST match the actual number of OCTETs transmitted in the message-body. - Date - 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 206 response is the result of an If-Range request that used a strong cache validator (see section 13.3.3), the response SHOULD NOT include other entity-headers.
These response codes are applicable to any request method. 500 Internal Server Error A generic error message, given when an unexpected condition was encountered and no more specific message is suitable. 501 Not Implemented The server either does not recognize the request method, or it lacks the ability to fulfill the request. Retrieved 16 October 2015. ^ "301". 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) , since many pre-HTTP/1.1 user agents do not understand the 307 status. Stack Overflow.
However, this specification does not define any standard for such automatic selection. 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. A client SHOULD detect infinite redirection loops, since such loops generate network traffic for each redirection. Article What to do with 'DNS Server Not Responding' issues on your network Article How to Change DNS Server Settings Article A Complete List of HTTP Status Lines Article Is Facebook Down Right Now...
Internet Information Services 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 again. 449 Retry With The server cannot honour the request because the user has not provided the required information. 451 Redirect Used in Exchange ActiveSync when either a more efficient server is available or the server cannot access the users' mailbox. The client is expected to re-run the HTTP AutoDiscover operation to find a more appropriate server. nginx The nginx web server software expands the 4xx error space to signal issues with the client's request. These are only used for logging purposes, no actual response is sent with these codes. 444 No Response Used to indicate that the server has returned no information to the client and closed the connection. 495 SSL Certificate Error An expansion of the 400 Bad Request response code, used when the client has provided an invalid client certificate. 496 SSL Certificate Required An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request Used when the client has closed the request before the server could send a response. The class of a status code can be quickly identified by its first digit: 1xx: Informational 2xx: Success 3xx: Redirection 4xx: Client Error 5xx: Server Error This guide focuses on identifying and troubleshooting the most commonly encountered HTTP error codes, i.e. 4xx and 5xx status codes, from a system administrator's perspective. Microsoft. 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.