Http Error 403 401
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Status codes 301 Moved Permanently 302 Found 303 See Other 403 Forbidden 404 Not Found 451 Unavailable For Legal Reasons v t e A web server may or may http 402 not return a 403 Forbidden HTTP 403 in response to a request from
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a client for a web page or resource to indicate that the server can be reached and understood the http 404 request, but refuses to take any further action. Status code 403 responses are the result of the web server being configured to deny access, for some reason, to the requested resource http 400 by the client. A typical request that may receive a 403 Forbidden response is a GET for a web page, performed by a web browser to retrieve the page for display to a user in a browser window. The web server may return a 403 Forbidden status for other types of requests as well. The Apache web server returns 403 Forbidden in response
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to requests for url paths that correspond to filesystem directories, when directory listings have been disabled in the server and there is no Directory Index directive to specify an existing file to be returned to the browser. Some administrators configure the Mod proxy extension to Apache to block such requests, and this will also return 403 Forbidden. Microsoft IIS responds in the same way when directory listings are denied in that server. In WebDAV, the 403 Forbidden response will be returned by the server if the client issued a PROPFIND request but did not also issue the required Depth header, or issued a Depth header of infinity.[1] Contents 1 Difference from status "401 Unauthorized" 2 403 substatus error codes for IIS 3 See also 4 References 5 External links Difference from status "401 Unauthorized"[edit] Status codes 401 (Unauthorized) and 403 (Forbidden) have distinct meanings. A 401 response indicates that access to the resource is restricted, and the request did not provide any HTTP authentication. It is possible that a new request for the same resource will succeed if authentication is provided. The response must include an HTTP WW
response. 10.1 Informational 1xx 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. There are no required headers for this class of status code. Since HTTP/1.0 did http 500 not define any 1xx status codes, servers MUST NOT send a 1xx response to an http 422 HTTP/1.0 client except under experimental conditions. A client MUST be prepared to accept one or more 1xx status responses prior to a regular response,
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even if the client does not expect a 100 (Continue) status message. Unexpected 1xx status responses MAY be ignored by a user agent. Proxies MUST forward 1xx responses, unless the connection between the proxy and its client has https://en.wikipedia.org/wiki/HTTP_403 been closed, or unless the proxy itself requested the generation of the 1xx response. (For example, if a proxy adds a "Expect: 100-continue" field when it forwards a request, then it need not forward the corresponding 100 (Continue) response(s).) 10.1.1 100 Continue The client SHOULD continue with its request. This interim response is used to inform the client that the initial part of the request has been received and has not yet been rejected by the server. https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html The client SHOULD continue by sending the remainder of the request or, if the request has already been completed, ignore this response. The server MUST send a final response after the request has been completed. See section 8.2.3 for detailed discussion of the use and handling of this status code. 10.1.2 101 Switching Protocols The server understands and is willing to comply with the client's request, via the Upgrade message header field (section 14.42), for a change in the application protocol being used on this connection. The server will switch protocols to those defined by the response's Upgrade header field immediately after the empty line which terminates the 101 response. The protocol SHOULD be switched only when it is advantageous to do so. 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. 10.2 Successful 2xx This class of status code indicates that the client's request was successfully received, understood, and accepted. 10.2.1 200 OK The request has succeeded. The information returned with the response is dependent on the method used in the request, for example: GET an entity corresponding to the requested resource is sent in the response; HEAD the entity-header fields corresponding to the requested resource are sent in the response without any message-body; POST an entit
Forbidden RESTful Requests: 401 vs. 403 vs. 404 By Ben Nadel on July 19, 2012 Tags: ColdFusion I don't have a tremendous https://www.bennadel.com/blog/2400-handling-forbidden-restful-requests-401-vs-403-vs-404.htm amount of experience building RESTful APIs; so, it's not always clear which HTTP status code in the 4xx block I should use when refusing to fulfill an incoming resource https://dev.twitter.com/overview/api/response-codes request. One tricky scenario that I've had to code against recently is the request for a properly formed, valid resource of which the authenticating user doesn't have permissions to http error view. Image that we have two users in our system: Sarah, with ID 4, and Tricia, with ID 37. Now, imagine that Sarah makes an authenticated request to view Tricia's profile resource:GET /users/37/profile HTTP/1.1Authorization: Basic YmVuK2F206dGVzdA==Accept: application/jsonHere, Sarah is using Basic Authorization to identify herself as Sarah; however, she's making a request to another user's profile (Tricia's). http error 403 For sake of argument, let's say that in this API, a user can only view his or her own profile. What HTTP status code should I return?The three status codes that felt the most appropriate are:401 - Unauthorized403 - Forbidden404 - Not FoundIn my mind, the use of each of these three HTTP status codes could be justified. Sarah is not authorized to view Tricia's profile (401); Sarah is forbidden from viewing someone else's profile (403); and, Sarah simply cannot see resources that she's not allowed to view (404). The initial problem that I had with using either of the HTTP status codes, 401 or 403, was that I felt like it was exposing secure information. Both of those responses sort of say, "Yeah, that resource exists, but you can't see it." My problem with this is that it confirms that those resources exist. When you ask a Doctor if he treats a particular patient (at least in Law & Order - wicked awesome show!), he will often say something t
DocumentationBest PracticesAPI OverviewUpcoming changes to TweetsObject: UsersObject: TweetsObject: EntitiesObject: Entities in ObjectsObject: PlacesTwitter IDsConnecting to Twitter API using TLSUsing cursors to navigate collectionsError Codes & ResponsesTwitter LibrariesAPI StatusPlaybooksEventsCase StudiesManage My AppsTerms of UseError Codes & ResponsesHTTP Status CodesThe Twitter API attempts to return appropriate HTTP status codes for every request.CodeTextDescription200OKSuccess!304Not ModifiedThere was no new data to return.400Bad RequestThe request was invalid or cannot be otherwise served. An accompanying error message will explain further. In API v1.1, requests without authentication are considered invalid and will yield this response.401UnauthorizedAuthentication credentials were missing or incorrect.Also returned in other circumstances, for example all calls to API v1 endpoints now return 401 (use API v1.1 instead).403ForbiddenThe request is understood, but it has been refused or access is not allowed. An accompanying error message will explain why. This code is used when requests are being denied due to update limits. Other reasons for this status being returned are listed alongside the response codes in the table below.404Not FoundThe URI requested is invalid or the resource requested, such as a user, does not exists. Also returned when the requested format is not supported by the requested method.406Not AcceptableReturned by the Search API when an invalid format is specified in the request.410GoneThis resource is gone. Used to indicate that an API endpoint has been turned off. For example: "The Twitter REST API v1 will soon stop functioning. Please migrate to API v1.1."420Enhance Your CalmReturned by the version 1 Search and Trends APIs when you are being rate limited.422Unprocessable EntityReturned when an image uploaded to POST account / update_profile_banner is unable to be processed.429Too Many RequestsReturned in API v1.1 when a request cannot be served due to the application's rate limit having been exhausted for the resource. See Rate Limiting in API v1.1.500Internal Server ErrorSomething