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Unless otherwise stated, the status code is part of the HTTP standard. [1] The Internet Assigned Numbers Authority (IANA) maintains the official registry of HTTP status codes. [2] All HTTP response status codes are separated into five classes or categories. The first digit of the status code defines the class of response, while the last two ...
When the server wants the user agent to authenticate itself towards the server after receiving an unauthenticated request, it must send a response with a HTTP 401 Unauthorized status line [7] and a WWW-Authenticate header field. [8] The WWW-Authenticate header field for basic authentication is constructed as following:
The server responds with the 401 "Unauthorized" response code, providing the authentication realm and a randomly generated, single-use value called a nonce. At this point, the browser will present the authentication realm (typically a description of the computer or system being accessed) to the user and prompt for a username and password.
OfferUp is an online mobile-first C2C marketplace with an emphasis on in-person transactions. [1] It was founded as a competitor to Craigslist , differentiating itself with mobile-friendly apps and user profiles with ratings.
Insufficient permissions: The most common reason for a 403 status code is that the user lacks the necessary permissions to access the requested resource. This can mean that the user is not logged in, has not provided valid credentials, or does not belong to the appropriate user group to access the resource.
It should only contain pages that are Hypertext Transfer Protocol status codes or lists of Hypertext Transfer Protocol status codes, as well as subcategories containing those things (themselves set categories). Topics about Hypertext Transfer Protocol status codes in general should be placed in relevant topic categories
From a code: This is a redirect from a code that has no distinctive category to which it may be sorted. Examples are DOCTYPE , and redirects from HTML and hexadecimal codes. To an embedded anchor : This is a redirect from a topic that does not have its own page to an embedded anchor on the redirect's target page.
401 Unauthorized The request requires user authentication. This response is issued by UASs and registrars. [1]: §21.4.2 402 Payment Required Reserved for future use. [1]: §21.4.3 403 Forbidden The server understood the request, but is refusing to fulfill it.