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 not define any 1xx status codes, servers MUST NOT send a...
The 204 status code means that the request was received and understood, but that there is no need to send any data back. 205 - Reset Content The 205 status code is a request from the server to the client to reset the document from which the original request was sent. For example, if ...
The 400 bad request is an HTTP response code sent from a web server that didn’t understand the request sent from your browser.It isn’t the most descriptive of error codes but the fact it’s an HTTP 4xx code means it’s client side error....
and is terminated by an empty line. There are no required headers for this class of status code. Since HTTP/1.0 did not define any 1xx status codes, servers MUST NOT send a 1xx response to an HTTP/1.0 client except under experimental conditions. ...
'401' => 'Unauthorized 请求要求用户的身份认证', '402' => 'Payment Required 保留,将来使用', '403' => 'Forbidden 服务器理解请求客户端的请求,但是拒绝执行此请求', '404' => 'Not Found 服务器无法根据客户端的请求找到资源(网页)。通过此代码,网站设计人员可设置"您所请求的资源无法找到"的个性页面...
400 Bad Request 请求由于语法错误未被完成 The request cannot be fulfilled due to bad syntax. 401 Unauthorized 类似于403 Forbidden但具体使用时,主要用于当需要身份验证时请求失败或未经授权。响应Header必须包含一个WWW-Authenticate字段,含有一个适用于该请求资源的验证。
The client does not have access rights to the content, i.e. they are unauthorized, so server is rejecting to give proper response. Unlike 401, the client's identity is known to the server. 404 Not Found The server can not find requested resource. In the browser, this means the URL is...
400 Bad Request This is a common status code that indicates that the server could not understand the request as a result of a syntax that is invalid. 401 Unauthorized Although the HTTP standard specifies "unauthorized", semantically this response means "unauthenticated". That is, the client must...
400 - Bad request The Hypertext Transfer Protocol Stack (Http.sys) file blocks IIS from processing the request because of a problem in the request. Typically, this HTTP status code means that the request contains invalid characters or sequences, or that the request goes against the security set...
HTTP Status Code 401: “Unauthorized” Error Status code 401 – the “unauthorized” error, is a client-side error. Usually, this means the user’s login authentication credentials aren’t working. The user entered an incorrect password, or the server doesn’t know who the user is, and is...