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For example, the client uploads an image as image/svg+xml, but the server requires that images use a different format. 416 Range Not Satisfiable The client has asked for a portion of the file (byte serving), but the server cannot supply that portion. For example, if the client asked for a part of the file that lies beyond the end of the file.
If you can't see the image, make sure your browser preferences are set to display images and try again. Alternatively, you can listen to the image challenge by clicking on the audio icon. Display images in Edge Display images in Safari Display images in Firefox Display images in Google Chrome Display images in Internet Explorer
A 403 status code can occur for the following reasons: [3] Insufficient permissions: The most common reason for a 403 status code is that the user lacks the necessary permissions to access the requested resource.
A specific flow to a user agent has failed, although other flows may succeed. This response is intended for use between proxy devices, and should not be seen by an endpoint (and if it is seen by one, should be treated as a 400 Bad Request response). [16]: §11.5 433 Anonymity Disallowed The request has been rejected because it was anonymous. [17]
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The request/response message consists of the following: Request line, such as GET /logo.gif HTTP/1.1 or Status line, such as HTTP/1.1 200 OK, Headers; An empty line; Optional HTTP message body data; The request/status line and headers must all end with <CR><LF> (that is, a carriage return followed by a line feed).
The web server will not be able to identify the forgery because the request was made by a user that was logged in, and submitted all the requisite cookies. Cross-site request forgery is an example of a confused deputy attack against a web browser because the web browser is tricked into submitting a forged request by a less privileged attacker.
Consider the following example to illustrate the occurrence of a 502 Bad Gateway error: A user attempts to access a website by entering the URL in their browser. A proxy server first receives the user's request. Acting as an intermediary, the proxy server forwards the request to an upstream server.