The following table shows all the directives that Google honors and their meaning. It is not a list of tuples. The simplest use of fetch() takes one argument the path to the resource you want to fetch and does not directly return the JSON response body but instead returns a promise that resolves with a Response object.. Theuserdoesnotwanttoperformtherequestedaction.`, Defending with Content Security Policy (CSP) frame-ancestors directive, Content-Security-Policy: frame-ancestors Examples, Defending with X-Frame-Options Response Headers, Best-for-now Legacy Browser Frame Breaking Script, Insecure Direct Object Reference Prevention, Content Security Policy (frame-ancestors), https://w3c.github.io/webappsec-csp/#directive-frame-ancestors, https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors, Section "Relation to X-Frame-Options" of the CSP Spec, Creative Commons Attribution 3.0 Unported License, Preventing the browser from loading the page in frame using the, Preventing session cookies from being included when the page is loaded in a frame using the. response, or you can specify a comma-separated list of directives. The response headers will be sent only if ResponseHeadersEnabled is set to True (default value). HTTP headers let the client and the server pass additional information with an HTTP request or response. The locale resolver is bound to the request to let elements in the process resolve the locale to use when processing the request Multiple X-Robots-Tag headers can be combined within the HTTP response, or you can specify a comma-separated list of directives. directive, the page, media, or resource may be indexed and shown in search results. AD FS then responds with following headers: Browser sends the actual request including the following headers: Once verified, AD FS approves the request by including the web API domain (origin) in the Access-Control-Allow-Origin response header. max-image-preview value of Retrieves data from a remote server or uploads a file. So, a web application using XMLHttpRequest or Fetch could only make HTTP requests to its own domain. The same Vary header value should be used on all responses for a given URL, including 304 Not Modified responses and the "default" CORB should have no observable impact on