"cors" Code Answer's
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allow cross origin
Jules
on Sep 09, 2020
Access-Control-Allow-Origin: *
Access-Control-Allow-Origin: <origin>
Access-Control-Allow-Origin: null
Source: developer.mozilla.org
cross origin even with allow header
Filthy Falcon
on Jul 12, 2020
header('Access-Control-Allow-Origin: http://localhost:8100');
header ("Access-Control-Expose-Headers: Content-Length, X-JSON");
header ("Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE, OPTIONS");
header ("Access-Control-Allow-Headers: Content-Type, Authorization, Accept, Accept-Language, X-Authorization");
header('Access-Control-Max-Age: 86400');
if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
// The request is using the POST method
header("HTTP/1.1 200 OK");
return;
}what is cors
Exuberant Eland
on Jan 11, 2021
“CORS” stands for Cross-Origin Resource Sharing.
It allows you to make requests from one website to another website
in the browser, which is normally prohibited by another browser policy
called the Same-Origin Policy (SOP).Source: medium.com
what is CORS
Pink Person
on Nov 19, 2020
Use CORS to allow cross-origin access.
CORS is a part of HTTP that lets servers specify any other hosts
from which a browser should permit loading of content.
How to block cross-origin access
To prevent cross-origin writes,
check an unguessable token in the request — known as a Cross-Site Request Forgery (CSRF) token.
prevent cross-origin reads of pages that require this token.
To prevent cross-origin reads of a resource,
ensure that it is not embeddable.
prevent embedding because embedding a resource always leaks some information about it.
To prevent cross-origin embeds,
ensure that your resource cannot be interpreted
Browsers may not respect the Content-Type header.
For example, if you point a <script> tag at an HTML document, the browser will try to parse the HTML as JavaScript. When your resource is not an entry point to your site, you can also use a CSRF token to prevent embedding.cors
Tame Tiger
on Apr 19, 2021
var socket = io('http://yourDomain:port', { transports: ['websocket', 'polling', 'flashsocket'] });
Source: stackoverflow.com
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