what is cors
CORS => (Cross-Origin Resource Sharing)
sharing resources between different sourceswhat is cors
CORS => (Cross-Origin Resource Sharing)
sharing resources between different sourcescors error localhost
Chrome does not support localhost for CORS requests (a bug opened in 2010, marked WontFix in 2014).
To get around this you can use a domain like localho.st (which points at 127.0.0.1 just like localhost) or start chrome with the --disable-web-security flag (assuming you're just testingwhat is CORS
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.Copyright © 2021 Codeinu
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