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I'm using CometChat in my website and recently my users art having this problem with receiving messages. After inspection in FireBug i realized it must be because of the CORS protection (due to the following error) that the script is failing.
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://x3.chatforyoursite.com/subscribe/... This can be fixed by moving the resource to the same domain or enabling CORS.
Now I'm wondering where should I enable CORS because it is enabled on my own server and I have no access to the CometChat server.
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Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://www.oxfordlearnersdictionaries.com/search/english/direct/?q=by+far. This can be fixed by moving the resource to the same domain or enabling CORS.
Reason: CORS request not HTTP This often occurs if the URL specifies a local file, using a file:/// URL. To fix this problem, make sure you use HTTPS URLs when issuing requests involving CORS, such as XMLHttpRequest , Fetch APIs, Web Fonts ( @font-face ), and WebGL textures, and XSL stylesheets.
The same-origin policy is a foundational building block of web security. It essentially defines protection domains which are used to restrict actions and access to web resources. One such restriction is that scrips executing on http://example.com are not allowed to access resources on http://subdomain.example.com .
The server at x3.chatforyoursite.com needs to output the following header:
Access-Control-Allow-Origin: http://www.example.com
Where http://www.example.com is your website address. You should check your settings on chatforyoursite.com to see if you can enable this - if not their technical support would probably be the best way to resolve this. However to answer your question, you need the remote site to allow your site to access AJAX responses client side.
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