cors
Evil Firefox Error — “A parameter or an operation is not supported by the underlying object”
Okay, so after of hours of testing (and great discussion from @Dave and @danronmoon, I’ve finally figured out what’s going on. The CORS (Cross-Domain Resource Sharing) calls I was making were set to ‘async: false’ — (which I realize I did not include in my original post, as I thought it was inconsequential) this, seems … Read more
ReactJS API Data Fetching CORS error
The CORS settings need to be setup in the API to allow access from your React app domain. No CORS settings, no AJAX from different domains. It’s simple as that. You can either add CORS settings to your company API (this is unlikely to happen) or you can work around like described below: The CORS … Read more
jQuery ajax request being block because Cross-Origin
Try to use JSONP in your Ajax call. It will bypass the Same Origin Policy. Working with JSONP Try example $.ajax({ url: “https://api.dailymotion.com/video/x28j5hv?fields=title”, dataType: “jsonp”, success: function( response ) { console.log( response ); // server response } });
Cross-domain connection in Socket.IO
Quoting the socket.io FAQ: Does Socket.IO support cross-domain connections? Absolutely, on every browser! As to how it does it: Native WebSockets are cross-domain by design, socket.io serves a flash policy file for cross-domain flash communication, XHR2 can use CORS, and finally you can always use JSONP.
JQuery stuck at CORS preflight and IIS ghost response
Create PreflightRequestsHandler class where you allow request headers(1) and enable cors before your class(2). 1. public class PreflightRequestsHandler : DelegatingHandler { protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) { if (request.Headers.Contains(“Origin”) && request.Method.Method.Equals(“OPTIONS”)) { var response = new HttpResponseMessage { StatusCode = HttpStatusCode.OK }; // Define and add values to variables: origins, headers, methods (can … Read more
Safari 13+ iframe blocks CORS cookies
I think I might have found the solution: Apple’s Storage Access API: https://webkit.org/blog/8124/introducing-storage-access-api/
fonts are blocked in web client cors
Your browser is complaining about a missing header: Access-Control-Allow-Origin Because this header is missing your browser does not know that the desired access is legit. Have a look at http://enable-cors.org and choose the configuration appropriate for your server. You need to configure the server where the fonts are stored !
Flask-CORS not working for POST, but working for GET
In my case, a CORS error raised because of an internal error. An error completely unrelated to CORS, which should return 500, was causing this.