For solving the problem: Access-Control-Allow-Origin header on a get request just add: app.use(function(req, res. Allowing any origin with Access-Control-Allow-Origin: is guaranteed to work in all scenarios but may have security implications like some CSRF attacks depending on how the server controls access to resources and use sessions and cookies. You can only specify one of the following values for it:, null or a domain. Port numbers can be higher if you are serving multiple apps at the same time. ive been fiddling with persistent user sessions for a while and was having trouble stringing together passport / passport-local (for authentification), mongoose, express-session, and connect-mongo (for storing sessions in mongo). In the devtools' network tab you have 2 requests for the /login. A preflight request is something the browser does before sending your actual GET/POST/etc request. As you can see you need to allow access in preflight response. Pass the access token (configure with the domain, client id, audience, redirectUri) in the header for the axios callĪudience: ` client_id: _APP_AUTH_CLIENTID,ĭomain: _APP_AUTH_DOMAINĬonst token = await auth0Client.getTokenSilently(/.well-known/jwks. In two words: If you are using expressJS like me. Your problem is with the Access-Control-Allow-Origin header. Request header field access-control-allow-origin is not allowed by Access-Control-Allow-Headers in preflight response. Then from your original server you can do whatever you want to the target. Do not include hostname in your axios request so it will request your original server. Include Access-Control-Allow-Origin in your response headers from your target server. Use OAuth2.0 for authorization, successful response in the POSTMAN test with the access token Im trying to get data using axios, but facing the following error: No Access-Control-Allow-Origin I have tried to find a solution, but nowhere I found a proper solution including FastAPI, React. Use a proxy server on any other domain, but modify the response to include the necessary headers. The setup below works for some endpoint but not all of endpoints, here is the one that isn't working: Keep receiving CORS error for some endpoints: 'Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.' How do you solve it Depending on your server and the server side programming language your are implementing, you can configure the different parameters to handle your CORS. I need to receive the privileges from Server for the Access-Control-Allow-Origin: * in the response header. So your cross-origin request and the server Cross-Origin Resource Sharing (CORS) have to match.
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