Why am I getting CORS errors when trying to connect to \'https://googledocs-clone-sbayrak.herokuapp.com/\' from \'https://googledocs-clone-sbayrak.netlify.app/\'?

Allow cross-origin requests from 'https://googledocs-clone-sbayrak.netlify.app/'

CORS errors occur due to mismatched configuration between client and server settings. In this scenario, the client application at 'https://googledocs-clone-sbayrak.netlify.app/' is trying to connect to the server endpoint at 'https://googledocs-clone-sbayrak.herokuapp.com/', but the server is configured to only accept requests from 'https://googledocs-clone-sbayrak.netlify.app/'. This leads to a CORS error, as the request's origin header does not match the allowed value.

Resolving the CORS Error

The key to resolving this error lies in ensuring that the allowed origin on the server matches the request's origin. The incorrect configuration that caused the error was using 'https://googledocs-clone-sbayrak.netlify.app/' as the allowed origin. However, web origins do not contain a path, so the trailing slash causes the match to fail.

To fix this, the allowed origin should be updated to 'https://googledocs-clone-sbayrak.netlify.app' without the trailing slash. Here's the corrected cors configuration:

<code class="typescript">const io = socketio(server, {
  cors: {
    origin: 'https://googledocs-clone-sbayrak.netlify.app',
    methods: ['GET', 'POST'],
  },
});</code>

By removing the trailing slash from the allowed origin value, it will now correctly match the request's origin header, allowing cross-origin requests to succeed and the client to communicate with the server.

The above is the detailed content of Why am I getting CORS errors when trying to connect to \'https://googledocs-clone-sbayrak.herokuapp.com/\' from \'https://googledocs-clone-sbayrak.netlify.app/\'?. For more information, please follow other related articles on the PHP Chinese website!