Hello I have a problem and I am trying to find a workaround. I am having a fileupload on my site which lets the user upload a file up to 10mb, however the serverless functions function of vercel only allow a payload size of max 4.5 mb which is exceeded by this time the user uploads a 10mb file.

I tried now to not use the /api/upload directory with the outgoing request to my server, instead use the request directly inside the app to upload the file directly to my server https://vercel.com/guides/how-to-bypass-vercel-body-size-limit-serverless-functions. However, this is running into big cors issues as the domain I am hosting it is not the same as the outgoing request (I assume)?

App hosted example: demo.upload.com
Outgoing request: api.upload.com

Both domains are different, therefore getting the cors error.

Does anybody know how to overcome this issue? I tried everything with setting access control headers to the request but nothing works out...