Rust CORS example

This function shows how to handle preflight CORS requests that will be sent by a browser when invoking a function.

The example uses totally permissive, open CORS, you will may want to modify this to make it more secure.

The second handler is even more permissive, allowing authentification tokens such as cookies to be transmitted to the function.

Setup

Once this is set up, you can run:

npm install

serverless deploy

Then, from the given URL, you can run:

# Options request
curl -i -X OPTIONS <function URL>

# Get request
curl -i -X GET <function URL>