AWS API Gateway - CORS + POST not working

Question

CORS is really driving me crazy and I\'m really out of ideas as of what to try to make it work.

I have created a simple APIG Api with 1 resource cal

Answer 1

I had a similar issue, but with lambda proxy integration:

• CORS activated on AWS API Gateway using the browser

• lambda-proxy integration activated

When using the lambda proxy integration, you can return custom headers from inside the code of the lambda:

        var result = {
        statusCode: data.statusCode | 200,
        headers: {
          "Access-Control-Allow-Origin": "*"
        },
        body: JSON.stringify(responseBody)
    };
    callback(null, result);

This way you get the CORS header sent. I think there might be a better way to get it to work with the lambda proxy integration without coupling the CORS inside the code of the lambda, please let me know if you know.