API Gateway HTTP API CORS

Question

I am using the new API Gateway HTTP which during the configuration enables you to add CORS. So I have set the Access-Control-Allow-Origin Header with the setting *.

However when I make a request using Postman I do not see that header and this i causing my VueJS Axios request to fail.

I previously used a Lambda Proxy Integration and did the following in my Lambda

"headers": { 
            "Access-Control-Allow-Origin": "*" 
        }

However the new HTTP API just does not seem to implement CORS. Maybe I am missing something simple.

--EDITS--

So I have continue to find an answer and came across a blog post from the guys at Serverless who set the following

It’ll ensure following headers:

Access-Control-Allow-Origin: *
Access-Control-Allow-Headers:

Content-Type, X-Amz-Date, Authorization, X-Api-Key, X-Amz-Security-Token, X-Amz-User-Agent
Access-Control-Allow-Methods:

OPTIONS, and all the methods defined in your routes (GET, POST, etc.)

I have tried these and redeployed and still only get the standard headers

Thanks

Answer 1

For anyone using HTTP API and the proxy route ANY /{proxy+}

You will need to explicitly define your route methods in order for CORS to work.

Wish this was more explicit in the AWS Docs for Configuring CORS for an HTTP API

Was on a 2 hour call with AWS Support and they looped in one of their senior HTTP API developers, who made this recommendation.

Hopefully this post can save some people some time and effort.