AWS Lambda fails to return PDF file
well, I found the answer. The settings in my response object are fine, I just had to manually change the settings in API Gateway for this to work in the browser. I have added "*/*" to binary media types under the binary settings in API Gateway console
API GATEWAY
- just log into your console
- choose your api
- click on binary support in the dropdown
- edit binary media type and add "*/*"
FRONTEND
opening the api url in new tab (target="_blank"). Probably the browser is handling the encoded base 64 response, In my case with chrome, the browser just opens the pdf in a new tab exactly like I want it to do.
After spending several hours on this I found out that if you set Content handling to Convert to binary (CONVERT_TO_BINARY) the entire response has to be base64, I would otherwise get an error: Unable to base64 decode the body.
Therefore my response now looks like:
callback(null, buffer.toString('base64'));
The Integration response:
The Method response:
And Binary Media Types:
