Extension Error Causes {"message":"Internal Server Error"}?

[astorm]

When running some tests I noticed that if the extension was unable to post to APM Server with an error like this

2021/09/23 22:34:57 An Error Occured calling client.Do Post "https://01cd7a0a66084992906782275a699198.apm.us-east-1.aws.cloud.es.io:443/intake/v2/events": net/http: TLS handshake timeout

That this error seemed to corespond with a Lambda result of

$ curl https://xxx.execute-api.us-west-2.amazonaws.com/default/july-2021-delete-after-july-31
{"message":"Internal Server Error"}

We should investigate and make sure that our extension error handling is done in such a way that it doesn't crash the lambda function.

[estolfo]

We don't return if there's an error posting, we continue the function. So perhaps that error is due to the function continuing to try to read the response body and such even when there's an error posting the data?

[estolfo]

Maybe the PR I just opened would fix this issue?