How to connect to ElasticSearch on AWS via reactivesearch-proxy-server - amazon-web-services

Question

I'm setting up my first ElasticSearch app using ReactiveSearch to connect to an ElasticSearch index I created on AWS.
I'm new to Node.js and most of the technology involved here. I think I have a basic ReactiveSearch app that works but it won't connect to my AWS ElasticSearch index. When I enter a search I get no output and no errors.
I followed the ReactiveSearch Quickstart guide:
https://opensource.appbase.io/reactive-manual/getting-started/reactivesearch.html
I created the Boilerplate App with CRA:
https://github.com/facebook/create-react-app#creating-an-app
The app runs ok but there is no output when I try to search.
Then I saw the note that you have to use a proxy with AWS. I cloned https://github.com/appbaseio-apps/reactivesearch-proxy-server and got that working and I now have a proxy that runs on http://localhost:7777/
My Search App connects to the proxy like this:
<ReactiveBase
app="my-search"
url="http://localhost:7777">
This is the code that sets the target in the proxy. I commented out the authorisation because I'm not using appbase.io.
const options = {
target: 'https://search....ap-southeast-2.es.amazonaws.com',
changeOrigin: true,
onProxyReq: (proxyReq, req) => {
/* proxyReq.setHeader(
'Authorization',
`Basic ${btoa('cf7QByt5e:d2d60548-82a9-43cc-8b40-93cbbe75c34c')}`
);*/
/* transform the req body back from text */
const { body } = req;
if (body) {
if (typeof body === 'object') {
proxyReq.write(JSON.stringify(body));
} else {
proxyReq.write(body);
}
}
}
}
I can see the ReactiveSearch app on my browser at http://localhost:3000
When I type keywords into the search box I see output like this in the proxy app:
Verifying requests ✔ {"preference":"results"}
{"query":{"bool":{"must":[{"bool":{"must":[{"bool":{"should":[{"multi_match":{"query":"cables","fields":["Description"],"type":"best_fields","operator":"or","fuzziness":0}},{"multi_match":{"query":"cables","fields":["Description"],"type":"phrase_prefix","operator":"or"}}],"minimum_should_match":"1"}}]}}]}},"size":50,"_source":{"includes":["*"],"excludes":[]},"from":0}
Verifying requests ✔ {"preference":"SearchBox"}
{"query":{"bool":{"must":[{"bool":{"must":{"bool":{"should":[{"multi_match":{"query":"horse","fields":["Description"],"type":"best_fields","operator":"or","fuzziness":0}},{"multi_match":{"query":"horse","fields":["Description"],"type":"phrase_prefix","operator":"or"}}],"minimum_should_match":"1"}}}}]}},"size":20}
What am I missing to get the connection working? Do I need to add some kind of authentication in AWS and add passwords to the proxy code?
Is there a way to see some debugging info?
Thanks,
Phil