[Apiman-user] Having trouble connecting to Amazon Elasticsearch service

Not quite sure what to make of this: I'm getting org.apache.http.NoHttpResponseException: [endpoint_URI]:443 failed to respond But if I do: curl https://[endpont_URI]:443 I get a response from Elasticsearch-this is because I have the Amazon Elasticsearch instance permissioned to accept any connections from the IP address where apiman is running. The apiman configurations look like this: apiman.es.protocol=http apiman.es.host=[endpoint_URI] apiman.es.port=443 apiman.es.username= apiman.es.password= Changing protocol from http to https doesn't appear to help, nor does removing the username and password properties entirely. Any suggestions?