Intermittent SSL errors while calling ElasticSearch Cluster

NEST/Elasticsearch.Net version: 7.7.1

Elasticsearch version: 7.7 (TLS support 1.0 and above)

Description of the problem including expected versus actual behaviour: I have aspnet core client, that is calling ElasticSearch cluster. What I notice is, every once in a while, some requests return SSL errors.

Here we can see 8 of these errors occurred.

Expected behaviour SSL errors should not happen intermittently.

Client setup: the client is registered as follows: services.AddSingleton<IEsClient>(sp => { var connectionPool = new SingleNodeConnectionPool(new Uri(serviceEndpoints.ESUrl)); var settings = new ConnectionSettings(connectionPool); return new esclient(settings); });

Provide DebugInformation (if relevant): Part of the stack trace

---> System.IO.IOException: Authentication failed because the remote party has closed the transport stream.
at System.Net.Security.SslStream.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest) ```

[sandeeppnaik]

Thanks Steve, I will post an update here once I solve this mystery !

[stevejgordon]

@sandeeppnaik I’ll close this issue for now but please do feel free to update with any further details that may assist others if they run into this.