Is it correct to create EventHubClient for every message I send?

Creating a client directly using the EventHubClient.CreateFromConnectionString(...) will create a new tcp connection for each client.However, when creating the client using a shared MessagingFactory

var factory = MessagingFactory.CreateFromConnectionString("your_connection_string");var client = factory.CreateEventHubClient("MyEventHub");

the client will reuse the underlying tcp connection. From the docs: Create an Event Hubs client

No, It's necessary to create a new EventHubClient using the MessageFactory only the first time. If I create a Client for every message I send, then a new connection is created and the old one remain opened (checked using netstat) resulting in a lot of "ESTABILISHED" connections.

Using a single client created for the first message, then recycling the client for the other messages, if the internet connection is lost then comes back, the tcp connection is automatically re-created.

Here is an example of a client creation using factory:

            var endpointUri = ServiceBusEnvironment.CreateServiceUri("sb", eventHubNamespace, string.Empty);            MessagingFactory factory = MessagingFactory.Create(endpointUri, new MessagingFactorySettings            {                TokenProvider = TokenProvider.CreateSharedAccessSignatureTokenProvider(sasToken),                TransportType = TransportType.Amqp            });            factory.RetryPolicy = new RetryExponential(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(30), 3);            client = factory.CreateEventHubClient(eventHubName);