set the transport type to AmqpWebSockets

Author: spelluru

articles/service-bus-messaging/service-bus-dotnet-get-started-with-queues.md

@@ -115,8 +115,11 @@ This section shows you how to create a .NET Core console application to send mes
             // of the application, which is best practice when messages are being published or read
             // regularly.
             //
-            // Create the clients that we'll use for sending and processing messages.
-            client = new ServiceBusClient(connectionString);
+            // set the transport type to AmqpWebSockets so that the ServiceBusClient uses the port 443. 
+            // If you use the default AmqpTcp, you will need to make sure that the ports 5671 and 5672 are open
+
+            var clientOptions = new ServiceBusClientOptions() { TransportType = ServiceBusTransportType.AmqpWebSockets };
+            client = new ServiceBusClient(connectionString, clientOptions);
             sender = client.CreateSender(queueName);
     
             // create a batch