azure SSL tests : fix false positives from 6379 being closed

StackExchange.Redis.Tests/SSL.cs

@@ -13,10 +13,9 @@ public class SSL : TestBase
         public SSL(ITestOutputHelper output) : base (output) { }
 
         [Theory]
-        [InlineData(null, true)]
-        [InlineData(null, false)]
-        [InlineData(6380, true)]
-        [InlineData(6379, false)]
+        [InlineData(null, true)] // auto-infer port (but specify 6380)
+        [InlineData(6380, true)] // all explicit
+        // (note the 6379 port is closed)
         public void ConnectToAzure(int? port, bool ssl)
         {
             Skip.IfNoConfig(nameof(TestConfig.Config.AzureCacheServer), TestConfig.Current.AzureCacheServer);
@@ -279,4 +278,4 @@ public void SSLHostInferredFromEndpoints()
             Assert.True(options.SslHost == null);
         }
     }
-}
\ No newline at end of file
+}

StackExchange.Redis/StackExchange/Redis/PhysicalConnection.cs

@@ -868,7 +868,8 @@ async ValueTask<SocketMode> ISocketCallback.ConnectedAsync(Socket socket, TextWr
                 OnDebugAbort();
 
                 // the order is important here:
-                // [Socket]<==[NetworkStream]<==[SslStream]<==[
+                // non-TLS: [Socket]<==[SocketConnection:IDuplexPipe]
+                // TLS:     [Socket]<==[NetworkStream]<==[SslStream]<==[StreamConnection:IDuplexPipe]
                 var config = Multiplexer.RawConfig;
 
                 IDuplexPipe pipe;