[Harness] If we cannot connect over tcp use Console.Out as the writer. (

#8235)

If we could not connect to the host via tcp, set the writer to be
Console.Out which will fix the NRE and will report the test run in the
runlogs.

fixes: #8130

tests/xharness/TestImporter/Templates/Managed/Resources/src/iOSApp/ViewController.cs

@@ -102,7 +102,7 @@ public async override void ViewDidLoad ()
 				break;
 			}
 			if (options.EnableXml) {
-				runner.WriteResultsToFile (writer, jargon);
+				runner.WriteResultsToFile (writer ?? Console.Out, jargon);
 				logger.Info ("Xml file was written to the tcp listener.");
 			} else {
 				string resultsFilePath = runner.WriteResultsToFile (jargon);

tests/xharness/TestImporter/Templates/Managed/Resources/src/tvOSApp/ViewController.cs

@@ -64,8 +64,14 @@ public async override void ViewDidLoad ()
 			base.ViewDidLoad ();
 			var options = ApplicationOptions.Current;
 			TcpTextWriter writer = null;
-			if (!string.IsNullOrEmpty (options.HostName))
-				writer = new TcpTextWriter (options.HostName, options.HostPort);
+			if (!string.IsNullOrEmpty (options.HostName)) {
+				try {
+					writer = new TcpTextWriter (options.HostName, options.HostPort);
+				} catch (Exception ex) {
+					Console.WriteLine ("Network error: Cannot connect to {0}:{1}: {2}. Continuing on console.", options.HostName, options.HostPort, ex);
+					writer = null; // will default to the console
+				}
+			}
 
 			// we generate the logs in two different ways depending if the generate xml flag was
 			// provided. If it was, we will write the xml file to the tcp writer if present, else
@@ -97,7 +103,7 @@ public async override void ViewDidLoad ()
 				break;
 			}
 			if (options.EnableXml) {
-				runner.WriteResultsToFile (writer, jargon);
+				runner.WriteResultsToFile (writer ?? Console.Out, jargon);
 				logger.Info ("Xml file was written to the tcp listener.");
 			} else {
 				string resultsFilePath = runner.WriteResultsToFile (jargon);