Check connection no more than once every 30 seconds

Tools/TestNetRewarder/Program.cs

@@ -1,5 +1,4 @@
 using ArgsUniform;
-using GethConnector;
 using Logging;
 using Utils;
 
@@ -12,6 +11,7 @@ namespace TestNetRewarder
         public static CancellationToken CancellationToken { get; private set; }
         public static BotClient BotClient { get; private set; } = null!;
         private static Processor processor = null!;
+        private static DateTime lastCheck = DateTime.MinValue;
 
         public static Task Main(string[] args)
         {
@@ -65,6 +65,9 @@ namespace TestNetRewarder
         private static async Task EnsureBotOnline()
         {
             var start = DateTime.UtcNow;
+            var timeSince = start - lastCheck;
+            if (timeSince.TotalSeconds < 30.0) return;
+
             while (! await BotClient.IsOnline() && !CancellationToken.IsCancellationRequested)
             {
                 await Task.Delay(5000);
@@ -77,6 +80,8 @@ namespace TestNetRewarder
                     throw new Exception(msg);
                 }
             }
+
+            lastCheck = start;
         }
 
         private static void PrintHelp()