fix : await 버그 픽스

ClientTester/EchoClientTester/Program.cs

@@ -9,7 +9,7 @@ class EcoClientTester
     public static readonly string CONNECTION_KEY = "test";
     public static readonly int CLIENT_COUNT = 100;
 
-    private async void StartEchoDummyTest()
+    private async Task StartEchoDummyTest()
     {
         try
         {
@@ -44,7 +44,7 @@ class EcoClientTester
         }
     }
 
-    private async void StartDummyTest()
+    private async Task StartDummyTest()
     {
         try
         {
@@ -105,12 +105,12 @@ class EcoClientTester
         if (choice == 1)
         {
             // 에코 서버 실행
-            tester.StartEchoDummyTest();
+            await tester.StartEchoDummyTest();
         }
         else if (choice == 2)
         {
             // 더미 클라 실행
-            tester.StartDummyTest();
+            await tester.StartDummyTest();
         }
     }
 }