feat : 나중 구조적 통합을 위해 main쪽 비동기 로직으로 변경

MMOTestServer/ServerLib/Service/ServerBase.cs

@@ -61,7 +61,7 @@ public abstract class ServerBase : INetEventListener
         isListening = true;
     }
 
-    public virtual void Run()
+    public async Task Run()
     {
         netManager.Start(Port);
         Log.Information("[Server] 시작 Port={Port}", Port);
@@ -69,7 +69,7 @@ public abstract class ServerBase : INetEventListener
         while (isListening)
         {
             netManager.PollEvents();
-            Thread.Sleep(15);
+            await Task.Delay(1);
         }
         netManager.Stop();
         Log.Information("[Server] 종료 Port={Port}", Port);
@@ -193,7 +193,8 @@ public abstract class ServerBase : INetEventListener
         short code = reader.GetShort();
         short bodyLength = reader.GetShort();
         Log.Debug("[Echo] : addr={Addr}, str={Str}", peer.Address, reader.GetString());
-        SendTo(peer, payload);
+        // Echo메시지는 순서보장 안함 HOL Blocking 제거
+        SendTo(peer, payload, DeliveryMethod.ReliableUnordered);
     }
 
     // ─── Auth 처리 (내부) ────────────────────────────────────────────────