Small refactor for receiving messages from websockets

Websockets/WebsocketManager.cs

@@ -19,4 +19,18 @@ public static class WebsocketManager
             SendAsync(socket, message);
         }
     }
+    
+    public static async Task<WebSocketResponse> ReceiveAsync(WebSocket webSocket)
+    {
+        var buffer = new byte[4096];
+        var arraySegment = new ArraySegment<byte>(buffer);
+        var result = await webSocket.ReceiveAsync(arraySegment, CancellationToken.None);
+        var slicedBuffer = buffer[0..result.Count];
+        return new WebSocketResponse(result, slicedBuffer);
+    }
+    
+    public static async void CloseAsync(WebSocket webSocket, WebSocketReceiveResult result)
+    {
+        await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
+    }
 }