System.Net.WebSockets.WebSocket.CloseAsync C# (CSharp) Method

        public abstract System.Threading.Tasks.Task CloseAsync(System.Net.WebSockets.WebSocketCloseStatus closeStatus, string statusDescription, System.Threading.CancellationToken cancellationToken);
        public abstract System.Threading.Tasks.Task CloseOutputAsync(System.Net.WebSockets.WebSocketCloseStatus closeStatus, string statusDescription, System.Threading.CancellationToken cancellationToken);

        public async Task ProcessWebSocket(HttpContext context, WebSocket webSocket)
        {
            var connection = new Connection(context, webSocket);
            Console.WriteLine("Connect: {0}", context.Connection.RemoteIpAddress);

            var cancelToken = CancellationToken.None;
            var buffer = new byte[1024];
            WebSocketReceiveResult received =
                await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cancelToken);

            while (!webSocket.CloseStatus.HasValue)
            {
                string text = System.Text.Encoding.UTF8.GetString(buffer, 0, received.Count);

                Console.WriteLine("Recd: {0}", text);

                try
                {
                    Cmd.Parse(text, connection)?.Run();
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Unhandled exception: {0}", ex);
                }

                received = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cancelToken);
            }

            await webSocket.CloseAsync(webSocket.CloseStatus.Value, webSocket.CloseStatusDescription, cancelToken);
        }