System.IO.MemoryStream.Flush C# (CSharp) Method

        public override void Flush()
        {
        }

        public void With_WebSocket_CanReadSmallFrame()
        {
            var handshake = GenerateSimpleHandshake();
            using (var ms = new MemoryStream())
            using (WebSocket ws = new WebSocketRfc6455(ms, new WebSocketListenerOptions() { PingTimeout = Timeout.InfiniteTimeSpan }, new IPEndPoint(IPAddress.Parse("127.0.0.1"), 1), new IPEndPoint(IPAddress.Parse("127.0.0.1"), 2), handshake.Request,handshake.Response, handshake.NegotiatedMessageExtensions))
            {
                ms.Write(new Byte[] { 129, 130, 75, 91, 80, 26, 3, 50 }, 0, 8);
                ms.Flush();
                ms.Seek(0, SeekOrigin.Begin);

                var reader = ws.ReadMessageAsync(CancellationToken.None).Result;
                Assert.IsNotNull(reader);
                using (var sr = new StreamReader(reader, Encoding.UTF8, true, 1024, true))
                {
                    String s = sr.ReadToEnd();
                    Assert.AreEqual("Hi", s);
                }

                ms.Seek(0, SeekOrigin.Begin);
                ms.Write(new Byte[] { 129, 130, 75, 91, 80, 26, 3, 50 }, 0, 8);
                ms.Flush();
                ms.Seek(0, SeekOrigin.Begin);

                reader = ws.ReadMessageAsync(CancellationToken.None).Result;
                Assert.IsNotNull(reader);
                using (var sr = new StreamReader(reader, Encoding.UTF8, true, 1024, true))
                {
                    String s = sr.ReadToEndAsync().Result;
                    Assert.AreEqual("Hi", s);
                }
            }
        }