C# TcpClient Send 方法有时需要太长时间

Question

If I'm sending data too fast the .Send method takes really long. I'm talking up to 20 ms here, which is not an option for my application. What causes this? And how can I avoid it?

Some test code that reproduces the problem: test client:

            var lol = new TcpClient();
        lol.Connect(IPAddress.Parse("123.123.123.123"), 1234);

        while (true)
        {
            var watchy = Stopwatch.StartNew();
            lol.Client.Send(new byte[] {123, 34, 34, 98, 45, 87, 34, 78, 45, 76, 45, 23, 154, 146, 1, 1, 1, 11, 66}); // random test data
            watchy.Stop();

            Console.WriteLine(watchy.Elapsed.TotalMilliseconds);

            if (watchy.Elapsed.TotalMilliseconds > 1)
                Console.ReadLine();
        }

test server:

            var listener = new TcpListener(IPAddress.Any, 1234);
        listener.Start();
        var clients = new List<TcpClient>();

        while (true)
        {
            if (listener.Pending())
            {
                clients.Add(listener.AcceptTcpClient());
                Console.WriteLine("client connected!");
            }

            foreach (var tcpClient in clients)
            {
                var data = new byte[tcpClient.Available];
                tcpClient.Client.Receive(data);
                Console.WriteLine(string.Join(" ", data));
            }
        }

I think the receiver can't process the data fast enough. But how can I check if I'm currerntly able to send data without the delay? I'm sending to multiple clients, which means that other clients will experience lag because one client wasn't able to process the data fast enough

Answer 1

我通过将 .Blocking of the socket 设置为 false 解决了这个问题