c# 测试服务器和客户端应用程序之间的带宽

Question

我是编程新手。对于我的第一个应用程序，我决定创建两个控制台应用程序 - 服务器和客户端应用程序。我想测试客户端和服务器应用程序之间的数据事务带宽（通过我使用套接字的方式）。我遇到的问题是我需要测试连接速度，比如说 10 秒，在这 10 秒之后，我需要获取接收到的数据量（我在这段时间内收到的数据量）并计算速度......我该怎么做那个？

客户端应用

namespace Example_01_Sockets_Client
{
class MainClass
{
    public static void Main(string[] args)
    {
        try
        {
            var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            var ownAddress = IPAddress.Parse("127.0.0.1");
            var ownEndpoint = new IPEndPoint(ownAddress, 4321);

            socket.Bind(ownEndpoint);

            Console.WriteLine();
            Console.WriteLine("Trying to connect to server...");
            var serverAddress = IPAddress.Parse("127.0.0.1");
            socket.Connect(serverAddress, 2222);
            Console.WriteLine("Connected to server");

            var buffer = new byte[1024 * 150000];
            socket.ReceiveTimeout = 100;

            int receivedBytesLen = socket.Receive(buffer);

            Console.WriteLine("Download speed: " + ((receivedBytesLen) / 100 + "kb/s ") );

            Console.WriteLine("Press any key to exit");
            Console.ReadKey();
            socket.Close();
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }
}
}

服务器应用

class MainClass
{
    public static void Main(string[] args)
    {
        bool exit = false;

        while (!exit)
        {
            var listeningSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
            IPEndPoint localEndpoint = new IPEndPoint(ipAddress, 2222);

            listeningSocket.Bind(localEndpoint);
            listeningSocket.Listen(1);

            Console.WriteLine();
            Console.WriteLine("Waiting for client...");
            Socket connectedSocket = listeningSocket.Accept();
            listeningSocket.Close();
            string clientAddress = connectedSocket.RemoteEndPoint.ToString();
            Console.WriteLine("Client connected (" + clientAddress + ")");

            string fileName = "downTest.txt";
            byte[] fileNameByte = Encoding.ASCII.GetBytes(fileName);

            byte[] fileData = File.ReadAllBytes(fileName);
            byte[] clientData = new byte[4 + fileNameByte.Length + fileData.Length];
            byte[] fileNameLen = BitConverter.GetBytes(fileNameByte.Length);

            fileNameLen.CopyTo(clientData, 0);
            fileNameByte.CopyTo(clientData, 4);
            fileData.CopyTo(clientData, 4 + fileNameByte.Length);

            connectedSocket.Send(fileData);

            //int bytesReceived = connectedSocket.Receive();

            Console.WriteLine("Client connected (" + clientAddress + ")");

            connectedSocket.Close();
        }
    }
}

感谢您的帮助！！！

Answer 1

为什么不使用一定数量的数据（例如 4,096kb）。在客户端开始下载数据之前，使用 Stopwatch 类启动计时器，然后在完成发送后立即停止计时器。然后，您可以使用 elapsed time 属性来确定发送固定数量的数据需要多长时间。

            Stopwatch timer = new Stopwatch();
            timer.Start();

            // Download data here

            timer.Stop();

            int elapsedTime = timer.Elapsed.TotalSeconds;