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如何在C#中计算UDP传输速率(kbps)?_C#_Sockets_Udp_Transfer_Rate - Fatal编程技术网

如何在C#中计算UDP传输速率(kbps)?

如何在C#中计算UDP传输速率(kbps)?,c#,sockets,udp,transfer,rate,C#,Sockets,Udp,Transfer,Rate,首先,我知道UDP不是一个可靠的协议,但我需要在UDP中使用它,我知道最终可能发生的后果 让我们假设我有一个长的字节数组,我将它分成32个字节的块,放入一个列表。这意味着发送的每个数据包的长度为32字节 这些数据包将以foreach循环发送,我不在乎它们是否到达目的地。这意味着我不期待主持人的确认(至少目前如此) 我的问题是,在服务器接收数据包时,如何计算当前的传输速率(最好是以kbps为单位) 我对如何实现这样的计算有些困惑…如果您的问题是“我如何计算传输速率”,您可以将下载的字节总数除以经过

首先,我知道UDP不是一个可靠的协议,但我需要在UDP中使用它,我知道最终可能发生的后果

让我们假设我有一个长的
字节
数组,我将它分成32个字节的块,放入一个
列表
。这意味着发送的每个数据包的长度为32字节

这些数据包将以
foreach
循环发送,我不在乎它们是否到达目的地。这意味着我不期待主持人的确认(至少目前如此)

我的问题是,在服务器接收数据包时,如何计算当前的传输速率(最好是以kbps为单位)

我对如何实现这样的计算有些困惑…

如果您的问题是“我如何计算传输速率”,您可以将下载的字节总数除以经过的总秒数

   bytes
 --------- = transfer rate
  seconds
用C#测量时间的一个好方法是类,因为计算机科学中的K是1024(或2^10),你可以将字节数除以1024(或移位),然后将其除以下载千字节数所需的秒数


如果您对平均传输速率感兴趣,则需要每隔一段时间测量下载的字节数。您可以使用二维列表来完成此操作,其中包含测量点、下载的字节和所用的时间。为简单起见,将其拆分为一个进行计算的类

private readonly Stopwatch watch;
private readonly long[,] average;

public .ctor() {
    // use 10 measure points, for a larger or smaller average, adjust the 10
    average = new long[10, 2];
    watch = Stopwatch.StartNew();
}

public long BytesTransferred {
    set {
        for (int i = average.GetLength(0) - 1; i > 0; --i) {
            average[i, 0] = average[i - 1, 0];
            average[i, 1] = average[i - 1, 1];
        }
        average[0, 0] = sent = value;
        average[0, 1] = watch.ElapsedMilliseconds;
    }
}

public long TransferRate {
    get {
        int l = average.GetLength(0) - 1;
        double bytes = average[0, 0] - average[l, 0];
        double seconds = (average[0, 1] - average[l, 1]) / 1000d;
        return (long)(bytes / seconds);
    }
}

在下载方法中,中断一个新线程,创建上述类的实例,并调用
ByTestTransferred=totalBytes在每个间隔中。每次调用TransferRate时都会计算转帐率。请注意,它是字节/秒,如果您需要另一个单位,请相应地除以1024。

我们在fireBwall上使用一个简单的系统,每次检查时都会更新传输速率。它还存储发送的全部信息。我刚刚从fireBwall的Google代码页上复制了这个

/// <summary>
/// Class to manage an adapters total transfered data
/// </summary>
public class BandwidthCounter
{
    /// <summary>
    /// Class to manage an adapters current transfer rate
    /// </summary>
    class MiniCounter
    {
        public uint bytes = 0;
        public uint kbytes = 0;
        public uint mbytes = 0;
        public uint gbytes = 0;
        public uint tbytes = 0;
        public uint pbytes = 0;
        DateTime lastRead = DateTime.Now;

        /// <summary>
        /// Adds bits(total misnomer because bits per second looks a lot better than bytes per second)
        /// </summary>
        /// <param name="count">The number of bits to add</param>
        public void AddBytes(uint count)
        {
            bytes += count;
            while (bytes > 1024)
            {
                kbytes++;
                bytes -= 1024;
            }
            while (kbytes > 1024)
            {
                mbytes++;
                kbytes -= 1024;
            }
            while (mbytes > 1024)
            {
                gbytes++;
                mbytes -= 1024;
            }
            while (gbytes > 1024)
            {
                tbytes++;
                gbytes -= 1024;
            }
            while (tbytes > 1024)
            {
                pbytes++;
                tbytes -= 1024;
            }
        }

        /// <summary>
        /// Returns the bits per second since the last time this function was called
        /// </summary>
        /// <returns></returns>
        public override string ToString()
        {
            if (pbytes > 0)
            {
                double ret = (double)pbytes + ((double)((double)tbytes / 1024));
                ret = ret / (DateTime.Now - lastRead).TotalSeconds;
                lastRead = DateTime.Now;
                string s = ret.ToString();
                if (s.Length > 6)
                    s = s.Substring(0, 6);
                return s + " Pb";
            }
            else if (tbytes > 0)
            {
                double ret = (double)tbytes + ((double)((double)gbytes / 1024));
                ret = ret / (DateTime.Now - lastRead).TotalSeconds;
                lastRead = DateTime.Now;
                string s = ret.ToString();
                if (s.Length > 6)
                    s = s.Substring(0, 6);
                return s + " Tb";
            }
            else if (gbytes > 0)
            {
                double ret = (double)gbytes + ((double)((double)mbytes / 1024));
                ret = ret / (DateTime.Now - lastRead).TotalSeconds;
                lastRead = DateTime.Now;
                string s = ret.ToString();
                if (s.Length > 6)
                    s = s.Substring(0, 6);
                return s + " Gb";
            }
            else if (mbytes > 0)
            {
                double ret = (double)mbytes + ((double)((double)kbytes / 1024));
                ret = ret / (DateTime.Now - lastRead).TotalSeconds;
                lastRead = DateTime.Now;
                string s = ret.ToString();
                if (s.Length > 6)
                    s = s.Substring(0, 6);
                return s + " Mb";
            }
            else if (kbytes > 0)
            {
                double ret = (double)kbytes + ((double)((double)bytes / 1024));
                ret = ret / (DateTime.Now - lastRead).TotalSeconds;
                lastRead = DateTime.Now;
                string s = ret.ToString();
                if (s.Length > 6)
                    s = s.Substring(0, 6);
                return s + " Kb";
            }
            else
            {
                double ret = bytes;
                ret = ret / (DateTime.Now - lastRead).TotalSeconds;
                lastRead = DateTime.Now;
                string s = ret.ToString();
                if (s.Length > 6)
                    s = s.Substring(0, 6);
                return s + " b";
            }
        }
    }

    private uint bytes = 0;
    private uint kbytes = 0;
    private uint mbytes = 0;
    private uint gbytes = 0;
    private uint tbytes = 0;
    private uint pbytes = 0;
    MiniCounter perSecond = new MiniCounter();

    /// <summary>
    /// Empty constructor, because thats constructive
    /// </summary>
    public BandwidthCounter()
    {

    }

    /// <summary>
    /// Accesses the current transfer rate, returning the text
    /// </summary>
    /// <returns></returns>
    public string GetPerSecond()
    {
        string s = perSecond.ToString() + "/s";
        perSecond = new MiniCounter();
        return s;
    }

    /// <summary>
    /// Adds bytes to the total transfered
    /// </summary>
    /// <param name="count">Byte count</param>
    public void AddBytes(uint count)
    {
        // overflow max
        if ((count * 8) >= Int32.MaxValue)
            return;

        count = 8 * count;
        perSecond.AddBytes(count);
        bytes += count;
        while (bytes > 1024)
        {
            kbytes++;
            bytes -= 1024;
        }
        while (kbytes > 1024)
        {
            mbytes++;
            kbytes -= 1024;
        }
        while (mbytes > 1024)
        {
            gbytes++;
            mbytes -= 1024;
        }
        while (gbytes > 1024)
        {
            tbytes++;
            gbytes -= 1024;
        }
        while (tbytes > 1024)
        {
            pbytes++;
            tbytes -= 1024;
        }
    }

    /// <summary>
    /// Prints out a relevant string for the bits transfered
    /// </summary>
    /// <returns></returns>
    public override string ToString()
    {
        if (pbytes > 0)
        {
            double ret = (double)pbytes + ((double)((double)tbytes / 1024));
            string s = ret.ToString();
            if (s.Length > 6)
                s = s.Substring(0, 6);
            return s + " Pb";
        }
        else if (tbytes > 0)
        {
            double ret = (double)tbytes + ((double)((double)gbytes / 1024));
            string s = ret.ToString();
            if (s.Length > 6)
                s = s.Substring(0, 6);
            return s + " Tb";
        }
        else if (gbytes > 0)
        {
            double ret = (double)gbytes + ((double)((double)mbytes / 1024));
            string s = ret.ToString();
            if (s.Length > 6)
                s = s.Substring(0, 6);
            return s + " Gb";
        }
        else if (mbytes > 0)
        {
            double ret = (double)mbytes + ((double)((double)kbytes / 1024));
            string s = ret.ToString();
            if (s.Length > 6)
                s = s.Substring(0, 6);
            return s + " Mb";
        }
        else if (kbytes > 0)
        {
            double ret = (double)kbytes + ((double)((double)bytes / 1024));
            string s = ret.ToString();
            if (s.Length > 6)
                s = s.Substring(0, 6);
            return s + " Kb";
        }
        else
        {
            string s = bytes.ToString();
            if (s.Length > 6)
                s = s.Substring(0, 6);
            return s + " b";
        }
    }
}
//
///类来管理传输的数据总量
/// 
公共类带宽计数器
{
/// 
///类来管理当前传输速率
/// 
类微型计数器
{
公共uint字节=0;
公共uint KB=0;
公共单位兆字节=0;
公共单位GB=0;
公共uint T字节=0;
公共uint字节=0;
DateTime lastRead=DateTime.Now;
/// 
///添加位(由于每秒的位数看起来比每秒的字节数好得多,所以用词不当)
/// 
///要添加的位数
公共void AddBytes(uint计数)
{
字节+=计数;
而(字节>1024)
{
千字节++;
字节-=1024;
}
而(千字节>1024)
{
兆字节++;
KB-=1024;
}
而(兆字节>1024)
{
GB++;
兆字节-=1024;
}
而(GB>1024)
{
tbytes++;
GB-=1024;
}
而(t字节>1024)
{
pbytes++;
t字节-=1024;
}
}
/// 
///返回自上次调用此函数以来每秒的位数
/// 
/// 
公共重写字符串ToString()
{
如果(字节数>0)
{
双ret=(双)字节+((双)((双)字节/1024));
ret=ret/(DateTime.Now-lastRead).TotalSeconds;
lastRead=DateTime.Now;
字符串s=ret.ToString();
如果(s.长度>6)
s=s.子串(0,6);
返回s+“Pb”;
}
否则如果(t字节>0)
{
双字节速率=(双)兆字节+((双)((双)兆字节/1024));
ret=ret/(DateTime.Now-lastRead).TotalSeconds;
lastRead=DateTime.Now;
字符串s=ret.ToString();
如果(s.长度>6)
s=s.子串(0,6);
返回s+“Tb”;
}
否则如果(GB>0)
{
double-ret=(double)GB+((double)((double)MB/1024));
ret=ret/(DateTime.Now-lastRead).TotalSeconds;
lastRead=DateTime.Now;
字符串s=ret.ToString();
如果(s.长度>6)
s=s.子串(0,6);
返回s+“Gb”;
}
否则,如果(兆字节>0)
{
double-ret=(double)MB+((double)((double)KB/1024));
ret=ret/(DateTime.Now-lastRead).TotalSeconds;
lastRead=DateTime.Now;
字符串s=ret.ToString();
如果(s.长度>6)
s=s.子串(0,6);
返回s+“Mb”;
}
否则如果(千字节>0)
{
double-ret=(double)kbytes+((double)((double)字节/1024));
ret=ret/(DateTime.Now-lastRead).TotalSeconds;
lastRead=DateTime.Now;
字符串s=ret.ToString();
如果(s.长度>6)
s=s.子串(0,6);
返回s+“Kb”;
}
其他的
{
双ret=字节;
ret=ret/(DateTime.Now-lastRead).TotalSeconds;
lastRead=DateTime.Now;
字符串s=ret.ToString();
如果(s.长度>6)
s=s.子串(0,6);
返回s+“b”;
}
}
}
私有uint字节=0;
专用uint KB=0;
专用uint兆字节=0;
私人单位