ASP.NET 网络上传下载速率检测

前段时间， 公司要求做一个检测客户端网络上传/下载速率的问题，想来想去没什么好的方法做，最后用了一种不是很理想的方法实现，其原理就是上传时，从客户端POST 相应大小的数据包到服务器，计算这个过程完成所需的时间；下载也同样的道理，就是从服务器下载相应大小的数据包到客户端。

下面我就把代码共享下，供大家参考吧....

using System.Threading;
using System.IO;
using System.Net;

public class SpeedEntity
    {
        private const string LOCAL_FILE = @"C:\Temp\SpeedTest.tmp";
        private const int FILE_SIZE = 102400;

        private string strDownLoadFile = string.Empty;
        private string strUpLoadFile = string.Empty;

        /// <summary>
        /// Download File
        /// </summary>
        public string DownLoadFile
        {
            get { return this.strDownLoadFile; }
            set { this.strDownLoadFile = value; }
        }

        /// <summary>
        /// Upload File
        /// </summary>
        public string UpLoadFile
        {
            get { return this.strUpLoadFile; }
            set { this.strUpLoadFile = value; }
        }

        /// <summary>
        ///
        /// </summary>
        /// <param name="p_downLoadFile"></param>
        /// <param name="p_upLoadFile"></param>
        public SpeedEntity(string p_downLoadFile, string p_upLoadFile)
        {
            this.strDownLoadFile = p_downLoadFile;
            this.strUpLoadFile = p_upLoadFile;  
        }

        // NetWork DownLoad Speed Check
        public double DownloadSpeedCheck()
        {
            // this is a test file in download server, the is must config and the fils size is 100K.
            //string strDistFile = @"http://192.168.0.104:86/DownLoadFile/SpeedFile.rar";
            string strDistFile = strDownLoadFile;

            // Begin Time
            DateTime dtStart = DateTime.Now;

            WebClient wc = new WebClient();
            wc.DownloadFile(strDistFile, LOCAL_FILE);

            // End Time
            DateTime dtEnd = DateTime.Now;

            TimeSpan ts = new TimeSpan();
            ts = dtEnd - dtStart;
            double intMinSecond = ts.TotalMilliseconds;

            FileInfo file = new FileInfo(LOCAL_FILE);

            double downSpeedNum = file.Length * 1000.0 / intMinSecond;

            System.Threading.Thread.Sleep(1000);

            return downSpeedNum;
        }

        // Check Upload Speed
        public double UploadSpeedCheck()
        {
            if (!File.Exists(LOCAL_FILE))
                this.DownloadSpeedCheck();

            // this is server request upload file , the is must config and the fils size is 100K.
            //string strDistServer = @"http://192.168.0.104:86/UploadFileWeb/ClientFileUpload.aspx";
            string strDistServer = strUpLoadFile;

            // Begin Time
            DateTime dtStart = DateTime.Now;

            WebClient wc = new WebClient();
            byte[] responseArray = wc.UploadFile(strDistServer, "POST", LOCAL_FILE);

            // EndTime
            DateTime dtEnd = DateTime.Now;

            TimeSpan ts = new TimeSpan();
            ts = dtEnd - dtStart;
            double intMinSecond = ts.TotalMilliseconds;

            FileInfo file = new FileInfo(LOCAL_FILE);

            double uploadSpeedNum = file.Length * 1000.0 / intMinSecond;

            System.Threading.Thread.Sleep(1000);
            return uploadSpeedNum;

        }

        // Get BPS/Sec Format Information
        public string BpsToString(double bps)
        {
            string[] m = new string[] { "bytes", "Kbps", "Mbps", "Gbps", "TB", "PB", "EB", "ZB", "YB" }; //dreaming of YB/sec
            int i = 0;
            while (bps >= 0.9 * 1024)
            {
                bps /= 1024;
                i++;
            }

            return String.Format("{0:0.00} {1}", bps, m[i]);
        }

    }