PocketPC Text client for the NatMonitor Linux Daemon

• Download source files - 12 KB

Introduction

This is the text client of NatMonitor Linux Daemon. I get a network stream from my linux gateway, which provides any information needed for developping a client.

Code

This function reads the content of the ini file, which contains the server name, port, and download and upload limits.

public void ParseIni()
{
    String[] Str_Ini = new String[5];
    int ini=0;
    using (StreamReader sr
             = new StreamReader(@"\Program Files\NatMonitor\NatMonitor.ini")) 
    {
        for (ini=0; ini<5; ini++) 
        {
            Str_Ini[ini] = sr.ReadLine();
        }
    }
    string iniserver = Str_Ini[1].ToString();
    string iniport = Str_Ini[2].ToString();
    string inidl = Str_Ini[3].ToString();
    string iniup = Str_Ini[4].ToString();

    int startposserver = iniserver.LastIndexOf("=")+2;
    int startposport = iniport.LastIndexOf("=")+2;
    int startposdl = inidl.LastIndexOf("=")+2;
    int startposup = iniup.LastIndexOf("=")+2;

    char[] ch_server = new char[iniserver.Length-startposserver];
    char[] ch_port = new char[iniport.Length-startposport];
    char[] ch_dl = new char[inidl.Length-startposdl];
    char[] ch_up = new char[iniup.Length-startposup];

    iniserver.CopyTo(startposserver, ch_server, 0, 
                     iniserver.Length-startposserver);
    iniport.CopyTo(startposport, ch_port, 0, iniport.Length-startposport);

    inidl.CopyTo(startposdl, ch_dl, 0, inidl.Length-startposdl);
    iniup.CopyTo(startposup, ch_up, 0, iniup.Length-startposup);

    Download.server = new String(ch_server);


    String Str_port = new String(ch_port);
    Download.port = Int32.Parse(Str_port);
    String Str_dl = new String(ch_dl);
    Download.i_dl = Int32.Parse(Str_dl);
    String Str_up = new String(ch_up);
    Download.i_up = Int32.Parse(Str_up);
    Dns.GetHostByName(Download.server);
    Download.s_Legende = new string[10,7];
}

This function gets the network stream from the server

public void DownloadData()
{
    Download.tcpc = new TcpClient();
    //Try to connect to the server
    Download.tcpc.Connect(Download.server, Download.port);
    //Get the stream
    Download.s = Download.tcpc.GetStream();
}

public void AnalyseData()
{
    Byte[] read = new Byte[1600];
    Byte[] write = new Byte[8];
    Byte[] writeb = new Byte[8];
    ASCIIEncoding ascii = new ASCIIEncoding();

    writeb = ascii.GetBytes("mins");
    write[0] = writeb[0];
    write[1] = writeb[1];
    write[2] = writeb[2];
    write[3] = writeb[3];
    write[4] = 1;
    int j;

    UTF8Encoding unicode = new UTF8Encoding();

    //Read and convert to ASCII the stream
    Download.s.Write(write, 0, write.Length);
    Thread.Sleep(500);
    int bytes = Download.s.Read(read, 0, read.Length);

    //Display results
    int hosts=read[4];
    Download.nb_hosts=read[4]; //Get the number of hosts on the line
    int pos=16;
    ulong[,] resultsInt = new ulong[hosts,5];

    //Initialize images
    Bitmap bitleg = new Bitmap(Legende.Width, Legende.Height);
    Download.gLegende = Graphics.FromImage(bitleg);

    //TODO Gerer le time stamp
    for (int i=0; i<hosts; i++) 
    {
        Download.s_Legende[i,0]=read[pos]+"."+read[pos+1]+"."+read[pos+2]+
                                "."+read[pos+3];
        if (i==0) 
        {
            Download.s_Legende[i,0]+=" (Gateway)";
        }
        pos=pos+4; //Set pos after IP adress
        pos=pos+7; //Set pos after IN values
        int a;
        for (a=1; a<5; a++)
        {
            j=7;
            UInt64 result= new UInt64();
            while (read[pos]==0) 
            {
                j--;
                pos--;
                if (j==0){break;}
            }
            int k;
            int pass=0;
            for (k=j; k>=0; k--) 
            {
                if (pass==0) 
                {
                    result=(ulong)read[pos]<<(8*k);
                    pos--;
                    pass++;
                }
                else
                {
                    result=result|((ulong)read[pos]<<(8*k));
                    pos--;
                }
            }
            string resulttext;
            decimal resultdec;
            if (result>1024*1024*1024) 
            {
                resultdec=Decimal.Round(
                         Decimal.Divide(Decimal.Divide(Decimal.Divide(
                                           result,1024),1024),1024),2);
                resulttext=resultdec.ToString()+"GBps";
            }
            else if (result>1024*1024)
            {
                resultdec=Decimal.Round(Decimal.Divide(
                                   Decimal.Divide(result,1024),1024),2);
                resulttext=resultdec.ToString()+"MBps";
            }
            else if (result>1024)
            {
                resultdec=Decimal.Round(Decimal.Divide(result,1024),2);
                resulttext=resultdec.ToString()+"KBps";
            }
            else 
            {
                resulttext=result.ToString()+"Bps";
            }
            if (a==1)
            {
                if ((result*100/(ulong)Download.i_dl)<100)
                    Download.s_Legende[i,a+4]=(result*100 / 
                    (ulong)Download.i_dl).ToString()+"%";
                else
                    Download.s_Legende[i,a+4]="100%";
            }
            else if (a==2)
            {
                if ((result*100/(ulong)Download.i_up)<100)
                    Download.s_Legende[i,a+4]=(result*100 / 
                    (ulong)Download.i_up).ToString()+"%";
                else
                    Download.s_Legende[i,a+4]="100%";
            }
            
            Download.s_Legende[i,a]=resulttext;
            if (a!=4)
            {
                pos=pos+16;
            }
            else
            {
                pos=pos+9;
            }
        }
    }

    Download.cFont = new Font(FontFamily.GenericSansSerif, 9, 
                              FontStyle.Regular);
    Download.cBrush = new SolidBrush(Color.White);
    Download.gLegende.FillRectangle(Download.cBrush,0,0,
                                    Legende.Width,Legende.Height);

    for (int i=0; i<hosts; i++)
    {
        switch (i) 
        {
            case 0 :
                Download.cBrush = new SolidBrush(Color.Black);
                break;
            case 1 : 
                Download.cBrush = new SolidBrush(Color.Red);
                break;
            case 2 : 
                Download.cBrush = new SolidBrush(Color.Green);
                break;
            case 3 :
                Download.cBrush = new SolidBrush(Color.Blue);
                break;
            case 4 :
                Download.cBrush = new SolidBrush(Color.Orange);
                break;
            case 5 :
                Download.cBrush = new SolidBrush(Color.Magenta);
                break;
            case 6 :
                Download.cBrush = new SolidBrush(Color.Cyan);
                break;
            default :
                Download.cBrush = new SolidBrush(Color.Gray);
                break;
        }
        Download.gLegende.DrawString(Download.s_Legende[i,0], 
                              Download.cFont, Download.cBrush, 1, 28*i);
        Download.gLegende.DrawString(Download.s_Legende[i,1], 
                              Download.cFont, Download.cBrush, 1, 28*i+13);
        Download.gLegende.DrawString(Download.s_Legende[i,2], 
                              Download.cFont, Download.cBrush, 71, 28*i+13);
        Download.gLegende.DrawString(Download.s_Legende[i,5], 
                              Download.cFont, Download.cBrush, 151, 28*i);
        Download.gLegende.DrawString(Download.s_Legende[i,6], 
                              Download.cFont, Download.cBrush, 191, 28*i);
    }
    Legende.Image = bitleg;
    Legende.Refresh();
}

Resources

I get informations near Nicolas Gaillet who is the developer of NatMonitor client for windows, and Piero Filipin who is the NatMonitor linux daemon developer.