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();
Download.tcpc.Connect(Download.server, Download.port);
Download.s = Download.tcpc.GetStream();
}
After I get the stream, I analyse the data:
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();
Download.s.Write(write, 0, write.Length);
Thread.Sleep(500);
int bytes = Download.s.Read(read, 0, read.Length);
int hosts=read[4];
Download.nb_hosts=read[4]; int pos=16;
ulong[,] resultsInt = new ulong[hosts,5];
Bitmap bitleg = new Bitmap(Legende.Width, Legende.Height);
Download.gLegende = Graphics.FromImage(bitleg);
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; pos=pos+7; 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.
