내 공부 > 프로그래밍


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현재접속자 : 1 (회원 0)

내 공부 > 프로그래밍

작성일 : 16-02-04 15:40

텔넷 구현

글쓴이 : Minuk Y.

class Program
{
static StreamReader input;
static StreamWriter output;
static NetworkStream telnetStream;
static Boolean isReading= false;
static Boolean isConnected = false;
static void Main(string[] args)
{
TcpClient telnet = new TcpClient();
while (!telnet.Connected)
{
try {
telnet = new TcpClient("192.168.0.200", 23);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
telnetStream = telnet.GetStream();
output = new StreamWriter(telnetStream);
input = new StreamReader(telnetStream);
Thread streamReadingThread = new Thread(new ThreadStart(readStream));
streamReadingThread.Start();

if (input != null) isReading = true;

ConsoleKeyInfo keyinfo;
int Xcnt = 0;

while (true)
{
keyinfo = Console.ReadKey();
Console.WriteLine(keyinfo.Key + " was pressed");
if (keyinfo.Key == ConsoleKey.X) Xcnt++;
else Xcnt = 0;
if (Xcnt > 5) break;
}
isReading = false;
telnet.Close();
}
static String rcvRSSI = "";
static Char readChar = ' ';
static Byte[] backSpace = { 8, 8, 8, 8, 8, 8, 8, 8, 8, 8 };
static Char[] login = "login:".ToCharArray(0, 6);// { 'l', 'o', 'g', 'i', 'n', ':' };
static Char[] passwd = "Password:".ToCharArray(0, 9);//{ 'p', 'a', 's', 's', 'w', 'o', 'r', 'd', ':' };
static Char[] IPnDDL = "IPnDDL>".ToCharArray(0, 7);
static Char[] RSSI = "RSSI : ".ToCharArray(0, 7);
static void readStream()
{
int nlogin = 0;
int npasswd = 0;
int nIPnDDL = 0;
int nRSSI = 0;
while (isReading)
{
if (telnetStream.CanRead)
{
readChar = (Char)telnetStream.ReadByte();
//Console.Write(readChar);
String sndMsg = "";

if (readChar == login[nlogin]) nlogin++;
else nlogin = 0;
if (nlogin == 6)
{
sndMsg = "admin\n";
nlogin = 0;
}

if (readChar == passwd[npasswd]) npasswd++;
else npasswd = 0;
if (npasswd == 9)
{
sndMsg = "admin\n";
npasswd = 0;
}

if (readChar == IPnDDL[nIPnDDL]) nIPnDDL++;
else nIPnDDL = 0;
if (nIPnDDL == 7)
{
Thread.Sleep(10);
telnetStream.Write(backSpace, 0, 8);
sndMsg = "AT+WRSSI?";
nIPnDDL = 0;
}
if (nRSSI < 7)
{
if (readChar == RSSI[nRSSI]) nRSSI++;
else nRSSI = 0;
}
else
{
nRSSI++;
rcvRSSI += readChar;
if(nRSSI==10)
{
Double rssi = Double.Parse(rcvRSSI);
Double signal = 0.02 * (rssi + 100);
if (signal > 1) signal = 1.0;
Console.WriteLine(rssi.ToString("0db") + " " +signal.ToString("0%"));
nRSSI = 0;
rcvRSSI = "";
}
}
Char[] sndChars = sndMsg.ToCharArray();
Byte[] sndBytes = new Byte[sndChars.Length];
for(int i=0;i< sndChars.Length;i++)
sndBytes[i] = (Byte)sndChars[i];

telnetStream.Write(sndBytes, 0, sndBytes.Length);
}
}
}
}