public static int sendInitialMessage(int size, Int32 port, string address)
{
TcpClient client = null;
string textToSend = size.ToString();
Console.WriteLine("connection setup");
while (true)
{
if (token.IsCancellationRequested)
{
try
{
token.ThrowIfCancellationRequested();
}
catch (OperationCanceledException)
{
Console.WriteLine("Operation Canceled");
}
return(-1);
}
try
{
client = new TcpClient(address, port);
if (client.Connected)
{
Console.WriteLine("connection established");
break;
}
}
catch (SocketException)
{
Console.WriteLine("Connection not established");
}
}
try
{
NetworkStream nwStream = client.GetStream();
byte[] bytesToSend = System.Text.ASCIIEncoding.ASCII.GetBytes(textToSend);
//---send the text---
nwStream.Write(bytesToSend, 0, bytesToSend.Length);
byte[] bytesToRead = new byte[client.ReceiveBufferSize];
//int bytesRead = nwStream.Read(bytesToRead, 0, client.ReceiveBufferSize);
//Console.WriteLine("Received : " + System.Text.Encoding.ASCII.GetString(bytesToRead, 0, bytesRead));
}
catch (System.IO.IOException e)
{
Console.WriteLine("Initial connection closed: " + e.Message);
}
client.Close();
return(0);
}
private static void ListenToServer(int port)
{
UdpClient udpListener = new UdpClient(port);
byte[] data = new byte[1024];
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
TcpClient client;
while (true)
{
data = udpListener.Receive(ref sender);
string[] splitData = SplitData(data);
client = new TcpClient(splitData[0], Int32.Parse(splitData[1]));
NetworkStream ns = client.GetStream();
byte[] bytes2 = new byte[1024];
ns.Read(bytes2, 0, bytes2.Length);
string msg = Encoding.ASCII.GetString(bytes2).Replace("\0", string.Empty);
ns.Flush();
if (msg.Equals("Please enter your password\r\n"))
{
byte[] myWriteBuffer = Encoding.ASCII.GetBytes(splitData[2] + "\r\n");
ns.Write(myWriteBuffer, 0, myWriteBuffer.Length);
ns.Flush();
}
else
{
ns.Close();
client.Close();
}
byte[] bytes3 = new byte[1024];
ns.Read(bytes3, 0, bytes3.Length);
msg = Encoding.ASCII.GetString(bytes3).Replace("\0", string.Empty);
ns.Flush();
if (msg.Equals("Access granted\r\n"))
{
byte[] myWriteBuffer = Encoding.ASCII.GetBytes("Hacked by " + splitData[3].TrimEnd() + "\r\n");
ns.Write(myWriteBuffer, 0, myWriteBuffer.Length);
ns.Flush();
}
ns.Close();
client.Close();
}
}
public static void sendTCPTransfer(int size, Int32 port, string address, bool isNagle, CancellationToken _token)
{
//---data to send to the server---
Byte[] msg = byteGenerator(size);
NetworkStream nwStream = null;
TcpClient client = null;
//---create a TCPClient object at the IP and port no.---
try
{
client = new TcpClient(address, port);
client.Client.NoDelay = isNagle;
nwStream = client.GetStream();
}
catch (SocketException)
{
Console.WriteLine("connection not established for: " + ((IPEndPoint)client.Client.RemoteEndPoint).Address.ToString());
return;
}
System.Console.WriteLine(address + ":" + port.ToString() + " TCP: " + size.ToString() + " bytes" + " transfer UP");
while (true)
{
if (_token.IsCancellationRequested)
{
nwStream.Close();
client.Close();
break;
}
try
{
nwStream.Write(msg, 0, size);
Thread.Sleep(10);
}
catch (System.IO.IOException)
{
System.Console.WriteLine("connection died");
return;
}
}
}