void receiveName(DetectedPLC plc)
{
UdpClient udp = RecieveUDP();
IPEndPoint PLCEndPoint = new IPEndPoint(IPAddress.Any, thisEndPoint.Port);
try
{
byte[] received = udp.Receive(ref PLCEndPoint);
if (PacketBuilder.CheckData(received))
{
int length = 0;
for (length = 0; length < received.Length; length++)
{
if (received[length + 11] == 0x00)
{
break;
}
}
plc.Name = System.Text.Encoding.UTF8.GetString(received, 11, length);
}
}
catch
{
plc.Name = String.Empty;
}
}
public void changeIP(DetectedPLC plc, IPAddress IP)
{
byte[] ip = IP.GetAddressBytes();
UdpClient udp = NewBroadcastUDP();
byte[] data = { 0x15, plc.MAC[0], plc.MAC[1], plc.MAC[2], plc.MAC[3], plc.MAC[4], plc.MAC[5], 0x0c, 0x00, 0x10, 0x00, ip[0], ip[1], ip[2], ip[3] };
byte[] packet = PacketBuilder.BuildHeader(data);
udp.Send(packet, packet.Length);
udp.EnableBroadcast = false;
udp.Close();
}
void requestIP(DetectedPLC plc)
{
UdpClient udp = NewBroadcastUDP();
byte[] data = new byte[11];
data[0] = 0x15;
Array.Copy(plc.MAC, 0, data, 1, plc.MAC.Length);
data[7] = 0x0b;
data[9] = 0x10;
byte[] packet = PacketBuilder.BuildHeader(data);
udp.Send(packet, packet.Length);
udp.Close();
}
void receiveIP(DetectedPLC plc)
{
UdpClient udp = RecieveUDP();
IPEndPoint PLCEndPoint = new IPEndPoint(IPAddress.Any, thisEndPoint.Port);
try
{
byte[] received = udp.Receive(ref PLCEndPoint);
if (PacketBuilder.CheckData(received))
{
byte[] ip = new byte[4];
Array.Copy(received, 11, ip, 0, 4);
plc.InternalIP = new IPAddress(ip);
}
}
catch
{
plc.InternalIP = IPAddress.None;
}
}
public void getPLCInfo(DetectedPLC PLC = null)
{
if (PLC == null)
{
foreach (DetectedPLC plc in PLCList)
{
requestName(plc);
receiveName(plc);
requestIP(plc);
receiveIP(plc);
Console.WriteLine(plc.IP + ": " + BitConverter.ToString(plc.MAC));
Console.WriteLine("\t" + plc.Name + " " + plc.InternalIP);
}
}
else
{
requestName(PLC);
receiveName(PLC);
requestIP(PLC);
receiveIP(PLC);
Console.WriteLine(PLC.IP + ": " + BitConverter.ToString(PLC.MAC));
Console.WriteLine("\t" + PLC.Name + " " + PLC.InternalIP);
}
}
void populatePLCList()
{
UdpClient udp = RecieveUDP();
IPEndPoint PLCEndPoint = new IPEndPoint(IPAddress.Any, thisEndPoint.Port);
Stopwatch UDPReceiveTimeout = new Stopwatch();
bool timeout = false;
while (!timeout)
{
if (!UDPReceiveTimeout.IsRunning)
{
UDPReceiveTimeout.Start();
}
else
{
UDPReceiveTimeout.Stop();
UDPReceiveTimeout.Reset();
UDPReceiveTimeout.Start();
}
bool dataready = false;
while (UDPReceiveTimeout.ElapsedMilliseconds < maxmillis && !dataready)
{
if (udp.Available > 0)
{
dataready = true;
}
}
if (dataready)
{
try
{
byte[] received = udp.Receive(ref PLCEndPoint);
if (PacketBuilder.CheckData(received) && received[9] == 0x55 && received[10] == 0xaa)
{
DetectedPLC plc = new DetectedPLC(PLCEndPoint.Address);
Array.Copy(received, 11, plc.MAC, 0, plc.MAC.Length);
bool newplc = true;
foreach (DetectedPLC old in PLCList)
{
if (plc.IP.ToString() == old.IP.ToString())
{
newplc = false;
}
}
if (newplc)
{
PLCbs.Add(plc);
}
}
}
catch
{
timeout = true;
}
}
else
{
timeout = true;
}
}
udp.Close();
}
DetectedPLC getNewPLC()
{
UdpClient udp = RecieveUDP();
IPEndPoint PLCEndPoint = new IPEndPoint(IPAddress.Any, thisEndPoint.Port);
Stopwatch UDPReceiveTimeout = new Stopwatch();
bool timeout = false;
UDPReceiveTimeout.Reset();
while (!timeout)
{
if (UDPReceiveTimeout.IsRunning)
{
UDPReceiveTimeout.Stop();
UDPReceiveTimeout.Reset();
UDPReceiveTimeout.Start();
}
else
{
UDPReceiveTimeout.Start();
}
bool dataready = false;
while (UDPReceiveTimeout.ElapsedMilliseconds < maxmillis && !dataready)
{
if (udp.Available > 0)
{
dataready = true;
}
}
if (dataready)
{
try
{
byte[] received = udp.Receive(ref PLCEndPoint);
if (PacketBuilder.CheckData(received))
{
if (received[9] == 0x55 && received[10] == 0xaa)
{
DetectedPLC plc = new DetectedPLC(PLCEndPoint.Address);
bool newplc = true;
foreach (DetectedPLC old in PLCList)
{
if (old.IP.ToString() == plc.IP.ToString())
{
newplc = false;
}
}
if (newplc)
{
Console.WriteLine("new plc detected! IP: " + plc.IP);
Array.Copy(received, 11, plc.MAC, 0, plc.MAC.Length);
getPLCInfo(plc);
udp.Close();
return(plc);
}
}
}
}
catch
{
timeout = true;
Console.WriteLine("timeout");
}
}
else
{
timeout = true;
}
}
udp.Close();
return(null);
}
