public static void SendReceive(string text)
{
Socket socket = null;
IPHostEntry hostEntry = Dns.GetHostEntry(TCPDefinitions.IP);
// Loop through the AddressList to obtain the supported AddressFamily. This is to avoid
// an exception that occurs when the host IP Address is not compatible with the address family
// (typical in the IPv6 case).
foreach (IPAddress address in hostEntry.AddressList)
{
IPEndPoint endPoint = new IPEndPoint(address, TCPDefinitions.PORT_SHELL);
Socket tempSocket = new Socket(endPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
tempSocket.Connect(endPoint);
if (tempSocket.Connected)
{
socket = tempSocket;
break;
}
}
byte[] data = Encoding.UTF8.GetBytes(text + TCPDefinitions.EOF); // Data must end with <EOF>
socket.Send(data, 0, data.Length, 0);
TCPStateObject state = new TCPStateObject {
workSocket = socket
};
socket.BeginReceive(state.buffer, 0, TCPStateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);
}
public static void ReceiveCallback(IAsyncResult ar)
{
string content = string.Empty;
TCPStateObject state = (TCPStateObject)ar.AsyncState;
Socket handler = state.workSocket;
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
state.sb.Append(Encoding.UTF8.GetString(state.buffer, 0, bytesRead));
content = state.sb.ToString();
if (content.IndexOf(TCPDefinitions.EOF) > -1)
{
string message = content.Replace(TCPDefinitions.EOF, "");
Interface.instance.UpdateShell(message);
handler.Close();
}
else
{
handler.BeginReceive(state.buffer, 0, TCPStateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);
}
}
}
public static void StartListening()
{
IPHostEntry ipHostInfo = Dns.GetHostEntry(TCPDefinitions.IP);
IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, TCPDefinitions.PORT_DEBUG);
Socket listener = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp); // Create a TCP/IP socket.
try {
listener.Bind(localEndPoint);
listener.Listen(1);
while (true)
{
Socket handler = listener.Accept();
TCPStateObject state = new TCPStateObject {
workSocket = handler
};
handler.BeginReceive(state.buffer, 0, TCPStateObject.BufferSize, 0, new AsyncCallback(ReadCallback), state);
}
} catch (Exception e) {
Console.WriteLine(e);
}
}
