Port 25!!!!?????

[students552 university]

Hi all I want to know as to how to write a program in C# to recieve characters from the internet port(like port 25)and store it in a file. Can someone help me with the code or any help for such a programe?????????????!!!!!!!!!!! Thanks. :)

[mav northwind]

Hi! A small example, written from memory, for you to start with:

System.Net.Sockets.TcpListener listener = new System.Net.Sockets.TcpListener(25);
listener.Start();
do
{
if (listener.Pending())
{
System.Net.Sockets.TcpClient client = listener.AcceptTcpClient();

	byte\[\] buf = new byte\[client.ReceiveBufferSize\];
	int len = client.GetStream().Read(buf, 0, buf.Length);
	// TODO: Handle longer data and writing to file
	MessageBox.Show(len+" bytes received");
} 
else
{
	System.Threading.Thread.Sleep(100);
}

} while (true);

Regards, mav P.S.: "'Multiple exclamation marks,' he went on, shaking his head, 'are a sure sign of a diseased mind.'" (Terry Pratchett in "Eric"). ;P