Why this socket code doesnt work?

Code:

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TcpClient client = new TcpClient();
client.Connect("127.0.0.1", 21);
client.GetStream().BeginRead(buffer, 0, buffer.Length, new AsyncCallback(ReadCallBack), null);

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Code:

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static void ReadCallBack(IAsyncResult callback) {
int res = stream.EndRead(callback);
if (res == 0) {
return;
}

string str = Encoding.Default.GetString(buffer);
Console.WriteLine(str);

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I don't understand why it doesnt work. It should connect to my ftp(and it does as i can see it in my ftp server) and receive a "Bullet ftp serv" message but it doesn't!
The problem seems to be that the ReadCallBack method doesnt even get fired..but why?!

static void ReadCallBack(IAsyncResult callback)


You didn't supply an argument to that function...

VB Code:

client.GetStream().BeginRead(buffer, 0, buffer.Length, new AsyncCallback(ReadCallBack([b]something_here[/b])), null);

Phreak

No. Its a function pointer, its the BeginRead() function's work to fill it with the needed parameter not to me.

The problem shouldn't be there (as i am not even allowed to put an arg there)

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