Hi, when I try to query for MaxConnections with GetSockOpt I am seeing an
exception and cannot figure out what is going on.  Here is a quick and dirty
test program and the output, hopefully you can
point me in the right direction:
---- Code -----

     {
        Socket s = new Socket (AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.IP);
        IPEndPoint ip = new IPEndPoint (IPAddress.Any, 9876);
        try
        {
           outputText.AppendText ("Attempt1:");
           outputText.AppendText (Environment.NewLine);
           s.GetSocketOption (SocketOptionLevel.Socket,
SocketOptionName.MaxConnections);
        }  
        catch (SocketException se1)
        {
           outputText.AppendText (se1.ToString ());
        }
        try
        {
           outputText.AppendText (Environment.NewLine);
           outputText.AppendText (Environment.NewLine);
           outputText.AppendText ("Attempt2:");
           outputText.AppendText (Environment.NewLine);
           s.GetSocketOption (SocketOptionLevel.IP,
SocketOptionName.MaxConnections);
        }  
        catch (SocketException se2)
        {
           outputText.AppendText (se2.ToString ());
        }
        try
        {
           outputText.AppendText (Environment.NewLine);
           outputText.AppendText (Environment.NewLine);
           outputText.AppendText ("Attempt3:");
           outputText.AppendText (Environment.NewLine);
           s.GetSocketOption (SocketOptionLevel.Tcp,
SocketOptionName.MaxConnections);
        }  
        catch (SocketException se3)
        {
           outputText.AppendText (se3.ToString ());
        }

----- Ouput -----
Attempt1:
System.Net.Sockets.SocketException: An unknown, invalid, or unsupported
option or level was specified in a getsockopt or setsockopt call
  at System.Net.Sockets.Socket.GetSocketOption(SocketOptionLevel
optionLevel, SocketOptionName optionName)
  at simplesocket.Form1.button1_Click(Object sender, EventArgs e) in
d:\teststuff\simplesocket\simplesocket\form1.cs:line 112

Attempt2:
System.Net.Sockets.SocketException: An unknown, invalid, or unsupported
option or level was specified in a getsockopt or setsockopt call
  at System.Net.Sockets.Socket.GetSocketOption(SocketOptionLevel
optionLevel, SocketOptionName optionName)
  at simplesocket.Form1.button1_Click(Object sender, EventArgs e) in
d:\teststuff\simplesocket\simplesocket\form1.cs:line 124

Attempt3:
System.Net.Sockets.SocketException: An invalid argument was supplied
  at System.Net.Sockets.Socket.GetSocketOption(SocketOptionLevel
optionLevel, SocketOptionName optionName)
  at simplesocket.Form1.button1_Click(Object sender, EventArgs e) in
d:\teststuff\simplesocket\simplesocket\form1.cs:line 136