mscorlib-4.0-offline-doxygenated-documentation/html/_socket_option_level_8cs_source.html

 namespace System.Net.Sockets
 {
     public enum SocketOptionLevel
     {
         Socket = 0xFFFF,
         IP = 0,
         IPv6 = 41,
         Tcp = 6,
         Udp = 17
     }
 }
System.Net.Sockets.ProtocolType.IP
Internet Protocol.

System.Net.Sockets.Socket
Implements the Berkeley sockets interface.
Definition: Socket.cs:16

System.Net.TransportType.Udp
UDP transport.

System.Net.Sockets.SocketOptionLevel
SocketOptionLevel
Defines socket option levels for the M:System.Net.Sockets.Socket.SetSocketOption(System....
Definition: SocketOptionLevel.cs:4

System.Net.TransportType.Tcp
TCP transport.

System.UriHostNameType.IPv6
The host name is an Internet Protocol (IP) version 6 host address.

System.Net.Sockets
Definition: AcceptAsyncResult.cs:1