LastError is the last socket error code and is used to provide the developer with flexibility when dealing with specific socket errors. This is set with the
CreateError constructor.
The values for this property are usually listed in Winsock references such as:
- http://www.ibiblio.org/winsock/winsock-1.1/winsock.html
- http://www.sockets.com/
- Microsoft Windows Sockets 2 Reference