I am trying to run the simple TCP send / receive example on Pages 973 - 975 of Professional C# 2nd edition
Both programs build OK but when I run the send program I get the following message

"No connection could be made because the target machine actively refused it".

I have selected localhost as the target on Port 2112. Norton Antivirus is autoscanning is disabled. I am using Visual C# 2005 Express Edition recently downloaded from MSDN.

Any suggestions