I'm trying to write a program that will look for a valid listener on a certain port for multiple systems. This is an internal application that we will use to look for installed software on these systems. For example, if I "ping" port 1414 on a system, and get a connection, it's a pretty safe guess that MQSeries is installed there. I assume I want to use Socket programming, but was wondering if there is a good example out there of what I need to do, or whether it's already been written?