The following code in .Net using CacheObject.dll version 2016.1.2.206 com library
ConnectionString = "cn_iptcp:10.56.135.160[1972]:PHDEMO:PHSYSADM:***********"
b = factory.Connect(ConnectionString )
objCacheObject = factory.Static("CacheObjectConnection")
clist = factory.GetConnectionList()
for the above code, b is true and clist is Local,cn_iptcp:127.0.0.1[1972]: