RMI headache - (too) many network interfaces

Assuming we have more then one network interface on our machine and assuming they are no routeable each other you can be faced a wierd behavior of RMI RemoteObject.

If you use TCP protocol as a transport creating an object of UnicastServerRef underneeth there is LifeRef object created, which in turn calls TCPEndpoint.getLocalEndpoint() method.

getLocalEndpoint() implementation do the following:

• creates TCPEndpoint object with null value passed as hostname
• resamples local host

return AccessController.doPrivileged(new GetPropertyAction("java.rmi.server.hostname"));

So make sure it points to the proper one ;).

VBScript for begginers

Some initial facts

• Concatenation operator: &
• No semicolon required at the end of line
• 
  

Most basic constructs

• Allocation: Dim aRoot as Root
• Assingment:  Set aParam = CurrentTSTest
• TypeOf

• If TypeOf p Is IParameterValue Then 

      TDOutput.Print("Value: " & p.Value)
  End If 

• TypeName(o) - displays type of  the object passed.

 

Loop statements

•  For Each param In lst
          With param
            TDOutput.Print("Name: " & .Name & ", Value: " & .DefaultValue)
          End With
  Next

 

• Dim i%
      For i = 1 To lst.Count
          Set instance = lst.Item(i)
          Debug.Print "Instance name: " & instance.name & " id: " & instance.ID
  Next i
   

Useful links:

• http://www.w3schools.com/vbscript/vbscript_ref_functions.asp