Android Question Jrcd2 Library - Cliente side. How do I know if ther server is down?

[Q Candiani]

Hello everybody,

I'm using a jrdc2 library. On the client side, I want to know if the server is down or not, before starting to work with it, to raise an alternative off-line workspace if it's necessary.

This subroutine does not return any message or error when the server is down.

Sub CreateRequest As DBRequestManager
   Dim req As DBRequestManager
   req.Initialize(Me, rdcLink)
   Return req
End Sub

Thanks

 

[Erel]

The relevant sub is:

Sub GetRecord (id As Int)
   Dim req As DBRequestManager = CreateRequest
   Dim cmd As DBCommand = CreateCommand("select_animal", Array(id))
   Wait For (req.ExecuteQuery(cmd, 0, Null)) JobDone(j As HttpJob)
   If j.Success Then
       req.HandleJobAsync(j, "req")
       Wait For (req) req_Result(res As DBResult)
       'work with result
       req.PrintTable(res)
   Else
       Log("ERROR: " & j.ErrorMessage) '<---------------------------------------------
   End If
   j.Release
End Sub