Echelon OpenLDV - Manual (Page 180)

172 Custom Lookup Extension Component Programming
GetUplinkKey Method
Applies to: Session Control Object
This method obtains the xDriver uplink lookup key. This key comes from the
RNI identifier that is passed to xDriver during an uplink session, and is filled
into the SCO automatically. It is the responsibility of the lookup extension
component to map this key to the authentication and LNS network parameters to
be used by the rest of the xDriver framework, and fill them into the SCO from the
UplinkLookup function.
For more information on the UplinkLookup function, see UplinkLookup on page
165.
Syntax
C++ STDMETHOD(GetUplinkKey)(BSTR * upKey)
Visual Basic Function GetUplinkKey() As String
Table 58. GetUplinkKey Parameters
Parameter Description
upKey Variable (String) that stores the return value.
Returns
The uplink lookup key of the RNI as a string.
SetAdditionalDownlinkPacketHeader Method
Applies to: Session Control Object
This method sets any additional bytes to pre-pend to the packet header sent
during a downlink session. Normally this field is an empty string (the default).
However, it can be used to specify a series of bytes that are pre-pended to every
packet used in a downlink session if there is an intermediate proxy between the
OpenLDV application and the RNI. These bytes can be used to provide routing
information the proxy might require.
Syntax
C++ STDMETHOD(SetAdditionalDownlinkPacketHeader)(BSTR hexBytes)
Visual Basic Sub SetAdditionalDownlinkPacketHeader(ByVal hexBytes As String)