Echelon OpenLDV - Manual (Page 7)

OpenLDV Programmer’s Guide vii
Implement the ILdvxLookup Interface .............................................. 119
Add the Extension to the Component Category ................................ 121
Build and Register the COM Server .................................................. 121
Create a Custom xDriver Profile ........................................................ 122
Test the Lookup Extension ................................................................. 124
Optional Steps ..................................................................................... 124
Creating a Custom Lookup Extension in Visual Basic ............................ 125
Create a New Visual Studio Project ................................................... 125
Add a Reference to the xDriver Type Library ................................... 127
Add a COM Class ................................................................................. 127
Delete the Project Default Class ......................................................... 128
Import xDriver Types to Your System Namespace ........................... 129
Implement the ILdvxLookup Interface .............................................. 129
Build and Register the Lookup Extension ......................................... 130
Create a Custom xDriver Profile ........................................................ 130
Test the Lookup Extension ................................................................. 132
Sample Lookup Extension Component ..................................................... 132
xDriver Profiles .......................................................................................... 134
Starting the Connection Broker ......................................................... 135
Chapter 7. LNS Programming with xDriver .......................................... 137
Downlink Sample Applications ................................................................. 138
Opening a Single Remote Network With xDriver ............................. 138
Opening Multiple Remote Networks for Downlink ........................... 139
Uplink Sample Application ....................................................................... 142
Appendix A. Custom Network Interfaces................................................ 147
Overview ..................................................................................................... 148
Working with a Custom Network Interface ............................................. 148
Windows Registry Entries ......................................................................... 150
Appendix B. LNS Methods and Events for xDriver Support ............. 153
xDriver Methods and Events ..................................................................... 154
AcceptIncomingSession ....................................................................... 154
BeginIncomingSessionEvents ............................................................. 155
EndIncomingSessionEvents................................................................ 155
NetworkInterfaces.Item( ) ................................................................... 156
OnIncomingSessionEvent ................................................................... 157
ReleasePendingUpdates ...................................................................... 158
Appendix C. Custom Lookup Extension Programming ...................... 161
Overview ..................................................................................................... 162
ILdvxConfigure Interface .......................................................................... 162
SetInstance Method ............................................................................. 162
SetOptions Method .............................................................................. 163
ILdvxLookup Interface .............................................................................. 164
DownlinkLookup Method .................................................................... 164
UpdateLookup Method ........................................................................ 165
UplinkLookup Method ........................................................................ 165
ILdvxSCO Interface ................................................................................... 166
GetAdditionalDownlinkPacketHeader Method ................................. 167
GetAdditionalDownlinkPacketTrailer Method ................................. 167
GetAuthenticationFlag Method .......................................................... 168
GetCurrentAuthenticationKey Method ............................................. 168
GetDownlinkKey Method .................................................................... 169