We have developed access control system where central controller is collecting data fro readers and communicates to server as & when data arrives at reader.
To communicate data to server we are using Digi Connect ME modules to transmit data over TCP/IP network.
Server application is developed in Visual Basic & We are using Winsock control to listen /connect with Digi Connect ME modules.
It works fine if Digi Connect ME is ON and network is OK,
:: Problem ::
If due to power failure Digi connect ME resets, existing connection with server application gets closed & server is not notified in any way this connection is lost
And server is not able to receive data on already open port, unless server application is closed & opened again to re-establish connection.
As server is ideally not monitored everday & should recover from such errors automatically I would like you to suggest any remedy we can use in our application…
- either we get notification once digi connect ME restarts
- server can know status of modules if they are connect & working OK
- any other suitable methid that can help to recover.
LOOKING FORWARD TO YOUR REPLY
- Mohan, Bangalore-India