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I have a VPN connection that I keep losing, that I need to connect to our DB server, but every second or third connection fails because I have lost the VPN connection. I'd like to add somde code - for DEBUG config only - to check the VPN connection and reconnect if necessary, before proceeding to attempt the database connection.

ProfK
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  • This doesn't answer your question but I wanted to offer another idea. If you are getting disconnected due to inactivity then open a CMD.exe window and run "ping -t " and just leave that window open which you develop. – Matt Cofer Aug 16 '11 at 13:44

1 Answers1

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You could use System.Net.NetworkInformation.Ping to check if the connection is up - then rasdial to reconnect the vpn if the connection is lost.

eg

System.Diagnostics.Process.Start("rasdial.exe", "VPNName Username Password");

You can also disconnect the VPN using

System.Diagnostics.Process.Start("rasdial.exe", "VPNName /d");

Update

Calling rasdial with no arguments returns a list of open connections - might be a more robust solution for you.

PaulB
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  • Great stuff for rasdial, but now what do I ping to see if the network is up? I can ping any server on the VPN, but if that server is down, it will appear to my AutoVpn code that I have lost the VPN connection. – ProfK Aug 16 '11 at 16:54
  • I think that will do @Paul, as that is the server I keep missing. Thanks. – ProfK Aug 17 '11 at 07:09