INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Windows Mobile 6.1 VPN Connection dropping

Windows Mobile 6.1 VPN Connection dropping

(OP)
I am having an issue maintaining a VPN connection on a CN50 using Windows Mobile 6.1. I am trying to communicate with a listener through the handheld by using a GPRS connection to connect to the VPN that the listener is on. When doing this only a few messages get to the listener, before messages stop getting through. This functionality has been tested thoroughly using wifi and works as expected.

Question:
It would help me if anyone has any advice or can tell how to: Programmatically disconnect cellular and VPN not just request it and a better way to check the connection status of VPN and cellular.

Details:
The reason I suspect the VPN is the problem is because if the listener stops receiving requests, I can manually tell the device to connect to the VPN and cellular. When I do this, the cellular displays nothing (treats it like it is already connected), but when I tell it to connect to the VPN to connect a message that says it is attempting to connect and the messages begin transferring again. In order to reconnect to the cellular and VPN programmatically I am using opennetcf. This approach works for a while, but eventually records will stop transferring or I will start receiving the message that the VPN cannot connect. At this point I can manually disconnect and re connect successfully to get a few more records.

I have not had any success with finding a way to programmatically disconnect from cellular and VPN. Everything I have found indicates the most I can do is request the operating system to disconnect them. When I attempt to request a disconnect then connect, the device is unable to connect for any length of time.

I have also not had any luck with determining the status of the cellular or VPN connections in code. The connection manager has a status, but it is unreliable. It frequently says disconnected, when everything is working fine, and says connected when it is not. I have also looked into the information available by using OpenNETCF.Net.NetworkInformation.NetworkInterface.GetAllNetoworkInterfaces. This shows the types of connections that I am attempting to use such as VPN, cellular, Ethernet. The status for cellular and VPN are always unreachable with an operational status of up.
I am programming in VB.NET, the device is set to never sleep or shutdown.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close