determine if pocket pc 2003 device has been disconnected from the network

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I currently have an app running on a pocket pc 2003 that connects to a
webservice to update information. The device is using gprs for
interconnectivity. In one particular module, data is sent to the server and
waits on a feedback from the server. However, sometimes the gprs service is
dropped and then the device hangs waiting on a response. The update is done
in a try catch block but the device apparently gets no error indicating that
the signal has been lost.

How can I prevent the device from freezing when the signal is dropped? Is
there a timeout setting I can set within my code that I can check to see if
a response has failed to come in within that time? If so, how do I do this?
I am using vb.net 2003.

Regards


.

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