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09.18.2008 at 08:44AM PDT, ID: 23742763
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7.0

Winsock - need to detect when VPN connection is dropped

Asked by JonMny in WInsock, C++ Programming Language, Virtual Private Networking (VPN)

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I have a winsock application that accepts connections from remote clients. The application checks for connectivity by writing a small packet to the client if the write fails the client is removed from the connected list.
The problem is if the VPN connection is dropped the Server does not receive a noticifaction that the client has disconnected. Even the small packet write test suceeds.  Over time the write test does fail however, depending on the VPN it can take a few minutes to hours before the call fails.

Is there a low level call or another way to determine if the client is still connected?Start Free Trial
[+][-]09.18.2008 at 10:56AM PDT, ID: 22513528

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[+][-]09.18.2008 at 11:39AM PDT, ID: 22513979

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[+][-]09.18.2008 at 01:34PM PDT, ID: 22515155

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[+][-]09.18.2008 at 07:33PM PDT, ID: 22517436

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[+][-]09.19.2008 at 01:00AM PDT, ID: 22518798

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[+][-]09.19.2008 at 12:30PM PDT, ID: 22524609

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[+][-]09.20.2008 at 03:01AM PDT, ID: 22529022

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[+][-]09.23.2008 at 07:45AM PDT, ID: 22549966

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About this solution

Zones: WInsock, C++ Programming Language, Virtual Private Networking (VPN)
Tags: c++
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Solution Provided By: JonMny
Participating Experts: 1
Solution Grade: A
 
 
 
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