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POClosing WiFi connections using the Managed API
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  1. POClosing WiFi connections using the Managed API
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    copied!<p>I'm writing a program using the <a href="http://managedwifi.codeplex.com/" rel="nofollow">Managed WiFi API</a>. Here's how I get all the networks in range:</p> <pre><code> void UpdateNetworks() { networks = new List&lt;Wlan.WlanAvailableNetwork&gt;(); WlanClient client = new WlanClient(); foreach(WlanClient.WlanInterface iface in client.Interfaces) { Wlan.WlanAvailableNetwork[] nets = iface.GetAvailableNetworkList(0); foreach(Wlan.WlanAvailableNetwork net in nets) networks.Add(net); } } </code></pre> <p>The problem is that after 18 calls to this method I can no longer connect:</p> <blockquote> <p>(0x80004005): An attempt was made to establish a session to a network server, but there are already too many sessions established to that server.</p> </blockquote> <p>Here's the constructor that's throwing the exception:</p> <pre><code> public WlanClient() { Wlan.ThrowIfError( Wlan.WlanOpenHandle(Wlan.WLAN_CLIENT_VERSION_XP_SP2, IntPtr.Zero, out negotiatedVersion, out clientHandle)); try { Wlan.WlanNotificationSource prevSrc; wlanNotificationCallback = new Wlan.WlanNotificationCallbackDelegate(OnWlanNotification); Wlan.ThrowIfError( Wlan.WlanRegisterNotification(clientHandle, Wlan.WlanNotificationSource.All, false, wlanNotificationCallback, IntPtr.Zero, IntPtr.Zero, out prevSrc)); } catch { Wlan.WlanCloseHandle(clientHandle, IntPtr.Zero); throw; } } </code></pre> <p>I believe this is because the client never closes the connections it opens. How do I close them explicitly? There's handle closing in the <code>catch</code> block, but it requires access to the client's private parts.</p>
 

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