Managed Wifi API

Closed Feature: Adding WlanGetNetworkBssList [3640]

ikonst — Thu, 16 May 2013 11:23:20 GMT

Any thought to adding the call WlanGetNetworkBssList?

Thanks
Ken

Closed Issue: Unhandled Exception in OnWlanNotification [14284]

Cerilia — Thu, 16 May 2013 11:23:20 GMT

This is a Low priority issues as it only happens after my code has been running most of the day.
In the Wlan.WlanNotificationCodeAcm.ScanFail case the following line fails on occasion
int expectedSize = Marshal.SizeOf(typeof (Wlan.WlanReasonCode));
With something Like it cannot find the size of the unmanaged code. I will update with an exact error the next time it happens

New Post: How to get accesspoint IP address?

activex — Mon, 22 Apr 2013 17:06:00 GMT

activex wrote:

HI

I am using Managed Wifi API and I found this code cold give me the mac address. My question is, is it possible for me to find the IP address? And, How would I find the signal strength in DB?

WlanClient client = new WlanClient();
        // Wlan = new WlanClient();
        try
        {
            foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
            {

                Wlan.WlanBssEntry[] wlanBssEntries = wlanIface.GetNetworkBssList();

                foreach (Wlan.WlanBssEntry network in wlanBssEntries)
                {
                    int rss = network.rssi;
                    //     MessageBox.Show(rss.ToString());
                    byte[] macAddr = network.dot11Bssid;

                    string tMac = "";

                    for (int i = 0; i < macAddr.Length; i++)
                    {

                        tMac += macAddr[i].ToString("x2").PadLeft(2, '0').ToUpper();

                    }



                    Console.WriteLine("Found network with SSID {0}.", System.Text.ASCIIEncoding.ASCII.GetString(network.dot11Ssid.SSID).ToString());

                    Console.WriteLine("Signal: {0}%.", network.linkQuality);

                    Console.WriteLine("BSS Type: {0}.", network.dot11BssType);

                    Console.WriteLine("MAC: {0}.", tMac);

                    Console.WriteLine("RSSID:{0}", rss.ToString());


                }
                Console.ReadLine();
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }

found it!

New Post: How to get accesspoint IP address?

activex — Fri, 19 Apr 2013 14:23:06 GMT

HI

I am using Managed Wifi API and I found this code cold give me the mac address. My question is, is it possible for me to find the IP address? And, How would I find the signal strength in DB?

WlanClient client = new WlanClient();
        // Wlan = new WlanClient();
        try
        {
            foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
            {

                Wlan.WlanBssEntry[] wlanBssEntries = wlanIface.GetNetworkBssList();

                foreach (Wlan.WlanBssEntry network in wlanBssEntries)
                {
                    int rss = network.rssi;
                    //     MessageBox.Show(rss.ToString());
                    byte[] macAddr = network.dot11Bssid;

                    string tMac = "";

                    for (int i = 0; i < macAddr.Length; i++)
                    {

                        tMac += macAddr[i].ToString("x2").PadLeft(2, '0').ToUpper();

                    }



                    Console.WriteLine("Found network with SSID {0}.", System.Text.ASCIIEncoding.ASCII.GetString(network.dot11Ssid.SSID).ToString());

                    Console.WriteLine("Signal: {0}%.", network.linkQuality);

                    Console.WriteLine("BSS Type: {0}.", network.dot11BssType);

                    Console.WriteLine("MAC: {0}.", tMac);

                    Console.WriteLine("RSSID:{0}", rss.ToString());


                }
                Console.ReadLine();
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }

New Post: The network connection profile is corrupted

pointtx — Tue, 09 Apr 2013 11:19:55 GMT

What's interesting to me is that Microsoft does not include the hex element in their profiles that they create for connections, nor do they have it in any of their samples. So if I just use the profile that's already on the system, it may throw the error. Easy to put in a try/catch, but still...

I actually posted because I noticed that you have <authenticate> set to WPAPSK for both WPA and WPAPSK profiles. Looking at Microsoft's samples, it's hard to tell what they are using as WPA and what is WPAPSK. it looks like their WPA-Personal is shared key, and Enterprise is not? (cf http://msdn.microsoft.com/en-us/library/windows/desktop/aa369853(v=vs.85).aspx)

Anyone know how to map the dot11DefaultAuthAlgorithm enum to those samples?

Commented Issue: Unhandled Exception in OnWlanNotification [14284]

Cerilia — Wed, 13 Mar 2013 14:21:34 GMT

I've been writing an application that disables/enables the wireless adapter and afterward it checks RSSI. I've been able to trigger this exception fairly quickly. Changing the line to typeof (int) does fix the issue.

New Post: Find the MAC of current AP

ho0k3r — Mon, 04 Mar 2013 18:08:23 GMT

I found a couple ways to do it. The first one is using Managed WIFI.

'Make sure you add a reference to the ManagedWifi.dll
Imports NativeWifi
Imports System.Text
Public Class Form1
    Private Sub btnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStart.Click
        ApInfo()
    End Sub
    Private Sub ApInfo()
        'This string will contain the AP's SSID.
        Dim ApSSID As String = ""
        Dim client As New WlanClient()
        For Each wlanIface As WlanClient.WlanInterface In client.Interfaces
            Dim networks As Wlan.WlanAvailableNetwork() = wlanIface.GetAvailableNetworkList(0)
            For Each network As Wlan.WlanAvailableNetwork In networks
                'This check to see if the network is connected. If it is then it grabs the SSID.
                If network.flags = 3 Then
                    ApSSID = GetStringForSSID(network.dot11Ssid)
                    'Put the value in a textbox.
                    txtSSID.AppendText(ApSSID & vbCrLf)
                End If
            Next

            Dim wlanBssEntries As Wlan.WlanBssEntry() = wlanIface.GetNetworkBssList()
            'Now you can find the AP Mac then cross reference it to the SSID pulled earlier.
            For Each network2 As Wlan.WlanBssEntry In wlanBssEntries
                Dim macAddr As Byte() = network2.dot11Bssid
                Dim tMac As String = ""
                'If the SSID's match then output the result to a textbox.
                If GetStringForSSID(network2.dot11Ssid) = ApSSID Then
                    For i As Integer = 0 To macAddr.Length - 1
                        tMac += macAddr(i).ToString("x2").PadLeft(2, "0"c).ToUpper()
                    Next
                    txtApMAC.AppendText(tMac & vbCrLf)
                End If
            Next
        Next
    End Sub
'Used to convert the SSID to the proper format.
    Private Shared Function GetStringForSSID(ByVal ssid As Wlan.Dot11Ssid) As String
        Return Encoding.ASCII.GetString(ssid.SSID, 0, CInt(ssid.SSIDLength))
    End Function
End Class

The other way I found was using NetSH. You can grab the output of NetSH then reformat the output to get you what you want.

 Dim p = New Process()
p.StartInfo.FileName = "cmd.exe"
p.StartInfo.Arguments = ("/c netsh.exe wlan show interfaces | find " & Chr(34) & "BSSID" & Chr(34)) 'parameters.ToString()
p.StartInfo.UseShellExecute = False
p.StartInfo.CreateNoWindow = True
p.StartInfo.RedirectStandardOutput = True
p.Start()
p.WaitForExit(30000)
strCurrentAP = p.StandardOutput.ReadToEnd()
strCurrentAP = (strCurrentAP.Substring(29))

New Post: Qos and WPS

SageDruid — Sat, 02 Mar 2013 13:00:42 GMT

How can I get an information about state of Qos and WPS of network?

New Post: Find the MAC of current AP

apokkalyps — Thu, 28 Feb 2013 18:03:23 GMT

I need to do the EXACT same thing (which is a big deal because it seems like no one else in the world needs to do this).

Were you ever able to figure anything out about this? Are you still working on it/interested in a solution?

Can anyone who knows this API well, just say if it is even possible (through this api) to find the BSSID/mac of the specific layer 2 WAP that you are connected to the SSID through?

New Post: The network connection profile is corrupted

dieselmeister — Wed, 06 Feb 2013 10:59:41 GMT

You forget the <hex></hex> of the SSID in the SSID-Tag.

You must convert the SSID-name to HEX.

Then it should be working.

greetz

New Post: Find the MAC of current AP

ho0k3r — Mon, 04 Feb 2013 20:54:34 GMT

I'm trying to find the MAC of my currently connected AP. I'm working on a program that will show the current AP MAC while roaming from AP to AP.

I found this example to get the MAC of all AP's visible but I don't understand how to specify only the AP I am connected to.

http://managedwifi.codeplex.com/discussions/398107

I hope someone can help.

Using VB.NET. But C# is ok too.

thanks

New Post: How set "Connect even if the network is not broadcasting its name (SSID)" profile properties?

tvnaidu — Thu, 24 Jan 2013 21:43:23 GMT

when I click on profile properties, check-box for "Connect even if the network is not broadcasting its name (SSID)", how that check-box selects automatically with "SetProfile() and Connect() commands?.

New Post: After reboot, couldnot connect to hidden WiFi Network, why?

tvnaidu — Thu, 24 Jan 2013 17:14:11 GMT

after I reboot unit, it is not connect automatically to hidden Wifi network, any idea?

New Post: WlanConnectionNotification doesn't get fired occasionally

ataro — Wed, 16 Jan 2013 16:59:44 GMT

Obviously i wasn't thinking clearly when i was coding this. The issue is the local scope of my WlanClient client. Fixed it by making it a global var and only instantiate it once. /facepalm

New Post: WlanConnectionNotification doesn't get fired occasionally

ataro — Tue, 15 Jan 2013 23:58:00 GMT

just a quick note that i tested this by connecting/disconnecting the wifi connection many times and try to observe the notification. I notice that after the initial missed notification, i can't receive any further notification at all even if i continue to connect/disconnect the wifi connection. It's confusing because this code does work most of the time.

New Post: WlanConnectionNotification doesn't get fired occasionally

ataro — Tue, 15 Jan 2013 23:47:00 GMT

I'm really new to C# and i have found this API to be really helpful. I have the following code to listen to the wifi connect/disconnect events.

public void wlanConnectionChangeHandler(Wlan.WlanNotificationData notifyData, Wlan.WlanConnectionNotificationData connNotifyData){
            string msg = String.Empty;

            switch (notifyData.notificationSource)
            {
                case Wlan.WlanNotificationSource.ACM:

                    switch ((Wlan.WlanNotificationCodeAcm)notifyData.notificationCode)
                    {
                        case Wlan.WlanNotificationCodeAcm.ConnectionStart:
                            msg = "ConnectionStart";
                            break;

                        case Wlan.WlanNotificationCodeAcm.ConnectionComplete:
                                msg = "ConnectionComplete";
                                WlanClient client = new WlanClient();
                                foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
                                {
                                    Wlan.WlanAssociationAttributes conAttributes = wlanIface.CurrentConnection.wlanAssociationAttributes;
                                    Wlan.Dot11Ssid ssid = conAttributes.dot11Ssid;
                                    PhysicalAddress bssid = conAttributes.Dot11Bssid;
                                    int rssi = wlanIface.RSSI;

                                    msg += ". ssid: " + GetStringForSSID(ssid) + ". rssi: " + rssi.ToString() + ". MAC: " + bssid.ToString();
                                    break;
                                }

                            break;

                        case Wlan.WlanNotificationCodeAcm.Disconnecting:
                            msg = "Disconnecting";
                            break;

                        case Wlan.WlanNotificationCodeAcm.Disconnected:
                            msg = "Disconnected";
                            break;

                        default:
                            msg = "unknown notificationCode =" + notifyData.notificationCode;
                            break;

                    }
                    MessageBox.Show(msg + " for profile:" + connNotifyData.profileName);
                    break;

                default:
                    //MessageBox.Show("irrelevant notification. Ignore");
                    break;
            }
        }

        static string GetStringForSSID(Wlan.Dot11Ssid ssid)
        {
            return Encoding.ASCII.GetString( ssid.SSID, 0, (int) ssid.SSIDLength );
        }

        private void registerWlanListener()
        {
            WlanClient client = new WlanClient();

            foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
            {
                string str = "Name=" + wlanIface.InterfaceName + ". State: ";

                switch (wlanIface.InterfaceState)
                {
                    case Wlan.WlanInterfaceState.NotReady:
                        str += "NotReady";
                        break;

                    case Wlan.WlanInterfaceState.Disconnected:
                        str += "Disconnected";
                        break;

                    case Wlan.WlanInterfaceState.Disconnecting:
                        str += "Disconnecting";
                        break;

                    case Wlan.WlanInterfaceState.Connected:
                        str += "Connected";
                        break;
                }

                wlanIface.WlanConnectionNotification += wlanConnectionChangeHandler;
                MessageBox.Show(str + ". Listener registered");
            }
        }

        private void unregisterWlanListener()
        {
            WlanClient client = new WlanClient();

            foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
            {
                wlanIface.WlanConnectionNotification -= wlanConnectionChangeHandler;
                MessageBox.Show(wlanIface.InterfaceName + ". Listener unregistered");
            }
        }

At the start, i call registerWlanListener, and before stopping my app, i call unregisterWlanListener(). I've tested my desktop app on win7 as well as win8 tablet, and have the following issues on both:

1. Most of the time, my wlanConnectionChangeHandler gets called on the wifi connect/disconnect and everything works fine. However, on some occasion, it doesn't get called at all. What can lead to this?

2. On separate occasions, even though I've removed the event handler, i've still received notifications. Am I missing something in removing these event handler?

Thank you.

Project License Changed

Thu, 03 Jan 2013 14:06:46 GMT

Copyright (c) 2013 Ilya Konstantinov Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Reviewed: 1.1 (Dec 04, 2012)

AlexBel — Tue, 04 Dec 2012 16:23:55 GMT

Rated 5 Stars (out of 5) - This is great peace of code, the best option for me !

New Post: The network connection profile is corrupted

brianthesmith — Thu, 29 Nov 2012 15:45:29 GMT

I have been running into this same issue. No matter what I do, I always get the corrupted profile error. I have been swallowing this exception and using the event handler (wlanIface_WlanConnectionNotification) to report success and failure based on the Wlan.WlanNotificationCodeAcm objects that come back.

Even if the Corrupt profile exception occurs I am still seeing a successful connection.

However when i give the Connect method a bad passPhrase my application seems to crash unexpectedly even if I swallow all System.Exceptions. Not quite sure why.

New Post: The network connection profile is corrupted

bishwash — Mon, 26 Nov 2012 21:51:43 GMT

Whenever I am trying to connect to a network with WPA2PSK security with TKIP/AES Encryption I am getting "The network connection profile is corrupted". Below is the profilexml I am using.

profileXml = string.Format("<?xml version=\"1.0\" ?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>{0}</name><SSIDConfig><SSID><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><autoSwitch>false</autoSwitch><MSM><security><authEncryption><authentication>WPA2PSK</authentication><encryption>TKIP</encryption><useOneX>false</useOneX></authEncryption><sharedKey><keyType>passPhrase</keyType><protected>true</protected><keyMaterial>{1}</keyMaterial></sharedKey></security></MSM></WLANProfile>", profileName, key);

Can any one please suggest what am I doing wrong. Below is the complete function.

public void Wifi_SetProfile(string profileargs, string keyargs)
        {
            // Connects to a known network with WEP security
            string profileName = profileargs; // this is also the SSID
            string key = keyargs;

            WlanClient client = new WlanClient();
            foreach (WlanClient.WlanInterface wlanIface in client.Interfaces)
            {
                // Connects to a known network with WEP security
				string profileXml = string.Empty;
				Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList(0);
				foreach (Wlan.WlanAvailableNetwork network in networks)
				{
					if (profileargs == GetStringForSSID(network.dot11Ssid))
					{
						string name = GetStringForSSID(network.dot11Ssid); // this is typically the network's SSID

						if (network.dot11DefaultAuthAlgorithm == Wlan.Dot11AuthAlgorithm.IEEE80211_Open)
						{
							profileXml = string.Format("<?xml version=\"1.0\"?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>{0}</name><SSIDConfig><SSID><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><MSM><security><authEncryption><authentication>open</authentication><encryption>None</encryption><useOneX>false</useOneX></authEncryption></security></MSM></WLANProfile>", profileName, key);
							break;
						}
						if (network.dot11DefaultAuthAlgorithm == Wlan.Dot11AuthAlgorithm.RSNA_PSK)
						{
							//doesnot used shared key on this profile xml which will prompt user to add the key to connect
							profileXml = string.Format("<?xml version=\"1.0\" ?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>{0}</name><SSIDConfig><SSID><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><autoSwitch>false</autoSwitch><MSM><security><authEncryption><authentication>WPA2PSK</authentication><encryption>TKIP</encryption><useOneX>false</useOneX></authEncryption><sharedKey><keyType>passPhrase</keyType><protected>true</protected><keyMaterial>{1}</keyMaterial></sharedKey></security></MSM></WLANProfile>", profileName, key);
							break;
						}
						if (network.dot11DefaultAuthAlgorithm == Wlan.Dot11AuthAlgorithm.WPA)
						{
							profileXml = string.Format("<?xml version=\"1.0\"?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>{0}</name><SSIDConfig><SSID><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><autoSwitch>false</autoSwitch><MSM><security><authEncryption><authentication>WPAPSK</authentication><encryption>TKIP</encryption><useOneX>false</useOneX></authEncryption><sharedKey><keyType>passPhrase</keyType><protected>true</protected><keyMaterial>{1}</keyMaterial></sharedKey></security></MSM></WLANProfile>", profileName, key);
							break;
						}
						if (network.dot11DefaultAuthAlgorithm == Wlan.Dot11AuthAlgorithm.WPA_PSK)
						{
							profileXml = string.Format("<?xml version=\"1.0\" ?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>{0}</name><SSIDConfig><SSID><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><autoSwitch>false</autoSwitch><MSM><security><authEncryption><authentication>WPAPSK</authentication><encryption>TKIP</encryption><useOneX>false</useOneX></authEncryption><sharedKey><keyType>passPhrase</keyType><protected>true</protected><keyMaterial>{1}</keyMaterial></sharedKey></security></MSM></WLANProfile>", profileName, key);
							break;
						}

					}
				}

				//makes sure you do not replace the saved profile
				foreach (Wlan.WlanProfileInfo profileInfo in wlanIface.GetProfiles())
				{
					string profilename = profileInfo.profileName;
					if (profileargs == profilename)
					{
						try
						{
							profileXml = wlanIface.GetProfileXml(profileInfo.profileName);
							wlanIface.SetProfile(Wlan.WlanProfileFlags.AllUser, profileXml, false);
							wlanIface.Connect(Wlan.WlanConnectionMode.Profile, Wlan.Dot11BssType.Any, profileName);

							//Send Message to Update View
							NetworkParameters param = new NetworkParameters();
							param.isConnected = true;
							param.connectionString = profileInfo.profileName;
							var genericmessage = new GenericMessage<NetworkParameters>(this, param);
							Messenger.Default.Send(genericmessage);
							btnCancel.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
							return;
						}
						catch (Exception ex)
						{
							MessageBox.Show(ex.Message);
						}
					}
				}

				try
				{
					wlanIface.SetProfile(Wlan.WlanProfileFlags.AllUser, profileXml, true);
					wlanIface.Connect(Wlan.WlanConnectionMode.Profile, Wlan.Dot11BssType.Any, profileName);
					//Send Message to Update View
					NetworkParameters param = new NetworkParameters();
					param.isConnected = true;
					param.connectionString = profileargs;
					var genericmessage = new GenericMessage<NetworkParameters>(this, param);
					Messenger.Default.Send(genericmessage);
					btnCancel.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
				}
				catch (Exception ex)
				{
					MessageBox.Show(ex.Message);
				}
               
            }
        }
        
	}