Issue moved from dotnet/maui#6649
From @MartinRothschink on Friday, April 29, 2022 7:05:05 AM
Description
All tests have been done on a Xaomi Pad 5 (physical device, Android 11).
If target sdk is set to < 30, the values returned by NetworkInterface.GetAllNetworkInterfaces() seem valid:
If target sdk is set to 31, the values returned by NetworkInterface.GetAllNetworkInterfaces() are outside of the enum ranges and name/description are empty. This screen shot shows the situation if IPv6 is not enabled in the router:
If IPv6 is enabled in the router, NetworkInterfaceType and OperationalStatus values are even worse.
Steps to Reproduce
- Create a new Maui app (VS 2022 17.2 Preview 5)
- Replace MainPage with the files below
MainPage.xaml.cs
namespace MauiApp1;
using System.Net.NetworkInformation;
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
LoadNics();
BindingContext = this;
}
public Nic[] Nics { get; set; }
private void LoadNics()
{
var nics = new List<Nic>();
var ifs = NetworkInterface.GetAllNetworkInterfaces();
foreach (var i in ifs)
{
var n = new Nic
{
Name = i.Name,
Description = i.Description,
Status = i.OperationalStatus,
Type = i.NetworkInterfaceType
};
if (i.Supports(NetworkInterfaceComponent.IPv4))
n.Supports += "IPv4 ";
if (i.Supports(NetworkInterfaceComponent.IPv6))
n.Supports += "IPv6 ";
foreach (var a in i.GetIPProperties().UnicastAddresses)
{
if (a.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
n.IPv6Addresses += a.Address.ToString() + " ";
if (a.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
n.IPv4Addresses += a.Address.ToString() + " ";
}
nics.Add(n);
}
Nics = nics.ToArray();
}
}
public class Nic
{
public string Name { get; set; }
public string Description { get; set; }
public OperationalStatus Status { get; set; }
public NetworkInterfaceType Type { get; set; }
public string Supports { get; set;}
public string IPv4Addresses { get; set; }
public string IPv6Addresses { get; set; }
}
MainPage.xaml
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="MauiApp1.MainPage">
<ListView ItemsSource="{Binding Nics, Mode=OneWay}" SelectionMode="None" RowHeight="{OnPlatform Android=140}">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid ColumnSpacing="8">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Label Grid.Column="0" Grid.Row="0" Text="Name" FontAttributes="Bold" FontSize="Subtitle"/>
<Label Grid.Column="1" Grid.Row="0" Grid.ColumnSpan="2" Text="{Binding Name}" FontSize="Subtitle"/>
<Label Grid.Column="1" Grid.Row="1" Text="Description" />
<Label Grid.Column="2" Grid.Row="1" Text="{Binding Description}" />
<Label Grid.Column="1" Grid.Row="2" Text="Status" />
<Label Grid.Column="2" Grid.Row="2" Text="{Binding Status}" />
<Label Grid.Column="1" Grid.Row="3" Text="Type" />
<Label Grid.Column="2" Grid.Row="3" Text="{Binding Type}" />
<Label Grid.Column="1" Grid.Row="4" Text="Supports" />
<Label Grid.Column="2" Grid.Row="4" Text="{Binding Supports}" />
<Label Grid.Column="1" Grid.Row="5" Text="IPv4Addresses" />
<Label Grid.Column="2" Grid.Row="5" Text="{Binding IPv4Addresses}" />
<Label Grid.Column="1" Grid.Row="6" Text="IPv6Addresses" />
<Label Grid.Column="2" Grid.Row="6" Text="{Binding IPv6Addresses}" />
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ContentPage>
Version with bug
Release Candidate 2 (current)
Last version that worked well
Unknown/Other
Affected platforms
Android
Affected platform versions
Android 10/11 (target sdk >= 30)
Did you find any workaround?
Currently I have to ignore the values for OperationalStatus and use the interface with valid UnicastAddresses.
Relevant log output
No response
Issue moved from dotnet/maui#6649
From @MartinRothschink on Friday, April 29, 2022 7:05:05 AM
Description
All tests have been done on a Xaomi Pad 5 (physical device, Android 11).
If target sdk is set to < 30, the values returned by NetworkInterface.GetAllNetworkInterfaces() seem valid:
If target sdk is set to 31, the values returned by NetworkInterface.GetAllNetworkInterfaces() are outside of the enum ranges and name/description are empty. This screen shot shows the situation if IPv6 is not enabled in the router:
If IPv6 is enabled in the router, NetworkInterfaceType and OperationalStatus values are even worse.
Steps to Reproduce
MainPage.xaml.cs
MainPage.xaml
Version with bug
Release Candidate 2 (current)
Last version that worked well
Unknown/Other
Affected platforms
Android
Affected platform versions
Android 10/11 (target sdk >= 30)
Did you find any workaround?
Currently I have to ignore the values for OperationalStatus and use the interface with valid UnicastAddresses.
Relevant log output
No response