Meadow.Samples/Source/Meadow F7/Network/Ethernet_Basics/MeadowApp.cs at main · WildernessLabs/Meadow.Samples · GitHub

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using Meadow;
using Meadow.Devices;
using Meadow.Hardware;
using System;
using System.Net.Http;
using System.Net.NetworkInformation;
using System.Threading.Tasks;

namespace Ethernet_Basics;

public class MeadowApp : App<F7CoreComputeV2>
{
    public override async Task Run()
    {
        Resolver.Log.Info("Run...");

        var ethernet = Device.NetworkAdapters.Primary<IWiredNetworkAdapter>();

        if (ethernet == null)
        {
            Resolver.Log.Error("Wired network adapters not found");
        }
        else
        {
            ethernet.NetworkConnected += EthernetAdapterConnected;
            ethernet.NetworkDisconnected += EthernetAdapterDisconnected;

            if (ethernet.IsConnected)
            {
                DisplayNetworkInformation();

                while (true)
                {
                    try
                    {
                        await GetWebPageViaHttpClient("https://postman-echo.com/get?foo1=bar1&foo2=bar2");
                    }
                    catch (Exception ex)
                    {
                        Resolver.Log.Error($"{ex.Message}");
                        await Task.Delay(3000);
                    }
                }
            }
        }
    }

    private void EthernetAdapterDisconnected(INetworkAdapter sender, NetworkDisconnectionEventArgs args)
    {
        Resolver.Log.Info("Network cable disconnected");
    }

    private void EthernetAdapterConnected(INetworkAdapter networkAdapter, NetworkConnectionEventArgs e)
    {
        Resolver.Log.Info("Network cable connected");
    }

    public void DisplayNetworkInformation()
    {
        NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();

        if (adapters.Length == 0)
        {
            Resolver.Log.Warn("No adapters available");
        }
        else
        {
            foreach (NetworkInterface adapter in adapters)
            {
                IPInterfaceProperties properties = adapter.GetIPProperties();
                Resolver.Log.Info("");
                Resolver.Log.Info(adapter.Description);
                Resolver.Log.Info(string.Empty.PadLeft(adapter.Description.Length, '='));
                Resolver.Log.Info($"  Adapter name: {adapter.Name}");
                Resolver.Log.Info($"  Interface type .......................... : {adapter.NetworkInterfaceType}");
                Resolver.Log.Info($"  Physical Address ........................ : {adapter.GetPhysicalAddress()}");
                Resolver.Log.Info($"  Operational status ...................... : {adapter.OperationalStatus}");

                string versions = string.Empty;

                if (adapter.Supports(NetworkInterfaceComponent.IPv4))
                {
                    versions = "IPv4";
                }

                if (adapter.Supports(NetworkInterfaceComponent.IPv6))
                {
                    if (versions.Length > 0)
                    {
                        versions += " ";
                    }
                    versions += "IPv6";
                }

                Resolver.Log.Info($"  IP version .............................. : {versions}");

                if (adapter.Supports(NetworkInterfaceComponent.IPv4))
                {
                    IPv4InterfaceProperties ipv4 = properties.GetIPv4Properties();
                    Resolver.Log.Info($"  MTU ..................................... : {ipv4.Mtu}");
                }

                if ((adapter.NetworkInterfaceType == NetworkInterfaceType.Wireless80211) || (adapter.NetworkInterfaceType == NetworkInterfaceType.Ethernet))
                {
                    foreach (UnicastIPAddressInformation ip in adapter.GetIPProperties().UnicastAddresses)
                    {
                        if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                        {
                            Resolver.Log.Info($"  IP address .............................. : {ip.Address}");
                            Resolver.Log.Info($"  Subnet mask ............................. : {ip.IPv4Mask}");
                        }
                    }
                }
            }
        }
    }

    public async Task GetWebPageViaHttpClient(string uri)
    {
        Resolver.Log.Info($"Requesting {uri} - {DateTime.Now}");

        using (HttpClient client = new HttpClient())
        {
            client.Timeout = new TimeSpan(0, 5, 0);

            HttpResponseMessage response = await client.GetAsync(uri);

            try
            {
                response.EnsureSuccessStatusCode();
                string responseBody = await response.Content.ReadAsStringAsync();
                Resolver.Log.Info(responseBody);
            }
            catch (TaskCanceledException)
            {
                Resolver.Log.Info("Request time out.");
            }
            catch (Exception e)
            {
                Resolver.Log.Info($"Request went sideways: {e.Message}");
            }
        }
    }
}