public void Form1_Load(object sender, EventArgs e)
{
    try
    {
        // Connect to Firebase database
        client = new FireSharp.FirebaseClient(fcon);
    }
    catch
    {
        MessageBox.Show("there was problem in the internet.");
    }

    // Generate random session name
    GenerateRandomNames names = new GenerateRandomNames();
    Random rand = new Random();
    randomName = names.GenerateRandomName(rand);

    // Obtain player's public IP address
    PublicIPAddress IpAddressPlayer = new PublicIPAddress();
    IpPlayer = IpAddressPlayer.GetPublicIPAddress();

    // Register player in database
    PlayAcON();
}

IFirebaseConfig fcon = new FirebaseConfig()
{
    AuthSecret = "", // Firebase authentication token
    BasePath = ""    // Firebase database URL
};

IFirebaseClient client = new FireSharp.FirebaseClient(fcon);

// Register player session
private void PlayAcON()
{
    Player ply = new Player()
    {
        IP = IpPlayer,
    };
    
    // Add player to database with random session name
    var setter = client.Set("PlayerIpList/" + randomName, ply);
}

// Clean up on exit
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
    // Remove player from active sessions
    var result = client.Delete("PlayerIpList/" + randomName);
}

public string GetPublicIPAddress()
{
    try
    {
        using (var client = new WebClient())
        {
            string publicIP = client.DownloadString("http://ipinfo.io/ip").Trim();
            return publicIP;
        }
    }
    catch (Exception ex)
    {
        return "No se pudo obtener la dirección IP pública: " + ex.Message;
    }
}