private void Hub_EncryptionKey(string symmetricKey)
{
Task.Factory.StartNew(() =>
{
if (!String.IsNullOrEmpty(symmetricKey))
{
string keyAES = _RSA.DecryptStringURL(symmetricKey);
_AES = new SymmetricEncryptionAES(keyAES);
lblCryptage.Text = keyAES;
}
else
{
_AES = null;
lblCryptage.Text = null;
}
}, CancellationToken.None, TaskCreationOptions.None, _scheduler);
}
private async void btCnx_Click(object sender, EventArgs e)
{
gbxConnection.Enabled = false;
btCnx.Enabled = false;
if (btCnx.Text == "Connecter")
{
try
{
var ks = AsymmetricEncryptionRSA.GenerateKeys();
_RSA = new AsymmetricEncryptionRSA(ks.privateKey, ks.publicKey);
HubConnectionBuilder builder = new HubConnectionBuilder();
builder.WithUrl($"{txtAdresse.Text}/chat?pseudo={txtPseudo.Text}&language={cbxLanguage.Text}&publicKey={ks.publicKey.EncodeURL()}");
_connection = builder.Build();
_connection.On <string, string>("BroadcastMessage", Hub_BroadcastMessage);
_connection.On <string, string>("SendMessage", Hub_SendMessage);
_connection.On <IList <string> >("UsersList", Hub_UsersList);
_connection.On <string>("EncryptionKey", Hub_EncryptionKey);
_connection.Closed += (error) =>
{
Task.Factory.StartNew(() =>
{
gbxConnection.Enabled = true;
btCnx.Text = "Connecter";
btCnx.Enabled = true;
gbxChat.Enabled = false;
gbxUsers.Enabled = false;
lbxUsers.Items.Clear();
gbxReception.Enabled = false;
lblCryptage.Text = null;
_RSA = null;
_AES = null;
}, CancellationToken.None, TaskCreationOptions.None, _scheduler);
return(Task.CompletedTask);
};
await _connection.StartAsync();
btCnx.Text = "Déconnecter";
gbxChat.Enabled = true;
btSend.Enabled = false;
gbxUsers.Enabled = true;
gbxReception.Enabled = true;
Settings.Default.AdresseHubWebService = txtAdresse.Text;
Settings.Default.Save();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
gbxConnection.Enabled = true;
}
finally
{
btCnx.Enabled = true;
}
}
else
{
try
{
await _connection.StopAsync();;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
