/// <summary>
/// Raises the <see cref="ConnectionAttemptFailed"/> event.
/// </summary>
protected virtual void OnConnectionAttemptFailed(ConnectionAttemptFailedEventArgs e)
{
ConnectionAttemptFailed(this, e);
}
/// <summary>
/// Try to connect, according to the set <see cref="MaxConnectionAttempts"/>, asynchronously.
/// </summary>
/// <exception cref="InvalidOperationException"></exception>
/// <exception cref="AlreadyLoggedInException"></exception>
public void RequestLogin()
{
// Already requesting.
if (Status == ClientStatus.Connected || Status == ClientStatus.Connecting)
{
return;
}
if (EndPoint == null)
{
throw new InvalidOperationException($@"The property ""{EndPoint}"" cannot be null.");
}
if (Status == ClientStatus.LoggedIn)
{
throw new AlreadyLoggedInException(
$@"""{Name}"" is already logged in. You must logout this client before logging in again.", null);
}
Socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
abortConnectionPending = false;
connectionAttempts = 0;
ReceiveSendGuard = false;
Status = ClientStatus.Connecting;
Task.Run(() =>
{
while (Socket != null && !Socket.Connected && !abortConnectionPending)
{
try
{
Socket.Connect(EndPoint);
Status = ClientStatus.Connected;
StartReceiving();
// Ask to login.
SendPackageAsyncBase((int)BaseCommand.Login, new LoginContent(Name));
return;
}
catch (SocketException)
{
connectionAttempts++;
var args = new ConnectionAttemptFailedEventArgs(
connectionAttempts,
MaxConnectionAttempts > 0 && connectionAttempts > MaxConnectionAttempts,
abortConnectionPending);
UiContext.Default.Invoke(delegate
{
if (args.EndOfAttempts)
{
Status = ClientStatus.Disconnected;
}
OnConnectionAttemptFailed(args);
});
if (args.EndOfAttempts)
{
break;
}
}
}
});
}