/// <summary>
/// Asynchronously creates a <see cref="SecureUdpConnection"/> with the given parent <see cref="TcpConnection"/>.
/// </summary>
/// <param name="tcpConnection">The <see cref="TcpConnection"/> via which to connect the <see cref="SecureUdpConnection"/>.</param>
/// <param name="rsaPair">The RSA key-pair to use.</param>
/// <returns>
/// A <see cref="Task"/> representing the asynchronous operation with the promise of a tuple holding the created
/// <see cref="SecureUdpConnection"/> and <see cref="ConnectionResult"/> on completion.
/// </returns>
/// <exception cref="ArgumentException">The given <see cref="TcpConnection"/> isn't connected.</exception>
public static async Task <Tuple <UdpConnection, ConnectionResult> > CreateSecureUdpConnectionAsync(TcpConnection tcpConnection, RSAPair rsaPair)
{
UdpConnection udpConnection = null;
ConnectionResult connectionResult = ConnectionResult.Connected;
CancellationTokenSource cancellationToken = new CancellationTokenSource();
cancellationToken.CancelAfter(CONNECTION_TIMEOUT);
if (tcpConnection == null || !tcpConnection.IsAlive)
{
return(new Tuple <UdpConnection, ConnectionResult>(udpConnection, ConnectionResult.TCPConnectionNotAlive));
}
tcpConnection.EstablishUdpConnection((localEndPoint, RemoteEndPoint) => udpConnection = new SecureUdpConnection(new UdpClient(localEndPoint), RemoteEndPoint, rsaPair));
while (udpConnection == null && !cancellationToken.IsCancellationRequested)
{
await Task.Delay(25);
}
if (udpConnection == null && cancellationToken.IsCancellationRequested)
{
connectionResult = ConnectionResult.Timeout;
}
return(new Tuple <UdpConnection, ConnectionResult>(udpConnection, connectionResult));
}
/// <summary>
/// Creates a new instance of a udp connection async.
/// </summary>
/// <param name="tcpConnection">The tcp connection to establish the udp connection.</param>
/// <returns>Task<UdpConnection>.</returns>
/// <exception cref="ArgumentException">TcpConnection is not connected to the endpoint.</exception>
public static async Task <Tuple <UdpConnection, ConnectionResult> > CreateUdpConnectionAsync(TcpConnection tcpConnection)
{
UdpConnection udpConnection = null;
ConnectionResult connectionResult = ConnectionResult.Connected;
CancellationTokenSource cancellationToken = new CancellationTokenSource();
cancellationToken.CancelAfter(CONNECTION_TIMEOUT);
if (tcpConnection == null || !tcpConnection.IsAlive)
{
throw new ArgumentException("TcpConnection is not connected to the endpoint.");
}
tcpConnection.EstablishUdpConnection((localEndPoint, RemoteEndPoint) => udpConnection = new UdpConnection(new UdpClient(localEndPoint), RemoteEndPoint));
while (udpConnection == null && !cancellationToken.IsCancellationRequested)
{
await Task.Delay(25);
}
if (udpConnection == null && cancellationToken.IsCancellationRequested)
{
connectionResult = ConnectionResult.Timeout;
}
return(new Tuple <UdpConnection, ConnectionResult>(udpConnection, connectionResult));
}
/// <summary>
/// Creates a new instance of a udp connection async.
/// </summary>
/// <param name="tcpConnection">The tcp connection to establish the udp connection.</param>
/// <returns>Task<UdpConnection>.</returns>
/// <exception cref="ArgumentException">TcpConnection is not connected to the endpoint.</exception>
public static async Task<Tuple<UdpConnection, ConnectionResult>> CreateUdpConnectionAsync(TcpConnection tcpConnection)
{
UdpConnection udpConnection = null;
ConnectionResult connectionResult = ConnectionResult.Connected;
CancellationTokenSource cancellationToken = new CancellationTokenSource();
cancellationToken.CancelAfter(CONNECTION_TIMEOUT);
if (tcpConnection == null || !tcpConnection.IsAlive) throw new ArgumentException("TcpConnection is not connected to the endpoint.");
tcpConnection.EstablishUdpConnection((localEndPoint, RemoteEndPoint) => udpConnection = new UdpConnection(new UdpClient(localEndPoint), RemoteEndPoint));
while (udpConnection == null && !cancellationToken.IsCancellationRequested) await Task.Delay(25);
if (udpConnection == null && cancellationToken.IsCancellationRequested) connectionResult = ConnectionResult.Timeout;
return new Tuple<UdpConnection, ConnectionResult>(udpConnection, connectionResult);
}
