/// <summary>
/// Main Listener function that wait for any client that wants to send file or profile images
/// </summary>
/// <param name="tokenEndListener">Cancellation token from the MainWindows</param>
/// <returns>Return a task, it is used to allow the Task asynchronous programming model (TAP)</returns>
public async Task Listener(CancellationToken tokenEndListener)
{
while (!tokenEndListener.IsCancellationRequested)
{
source = new CancellationTokenSource();
CancellationToken tokenListener = source.Token;
lock (_referenceData.cvListener) {
while (_referenceData.GetLocalIPAddress().Equals(""))
{
Monitor.Wait(_referenceData.cvListener);
}
}
Console.WriteLine($"{DateTime.Now.ToString()}\t - Change Listener local IP {_referenceData.GetLocalIPAddress()}");
IPAddress localAddr = IPAddress.Parse(_referenceData.GetLocalIPAddress());
try {
// Create a TCPLIstenr object
server = new TcpListener(localAddr, SharedInfo.TCPPort);
server.Start();
// Listener loop
while (!tokenListener.IsCancellationRequested)
{
Console.WriteLine($"{DateTime.Now.ToString()}\t - TCPListener Waiting for connection...");
await server.AcceptTcpClientAsync().WithWaitCancellation(tokenListener).ContinueWith(async(antecedent) => {
try {
TcpClient client = antecedent.Result;
await ServeClient((TcpClient)antecedent.Result);
}
catch (Exception e) {
Console.WriteLine($"{DateTime.Now.ToString()}\t - TCPListener Exception {e.Message}");
}
}, TaskContinuationOptions.OnlyOnRanToCompletion);
}
}
catch (SocketException e) {
Console.WriteLine($"{DateTime.Now.ToString()}\t - TCPListener SocketException - {e.Message}");
}
catch (OperationCanceledException e) {
Console.WriteLine($"{DateTime.Now.ToString()}\t - TCPListener OperationCanceledException - {e.Message}");
Console.WriteLine($"{DateTime.Now.ToString()}\t - End execution because of destruction of the cancellation token");
}
catch (Exception e) {
Console.WriteLine($"{DateTime.Now.ToString()}\t - TCPListener Exception - {e.GetType()} {e.Message}");
}
finally {
if (server != null)
{
server.Stop();
}
}
}
}
