private int GetReplyUrlPort(bool onPremise, InteractiveParameters interactiveParameters)
{
int portStart = onPremise ? AdfsPortStart : AadPortStart;
int portEnd = onPremise ? AdfsPortEnd : AadPortEnd;
int port = portStart;
TcpListener listener = null;
do
{
try
{
listener = new TcpListener(IPAddress.Loopback, port);
listener.Start();
listener.Stop();
return(port);
}
catch (Exception ex)
{
interactiveParameters.PromptAction(string.Format("Port {0} is taken with exception '{1}'; trying to connect to the next port.", port, ex.Message));
listener?.Stop();
}
}while (++port < portEnd);
throw new Exception("Cannot find an open port.");
}
private Uri GetReplyUrl(bool onPremise, InteractiveParameters interactiveParameters)
{
var port = GetReplyUrlPort(onPremise, interactiveParameters);
return(new Uri($"http://localhost:{port}"));
}