/// <summary>
/// Checks, if a certain <paramref name="port"/> is opened on the local machine.
/// </summary>
/// <remarks>
/// <para>Original version found at <see>http://stackoverflow.com/questions/570098/in-c-how-to-check-if-a-tcp-port-is-available/></see>.</para>
/// </remarks>
/// <exception cref="ArgumentException">Is thrown if the <paramref name="port"/> parameter contains a value less or equal than 0.</exception>
/// <param name="port">The number of the port to check.</param>
/// <returns><c>True</c> if the port is opened, otherwise <c>false.</c></returns>
public static bool IsPortOpened(int port)
{
CheckUtil.ThrowIfZeroOrNegativ(() => port);
var ipGlobalProperties = IPGlobalProperties.GetIPGlobalProperties();
var tcpConnInfoArray = ipGlobalProperties.GetActiveTcpListeners();
return(tcpConnInfoArray.Any(ep => ep.Port == port));
}