public static void DnsRefreshTimeout_Roundtrips()
{
Assert.Equal(120000, ServicePointManager.DnsRefreshTimeout);
ServicePointManager.DnsRefreshTimeout = 42;
Assert.Equal(42, ServicePointManager.DnsRefreshTimeout);
ServicePointManager.DnsRefreshTimeout = 120000;
Assert.Equal(120000, ServicePointManager.DnsRefreshTimeout);
}