public void EnhancedDns_HostLookup_Uncached()
{
DateTime start;
string duration;
try
{
EnhancedDns.EnableCaching = false;
start = SysTime.Now;
for (int i = 0; i < 10; i++)
{
EnhancedDns.GetHostByName("localhost");
EnhancedDns.GetHostByName("www.google.com");
EnhancedDns.GetHostByName("www.microsoft.com");
EnhancedDns.GetHostByName("www.ibm.com");
}
duration = (SysTime.Now - start).TotalSeconds.ToString();
}
finally
{
EnhancedDns.Reset();
}
}
public void EnhancedDns_AddRemoveHosts()
{
// Verify that we can modify the HOSTS file. Note that it may
// be necessary to disable local Virus and Spyware detection
// software for this test to pass.
try
{
IPHostEntry entry;
try
{
Dns.GetHostEntry("test01.test.lilltek.com");
Assert.Fail();
}
catch (SocketException)
{
// Expecting this to fail
}
try
{
Dns.GetHostEntry("test02.test.lilltek.com");
Assert.Fail();
}
catch (SocketException)
{
// Expecting this to fail
}
EnhancedDns.AddHost("test01.test.lilltek.com", IPAddress.Parse("72.0.0.1"));
EnhancedDns.AddHost("test02.test.lilltek.com", IPAddress.Parse("72.0.0.2"));
entry = Dns.GetHostEntry("test01.test.lilltek.com");
Assert.AreEqual(IPAddress.Parse("72.0.0.1"), entry.AddressList[0]);
entry = Dns.GetHostEntry("test02.test.lilltek.com");
Assert.AreEqual(IPAddress.Parse("72.0.0.2"), entry.AddressList[0]);
EnhancedDns.RemoveHosts();
try
{
Dns.GetHostEntry("test01.test.lilltek.com");
Assert.Fail();
}
catch (SocketException)
{
// Expecting this to fail
}
try
{
Dns.GetHostEntry("test02.test.lilltek.com");
Assert.Fail();
}
catch (SocketException)
{
// Expecting this to fail
}
}
finally
{
EnhancedDns.RemoveHosts();
EnhancedDns.Reset();
}
}