public void GetHostByName_LocalHost_GetHostByAddr()
{
IPHostEntry hostEntry1 = NameResolutionPal.GetHostByName("localhost");
Assert.NotNull(hostEntry1);
IPHostEntry hostEntry2 = NameResolutionPal.GetHostByAddr(hostEntry1.AddressList[0]);
Assert.NotNull(hostEntry2);
IPAddress[] list1 = hostEntry1.AddressList;
IPAddress[] list2 = hostEntry2.AddressList;
for (int i = 0; i < list1.Length; i++)
{
Assert.NotEqual(-1, Array.IndexOf(list2, list1[i]));
}
}
public void TryGetAddrInfo_HostName_TryGetNameInfo()
{
string hostName = NameResolutionPal.GetHostName();
Assert.NotNull(hostName);
IPHostEntry hostEntry;
int nativeErrorCode;
SocketError error = NameResolutionPal.TryGetAddrInfo(hostName, out hostEntry, out nativeErrorCode);
Assert.Equal(SocketError.Success, error);
Assert.NotNull(hostEntry);
string name = NameResolutionPal.TryGetNameInfo(hostEntry.AddressList[0], out error, out nativeErrorCode);
Assert.Equal(SocketError.Success, error);
Assert.NotNull(name);
}
public void TryGetAddrInfo_HostName_TryGetNameInfo()
{
string hostName = NameResolutionPal.GetHostName();
Assert.NotNull(hostName);
IPHostEntry hostEntry;
int nativeErrorCode;
SocketError error = NameResolutionPal.TryGetAddrInfo(hostName, out hostEntry, out nativeErrorCode);
if (error == SocketError.HostNotFound)
{
// On Unix, getaddrinfo returns host not found, if all the machine discovery settings on the local network
// is turned off. Hence dns lookup for it's own hostname fails.
Assert.Equal(PlatformID.Unix, Environment.OSVersion.Platform);
return;
}
// Temporary instrumentation for #32797
if (error == SocketError.TryAgain && Environment.OSVersion.Platform == PlatformID.Unix)
{
error = NameResolutionPal.TryGetAddrInfo(hostName, out hostEntry, out nativeErrorCode);
if (error != SocketError.TryAgain)
{
throw new InvalidOperationException("Name resolution failure preventable with retry");
}
}
Assert.Equal(SocketError.Success, error);
Assert.NotNull(hostEntry);
string name = NameResolutionPal.TryGetNameInfo(hostEntry.AddressList[0], out error, out nativeErrorCode);
if (error == SocketError.HostNotFound)
{
// On Unix, getaddrinfo returns private ipv4 address for hostname. If the OS doesn't have the
// reverse dns lookup entry for this address, getnameinfo returns host not found.
Assert.Equal(PlatformID.Unix, Environment.OSVersion.Platform);
return;
}
Assert.Equal(SocketError.Success, error);
Assert.NotNull(name);
}
public void GetHostByName_HostName_GetHostByAddr()
{
var hostName = NameResolutionPal.GetHostName();
Assert.NotNull(hostName);
var hostEntry1 = NameResolutionPal.GetHostByName(hostName);
Assert.NotNull(hostEntry1);
var hostEntry2 = NameResolutionPal.GetHostByAddr(hostEntry1.AddressList[0]);
Assert.NotNull(hostEntry2);
var list1 = hostEntry1.AddressList;
var list2 = hostEntry2.AddressList;
for (int i = 0; i < list1.Length; i++)
{
Assert.Equal(list1[i], list2[i]);
}
}
public void GetHostByName_HostName_GetHostByAddr()
{
IPHostEntry hostEntry1 = NameResolutionPal.GetHostByName(HttpTestServers.Http2Host);
Assert.NotNull(hostEntry1);
IPAddress[] list1 = hostEntry1.AddressList;
Assert.InRange(list1.Length, 1, Int32.MaxValue);
foreach (IPAddress addr1 in list1)
{
IPHostEntry hostEntry2 = NameResolutionPal.GetHostByAddr(addr1);
Assert.NotNull(hostEntry2);
IPAddress[] list2 = hostEntry2.AddressList;
Assert.InRange(list2.Length, 1, list1.Length);
foreach (IPAddress addr2 in list2)
{
Assert.NotEqual(-1, Array.IndexOf(list1, addr2));
}
}
}
public void TryGetAddrInfo_HostName()
{
string hostName = NameResolutionPal.GetHostName();
Assert.NotNull(hostName);
IPHostEntry hostEntry;
int nativeErrorCode;
SocketError error = NameResolutionPal.TryGetAddrInfo(hostName, out hostEntry, out nativeErrorCode);
if (error == SocketError.HostNotFound && (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) || RuntimeInformation.IsOSPlatform(OSPlatform.OSX)))
{
// On Unix, we are not guaranteed to be able to resove the local host. The ability to do so depends on the
// machine configurations, which varies by distro and is often inconsistent.
return;
}
Assert.Equal(SocketError.Success, error);
Assert.NotNull(hostEntry);
Assert.NotNull(hostEntry.HostName);
Assert.NotNull(hostEntry.AddressList);
Assert.NotNull(hostEntry.Aliases);
}
public void GetHostByAddr_LocalHost()
{
Assert.NotNull(NameResolutionPal.GetHostByAddr(new IPAddress(0x0100007f)));
}
public void HostName_NotNull()
{
Assert.NotNull(NameResolutionPal.GetHostName());
}
static NameResolutionPalTests()
{
NameResolutionPal.EnsureSocketsAreInitialized();
}
public void TryGetAddrInfo_LocalHost(bool justAddresses)
{
SocketError error = NameResolutionPal.TryGetAddrInfo("localhost", justAddresses, AddressFamily.Unspecified, out string hostName, out string[] aliases, out IPAddress[] addresses, out int nativeErrorCode);
public NameResolutionPalTests(ITestOutputHelper output)
{
NameResolutionPal.EnsureSocketsAreInitialized();
_output = output;
}
public void Dns_Resolve_CallSocketInit_Ok()
{
NameResolutionPal.FakesReset();
Assert.ThrowsAny <Exception>(() => Dns.Resolve(null));
Assert.NotEqual(0, NameResolutionPal.FakesEnsureSocketsAreInitializedCallCount);
}
public void Dns_GetHostEntry_IPAddress_CallSocketInit_Ok()
{
NameResolutionPal.FakesReset();
Assert.ThrowsAny <Exception>(() => Dns.GetHostEntry((IPAddress)null));
Assert.NotEqual(0, NameResolutionPal.FakesEnsureSocketsAreInitializedCallCount);
}
public void Dns_BeginGetHostEntry_String_CallSocketInit_Ok()
{
NameResolutionPal.FakesReset();
Assert.ThrowsAny <Exception>(() => Dns.BeginGetHostEntry((string)null, null, null));
Assert.NotEqual(0, NameResolutionPal.FakesEnsureSocketsAreInitializedCallCount);
}
public void Dns_GetHostName_CallsSocketInit_Ok()
{
NameResolutionPal.FakesReset();
Assert.ThrowsAny <Exception>(() => Dns.GetHostName());
Assert.Equal(1, NameResolutionPal.FakesEnsureSocketsAreInitializedCallCount);
}
public void GetHostByName_InvalidHostName_Throws(string hostName)
{
Assert.ThrowsAny <SocketException>(() => NameResolutionPal.GetHostByName(hostName));
}