public static IPHostEntry GetHostByAddr(IPAddress address)
{
// TODO #2891: Optimize this (or decide if this legacy code can be removed):
int addressAsInt = unchecked ((int)address.GetAddress());
#if BIGENDIAN
// TODO #2891: above code needs testing for BIGENDIAN.
addressAsInt = (int)(((uint)addressAsInt << 24) | (((uint)addressAsInt & 0x0000FF00) << 8) |
(((uint)addressAsInt >> 8) & 0x0000FF00) | ((uint)addressAsInt >> 24));
#endif
IntPtr nativePointer =
Interop.Winsock.gethostbyaddr(
ref addressAsInt,
Marshal.SizeOf <int>(),
ProtocolFamily.InterNetwork);
if (nativePointer != IntPtr.Zero)
{
return(NativeToHostEntry(nativePointer));
}
throw new SocketException();
}
internal virtual NbtAddress[] GetHosts()
{
try
{
_waitResponse = false;
byte[] bAddrBytes = laddr.GetAddressBytes();
for (int i = 1; i <= 254; i++)
{
NodeStatusRequest request;
NodeStatusResponse response;
byte[] addrBytes = {
bAddrBytes[0],
bAddrBytes[1],
bAddrBytes[2],
(byte)i
};
IPAddress addr = new IPAddress(addrBytes);
response = new NodeStatusResponse(new NbtAddress(NbtAddress.UnknownName,
addr.GetAddress(), false, 0x20));
request = new NodeStatusRequest(new Name(NbtAddress.AnyHostsName, unchecked(0x20), null));
request.Addr = addr;
Send(request, response, 0);
}
}
catch (IOException ioe)
{
if (_log.Level > 1)
{
Runtime.PrintStackTrace(ioe, _log);
}
throw new UnknownHostException(ioe);
}
_autoResetWaitReceive = new AutoResetEvent(false);
_thread = new Thread(this);
_thread.SetDaemon(true);
_thread.Start();
_autoResetWaitReceive.WaitOne();
List<NbtAddress> result = new List<NbtAddress>();
foreach (var key in _responseTable.Keys)
{
NodeStatusResponse resp = (NodeStatusResponse)_responseTable[key];
if (resp.Received && resp.ResultCode == 0)
{
foreach (var entry in resp.AddressArray)
{
if (entry.HostName.HexCode == 0x20)
{
result.Add(entry);
}
}
}
}
_responseTable.Clear();
_waitResponse = true;
return result.Count > 0 ? result.ToArray() : null;
}
public static IPHostEntry GetHostByAddr(IPAddress address)
{
// TODO #2891: Optimize this (or decide if this legacy code can be removed):
int addressAsInt = unchecked((int)address.GetAddress());
#if BIGENDIAN
// TODO #2891: above code needs testing for BIGENDIAN.
addressAsInt = (int)(((uint)addressAsInt << 24) | (((uint)addressAsInt & 0x0000FF00) << 8) |
(((uint)addressAsInt >> 8) & 0x0000FF00) | ((uint)addressAsInt >> 24));
#endif
IntPtr nativePointer =
Interop.Winsock.gethostbyaddr(
ref addressAsInt,
Marshal.SizeOf<int>(),
ProtocolFamily.InterNetwork);
if (nativePointer != IntPtr.Zero)
{
return NativeToHostEntry(nativePointer);
}
throw new SocketException();
}
