internal virtual void TryClose()
{
lock (_lock)
{
if (_socket != null)
{
_socket.Dispose();
_socket = null;
}
_thread = null;
if (_waitResponse)
{
_responseTable.Clear();
}
else
{
_autoResetWaitReceive.Set();
}
}
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual void EnsureOpen(int timeout)
{
_closeTimeout = 0;
if (SoTimeout != 0)
{
_closeTimeout = Math.Max(SoTimeout, timeout);
}
// If socket is still good, the new closeTimeout will
// be ignored; see tryClose comment.
if (_socket == null)
{
_socket = new SocketEx(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
_socket.Bind(new IPEndPoint(laddr.Address(), _lport));
if (_waitResponse)
{
_thread = new Thread(this); //new Sharpen.Thread(this, "JCIFS-NameServiceClient");
_thread.SetDaemon(true);
_thread.Start();
}
}
}
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,
(int)addr.Address(), 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);
}