SharpCifs.Smb.SmbSession.Interrogate C# (CSharp) Method

		private static NtlmChallenge Interrogate(NbtAddress addr)
		{
			UniAddress dc = new UniAddress(addr);
			SmbTransport trans = SmbTransport.GetSmbTransport(dc, 0);
			if (Username == null)
			{
				trans.Connect();
                if (SmbTransport.LogStatic.Level >= 3)
				{
                    SmbTransport.LogStatic.WriteLine("Default credentials (jcifs.smb.client.username/password)"
						 + " not specified. SMB signing may not work propertly." + "  Skipping DC interrogation."
						);
				}
			}
			else
			{
				SmbSession ssn = trans.GetSmbSession(NtlmPasswordAuthentication.Default
					);
				ssn.GetSmbTree(LogonShare, null).TreeConnect(null, null);
			}
			return new NtlmChallenge(trans.Server.EncryptionKey, dc);
		}