CheckIp() public method

public CheckIp ( string ip ) : IP
ip string
return IP
        private void ProcessHelloPacket(HelloPacket pkt)
        {
            db = new Database();
            //Console.Out.WriteLine(pkt.GUID + ": " + pkt.Password);
            if ((account = db.Verify(pkt.GUID, pkt.Password)) == null)
            {
                Console.WriteLine(@"Account not verified.");
                account = Database.CreateGuestAccount(pkt.GUID);

                if (account == null)
                {
                    Console.WriteLine(@"Account is null!");
                    SendPacket(new FailurePacket
                    {
                        Message = "Invalid account."
                    });
                    Disconnect();
                    db.Dispose();
                    return;
                }
                
            }
            if ((ip = db.CheckIp(skt.RemoteEndPoint.ToString().Split(':')[0])) == null)
            {
                Console.WriteLine(@"Error checking IP");
                SendPacket(new FailurePacket
                {
                    Message = "Error with IP."
                });
                Disconnect();
                db.Dispose();
                return;
            }
            Console.WriteLine(@"Client trying to connect!");
            ConnectedBuild = pkt.BuildVersion;
            if (!RealmManager.TryConnect(this))
            {
                if (CheckAccountInUse(account.AccountId) != false)
                {
                    Console.WriteLine(@"Account in use: " + account.AccountId + @" " + account.Name);
                    account = null;
                    SendPacket(new FailurePacket
                    {
                        Message = "Account in use! Retrying..."
                    });
                    Disconnect();
                    db.Dispose();
                    return;
                }
                account = null;
                SendPacket(new FailurePacket
                {
                    Message = "Failed to connect."
                });
                Disconnect();
                Console.WriteLine(@"Failed to connect.");
            }
            else
            {
                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.WriteLine(@"Client loading world");
                Console.ForegroundColor = ConsoleColor.White;
                var world = RealmManager.GetWorld(pkt.GameId);
                if (world == null)
                {
                    SendPacket(new FailurePacket
                    {
                        Message = "Invalid world."
                    });
                    Disconnect();
                    Console.WriteLine(@"Invalid world");
                }
                Console.ForegroundColor = ConsoleColor.Yellow;
                try
                {
                    Console.WriteLine(@"Client joined world " + world.Id);
                }
                catch
                {
                    Console.WriteLine(@"Error! World is null");
                }
                Console.ForegroundColor = ConsoleColor.White;
                if (world.Id == -6) //Test World
                    (world as Test).LoadJson(pkt.MapInfo);

                else if (world.IsLimbo)
                    world = world.GetInstance(this);
                var seed = (uint) ((long) Environment.TickCount*pkt.GUID.GetHashCode())%uint.MaxValue;
                Random = new wRandom(seed);
                targetWorld = world.Id;
                if (!ConnectedBuildStartsWith(clientVer))
                {
                    SendPacket(new TextPacket
                    {
                        BubbleTime = 1,
                        Stars = -1,
                        Name = "",
                        Text = "Your client is outdated. Visit http://forum.zerorealms.com to get the latest one!"
                    });
                    Disconnect();
                    /*SendPacket(new TextBoxPacket
                    {
                        Button1 = "Okay",
                        Message = "Your client is outdated, Click <font color=\"white\"><b><a href='http://forum.zerorealms.com'>Here</a></b></font> to get the latest one!",
                        Title = "Outdated Client!",
                        Type = "NewClient"
                    });*/
                }
                SendPacket(new MapInfoPacket
                {
                    Width = world.Map.Width,
                    Height = world.Map.Height,
                    Name = world.Name,
                    Seed = seed,
                    Background = world.Background,
                    AllowTeleport = world.AllowTeleport,
                    ShowDisplays = world.ShowDisplays,
                    Music = world.GetMusic(Random),
                    ClientXML = world.ClientXML,
                    ExtraXML = world.ExtraXML,

                    SendMusic = ConnectedBuildStartsWith(clientVer)
                });
                stage = ProtocalStage.Handshaked;
            }
        }
        private void ProcessHelloPacket(HelloPacket pkt)
        {
            if (isGuest)
                Disconnect();
            db = new Database();
//            Console.Out.WriteLine(pkt.GUID + ": " + pkt.Password);
//            Console.Out.WriteLine(pkt.GUID + ": " + account.AccountId + @" " + account.Name);
            if ((account = db.Verify(pkt.GUID, pkt.Password)) == null)
            {
                Console.WriteLine(@"Account not verified.");
                account = Database.CreateGuestAccount(pkt.GUID);

                if (account == null)
                {
                    Console.WriteLine(@"Account is null!");
                    SendPacket(new FailurePacket
                    {
                        Message = "Invalid account."
                    });
                    Disconnect();
                    return;
                }
            }
            if ((ip = db.CheckIp(skt.RemoteEndPoint.ToString().Split(':')[0])) == null)
            {
                Console.WriteLine(@"Error checking IP");
                SendPacket(new FailurePacket
                {
                    Message = "Error with IP."
                });
                Disconnect();
                return;
            }
            Console.WriteLine(@"Client trying to connect!" + account.AccountId + @" " + account.Name);
            ConnectedBuild = pkt.BuildVersion;
            if (!RealmManager.TryConnect(this))
            {
                if (CheckAccountInUse(account.AccountId) != false)
                {
                    Console.WriteLine(@"Account in use: " + account.AccountId + @" " + account.Name);
                    account = null;
                    SendPacket(new FailurePacket
                    {
                        Message = "Account in use! Retrying..."
                    });
                    Disconnect();
                    return;
                }
                account = null;
                SendPacket(new FailurePacket
                {
                    Message = "Failed to connect."
                });
                Disconnect();
                Console.WriteLine(@"Failed to connect.");
            }
            else
            {
                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.WriteLine(@"Client loading world");
                Console.ForegroundColor = ConsoleColor.White;
                var world = RealmManager.GetWorld(pkt.GameId);
                if (world == null)
                {
                    SendPacket(new FailurePacket
                    {
                        Message = "Invalid world, Restart your Client."
                    });
                    Disconnect();
                    Console.WriteLine(@"Invalid world");
                }

                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.WriteLine(@"Client joined world " + world.Id);
                Console.ForegroundColor = ConsoleColor.White;
                if (world.Id == -6) //Test World
                    (world as Test).LoadJson(pkt.MapInfo);

                else if (world.IsLimbo)
                    world = world.GetInstance(this);
                var seed = (uint) ((long) Environment.TickCount*pkt.GUID.GetHashCode())%uint.MaxValue;
                Random = new wRandom(seed);
                targetWorld = world.Id;
                SendPacket(new MapInfoPacket
                {
                    Width = world.Map.Width,
                    Height = world.Map.Height,
                    Name = world.Name,
                    Seed = seed,
                    Background = world.Background,
                    AllowTeleport = world.AllowTeleport,
                    ShowDisplays = world.ShowDisplays,
                    ClientXML = world.ClientXML,
                    ExtraXML = world.ExtraXML
                });
                stage = ProtocalStage.Handshaked;
            }
        }