Null help.

12/24/2010 12:41 Santa#1

Alright, i don't know why i had my last thread closed, I guess I thought I could handle is.

I have been at this problem literally all day and have tried 4 different socket wrappers and they all have the same issue.

PHP Code:


			
Console.WriteLine("Incoming Auth Data");

AuthClient sender = Sender.Wrapper as AuthClient; 

sender.AuthServer.Send(Data);

This is currently Hybrids socket that were upgraded for 5018+
sender is ALWAYS null so when i try to send the data it throws the null exception. My question is is how come it is null and won't 'define' as a AuthClient. If it helps this is my AuthClient class

Spoiler

PHP Code:


			
public class AuthClient

    {

        public string Username, Server, Name, Spouse, GameIp;

        public uint UID;

        public Socket ClientSock;

        public WinsockClient AuthServer;

        public LoginEncryption.AuthProtocolCryptographer ClientAuth;

        public LoginEncryption.AuthProtocolCryptographer ServerAuth;

        public byte[] Buffer;

        public void Disconnect()

        {

            try

            {

                Console.WriteLine("Disconnect()");

                this.Buffer = null;

                this.ClientSock.Disconnect(true);

                this.AuthServer.Disconnect();

                //remove from LoginConnection

            }

            catch { }

        }

        public AuthClient(Socket C, ushort Port)

        {

            ClientSock = C;

            try

            {

                ClientAuth = new LoginEncryption.AuthProtocolCryptographer();

                ServerAuth = new LoginEncryption.AuthProtocolCryptographer();

                Buffer = new byte[1024];

                AuthServer = new WinsockClient(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                AuthServer.Enable(Program.ServerIP, Port, this.Buffer);

                AuthServer.OnReceive += new SocketEventCallback<WinsockClient, byte[]>(AuthServer_OnReceive);

                AuthServer.OnDisconnect += new SocketEventCallback<WinsockClient, object>(AuthServer_OnDisconnect);

            }

            catch

            {

                Console.WriteLine("Failed to connect to auth server!");

                try

                {

                    //remove from LoginConnections

                    this.ClientSock.Disconnect(false);

                    this.ClientSock.Dispose();

                }

                catch { }

            }

        }

        void AuthServer_OnDisconnect(WinsockClient Sender, object Arg)

        {

            Disconnect();

        }

        void AuthServer_OnReceive(WinsockClient Sender, byte[] Arg)

        {

            Console.WriteLine("Auth Server Packet recvieved");

            try { AuthHandler.HandleServerPacket(Arg, this); }

            catch { }

        }

    }

If you could help that would be wonderful.

Thanks

12/24/2010 13:18 Nullable#2

I think this is happening because you're not setting the Wrapper member in WinsockClient to the AuthClient instance.

Code:

AuthServer.Wrapper = this

However it is irrelevant, why are you using the Sender.Wrapper instead of directly using 'this' keyword? You're essentially in a member function of the same class.

12/24/2010 16:26 KraHen#3

If sender is null that means that Wrapper can`t be casted to AuthClient. Check why they`re not compatible in your code.

12/24/2010 17:38 pro4never#4

To clear up what they are saying some... go to where you have your on connect method and set the wrapper to the instance of the auth client object you create...

IE on connect you'd be doing something like...

Sender.Wraper = new AuthClient(Socket, Port);

that way the wrapper is not null and you can therefor use it when receiving packets from that client.

12/24/2010 22:55 Santa#5

I do set it to an instance if the auth client

Sender.Wrapper = new AuthClient(Sender); Within the AuthConnect.

Edit:
Here is my connections class

Spoiler

PHP Code:


			
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using OpenSSL;
using System.Net;
using System.Net.Sockets;
using Network;
namespace Conquer_Proxy.Connections
{
    class Connections
    {
        public static void Connect()
        {
            ConquerSocket AuthS = new ConquerSocket();
            AuthS.Port = Program.ProxyPort;
            AuthS.ClientBufferSize = 100;
            AuthS.Backlog = 10;
            AuthS.OnClientDisconnect = new SocketEvent<HybridWinsockClient, object>(AuthDisconnect);
            AuthS.OnClientReceive = new SocketEvent<HybridWinsockClient, byte[]>(AuthReceive);
            AuthS.OnClientConnect = new SocketEvent<HybridWinsockClient, object>(AuthConnect);
            AuthS.Enable();

            ConquerSocket GameS = new ConquerSocket();
            GameS.Port = 5000;
            GameS.ClientBufferSize = 1000;
            GameS.Backlog = 10;
            GameS.OnClientDisconnect = new SocketEvent<HybridWinsockClient, object>(GameDisconnect);
            GameS.OnClientReceive = new SocketEvent<HybridWinsockClient, byte[]>(GameReceive);
            GameS.OnClientConnect = new SocketEvent<HybridWinsockClient, object>(GameConnect);
            GameS.Enable();

            /*ServerSocket Auth = new ServerSocket();
            Auth.Listen(5001);
            Auth.OnClientDisconnect += new SocketErrorEvent(Auth_OnClientDisconnect);
            Auth.OnReceivePacket += new SocketEvent(Auth_OnReceivePacket);
            Auth.OnClientConnect += new SocketEvent(Auth_OnClientConnect);

            ServerSocket Game = new ServerSocket();
            Game.Listen(5000);
            Game.OnClientDisconnect += new SocketErrorEvent(Game_OnClientDisconnect);
            Game.OnReceivePacket += new SocketEvent(Game_OnReceivePacket);
            Game.OnClientConnect += new SocketEvent(Game_OnClientConnect);*/
        }
        public static void AuthConnect(HybridWinsockClient Sender, object param)
        {//First
            try
            {
                Console.WriteLine("Accepting New Auth Connection");
                //remove from LoginConnections
                Sender.Wrapper = new AuthClient(Sender);
                //add to LoginConnections
            }
            catch (Exception e) { Console.WriteLine(e.ToString()); }
        }
        public static void AuthReceive(HybridWinsockClient Sender, byte[] param)
        {//Second
            try
            {
                byte[] Data = param;
                Console.WriteLine("Incoming Auth Data");
                AuthClient sender = Sender.Wrapper as AuthClient; 
                Console.WriteLine("Length: " + Data.Length + " Data: \r\n" + Dump(Data));
                sender.AuthServer.Send(Data);
            }
            catch (Exception e) { Console.WriteLine(e.ToString()); }
        }
        public static void AuthDisconnect(HybridWinsockClient Sender, object param)
        {
            try
            {
                Console.WriteLine("Auth Disconnected");
                ((AuthClient)param).Disconnect();
            }
            catch (Exception e) { Console.WriteLine(e.ToString()); }
        }
        public static void GameConnect(HybridWinsockClient Sender, object param)
        {//third
            try
            {
                Console.WriteLine("Accepting New Game Connection");
                //ifconnected client contains socket- disconnect
                param = new Client(Sender.Connection, Program.ServerGamePort);
                //add connected client
            }
            catch { }
        }
        public static void GameReceive(HybridWinsockClient Sender, byte[] param)
        {//forth
            try
            {
                byte[] Data = param;
                Console.WriteLine("Accepting Game Data");
                Client C = Sender.Wrapper as Client;
                C.ServerCrypto.Decrypt(Data);
                if (C.Exchanging && Data.Length > 36)
                {
                    C.ClientDHPacket = new Encryption.ClientDHPacket(Data);
                    C.ClientDHPacket.Edit(Data, C.ClientCrypto.DH.PublicKey.ToHexString());
                    C.ToServerQueue.Enqueue(Data);
                    SetUpCrypt(C);
                }
                else { /*split client packet*/ }
            }
            catch { }
        }
        public static void GameDisconnect(HybridWinsockClient Sender, object param)
        {
            Console.WriteLine("Game Disconnected");
            Client C = Sender.Wrapper as Client;
            //disconnect
        }
        public static object Dump(byte[] Bytes)
        {
            string Hex = "";
            foreach (byte b in Bytes)
            {
                Hex = Hex + b.ToString("X2") + " ";
            }
            string Out = "";
            while (Hex.Length != 0)
            {
                int SubLength = 0;
                if (Hex.Length >= 48)
                {
                    SubLength = 48;
                }
                else
                {
                    SubLength = Hex.Length;
                }
                string SubString = Hex.Substring(0, SubLength);
                int Remove = SubString.Length;
                SubString = SubString.PadRight(60, ' ');
                Hex = Hex.Remove(0, Remove);
                Out = Out + SubString + "\r\n";
            }
            return Out;
        }
        static void SetUpCrypt(Client C)
        {
            try
            {
                BigNumber RealClientPublicKey = BigNumber.FromHexString(C.ClientDHPacket.Client_PubKey);
                BigNumber RealServerPublicKey = BigNumber.FromHexString(C.ServerDHPacket.Server_PubKey);

                Encryption.GameEncryption ClientCrypt = new Encryption.GameEncryption(ASCIIEncoding.ASCII.GetString((C.ClientCrypto).DH.ComputeKey(RealServerPublicKey)));
                Encryption.GameEncryption ServerCrypt = new Encryption.GameEncryption(ASCIIEncoding.ASCII.GetString((C.ServerCrypto).DH.ComputeKey(RealClientPublicKey)));

                ClientCrypt.Blowfish.EncryptIV = C.ServerDHPacket.ClientIV;
                ClientCrypt.Blowfish.DecryptIV = C.ServerDHPacket.ServerIV;

                ServerCrypt.Blowfish.EncryptIV = C.ServerDHPacket.ServerIV;
                ServerCrypt.Blowfish.DecryptIV = C.ServerDHPacket.ClientIV;

                C.ClientCrypto = ClientCrypt;
                C.ServerCrypto = ServerCrypt;
                C.Exchanging = false;
            }
            catch (Exception e) { Console.WriteLine(e.ToString()); }
        }

    }
}

12/26/2010 13:37 InfamousNoone#6

That's strange PM me your MSN or something, I wouldn't mind helping you debug it.