Help with Impulse's 5165

[xBlackPlagu3x]

I've looked at the database, looked through the code, looked at code that wasn't even relevant to the error and I still cannot find the error to the following, I just don't understand it. (Wow, what it be real easy...)

Error Message:

 Spoiler

Load the character stats.
System.NullReferenceException: Object reference not set to an instance of an object.
	at Conquer_Online_Server.Program.Main<String[] args> in D:\Conquer\impluse 5165\Conquer_Online_Server\Program.cs:line46

Line 40-51 in Program.cs:

 Spoiler

                MySqlReader r = new MySqlReader(cmd);
                if (r.Read())
                {
                    EntityUID = new ServerBase.Counter(r.ReadUInt32("EntityID"));
                    Network.GamePackets.ConquerItem.ItemUID = new Conquer_Online_Server.ServerBase.Counter(r.ReadUInt32("ItemUID"));
                }
                if (EntityUID.Next == 1)
                {
                    Console.WriteLine("Database error. Please check your MySQL. Server will now close.");
                    Console.ReadLine();
                    return;
                }

Database(codatabase), Table(Configuration), Column(EntityUID), Data(1000230)

Any information needed other than that? Thanks for those of you who help me out, I need Impulse's source fixed up so I can have a chance to learn as many others have done from this source.

[-impulse-]

it means your database connection wasn't successful.

[BaussHacker]

EntityUID is null.

It's only assigned, if MySqlReader r is reading.

If your code does not enter through
if (r.Read())
{
}
Then it will not be assigned, so that's where your problem is.

As Impulse said, there is no database connection.

[xBlackPlagu3x]

I'm such an idiot. It was because I didn't set my ServerName to the one I put in the database. So THAT is fixed.

But I've encountered another problem and I can obviously tell it has something to do with the EntityUID.

ErrorCode:

 Spoiler

System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: startIndex
    at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
    at System.BitConverter.ToInt32(Byte[] value, Int32 startIndex)
    at Conquer_Online_Server.Program.GameServer_AnnounceReceive(Byte[] arg1, Wrapper arg2, Byte[] arg3) in C:\Users\MeteoraDevelopment\Downloads\Conquer Online Source (impulse)\Conquer_Online_Server\Program.cs:line 301

Where the null reference was handled is:

 Spoiler

if (ServerBase.Kernel.GamePool.ContainsKey(this.Entity.UID))

And the line of code at line 301 in Program.cs is:

 Spoiler

int Len = BitConverter.ToInt32(arg1, position); position += 4;

Don't flame this and call me an idiot. I at least know what the problem is, just not how to go about solving it.

[BaussHacker]

arg1's length is not equal or above position.

[Spirited]

Tada....

try
                            {
                                Client.Exchange = false;

                                Client.Action = 1;
                                ushort position = 7;
                                uint PacketLen = BitConverter.ToUInt32(arg1, position);
                                int JunkLen = BitConverter.ToInt32(arg1, position += 4); 
                                int Len = BitConverter.ToInt32(arg1, position += (ushort)(JunkLen + 4));
                                byte[] pubKey = new byte[Len];
                                position += 4;
                                string PubKey = System.Text.ASCIIEncoding.ASCII.GetString(arg1, position, Len);

                                Client.Cryptography = Client.DHKeyExchance.HandleClientKeyPacket(PubKey, Client.Cryptography);
                            }

[N.I.G.H.T.M.A.R.E]

Man, I could not understand his explanation to fix this bug, can you explain again?

[EOS 60D]

Its a copy paste work dude there is no need to understand..

[Spirited]

There are two problems being discussed by this thread. One of the problems that was encountered was the null exception with the mysql reader. That happened because the MySql database wasn't set up correctly. The second problem was causing the client to hang due to some offset calculation issues. I fixed those calculations to be correct. That's all.