Writing C# emu from scratch (3.3.5), stuck on character list. Can someone help?

[GobVs]

Hello!
I'm implementing 3.3.5a emulator from zero for learning purposes, but stuck on a place without progress. What I have now:
-auth challenge/proof works, server-side and client proof match correcrly
-sending realmlist works
-worldserver sends SMSG_AUTH_CHALLENGE and receives CMSG_AUTH_SESSION, calculated proof matches client proof (so I assume this step works correctly)
-worldserver sends SMSG_AUTH_RESPONSE encrypted header and client starts retrieving characters, i'm getting CMSG_READY_FOR_ACCOUNT_DATA_TIMES, CMSG_REALM_SPLIT, CMSG_CHAR_ENUM.
-if I stay online, client keeps CMSG_PING periodically

After replying to all three packets I'm getting an "error while loading character list". I also tried to implement CMSG_CHAR_CREATE/SMSG_CHAR_CREATE, sending 1 byte 0x2E, but client is now stuck at "Creating character" and that's it. If I cancel creating character, the client again throws all three packets (ready for times, split, enum), and stuck on loading. At this point I assume something is wrong with packet sending or one of packet structures is wrong, while receiving works correctly (Sending 1 byte char enum with zero inside leads to no error tho, while creating char after is still stuck)
Here's my connection.log

7/17 02:39:51.044  GRUNT: state: LOGIN_STATE_CONNECTING result: LOGIN_OK 
7/17 02:39:51.044  GRUNT: state: RESPONSE_CONNECTED result: LOGIN_OK 127.0.0.1:3724
7/17 02:39:51.145  GRUNT: state: LOGIN_STATE_AUTHENTICATING result: LOGIN_OK 
7/17 02:39:51.220  GRUNT: state: LOGIN_STATE_CHECKINGVERSIONS result: LOGIN_OK 
7/17 02:39:51.259  GRUNT: state: LOGIN_STATE_HANDSHAKING result: LOGIN_OK 
7/17 02:39:51.259  GRUNT: state: LOGIN_STATE_AUTHENTICATED result: LOGIN_OK 
7/17 02:39:51.259  ClientConnection Initiating: COP_CONNECT code=CSTATUS_CONNECTING 
7/17 02:39:51.301  ClientConnection Completed: COP_CONNECT code=RESPONSE_CONNECTED result=TRUE
7/17 02:39:51.301  ClientConnection Initiating: COP_AUTHENTICATE code=CSTATUS_AUTHENTICATING 
7/17 02:39:51.376  ClientConnection Completed: COP_AUTHENTICATE code=AUTH_OK result=TRUE
7/17 02:39:51.876  ClientConnection Initiating: COP_GET_CHARACTERS code=43 
7/17 02:39:51.891  ClientConnection Completed: COP_GET_CHARACTERS code=45 result=FALSE   <--- error loading characters
7/17 02:39:57.076  ClientConnection Initiating: COP_CREATE_CHARACTER code=46 
7/17 02:45:07.510  ClientConnection Completed: COP_CREATE_CHARACTER code=RESPONSE_CANCELLED result=FALSE    <---- stuck at creating character, manually cancelled
7/17 02:45:08.486  ClientConnection Initiating: COP_GET_CHARACTERS code=43 
7/17 02:45:12.876  ClientConnection Completed: COP_GET_CHARACTERS code=RESPONSE_CANCELLED result=FALSE   <---- stuck at loading characters, manually cancelled
7/17 02:45:12.879  ClientConnection Initiating: COP_GET_REALMS code=REALM_LIST_IN_PROGRESS  <--- client DCed himself and returned to realmlist
7/17 02:45:12.879  ClientConnection Completed: COP_GET_REALMS code=REALM_LIST_SUCCESS result=TRUE
7/17 02:45:14.068  ClientConnection Initiating: COP_CONNECT code=CSTATUS_CONNECTING 
7/17 02:45:14.068  ClientConnection Completed: COP_CONNECT code=RESPONSE_CONNECTED result=TRUE
7/17 02:45:14.068  ClientConnection Initiating: COP_AUTHENTICATE code=CSTATUS_AUTHENTICATING 
7/17 02:45:14.084  ClientConnection Completed: COP_AUTHENTICATE code=AUTH_OK result=TRUE
7/17 02:45:14.084  ClientConnection Initiating: COP_GET_CHARACTERS code=43 
7/17 02:45:14.084  ClientConnection Completed: COP_GET_CHARACTERS code=45 result=FALSE
7/17 02:45:43.810  GRUNT: state: LOGIN_STATE_DISCONNECTED result: LOGIN_OK

I also can't understand what is account data times, so probably here's some error. Here's what I'm responding with

        var sheader = new ServerPacketHeader(4 + 1 + 4 + 8 * 4, Opcode.SMSG_ACCOUNT_DATA_TIMES);
        _encryptor.Encrypt(ref sheader);
        _smsg.Write(sheader);
        var time = (uint)DateTimeOffset.Now.ToUnixTimeSeconds();
        _smsg.Write(time);
        _smsg.Write(1);
        _smsg.Write((uint)0x15);
        for (int i = 0; i < 8; i++)
        {
            _smsg.Write((uint)0);
        }
        _stream.PushPacket(_smsg);

Also char enum code:

        _smsg.Position = 4; //leave space for header
        _smsg.Write(1); //char count
        _smsg.Write((ulong)1); // character guid
        _smsg.Write("Test"); //extension method, null-terminated
        _smsg.Write(1); // race
        _smsg.Write(1); //class
        _smsg.Write(1); //gender
        _smsg.Write(8); //skin
        _smsg.Write(2); //face
        _smsg.Write(8); //hairstyle
        _smsg.Write(5); //haircolor
        _smsg.Write(6); //facialstyle
        _smsg.Write(80); //level
        _smsg.Write((uint)12); //zone
        _smsg.Write((uint)0); //map
        _smsg.Write(-8949.95F); //x  coords and zone/map is some race' starting location
        _smsg.Write(-132.493F); //y
        _smsg.Write(83.5312F); //z
        _smsg.Write((uint)0); //guild id
        _smsg.Write((uint)0); // char flags
        _smsg.Write((uint)0); // at login flags
        _smsg.Write(0); //first login
        _smsg.Write((uint)0); //pet display id
        _smsg.Write((uint)0); //pet level
        _smsg.Write((uint)0); //pet family
        for (int i = 0; i < 23; i++) //gear info
        {
            _smsg.Write((uint)0);
            _smsg.Write(0);
            _smsg.Write((uint)0);
        }
        var pos = _smsg.Position;
        var header = new ServerPacketHeader((ushort)_smsg.Position, Opcode.SMSG_CHAR_ENUM);
        _encryptor.Encrypt(ref header);
        _smsg.Position = 0; //write header at start
        _smsg.Write(header);
        _smsg.Position = pos; //restore position for writer method
        _stream.PushPacket(_smsg);

Can someone help figuring out where I'm failing?

Edit: I was sending wrong character create result, now I'm sending 47 and after creating it successfully returns me back to the character list. List loading still not working tho.

[GobVs]

Ok the problem is figured out and I feel a bit dumb now. I was setting Position to 4 for header offset, and then calculating packet size from stream position, which was 4 bytes more than intended.

[Vragoth]

is it open source at the moment? I'm curious to see a modern C# emulator.

[GobVs]

is it open source at the moment? I'm curious to see a modern C# emulator.

My goal is to implement a very basic blizz-style auth-char-worldnodes model on a fresh codebase (i.e. enter charserver, select char, redirect to worldnode during load and successfully proof connection is the goal). If I can achieve this, I have plans on making repo open-source, but right now I think there's nothing to show, as a decent part of code is "throw as is, to see how it works"