Custom client for 3.3.5, issue with sending addon info

[Anachoreta]

Hi community ! Could somebody explain what is expected by mangos SessionAnticheat::ReadAddonInfo function ? When I try to send CMSG_AUTH_SESSION from my custom client, I got an error there and it's unclear what I should send. Just sending uint32(0) returns an error too. So seems like I should send some fingerprint from "Blizzard_BindingUI", "Blizzard_InspectUI", "Blizzard_MacroUI", "Blizzard_RaidUI". But what is expected ? CRC Hash ? maybe something else ?

UPDATED
To clarify, I passed authentication successfully, so srp steps and hmac sha1 steps passed. Just need to know how to correctly send addon info.

[Anachoreta]

Well, I tried to debug what mangos got from wotlk client and found, that client send:
uint32 addonSize // uncompressed size in bytes
compressed data:
uint32 addonCount

array:
String addonName + "\0"
uint8 flags
uint32 modulus crc
uint32 urlcrc crc

also there uint32 at the end of compressed data, seems like timestamp.

I tried all levels of zlib compress to send addonInfo like wotlk client sent, but seems like smth wrong,
because before I was getting error with -5 code from the code below, now I got -3 error code:

if (uncompress(const_cast<Bytef*>(clientAddonData.contents()), &addonSize,
        reinterpret_cast<const Bytef *>(authSession->contents() + authSession->rpos()),
        static_cast<uLongf>(authSession->size() - authSession->rpos())) != Z_OK)
    {
        sLog.outBasic("ADDON: Addon information failed to compress.  Account %s (id %u) IP %s",
            _session->GetAccountName().c_str(), _session->GetAccountId(), _session->GetRemoteAddress().c_str());

        return false;
    }

Does anybode know how to send addon info correctly ?

[paulc03]

I don't know the solution to your problem but I'm interested in the login code you wrote for the custom client. Care to share it? At least the login part, I'm kinda stuck there

[Anachoreta]

In case somebody will look for smth like that I solved the issue and published first version of my client: GitHub - idewave/idewave-cli: Rust implementation of smart cli for world of warcraft server v3.3.5a