AlliedModders - [CS:GO] Invalid arguments in hooked function

I'm trying to hook this function:
INetChannel::ProcessPacket( struct netpacket_s* packet, bool bHasHeader )

Here is my code:

PHP Code:


		
			
INetChannel* pNetChan = static_cast<INetChannel*>(engine->GetPlayerNetInfo(Index()));
if(pNetChan)
{
        processPacketHookId_ = SH_ADD_HOOK_MEMFUNC(INetChannel, ProcessPacket, pNetChan, this, &CPlayer::ProcessPacket, true);

}
void CPlayer::ProcessPacket(struct netpacket_s* packet, bool bHasHeader )
{
}

The hook works, but the arguments contain junk data. If I call packet->message the server crashes.
I found this source code in the SDK:

PHP Code:


		
			
void CNetChan::ProcessPacket( netpacket_t * packet, bool bHasHeader )

Here is how this function looks in ida:

PHP Code:


		
			
int __cdecl sub_28CBC0(int a1, int a2, char a3)

This is how bf_read position is set in this function:

PHP Code:


		
			
bf_read &msg = packet->message;    // handy shortcut
msg.Seek( 0 );

The same in IDA:

PHP Code:


		
			
v51 = a2 + 48;
sub_314FF0(a2 + 48, 0);
v3 = *(_DWORD *)(a1 + 196);

If I'm correct with my undrestending, it takes the second argument from the function, that is netpacket_s* packet, then it gets the buffer from the netpacket_s* (which is at offset 48 ).

In inetchannel.h second argument is bool and bf_read offset is 32
Can it be that INetChannel and netpacket_s are incorrect in the SDK, if yes, where can I get the correct header?

UPD, I placed 4 dummy integers at the begining of netpacket_s structure, and now I can access bf_read, however all the other variables are a mistery and the bool argument in the function is incorrect.