bool CClientList::AttachToAlreadyKnown(CUpDownClient** client, CClientReqSocket* sender){
POSITION pos1, pos2;
CUpDownClient* tocheck = (*client);
CUpDownClient* found_client = NULL;
CUpDownClient* found_client2 = NULL;
for (pos1 = list.GetHeadPosition();( pos2 = pos1 ) != NULL;){ //
 list.GetNext(pos1);
 CUpDownClient* cur_client = list.GetAt(pos2);
 if (tocheck->Compare(cur_client,false)){ //matching userhash
  found_client2 = cur_client;
 }
 if (tocheck->Compare(cur_client,true)){  //matching IP
  found_client = cur_client;
  break;
 }
}
if (found_client == NULL)
 found_client = found_client2;

if (found_client != NULL){
 if (tocheck == found_client){
  //we found the same client instance (client may have sent more than one OP_HELLO). do not delete that client!
  return true;
 }
 if (sender){
  if (found_client->socket){
   if (found_client->socket->IsConnected()
    && (found_client->GetIP() != tocheck->GetIP() || found_client->GetUserPort() != tocheck->GetUserPort() ) )
   {
    // if found_client is connected and has the IS_IDENTIFIED, it's safe to say that the other one is a bad guy
    if (found_client->Credits() && found_client->Credits()->GetCurrentIdentState(found_client->GetIP()) == IS_IDENTIFIED){
     if (thePrefs.GetLogBannedClients())
      AddDebugLogLine(false, _T("Clients: %s (%s), Banreason: Userhash invalid"), tocheck->GetUserName(), ipstr(tocheck->GetConnectIP()));
     tocheck->Ban();
     return false;
    }

    //IDS_CLIENTCOL Warning: Found matching client, to a currently connected client: %s (%s) and %s (%s)
    if (thePrefs.GetLogBannedClients())
     AddDebugLogLine(true,GetResString(IDS_CLIENTCOL), tocheck->GetUserName(), ipstr(tocheck->GetConnectIP()), found_client->GetUserName(), ipstr(found_client->GetConnectIP()));
    return false;
   }
   found_client->socket->client = 0;
   found_client->socket->Safe_Delete();
  }
  found_client->socket = sender;
  tocheck->socket = 0;
 }
 *client = 0;
 delete tocheck;
 *client = found_client;
 return true;
}
return false;
}