[Nel] about the FES and WS for snowball2

[truename]

hey,i got a troublesome,everybody can help me?i started the WS successful,but the WS crashed after i started the FES ,i found the FES sent the mesage to WS at void CLoginServer::connectToWS () with the contents:
CMessage msg("UN_SIDENT");
nlassert (IService::getInstance());
uint16 ssid = IService::getInstance()->getServiceId();
string name = IService::getInstance()->getServiceShortName();
msg.serial(name);
msg.serial(ssid); // serializes a 16 bits service id
//--------------------------------------------
// corefans modified for debug
//uint8 pos = 0;//will be 0?
//msg..serial(pos);
//if insert these code above,the WS will be successful,but the client snowball2 can't connect to FES
//--------------------------------------------
CNetManager::send("WS", msg);
then the WS received the msg at
void uncbServiceIdentification(CMessage &msgin, TSockId from, CCallbackNetBase netbase) in unified_network.cpp:
msgin.serial(inSName);
msgin.serial(inSid);
uint8 pos;
msgin.serial (pos);//this line will be crash!


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