{

public:

// check if we have network information for this user

virtual bool CheckUserRegistered(unsigned int userID) = 0;

// update a user's network information

virtual void UpdateUserNetInfo(unsigned int userID, unsigned int netSessionID, int serverID, int IP, int port) = 0;

// set whether or not we send directly to user or through the server

virtual void SetUserSendViaServer(unsigned int userID, bool bSendViaServer) = 0;

// Gets a blob of data that represents this user's information

virtual bool GetUserNetInfoBlob(unsigned int userID, unsigned int dataBlob[8]) = 0;

// Sets a user's information using the same blob of data type

virtual bool SetUserNetInfoBlob(unsigned int userID, const unsigned int dataBlob[8]) = 0;

// send binary data to user, marked with game/sessionID

virtual void SendAddOnPacket(const char *pszGameID, SessionInt64 addOnSessionID, unsigned int userID, const CUtlMsgBuffer& buffer) = 0;