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struct   RegisterRequest {
    short UnitLength;
    byte    UnitType;    //  0x01  is for  RegisterRequest
    short  LocalApplyPort;
    long double   LocalApplyID;
};
 
struct   RegisterReply {
    short UnitLength;
    byte  UnitType;     //   0x02   is  for  RegisterReply
    byte   Return;       //  return 0  if  it  is  successful,    return other number  if  not  successful
};
typedef struct  Register
{
     struct   RegisterRequest tRegisterRequest;
     struct   RegisterReply     tRegisterReply;
}tRegister;