24 #ifndef NDN_CXX_LP_NACK_HPP    25 #define NDN_CXX_LP_NACK_HPP   110 #endif // NDN_CXX_LP_NACK_HPP 
Nack & setHeader(const NackHeader &header)
Represents an Interest packet. 
NackReason
indicates the reason type of a network NACK 
const NackHeader & getHeader() const
Nack & setHeader(NackHeader &&header)
represents a Network Nack 
NackReason getReason() const
base class to allow simple management of packet tags 
Nack & setReason(NackReason reason)
const Interest & getInterest() const