pcpp::iphdr Struct Reference

#include <IPv4Layer.h>

Public Attributes
uint8_t	internetHeaderLength: 4
	IP header length, has the value of 5 for IPv4.
uint8_t	ipVersion: 4
	IP version number, has the value of 4 for IPv4.
uint8_t	typeOfService
	type of service, same as Differentiated Services Code Point (DSCP)
uint16_t	totalLength
	Entire packet (fragment) size, including header and data, in bytes.
uint16_t	ipId
uint16_t	fragmentOffset
	Fragment offset field, measured in units of eight-byte blocks (64 bits)
uint8_t	timeToLive
uint8_t	protocol
	Defines the protocol used in the data portion of the IP datagram. Must be one of IPProtocolTypes.
uint16_t	headerChecksum
	Error-checking of the header.
uint32_t	ipSrc
	IPv4 address of the sender of the packet.
uint32_t	ipDst
	IPv4 address of the receiver of the packet.

Detailed Description

Represents an IPv4 protocol header

Member Data Documentation

ipId

uint16_t pcpp::iphdr::ipId

Identification field. Primarily used for uniquely identifying the group of fragments of a single IP datagram

timeToLive

uint8_t pcpp::iphdr::timeToLive

An eight-bit time to live field helps prevent datagrams from persisting (e.g. going in circles) on an internet. In practice, the field has become a hop count