pcpp::gtpv1_header Struct Reference

#include <GtpLayer.h>

Public Attributes
uint8_t	npduNumberFlag: 1
	A 1-bit value that states whether there is a N-PDU number optional field.
uint8_t	sequenceNumberFlag: 1
	A 1-bit value that states whether there is a Sequence Number optional field.
uint8_t	extensionHeaderFlag: 1
	A 1-bit value that states whether there is an extension header optional field.
uint8_t	reserved: 1
	Reserved bit.
uint8_t	protocolType: 1
	A 1-bit value that differentiates GTP (value 1) from GTP' (value 0)
uint8_t	version: 3
	GTP version.
uint8_t	messageType
	An 8-bit field that indicates the type of GTP message.
uint16_t	messageLength
uint32_t	teid

Detailed Description

GTP v1 common message header

Member Data Documentation

messageLength

uint16_t pcpp::gtpv1_header::messageLength

A 16-bit field that indicates the length of the payload in bytes (rest of the packet following the mandatory 8-byte GTP header). Includes the optional fields

teid

uint32_t pcpp::gtpv1_header::teid

Tunnel endpoint identifier - A 32-bit(4-octet) field used to multiplex different connections in the same GTP tunnel