UDPPKT Struct Reference

Internal UDP Packet Header Structure. More...

#include <ip.h>

Public Attributes
beuint16_t	srcPort
	Source port number (0-65535)
beuint16_t	dstPort
	Destination port number (0-65535)
beuint16_t	UdpLen
	Datagram length in bytes including UDP header and data (minimum 8 bytes)
uint16_t	UdpCSum
	UDP checksum (optional in IPv4, mandatory in IPv6)
uint8_t	DATA []
	Flexible array member - UDP payload data follows header (actual length = UdpLen - 8)

Detailed Description

Internal UDP Packet Header Structure.

Standard UDP header as defined in RFC 768. This structure represents the 8-byte UDP header that precedes the UDP payload data.

The DATA[] flexible array member allows direct access to the UDP payload that follows the header.

Note

This structure is packed to ensure proper alignment with network packet data.

UDP header is always 8 bytes long (no options like TCP).

The checksum is optional in IPv4 (can be zero) but mandatory in IPv6.

Member Data Documentation

UdpCSum

uint16_t UDPPKT::UdpCSum

UDP checksum (optional in IPv4, mandatory in IPv6)

Warning

Do not make big endian - see IPPKT::hCSum for explanation

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The documentation for this struct was generated from the following file:

• ip.h