#include <PcapFilter.h>

Inheritance diagram for pcpp::UdpLengthFilter:

Public Member Functions
	UdpLengthFilter (uint16_t length, FilterOperator op)

void	parseToString (std::string &result) const override

void	setLength (uint16_t length)

Public Member Functions inherited from pcpp::IFilterWithOperator
void	setOperator (FilterOperator op)

Public Member Functions inherited from pcpp::GeneralFilter
virtual	~GeneralFilter ()=default
	Virtual destructor, frees the bpf program.

bool	matchPacketWithFilter (RawPacket *rawPacket) const

bool	matches (RawPacket const &rawPacket) const
	Match a raw packet against the filter. More...

Additional Inherited Members
Protected Member Functions inherited from pcpp::GeneralFilter
bool	cacheFilter () const
	Parse the filter and cache the compiled BPF program. More...

void	invalidateCache () const
	Invalidate the cached BPF program. This method should be called whenever the filter changes.

Detailed Description

A class for filtering UDP packets that matches UDP length criteria.

For deeper understanding of the filter concept please refer to PcapFilter.h

Constructor & Destructor Documentation

pcpp::UdpLengthFilter::UdpLengthFilter	(	uint16_t	length,
		FilterOperator	op
	)

inline

A constructor that get the UDP length and operator and creates the filter. For example: "filter all UDP packets with length greater or equal to 500"

Parameters

[in]	length	The length value that will be used in the filter
[in]	op	The operator to use (e.g "equal", "greater than", etc.)

void pcpp::UdpLengthFilter::parseToString ( std::string & result ) const

overridevirtual

A method that parses the class instance into BPF string format

Parameters

[out] result An empty string that the parsing will be written into. If the string isn't empty, its content will be overridden

void pcpp::UdpLengthFilter::setLength ( uint16_t length )

inline

Set length value

Parameters

[in] length The length value that will be used in the filter