pcpp::IPv4TotalLengthFilter Class Reference

#include <PcapFilter.h>

Inheritance diagram for pcpp::IPv4TotalLengthFilter:

Public Member Functions
	IPv4TotalLengthFilter (uint16_t totalLength, FilterOperator op)
void	parseToString (std::string &result) const override
void	setTotalLength (uint16_t totalLength)
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 IPv4 traffic by "total length" field of the IPv4 protocol, for example: "filter only IPv4 traffic which "total length" value is less than 60B"

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

Constructor & Destructor Documentation

IPv4TotalLengthFilter()

pcpp::IPv4TotalLengthFilter::IPv4TotalLengthFilter ( uint16_t  totalLength, FilterOperator  op  )

inline

A constructor that gets the total length to filter and the operator and creates the filter out of them

Parameters

[in]	totalLength	The total length value to filter
[in]	op	The operator to use (e.g "equal", "greater than", etc.)

Member Function Documentation

parseToString()

void pcpp::IPv4TotalLengthFilter::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

Implements pcpp::GeneralFilter.

setTotalLength()

void pcpp::IPv4TotalLengthFilter::setTotalLength ( uint16_t  totalLength )

inline

Set the total length value

Parameters

[in]

totalLength

The total length value to filter