isc::dns::MessageRenderer::MessageRendererImpl Struct Reference

The MessageRendererImpl class is the actual implementation of MessageRenderer. More...

Public Member Functions
	MessageRendererImpl ()
	Constructor.
void	addOffset (size_t hash, size_t offset, size_t len)
uint16_t	findOffset (const OutputBuffer &buffer, InputBuffer &name_buf, size_t hash, bool case_sensitive) const

Public Attributes
CompressMode	compress_mode_
	The name compression mode.
uint16_t	msglength_limit_
	The maximum length of rendered data that can fit without truncation.
boost::array< size_t, Name::MAX_LABELS >	seq_hashes_
vector< OffsetItem >	table_ [BUCKETS]
bool	truncated_
	A boolean flag that indicates truncation has occurred while rendering the data.

Static Public Attributes
static const size_t	BUCKETS = 64
static const uint16_t	NO_OFFSET = 65535
static const size_t	RESERVED_ITEMS = 16

Detailed Description

The MessageRendererImpl class is the actual implementation of MessageRenderer.

The implementation is hidden from applications. We can refer to specific members of this class only within the implementation source file.

It internally holds a hash table for OffsetItem objects corresponding to portions of names rendered in this renderer. The offset information is used to compress subsequent names to be rendered.

Definition at line 155 of file messagerenderer.cc.

Constructor & Destructor Documentation

MessageRendererImpl()

isc::dns::MessageRenderer::MessageRendererImpl::MessageRendererImpl ( )

inline

Constructor.

Definition at line 165 of file messagerenderer.cc.

References BUCKETS, RESERVED_ITEMS, and table_.

Member Function Documentation

addOffset()

void isc::dns::MessageRenderer::MessageRendererImpl::addOffset ( size_t  hash, size_t  offset, size_t  len  )

inline

Definition at line 198 of file messagerenderer.cc.

References BUCKETS, and table_.

findOffset()

uint16_t isc::dns::MessageRenderer::MessageRendererImpl::findOffset ( const OutputBuffer &  buffer, InputBuffer &  name_buf, size_t  hash, bool  case_sensitive  ) const

inline

Definition at line 174 of file messagerenderer.cc.

References BUCKETS, NO_OFFSET, and table_.

Member Data Documentation

BUCKETS

const size_t isc::dns::MessageRenderer::MessageRendererImpl::BUCKETS = 64

static

Definition at line 160 of file messagerenderer.cc.

Referenced by MessageRendererImpl(), addOffset(), isc::dns::MessageRenderer::clear(), and findOffset().

compress_mode_

CompressMode isc::dns::MessageRenderer::MessageRendererImpl::compress_mode_

The name compression mode.

Definition at line 211 of file messagerenderer.cc.

msglength_limit_

uint16_t isc::dns::MessageRenderer::MessageRendererImpl::msglength_limit_

The maximum length of rendered data that can fit without truncation.

Definition at line 206 of file messagerenderer.cc.

NO_OFFSET

const uint16_t isc::dns::MessageRenderer::MessageRendererImpl::NO_OFFSET = 65535

static

Definition at line 162 of file messagerenderer.cc.

Referenced by findOffset(), and isc::dns::MessageRenderer::writeName().

RESERVED_ITEMS

const size_t isc::dns::MessageRenderer::MessageRendererImpl::RESERVED_ITEMS = 16

static

Definition at line 161 of file messagerenderer.cc.

Referenced by MessageRendererImpl(), and isc::dns::MessageRenderer::clear().

seq_hashes_

boost::array<size_t, Name::MAX_LABELS> isc::dns::MessageRenderer::MessageRendererImpl::seq_hashes_

Definition at line 216 of file messagerenderer.cc.

table_

vector<OffsetItem> isc::dns::MessageRenderer::MessageRendererImpl::table_[BUCKETS]

Definition at line 203 of file messagerenderer.cc.

Referenced by MessageRendererImpl(), addOffset(), and findOffset().

truncated_

bool isc::dns::MessageRenderer::MessageRendererImpl::truncated_

A boolean flag that indicates truncation has occurred while rendering the data.

Definition at line 209 of file messagerenderer.cc.

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

• messagerenderer.cc