proxygen::HPACKEncoderBase Class Reference

#include <HPACKEncoderBase.h>

Inheritance diagram for proxygen::HPACKEncoderBase:

Public Member Functions
	HPACKEncoderBase (bool huffman)
void	setHeaderTableSize (HeaderTable &table, uint32_t size)
void	setHeaderIndexingStrategy (const HeaderIndexingStrategy *indexingStrat)
const HeaderIndexingStrategy *	getHeaderIndexingStrategy () const

Static Public Attributes
static const uint32_t	kBufferGrowth = 4000

Protected Member Functions
void	handlePendingContextUpdate (HPACKEncodeBuffer &buf, uint32_t tableCapacity)

Protected Attributes
const HeaderIndexingStrategy *	indexingStrat_
HPACKEncodeBuffer	streamBuffer_
bool	pendingContextUpdate_ {false}

Detailed Description

Common encoder functionality between HPACK and QPACK

Definition at line 21 of file HPACKEncoderBase.h.

Constructor & Destructor Documentation

proxygen::HPACKEncoderBase::HPACKEncoderBase ( bool  huffman )

inlineexplicit

Definition at line 24 of file HPACKEncoderBase.h.

References proxygen::HeaderIndexingStrategy::getDefaultInstance(), and indexingStrat_.

    : streamBuffer_(kBufferGrowth, huffman) {
    indexingStrat_ = HeaderIndexingStrategy::getDefaultInstance();
  }

Member Function Documentation

const HeaderIndexingStrategy* proxygen::HPACKEncoderBase::getHeaderIndexingStrategy ( ) const

inline

Definition at line 46 of file HPACKEncoderBase.h.

References handlePendingContextUpdate(), indexingStrat_, and uint32_t.

                                                                  {
    return indexingStrat_;
  }

void proxygen::HPACKEncoderBase::handlePendingContextUpdate ( HPACKEncodeBuffer &  buf, uint32_t  tableCapacity  )

protected

Definition at line 14 of file HPACKEncoderBase.cpp.

References proxygen::HPACKEncodeBuffer::encodeInteger(), pendingContextUpdate_, proxygen::HPACK::Q_TABLE_SIZE_UPDATE, and proxygen::HPACK::TABLE_SIZE_UPDATE.

Referenced by proxygen::HPACKEncoder::encode(), proxygen::QPACKEncoder::encode(), and getHeaderIndexingStrategy().

                                                                          {
  CHECK_EQ(HPACK::TABLE_SIZE_UPDATE.code, HPACK::Q_TABLE_SIZE_UPDATE.code) <<
    "Code assumes these are equal";
  if (pendingContextUpdate_) {
    VLOG(5) << "Encoding table size update size=" << tableCapacity;
    buf.encodeInteger(tableCapacity, HPACK::TABLE_SIZE_UPDATE);
    pendingContextUpdate_ = false;
  }
}

void proxygen::HPACKEncoderBase::setHeaderIndexingStrategy ( const HeaderIndexingStrategy *  indexingStrat )

inline

Definition at line 43 of file HPACKEncoderBase.h.

References indexingStrat_.

Referenced by proxygen::QPACKEncoder::QPACKEncoder().

                                                                              {
    indexingStrat_ = indexingStrat;
  }

void proxygen::HPACKEncoderBase::setHeaderTableSize ( HeaderTable &  table, uint32_t  size  )

inline

Definition at line 36 of file HPACKEncoderBase.h.

References proxygen::HeaderTable::capacity(), pendingContextUpdate_, and proxygen::HeaderTable::setCapacity().

Referenced by proxygen::HPACKEncoder::setHeaderTableSize(), and proxygen::QPACKEncoder::setHeaderTableSize().

                                                             {
    if (size != table.capacity()) {
      CHECK(table.setCapacity(size));
      pendingContextUpdate_ = true;
    }
  }

Member Data Documentation

const HeaderIndexingStrategy* proxygen::HPACKEncoderBase::indexingStrat_

protected

Definition at line 55 of file HPACKEncoderBase.h.

Referenced by proxygen::HPACKEncoder::encodeHeader(), getHeaderIndexingStrategy(), HPACKEncoderBase(), setHeaderIndexingStrategy(), and proxygen::QPACKEncoder::shouldIndex().

const uint32_t proxygen::HPACKEncoderBase::kBufferGrowth = 4000

static

Size of a new IOBuf which is added to the chain

jemalloc will round up to 4k - overhead

Definition at line 34 of file HPACKEncoderBase.h.

bool proxygen::HPACKEncoderBase::pendingContextUpdate_ {false}

protected

Definition at line 57 of file HPACKEncoderBase.h.

Referenced by handlePendingContextUpdate(), and setHeaderTableSize().

HPACKEncodeBuffer proxygen::HPACKEncoderBase::streamBuffer_

protected

Definition at line 56 of file HPACKEncoderBase.h.

Referenced by proxygen::HPACKEncoder::encode(), proxygen::QPACKEncoder::encode(), proxygen::HPACKEncoder::encodeAsIndex(), proxygen::QPACKEncoder::encodeHeaderQ(), proxygen::HPACKEncoder::encodeLiteral(), proxygen::QPACKEncoder::encodeLiteralQ(), and proxygen::QPACKEncoder::encodeQ().

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The documentation for this class was generated from the following files:

• proxygen/lib/http/codec/compress/HPACKEncoderBase.h
• proxygen/lib/http/codec/compress/HPACKEncoderBase.cpp