blob: 01c861d59053308bf0bd1d9a82c8a2fff219982b [file] [log] [blame]
// Copyright (c) 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <algorithm>
#include <functional>
#include <string>
#include <utility>
#include "absl/strings/string_view.h"
#include "quic/platform/api/quic_bug_tracker.h"
#include "quic/platform/api/quic_export.h"
#include "common/quiche_circular_deque.h"
#include "spdy/core/spdy_header_block.h"
#include "spdy/core/spdy_headers_handler_interface.h"
namespace quic {
// A simple class that accumulates header pairs
class QUIC_EXPORT_PRIVATE QuicHeaderList
: public spdy::SpdyHeadersHandlerInterface {
using ListType =
quiche::QuicheCircularDeque<std::pair<std::string, std::string>>;
using value_type = ListType::value_type;
using const_iterator = ListType::const_iterator;
QuicHeaderList(QuicHeaderList&& other);
QuicHeaderList(const QuicHeaderList& other);
QuicHeaderList& operator=(QuicHeaderList&& other);
QuicHeaderList& operator=(const QuicHeaderList& other);
~QuicHeaderList() override;
// From SpdyHeadersHandlerInteface.
void OnHeaderBlockStart() override;
void OnHeader(absl::string_view name, absl::string_view value) override;
void OnHeaderBlockEnd(size_t uncompressed_header_bytes,
size_t compressed_header_bytes) override;
void Clear();
const_iterator begin() const { return header_list_.begin(); }
const_iterator end() const { return header_list_.end(); }
bool empty() const { return header_list_.empty(); }
size_t uncompressed_header_bytes() const {
return uncompressed_header_bytes_;
size_t compressed_header_bytes() const { return compressed_header_bytes_; }
// Deprecated. TODO(b/145909215): remove.
void set_max_header_list_size(size_t max_header_list_size) {
max_header_list_size_ = max_header_list_size;
std::string DebugString() const;
quiche::QuicheCircularDeque<std::pair<std::string, std::string>> header_list_;
// The limit on the size of the header list (defined by spec as name + value +
// overhead for each header field). Headers over this limit will not be
// buffered, and the list will be cleared upon OnHeaderBlockEnd.
size_t max_header_list_size_;
// Defined per the spec as the size of all header fields with an additional
// overhead for each field.
size_t current_header_list_size_;
// TODO(dahollings) Are these fields necessary?
size_t uncompressed_header_bytes_;
size_t compressed_header_bytes_;
inline bool operator==(const QuicHeaderList& l1, const QuicHeaderList& l2) {
auto pred = [](const std::pair<std::string, std::string>& p1,
const std::pair<std::string, std::string>& p2) {
return p1.first == p2.first && p1.second == p2.second;
return std::equal(l1.begin(), l1.end(), l2.begin(), pred);
} // namespace quic