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// Copyright (c) 2019 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 <cstddef>
#include <cstdint>
#include "absl/strings/string_view.h"
#include "absl/types/span.h"
#include "quiche/common/platform/api/quiche_export.h"
namespace quic {
// Incrementally compute an Internet header checksum as described in RFC 1071.
class QUICHE_EXPORT InternetChecksum {
// Update the checksum with the specified data. Note that while the checksum
// is commutative, the data has to be supplied in the units of two-byte words.
// If there is an extra byte at the end, the function has to be called on it
// last.
void Update(const char* data, size_t size);
void Update(const uint8_t* data, size_t size);
void Update(absl::string_view data);
void Update(absl::Span<const uint8_t> data);
uint16_t Value() const;
uint32_t accumulator_ = 0;
} // namespace quic