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79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_QUIC_CORE_QUIC_UTILS_H_
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#define NET_QUIC_CORE_QUIC_UTILS_H_
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#include <cstddef>
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#include <cstdint>
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#include <string>
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#include "base/macros.h"
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#include "net/base/int128.h"
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#include "net/base/iovec.h"
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#include "net/quic/core/quic_error_codes.h"
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#include "net/quic/core/quic_types.h"
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#include "net/quic/platform/api/quic_export.h"
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#include "net/quic/platform/api/quic_socket_address.h"
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#include "net/quic/platform/api/quic_string_piece.h"
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namespace net {
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class QUIC_EXPORT_PRIVATE QuicUtils {
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public:
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// Returns the 64 bit FNV1a hash of the data. See
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// http://www.isthe.com/chongo/tech/comp/fnv/index.html#FNV-param
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static uint64_t FNV1a_64_Hash(QuicStringPiece data);
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// Returns the 128 bit FNV1a hash of the data. See
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// http://www.isthe.com/chongo/tech/comp/fnv/index.html#FNV-param
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static uint128 FNV1a_128_Hash(QuicStringPiece data);
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// Returns the 128 bit FNV1a hash of the two sequences of data. See
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// http://www.isthe.com/chongo/tech/comp/fnv/index.html#FNV-param
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static uint128 FNV1a_128_Hash_Two(QuicStringPiece data1,
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QuicStringPiece data2);
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// Returns the 128 bit FNV1a hash of the three sequences of data. See
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// http://www.isthe.com/chongo/tech/comp/fnv/index.html#FNV-param
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static uint128 FNV1a_128_Hash_Three(QuicStringPiece data1,
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QuicStringPiece data2,
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QuicStringPiece data3);
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// SerializeUint128 writes the first 96 bits of |v| in little-endian form
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// to |out|.
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static void SerializeUint128Short(uint128 v, uint8_t* out);
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// Returns the level of encryption as a char*
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static const char* EncryptionLevelToString(EncryptionLevel level);
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// Returns TransmissionType as a char*
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static const char* TransmissionTypeToString(TransmissionType type);
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// Returns PeerAddressChangeType as a std::string.
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static std::string PeerAddressChangeTypeToString(PeerAddressChangeType type);
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// Determines and returns change type of address change from |old_address| to
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// |new_address|.
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static PeerAddressChangeType DetermineAddressChangeType(
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const QuicSocketAddress& old_address,
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const QuicSocketAddress& new_address);
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// Copies |buffer_length| bytes from iov starting at offset |iov_offset| into
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// buffer. |iov| must be at least iov_offset+length total length and buffer
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// must be at least |length| long.
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static void CopyToBuffer(const struct iovec* iov,
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int iov_count,
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size_t iov_offset,
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size_t buffer_length,
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char* buffer);
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private:
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DISALLOW_COPY_AND_ASSIGN(QuicUtils);
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};
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} // namespace net
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#endif // NET_QUIC_CORE_QUIC_UTILS_H_
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