transmission/libtransmission/torrent-magnet.h

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// This file Copyright © 2012-2023 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
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#pragma once
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#ifndef __TRANSMISSION__
#error only libtransmission should #include this header.
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#endif
#include <cstddef> // size_t
#include <cstdint> // int64_t
#include <ctime> // time_t
#include <deque>
#include <optional>
#include <vector>
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#include <small/vector.hpp>
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struct tr_error;
struct tr_torrent;
struct tr_torrent_metainfo;
// defined by BEP #9
inline constexpr int MetadataPieceSize = 1024 * 16;
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using tr_metadata_piece = small::max_size_vector<std::byte, MetadataPieceSize>;
struct tr_incomplete_metadata
{
struct metadata_node
{
time_t requested_at = 0U;
int piece = 0;
};
std::vector<char> metadata;
/** sorted from least to most recently requested */
std::deque<metadata_node> pieces_needed;
int piece_count = 0;
};
bool tr_torrentGetMetadataPiece(tr_torrent const* tor, int piece, tr_metadata_piece& setme);
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void tr_torrentSetMetadataPiece(tr_torrent* tor, int piece, void const* data, size_t len);
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std::optional<int> tr_torrentGetNextMetadataRequest(tr_torrent* tor, time_t now);
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bool tr_torrentSetMetadataSizeHint(tr_torrent* tor, int64_t metadata_size);
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double tr_torrentGetMetadataPercent(tr_torrent const* tor);
void tr_torrentMagnetDoIdleWork(tr_torrent* tor);
bool tr_torrentUseMetainfoFromFile(
tr_torrent* tor,
tr_torrent_metainfo const* metainfo,
char const* filename,
tr_error** error);