mirror of
https://github.com/transmission/transmission
synced 2024-12-30 19:46:56 +00:00
160 lines
3.9 KiB
C++
160 lines
3.9 KiB
C++
// This file Copyright © 2008-2022 Mnemosyne LLC.
|
|
// It may be used under GPLv2 (SPDX: GPL-2.0), GPLv3 (SPDX: GPL-3.0),
|
|
// or any future license endorsed by Mnemosyne LLC.
|
|
// License text can be found in the licenses/ folder.
|
|
|
|
#pragma once
|
|
|
|
#ifndef __TRANSMISSION__
|
|
#error only libtransmission should #include this header.
|
|
#endif
|
|
|
|
#include <array>
|
|
#include <cstdint> // uint8_t, uint32_t, uint64_t
|
|
|
|
#include "transmission.h"
|
|
|
|
#include "bitfield.h"
|
|
#include "history.h"
|
|
#include "interned-string.h"
|
|
#include "net.h" // tr_port
|
|
|
|
/**
|
|
* @addtogroup peers Peers
|
|
* @{
|
|
*/
|
|
|
|
class tr_peer;
|
|
class tr_swarm;
|
|
struct peer_atom;
|
|
struct tr_bandwidth;
|
|
|
|
/**
|
|
*** Peer Publish / Subscribe
|
|
**/
|
|
|
|
enum PeerEventType
|
|
{
|
|
TR_PEER_CLIENT_GOT_BLOCK,
|
|
TR_PEER_CLIENT_GOT_CHOKE,
|
|
TR_PEER_CLIENT_GOT_PIECE_DATA,
|
|
TR_PEER_CLIENT_GOT_ALLOWED_FAST,
|
|
TR_PEER_CLIENT_GOT_SUGGEST,
|
|
TR_PEER_CLIENT_GOT_PORT,
|
|
TR_PEER_CLIENT_GOT_REJ,
|
|
TR_PEER_CLIENT_GOT_BITFIELD,
|
|
TR_PEER_CLIENT_GOT_HAVE,
|
|
TR_PEER_CLIENT_GOT_HAVE_ALL,
|
|
TR_PEER_CLIENT_GOT_HAVE_NONE,
|
|
TR_PEER_PEER_GOT_PIECE_DATA,
|
|
TR_PEER_ERROR
|
|
};
|
|
|
|
struct tr_peer_event
|
|
{
|
|
PeerEventType eventType;
|
|
|
|
uint32_t pieceIndex; /* for GOT_BLOCK, GOT_HAVE, CANCEL, ALLOWED, SUGGEST */
|
|
tr_bitfield* bitfield; /* for GOT_BITFIELD */
|
|
uint32_t offset; /* for GOT_BLOCK */
|
|
uint32_t length; /* for GOT_BLOCK + GOT_PIECE_DATA */
|
|
int err; /* errno for GOT_ERROR */
|
|
tr_port port; /* for GOT_PORT */
|
|
};
|
|
|
|
using tr_peer_callback = void (*)(tr_peer* peer, tr_peer_event const* event, void* client_data);
|
|
|
|
/**
|
|
* State information about a connected peer.
|
|
*
|
|
* @see struct peer_atom
|
|
* @see tr_peerMsgs
|
|
*/
|
|
class tr_peer
|
|
{
|
|
public:
|
|
tr_peer(tr_torrent const* tor, peer_atom* atom = nullptr);
|
|
virtual ~tr_peer();
|
|
|
|
virtual bool isTransferringPieces(uint64_t now, tr_direction direction, unsigned int* setme_Bps) const = 0;
|
|
|
|
[[nodiscard]] virtual std::string readable() const = 0;
|
|
|
|
[[nodiscard]] virtual bool hasPiece(tr_piece_index_t piece) const noexcept = 0;
|
|
|
|
[[nodiscard]] virtual tr_bandwidth& bandwidth() noexcept = 0;
|
|
|
|
// requests that have been made but haven't been fulfilled yet
|
|
[[nodiscard]] virtual size_t activeReqCount(tr_direction) const noexcept = 0;
|
|
|
|
virtual void requestBlocks(tr_block_span_t const* block_spans, size_t n_spans) = 0;
|
|
|
|
struct RequestLimit
|
|
{
|
|
// How many blocks we could request.
|
|
size_t max_spans = 0;
|
|
|
|
// How many spans those blocks could be in.
|
|
// This is for webseeds, which make parallel requests.
|
|
size_t max_blocks = 0;
|
|
};
|
|
|
|
// how many blocks could we request from this peer right now?
|
|
[[nodiscard]] virtual RequestLimit canRequest() const noexcept = 0;
|
|
|
|
tr_session* const session;
|
|
|
|
tr_swarm* const swarm;
|
|
|
|
tr_recentHistory<uint16_t> blocks_sent_to_peer;
|
|
|
|
tr_recentHistory<uint16_t> cancels_sent_to_client;
|
|
|
|
/// The following fields are only to be used in peer-mgr.cc.
|
|
/// TODO(ckerr): refactor them out of tr_peer
|
|
|
|
// hook to private peer-mgr information
|
|
peer_atom* const atom;
|
|
|
|
// whether or not this peer sent us any given block
|
|
tr_bitfield blame;
|
|
|
|
// whether or not we should free this peer soon.
|
|
bool do_purge = false;
|
|
|
|
// how many bad pieces this piece has contributed to
|
|
uint8_t strikes = 0;
|
|
|
|
// how many blocks this peer has sent us
|
|
tr_recentHistory<uint16_t> blocks_sent_to_client;
|
|
|
|
// how many requests we made to this peer and then canceled
|
|
tr_recentHistory<uint16_t> cancels_sent_to_peer;
|
|
};
|
|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
struct tr_swarm_stats
|
|
{
|
|
std::array<uint16_t, 2> active_peer_count;
|
|
uint16_t active_webseed_count;
|
|
uint16_t peer_count;
|
|
std::array<uint16_t, TR_PEER_FROM__MAX> peer_from_count;
|
|
};
|
|
|
|
tr_swarm_stats tr_swarmGetStats(tr_swarm const* swarm);
|
|
|
|
void tr_swarmIncrementActivePeers(tr_swarm* swarm, tr_direction direction, bool is_active);
|
|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
#ifdef _WIN32
|
|
#undef EMSGSIZE
|
|
#define EMSGSIZE WSAEMSGSIZE
|
|
#endif
|
|
|
|
/** @} */
|