mirror of
https://github.com/transmission/transmission
synced 2024-12-26 09:37:56 +00:00
145 lines
3.4 KiB
C++
145 lines
3.4 KiB
C++
// This file Copyright © 2008-2022 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0), GPLv3 (SPDX: GPL-3.0),
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// or any future license endorsed by Mnemosyne LLC.
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// License text can be found in the licenses/ folder.
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#pragma once
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#ifndef __TRANSMISSION__
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#error only libtransmission should #include this header.
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#endif
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#include "transmission.h"
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#include "bitfield.h"
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#include "history.h"
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#include "interned-string.h"
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/**
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* @addtogroup peers Peers
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* @{
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*/
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class tr_peer;
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class tr_swarm;
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struct peer_atom;
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/* This is the maximum size of a block request.
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most bittorrent clients will reject requests
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larger than this size. */
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auto inline constexpr MAX_BLOCK_SIZE = 1024 * 16;
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/**
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*** Peer Publish / Subscribe
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**/
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enum PeerEventType
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{
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TR_PEER_CLIENT_GOT_BLOCK,
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TR_PEER_CLIENT_GOT_CHOKE,
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TR_PEER_CLIENT_GOT_PIECE_DATA,
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TR_PEER_CLIENT_GOT_ALLOWED_FAST,
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TR_PEER_CLIENT_GOT_SUGGEST,
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TR_PEER_CLIENT_GOT_PORT,
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TR_PEER_CLIENT_GOT_REJ,
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TR_PEER_CLIENT_GOT_BITFIELD,
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TR_PEER_CLIENT_GOT_HAVE,
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TR_PEER_CLIENT_GOT_HAVE_ALL,
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TR_PEER_CLIENT_GOT_HAVE_NONE,
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TR_PEER_PEER_GOT_PIECE_DATA,
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TR_PEER_ERROR
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};
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struct tr_peer_event
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{
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PeerEventType eventType;
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uint32_t pieceIndex; /* for GOT_BLOCK, GOT_HAVE, CANCEL, ALLOWED, SUGGEST */
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tr_bitfield* bitfield; /* for GOT_BITFIELD */
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uint32_t offset; /* for GOT_BLOCK */
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uint32_t length; /* for GOT_BLOCK + GOT_PIECE_DATA */
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int err; /* errno for GOT_ERROR */
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tr_port port; /* for GOT_PORT */
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};
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using tr_peer_callback = void (*)(tr_peer* peer, tr_peer_event const* event, void* client_data);
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/**
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* State information about a connected peer.
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*
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* @see struct peer_atom
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* @see tr_peerMsgs
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*/
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class tr_peer
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{
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public:
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tr_peer(tr_torrent const* tor, peer_atom* atom = nullptr);
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virtual ~tr_peer();
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virtual bool is_transferring_pieces(uint64_t now, tr_direction direction, unsigned int* setme_Bps) const = 0;
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/* whether or not we should free this peer soon.
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NOTE: private to peer-mgr.c */
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bool doPurge = false;
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/* number of bad pieces they've contributed to */
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uint8_t strikes = 0;
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/* how many requests the peer has made that we haven't responded to yet */
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int pendingReqsToClient = 0;
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tr_session* const session;
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/* Hook to private peer-mgr information */
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peer_atom* const atom;
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tr_swarm* const swarm;
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/** how complete the peer's copy of the torrent is. [0.0...1.0] */
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float progress = 0.0f;
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tr_bitfield blame;
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tr_bitfield have;
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/* the client name.
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For BitTorrent peers, this is the app name derived from the `v' string in LTEP's handshake dictionary */
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tr_interned_string client;
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tr_recentHistory blocksSentToClient;
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tr_recentHistory blocksSentToPeer;
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tr_recentHistory cancelsSentToClient;
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tr_recentHistory cancelsSentToPeer;
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};
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/** Update the tr_peer.progress field based on the 'have' bitset. */
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void tr_peerUpdateProgress(tr_torrent* tor, tr_peer*);
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bool tr_peerIsSeed(tr_peer const* peer);
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/***
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****
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***/
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struct tr_swarm_stats
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{
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int activePeerCount[2];
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int activeWebseedCount;
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int peerCount;
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int peerFromCount[TR_PEER_FROM__MAX];
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};
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void tr_swarmGetStats(tr_swarm const* swarm, tr_swarm_stats* setme);
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void tr_swarmIncrementActivePeers(tr_swarm* swarm, tr_direction direction, bool is_active);
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/***
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****
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***/
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#ifdef _WIN32
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#undef EMSGSIZE
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#define EMSGSIZE WSAEMSGSIZE
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#endif
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/** @} */
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