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https://github.com/YGGverse/aquatic.git
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udp: use idiomatic folder structure (lib.rs + main.rs in src)
This commit is contained in:
Joakim Frostegård
parent
b9bc5a2aa4
commit
aa3253fcd6
9 changed files with 0 additions and 1 deletions
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@ -1,405 +0,0 @@
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use std::collections::BTreeMap;
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use std::net::IpAddr;
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use std::net::Ipv4Addr;
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use std::net::Ipv6Addr;
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use std::net::SocketAddr;
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use std::sync::atomic::Ordering;
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use std::time::Duration;
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use std::time::Instant;
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use aquatic_common::ValidUntil;
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use crossbeam_channel::Receiver;
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use rand::{rngs::SmallRng, SeedableRng};
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use aquatic_common::extract_response_peers;
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use aquatic_udp_protocol::*;
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use crate::common::*;
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use crate::config::Config;
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#[derive(Clone, PartialEq, Debug)]
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pub struct ProtocolResponsePeer<I> {
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pub ip_address: I,
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pub port: Port,
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}
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impl<I: Ip> ProtocolResponsePeer<I> {
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#[inline(always)]
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fn from_peer(peer: &Peer<I>) -> Self {
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Self {
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ip_address: peer.ip_address,
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port: peer.port,
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}
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}
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}
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pub struct ProtocolAnnounceResponse<I> {
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pub transaction_id: TransactionId,
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pub announce_interval: AnnounceInterval,
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pub leechers: NumberOfPeers,
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pub seeders: NumberOfPeers,
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pub peers: Vec<ProtocolResponsePeer<I>>,
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}
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impl Into<ConnectedResponse> for ProtocolAnnounceResponse<Ipv4Addr> {
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fn into(self) -> ConnectedResponse {
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ConnectedResponse::AnnounceIpv4(AnnounceResponseIpv4 {
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transaction_id: self.transaction_id,
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announce_interval: self.announce_interval,
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leechers: self.leechers,
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seeders: self.seeders,
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peers: self
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.peers
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.into_iter()
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.map(|peer| ResponsePeerIpv4 {
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ip_address: peer.ip_address,
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port: peer.port,
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})
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.collect(),
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})
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}
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}
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impl Into<ConnectedResponse> for ProtocolAnnounceResponse<Ipv6Addr> {
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fn into(self) -> ConnectedResponse {
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ConnectedResponse::AnnounceIpv6(AnnounceResponseIpv6 {
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transaction_id: self.transaction_id,
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announce_interval: self.announce_interval,
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leechers: self.leechers,
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seeders: self.seeders,
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peers: self
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.peers
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.into_iter()
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.map(|peer| ResponsePeerIpv6 {
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ip_address: peer.ip_address,
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port: peer.port,
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})
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.collect(),
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})
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}
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}
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pub fn run_request_worker(
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config: Config,
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state: State,
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request_receiver: Receiver<(SocketWorkerIndex, ConnectedRequest, SocketAddr)>,
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response_sender: ConnectedResponseSender,
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worker_index: RequestWorkerIndex,
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) {
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let mut torrents = TorrentMaps::default();
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let mut small_rng = SmallRng::from_entropy();
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let timeout = Duration::from_millis(config.handlers.channel_recv_timeout_ms);
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let mut peer_valid_until = ValidUntil::new(config.cleaning.max_peer_age);
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let cleaning_interval = Duration::from_secs(config.cleaning.torrent_cleaning_interval);
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let statistics_update_interval = Duration::from_secs(config.statistics.interval);
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let mut last_cleaning = Instant::now();
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let mut last_statistics_update = Instant::now();
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let mut iter_counter = 0usize;
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loop {
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if let Ok((sender_index, request, src)) = request_receiver.recv_timeout(timeout) {
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let response = match request {
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ConnectedRequest::Announce(request) => handle_announce_request(
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&config,
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&mut small_rng,
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&mut torrents,
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request,
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src,
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peer_valid_until,
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),
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ConnectedRequest::Scrape(request) => {
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ConnectedResponse::Scrape(handle_scrape_request(&mut torrents, src, request))
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}
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};
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response_sender.try_send_to(sender_index, response, src);
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}
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if iter_counter % 128 == 0 {
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let now = Instant::now();
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peer_valid_until = ValidUntil::new_with_now(now, config.cleaning.max_peer_age);
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if now > last_cleaning + cleaning_interval {
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torrents.clean(&config, &state.access_list);
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if !statistics_update_interval.is_zero() {
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let peers_ipv4 = torrents.ipv4.values().map(|t| t.peers.len()).sum();
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let peers_ipv6 = torrents.ipv6.values().map(|t| t.peers.len()).sum();
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state.statistics_ipv4.peers[worker_index.0]
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.store(peers_ipv4, Ordering::Release);
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state.statistics_ipv6.peers[worker_index.0]
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.store(peers_ipv6, Ordering::Release);
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}
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last_cleaning = now;
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}
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if !statistics_update_interval.is_zero()
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&& now > last_statistics_update + statistics_update_interval
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{
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state.statistics_ipv4.torrents[worker_index.0]
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.store(torrents.ipv4.len(), Ordering::Release);
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state.statistics_ipv6.torrents[worker_index.0]
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.store(torrents.ipv6.len(), Ordering::Release);
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last_statistics_update = now;
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}
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}
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iter_counter = iter_counter.wrapping_add(1);
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}
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}
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pub fn handle_announce_request(
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config: &Config,
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rng: &mut SmallRng,
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torrents: &mut TorrentMaps,
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request: AnnounceRequest,
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src: SocketAddr,
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peer_valid_until: ValidUntil,
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) -> ConnectedResponse {
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match src.ip() {
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IpAddr::V4(ip) => handle_announce_request_inner(
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config,
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rng,
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&mut torrents.ipv4,
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request,
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ip,
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peer_valid_until,
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)
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.into(),
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IpAddr::V6(ip) => handle_announce_request_inner(
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config,
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rng,
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&mut torrents.ipv6,
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request,
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ip,
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peer_valid_until,
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)
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.into(),
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}
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}
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fn handle_announce_request_inner<I: Ip>(
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config: &Config,
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rng: &mut SmallRng,
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torrents: &mut TorrentMap<I>,
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request: AnnounceRequest,
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peer_ip: I,
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peer_valid_until: ValidUntil,
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) -> ProtocolAnnounceResponse<I> {
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let peer_status = PeerStatus::from_event_and_bytes_left(request.event, request.bytes_left);
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let peer = Peer {
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ip_address: peer_ip,
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port: request.port,
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status: peer_status,
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valid_until: peer_valid_until,
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};
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let torrent_data = torrents.entry(request.info_hash).or_default();
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let opt_removed_peer = match peer_status {
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PeerStatus::Leeching => {
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torrent_data.num_leechers += 1;
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torrent_data.peers.insert(request.peer_id, peer)
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}
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PeerStatus::Seeding => {
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torrent_data.num_seeders += 1;
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torrent_data.peers.insert(request.peer_id, peer)
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}
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PeerStatus::Stopped => torrent_data.peers.remove(&request.peer_id),
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};
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match opt_removed_peer.map(|peer| peer.status) {
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Some(PeerStatus::Leeching) => {
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torrent_data.num_leechers -= 1;
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}
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Some(PeerStatus::Seeding) => {
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torrent_data.num_seeders -= 1;
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}
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_ => {}
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}
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let max_num_peers_to_take = calc_max_num_peers_to_take(config, request.peers_wanted.0);
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let response_peers = extract_response_peers(
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rng,
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&torrent_data.peers,
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max_num_peers_to_take,
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request.peer_id,
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ProtocolResponsePeer::from_peer,
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);
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ProtocolAnnounceResponse {
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transaction_id: request.transaction_id,
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announce_interval: AnnounceInterval(config.protocol.peer_announce_interval),
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leechers: NumberOfPeers(torrent_data.num_leechers as i32),
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seeders: NumberOfPeers(torrent_data.num_seeders as i32),
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peers: response_peers,
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}
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}
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#[inline]
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fn calc_max_num_peers_to_take(config: &Config, peers_wanted: i32) -> usize {
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if peers_wanted <= 0 {
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config.protocol.max_response_peers as usize
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} else {
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::std::cmp::min(
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config.protocol.max_response_peers as usize,
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peers_wanted as usize,
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)
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}
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}
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pub fn handle_scrape_request(
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torrents: &mut TorrentMaps,
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src: SocketAddr,
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request: PendingScrapeRequest,
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) -> PendingScrapeResponse {
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const EMPTY_STATS: TorrentScrapeStatistics = create_torrent_scrape_statistics(0, 0);
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let mut torrent_stats: BTreeMap<usize, TorrentScrapeStatistics> = BTreeMap::new();
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if src.ip().is_ipv4() {
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torrent_stats.extend(request.info_hashes.into_iter().map(|(i, info_hash)| {
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let s = if let Some(torrent_data) = torrents.ipv4.get(&info_hash) {
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create_torrent_scrape_statistics(
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torrent_data.num_seeders as i32,
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torrent_data.num_leechers as i32,
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)
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} else {
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EMPTY_STATS
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};
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(i, s)
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}));
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} else {
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torrent_stats.extend(request.info_hashes.into_iter().map(|(i, info_hash)| {
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let s = if let Some(torrent_data) = torrents.ipv6.get(&info_hash) {
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create_torrent_scrape_statistics(
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torrent_data.num_seeders as i32,
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torrent_data.num_leechers as i32,
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)
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} else {
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EMPTY_STATS
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};
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(i, s)
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}));
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}
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PendingScrapeResponse {
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transaction_id: request.transaction_id,
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torrent_stats,
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}
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}
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#[inline(always)]
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const fn create_torrent_scrape_statistics(seeders: i32, leechers: i32) -> TorrentScrapeStatistics {
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TorrentScrapeStatistics {
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seeders: NumberOfPeers(seeders),
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completed: NumberOfDownloads(0), // No implementation planned
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leechers: NumberOfPeers(leechers),
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}
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}
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#[cfg(test)]
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mod tests {
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use std::collections::HashSet;
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use std::net::Ipv4Addr;
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use quickcheck::{quickcheck, TestResult};
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use rand::thread_rng;
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use super::*;
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fn gen_peer_id(i: u32) -> PeerId {
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let mut peer_id = PeerId([0; 20]);
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peer_id.0[0..4].copy_from_slice(&i.to_ne_bytes());
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peer_id
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}
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fn gen_peer(i: u32) -> Peer<Ipv4Addr> {
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Peer {
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ip_address: Ipv4Addr::from(i.to_be_bytes()),
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port: Port(1),
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status: PeerStatus::Leeching,
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valid_until: ValidUntil::new(0),
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}
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}
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#[test]
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fn test_extract_response_peers() {
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fn prop(data: (u16, u16)) -> TestResult {
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let gen_num_peers = data.0 as u32;
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let req_num_peers = data.1 as usize;
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let mut peer_map: PeerMap<Ipv4Addr> = Default::default();
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let mut opt_sender_key = None;
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let mut opt_sender_peer = None;
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for i in 0..gen_num_peers {
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let key = gen_peer_id(i);
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let peer = gen_peer((i << 16) + i);
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if i == 0 {
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opt_sender_key = Some(key);
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opt_sender_peer = Some(ProtocolResponsePeer::from_peer(&peer));
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}
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peer_map.insert(key, peer);
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}
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let mut rng = thread_rng();
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let peers = extract_response_peers(
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&mut rng,
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&peer_map,
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req_num_peers,
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opt_sender_key.unwrap_or_else(|| gen_peer_id(1)),
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ProtocolResponsePeer::from_peer,
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);
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// Check that number of returned peers is correct
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let mut success = peers.len() <= req_num_peers;
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if req_num_peers >= gen_num_peers as usize {
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success &= peers.len() == gen_num_peers as usize
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|| peers.len() + 1 == gen_num_peers as usize;
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}
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// Check that returned peers are unique (no overlap) and that sender
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// isn't returned
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let mut ip_addresses = HashSet::with_capacity(peers.len());
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for peer in peers {
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if peer == opt_sender_peer.clone().unwrap()
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|| ip_addresses.contains(&peer.ip_address)
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{
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success = false;
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break;
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}
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ip_addresses.insert(peer.ip_address);
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}
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TestResult::from_bool(success)
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}
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quickcheck(prop as fn((u16, u16)) -> TestResult);
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}
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}
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