mirror of
https://github.com/YGGverse/aquatic.git
synced 2026-03-31 09:45:31 +00:00
udp load test: refactor worker
This commit is contained in:
Joakim Frostegård
parent
1e9b5c450c
commit
d48deeff8c
3 changed files with 288 additions and 340 deletions
|
|
@ -84,7 +84,7 @@ pub fn run(config: Config) -> ::anyhow::Result<()> {
|
|||
WorkerIndex::SocketWorker(i as usize),
|
||||
);
|
||||
|
||||
run_worker_thread(state, gamma, &config, addr)
|
||||
Worker::run(state, gamma, config, addr)
|
||||
})?;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,5 +1,3 @@
|
|||
mod request_gen;
|
||||
|
||||
use std::io::Cursor;
|
||||
use std::net::SocketAddr;
|
||||
use std::sync::atomic::Ordering;
|
||||
|
|
@ -8,87 +6,75 @@ use std::time::Duration;
|
|||
use mio::{net::UdpSocket, Events, Interest, Poll, Token};
|
||||
use rand::Rng;
|
||||
use rand::{prelude::SmallRng, SeedableRng};
|
||||
use rand_distr::Gamma;
|
||||
use rand_distr::{Distribution, Gamma, WeightedIndex};
|
||||
use socket2::{Domain, Protocol, Socket, Type};
|
||||
|
||||
use aquatic_udp_protocol::*;
|
||||
|
||||
use crate::config::Config;
|
||||
use crate::{common::*, utils::*};
|
||||
use request_gen::process_response;
|
||||
|
||||
const MAX_PACKET_SIZE: usize = 8192;
|
||||
|
||||
pub fn run_worker_thread(
|
||||
state: LoadTestState,
|
||||
pub struct Worker {
|
||||
config: Config,
|
||||
shared_state: LoadTestState,
|
||||
gamma: Gamma<f64>,
|
||||
config: &Config,
|
||||
addr: SocketAddr,
|
||||
) {
|
||||
let mut socket = UdpSocket::from_std(create_socket(config, addr));
|
||||
let mut buffer = [0u8; MAX_PACKET_SIZE];
|
||||
socket: UdpSocket,
|
||||
buffer: [u8; MAX_PACKET_SIZE],
|
||||
rng: SmallRng,
|
||||
torrent_peers: TorrentPeerMap,
|
||||
statistics: SocketWorkerLocalStatistics,
|
||||
}
|
||||
|
||||
let mut rng = SmallRng::seed_from_u64(0xc3aa8be617b3acce);
|
||||
let mut torrent_peers = TorrentPeerMap::default();
|
||||
impl Worker {
|
||||
pub fn run(shared_state: LoadTestState, gamma: Gamma<f64>, config: Config, addr: SocketAddr) {
|
||||
let socket = UdpSocket::from_std(create_socket(&config, addr));
|
||||
let buffer = [0u8; MAX_PACKET_SIZE];
|
||||
let rng = SmallRng::seed_from_u64(0xc3aa8be617b3acce);
|
||||
let torrent_peers = TorrentPeerMap::default();
|
||||
let statistics = SocketWorkerLocalStatistics::default();
|
||||
|
||||
let token = Token(0);
|
||||
let interests = Interest::READABLE;
|
||||
let timeout = Duration::from_micros(config.network.poll_timeout);
|
||||
let mut instance = Self {
|
||||
config,
|
||||
shared_state,
|
||||
gamma,
|
||||
addr,
|
||||
socket,
|
||||
buffer,
|
||||
rng,
|
||||
torrent_peers,
|
||||
statistics,
|
||||
};
|
||||
|
||||
instance.run_inner();
|
||||
}
|
||||
|
||||
fn run_inner(&mut self) {
|
||||
let mut poll = Poll::new().expect("create poll");
|
||||
|
||||
poll.registry()
|
||||
.register(&mut socket, token, interests)
|
||||
.unwrap();
|
||||
|
||||
let mut events = Events::with_capacity(1);
|
||||
|
||||
let mut statistics = SocketWorkerLocalStatistics::default();
|
||||
poll.registry()
|
||||
.register(&mut self.socket, Token(0), Interest::READABLE)
|
||||
.unwrap();
|
||||
|
||||
// Bootstrap request cycle
|
||||
let initial_request = create_connect_request(generate_transaction_id(&mut rng));
|
||||
send_request(&mut socket, &mut buffer, &mut statistics, initial_request);
|
||||
let initial_request = create_connect_request(generate_transaction_id(&mut self.rng));
|
||||
self.send_request(initial_request);
|
||||
|
||||
let timeout = Duration::from_micros(self.config.network.poll_timeout);
|
||||
|
||||
loop {
|
||||
poll.poll(&mut events, Some(timeout))
|
||||
.expect("failed polling");
|
||||
|
||||
for event in events.iter() {
|
||||
if (event.token() == token) & event.is_readable() {
|
||||
while let Ok(amt) = socket.recv(&mut buffer) {
|
||||
match Response::from_bytes(&buffer[0..amt], addr.is_ipv4()) {
|
||||
for _ in events.iter() {
|
||||
while let Ok(amt) = self.socket.recv(&mut self.buffer) {
|
||||
match Response::from_bytes(&self.buffer[0..amt], self.addr.is_ipv4()) {
|
||||
Ok(response) => {
|
||||
match response {
|
||||
Response::AnnounceIpv4(ref r) => {
|
||||
statistics.responses_announce += 1;
|
||||
statistics.response_peers += r.peers.len();
|
||||
}
|
||||
Response::AnnounceIpv6(ref r) => {
|
||||
statistics.responses_announce += 1;
|
||||
statistics.response_peers += r.peers.len();
|
||||
}
|
||||
Response::Scrape(_) => {
|
||||
statistics.responses_scrape += 1;
|
||||
}
|
||||
Response::Connect(_) => {
|
||||
statistics.responses_connect += 1;
|
||||
}
|
||||
Response::Error(_) => {
|
||||
statistics.responses_error += 1;
|
||||
}
|
||||
}
|
||||
|
||||
let opt_request = process_response(
|
||||
&mut rng,
|
||||
gamma,
|
||||
&state.info_hashes,
|
||||
&config,
|
||||
&mut torrent_peers,
|
||||
response,
|
||||
);
|
||||
|
||||
if let Some(request) = opt_request {
|
||||
send_request(&mut socket, &mut buffer, &mut statistics, request);
|
||||
if let Some(request) = self.process_response(response) {
|
||||
self.send_request(request);
|
||||
}
|
||||
}
|
||||
Err(err) => {
|
||||
|
|
@ -97,40 +83,219 @@ pub fn run_worker_thread(
|
|||
}
|
||||
}
|
||||
|
||||
if rng.gen::<f32>() <= config.requests.additional_request_probability {
|
||||
if self.rng.gen::<f32>() <= self.config.requests.additional_request_probability {
|
||||
let additional_request =
|
||||
create_connect_request(generate_transaction_id(&mut rng));
|
||||
create_connect_request(generate_transaction_id(&mut self.rng));
|
||||
|
||||
send_request(
|
||||
&mut socket,
|
||||
&mut buffer,
|
||||
&mut statistics,
|
||||
additional_request,
|
||||
self.send_request(additional_request);
|
||||
}
|
||||
|
||||
self.update_shared_statistics();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn process_response(&mut self, response: Response) -> Option<Request> {
|
||||
match response {
|
||||
Response::Connect(r) => {
|
||||
self.statistics.responses_connect += 1;
|
||||
|
||||
// Fetch the torrent peer or create it if is doesn't exists. Update
|
||||
// the connection id if fetched. Create a request and move the
|
||||
// torrent peer appropriately.
|
||||
|
||||
let mut torrent_peer = self
|
||||
.torrent_peers
|
||||
.remove(&r.transaction_id)
|
||||
.unwrap_or_else(|| self.create_torrent_peer(r.connection_id));
|
||||
|
||||
torrent_peer.connection_id = r.connection_id;
|
||||
|
||||
let new_transaction_id = generate_transaction_id(&mut self.rng);
|
||||
let request = self.create_random_request(new_transaction_id, &torrent_peer);
|
||||
|
||||
self.torrent_peers.insert(new_transaction_id, torrent_peer);
|
||||
|
||||
Some(request)
|
||||
}
|
||||
Response::AnnounceIpv4(r) => {
|
||||
self.statistics.responses_announce += 1;
|
||||
self.statistics.response_peers += r.peers.len();
|
||||
|
||||
self.if_torrent_peer_move_and_create_random_request(r.fixed.transaction_id)
|
||||
}
|
||||
Response::AnnounceIpv6(r) => {
|
||||
self.statistics.responses_announce += 1;
|
||||
self.statistics.response_peers += r.peers.len();
|
||||
|
||||
self.if_torrent_peer_move_and_create_random_request(r.fixed.transaction_id)
|
||||
}
|
||||
Response::Scrape(r) => {
|
||||
self.statistics.responses_scrape += 1;
|
||||
|
||||
self.if_torrent_peer_move_and_create_random_request(r.transaction_id)
|
||||
}
|
||||
Response::Error(r) => {
|
||||
self.statistics.responses_error += 1;
|
||||
|
||||
if !r.message.to_lowercase().contains("connection") {
|
||||
eprintln!(
|
||||
"Received error response which didn't contain the word 'connection': {}",
|
||||
r.message
|
||||
);
|
||||
}
|
||||
|
||||
update_shared_statistics(&state, &mut statistics);
|
||||
if let Some(torrent_peer) = self.torrent_peers.remove(&r.transaction_id) {
|
||||
let new_transaction_id = generate_transaction_id(&mut self.rng);
|
||||
|
||||
self.torrent_peers.insert(new_transaction_id, torrent_peer);
|
||||
|
||||
Some(create_connect_request(new_transaction_id))
|
||||
} else {
|
||||
Some(create_connect_request(generate_transaction_id(
|
||||
&mut self.rng,
|
||||
)))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn send_request(
|
||||
socket: &mut UdpSocket,
|
||||
buffer: &mut [u8],
|
||||
statistics: &mut SocketWorkerLocalStatistics,
|
||||
request: Request,
|
||||
) {
|
||||
let mut cursor = Cursor::new(buffer);
|
||||
fn if_torrent_peer_move_and_create_random_request(
|
||||
&mut self,
|
||||
transaction_id: TransactionId,
|
||||
) -> Option<Request> {
|
||||
let torrent_peer = self.torrent_peers.remove(&transaction_id)?;
|
||||
|
||||
let new_transaction_id = generate_transaction_id(&mut self.rng);
|
||||
|
||||
let request = self.create_random_request(new_transaction_id, &torrent_peer);
|
||||
|
||||
self.torrent_peers.insert(new_transaction_id, torrent_peer);
|
||||
|
||||
Some(request)
|
||||
}
|
||||
|
||||
fn create_torrent_peer(&mut self, connection_id: ConnectionId) -> TorrentPeer {
|
||||
let num_scrape_hashes = self
|
||||
.rng
|
||||
.gen_range(1..self.config.requests.scrape_max_torrents);
|
||||
|
||||
let scrape_hash_indices = (0..num_scrape_hashes)
|
||||
.map(|_| self.random_info_hash_index())
|
||||
.collect::<Vec<_>>()
|
||||
.into_boxed_slice();
|
||||
|
||||
let info_hash_index = self.random_info_hash_index();
|
||||
|
||||
TorrentPeer {
|
||||
info_hash: self.shared_state.info_hashes[info_hash_index],
|
||||
scrape_hash_indices,
|
||||
connection_id,
|
||||
peer_id: generate_peer_id(),
|
||||
port: Port::new(self.rng.gen()),
|
||||
}
|
||||
}
|
||||
|
||||
fn create_random_request(
|
||||
&mut self,
|
||||
transaction_id: TransactionId,
|
||||
torrent_peer: &TorrentPeer,
|
||||
) -> Request {
|
||||
const ITEMS: [RequestType; 3] = [
|
||||
RequestType::Announce,
|
||||
RequestType::Connect,
|
||||
RequestType::Scrape,
|
||||
];
|
||||
|
||||
let weights = [
|
||||
self.config.requests.weight_announce as u32,
|
||||
self.config.requests.weight_connect as u32,
|
||||
self.config.requests.weight_scrape as u32,
|
||||
];
|
||||
|
||||
let dist = WeightedIndex::new(weights).expect("random request weighted index");
|
||||
|
||||
match ITEMS[dist.sample(&mut self.rng)] {
|
||||
RequestType::Announce => self.create_announce_request(torrent_peer, transaction_id),
|
||||
RequestType::Connect => (ConnectRequest { transaction_id }).into(),
|
||||
RequestType::Scrape => self.create_scrape_request(torrent_peer, transaction_id),
|
||||
}
|
||||
}
|
||||
|
||||
fn create_announce_request(
|
||||
&mut self,
|
||||
torrent_peer: &TorrentPeer,
|
||||
transaction_id: TransactionId,
|
||||
) -> Request {
|
||||
let (event, bytes_left) = {
|
||||
if self
|
||||
.rng
|
||||
.gen_bool(self.config.requests.peer_seeder_probability)
|
||||
{
|
||||
(AnnounceEvent::Completed, NumberOfBytes::new(0))
|
||||
} else {
|
||||
(AnnounceEvent::Started, NumberOfBytes::new(50))
|
||||
}
|
||||
};
|
||||
|
||||
(AnnounceRequest {
|
||||
connection_id: torrent_peer.connection_id,
|
||||
action_placeholder: Default::default(),
|
||||
transaction_id,
|
||||
info_hash: torrent_peer.info_hash,
|
||||
peer_id: torrent_peer.peer_id,
|
||||
bytes_downloaded: NumberOfBytes::new(50),
|
||||
bytes_uploaded: NumberOfBytes::new(50),
|
||||
bytes_left,
|
||||
event: event.into(),
|
||||
ip_address: Ipv4AddrBytes([0; 4]),
|
||||
key: PeerKey::new(0),
|
||||
peers_wanted: NumberOfPeers::new(self.config.requests.announce_peers_wanted),
|
||||
port: torrent_peer.port,
|
||||
})
|
||||
.into()
|
||||
}
|
||||
|
||||
fn create_scrape_request(
|
||||
&self,
|
||||
torrent_peer: &TorrentPeer,
|
||||
transaction_id: TransactionId,
|
||||
) -> Request {
|
||||
let indeces = &torrent_peer.scrape_hash_indices;
|
||||
|
||||
let mut scape_hashes = Vec::with_capacity(indeces.len());
|
||||
|
||||
for i in indeces.iter() {
|
||||
scape_hashes.push(self.shared_state.info_hashes[*i].to_owned())
|
||||
}
|
||||
|
||||
(ScrapeRequest {
|
||||
connection_id: torrent_peer.connection_id,
|
||||
transaction_id,
|
||||
info_hashes: scape_hashes,
|
||||
})
|
||||
.into()
|
||||
}
|
||||
|
||||
fn random_info_hash_index(&mut self) -> usize {
|
||||
gamma_usize(
|
||||
&mut self.rng,
|
||||
self.gamma,
|
||||
&self.config.requests.number_of_torrents - 1,
|
||||
)
|
||||
}
|
||||
|
||||
fn send_request(&mut self, request: Request) {
|
||||
let mut cursor = Cursor::new(self.buffer);
|
||||
|
||||
match request.write(&mut cursor) {
|
||||
Ok(()) => {
|
||||
let position = cursor.position() as usize;
|
||||
let inner = cursor.get_ref();
|
||||
|
||||
match socket.send(&inner[..position]) {
|
||||
match self.socket.send(&inner[..position]) {
|
||||
Ok(_) => {
|
||||
statistics.requests += 1;
|
||||
self.statistics.requests += 1;
|
||||
}
|
||||
Err(err) => {
|
||||
eprintln!("Couldn't send packet: {:?}", err);
|
||||
|
|
@ -143,33 +308,34 @@ fn send_request(
|
|||
}
|
||||
}
|
||||
|
||||
fn update_shared_statistics(state: &LoadTestState, statistics: &mut SocketWorkerLocalStatistics) {
|
||||
state
|
||||
fn update_shared_statistics(&mut self) {
|
||||
self.shared_state
|
||||
.statistics
|
||||
.requests
|
||||
.fetch_add(statistics.requests, Ordering::Relaxed);
|
||||
state
|
||||
.fetch_add(self.statistics.requests, Ordering::Relaxed);
|
||||
self.shared_state
|
||||
.statistics
|
||||
.responses_connect
|
||||
.fetch_add(statistics.responses_connect, Ordering::Relaxed);
|
||||
state
|
||||
.fetch_add(self.statistics.responses_connect, Ordering::Relaxed);
|
||||
self.shared_state
|
||||
.statistics
|
||||
.responses_announce
|
||||
.fetch_add(statistics.responses_announce, Ordering::Relaxed);
|
||||
state
|
||||
.fetch_add(self.statistics.responses_announce, Ordering::Relaxed);
|
||||
self.shared_state
|
||||
.statistics
|
||||
.responses_scrape
|
||||
.fetch_add(statistics.responses_scrape, Ordering::Relaxed);
|
||||
state
|
||||
.fetch_add(self.statistics.responses_scrape, Ordering::Relaxed);
|
||||
self.shared_state
|
||||
.statistics
|
||||
.responses_error
|
||||
.fetch_add(statistics.responses_error, Ordering::Relaxed);
|
||||
state
|
||||
.fetch_add(self.statistics.responses_error, Ordering::Relaxed);
|
||||
self.shared_state
|
||||
.statistics
|
||||
.response_peers
|
||||
.fetch_add(statistics.response_peers, Ordering::Relaxed);
|
||||
.fetch_add(self.statistics.response_peers, Ordering::Relaxed);
|
||||
|
||||
*statistics = SocketWorkerLocalStatistics::default();
|
||||
self.statistics = SocketWorkerLocalStatistics::default();
|
||||
}
|
||||
}
|
||||
|
||||
fn create_socket(config: &Config, addr: SocketAddr) -> ::std::net::UdpSocket {
|
||||
|
|
|
|||
|
|
@ -1,218 +0,0 @@
|
|||
use std::sync::Arc;
|
||||
|
||||
use rand::distributions::WeightedIndex;
|
||||
use rand::prelude::*;
|
||||
use rand_distr::Gamma;
|
||||
|
||||
use aquatic_udp_protocol::*;
|
||||
|
||||
use crate::common::*;
|
||||
use crate::config::Config;
|
||||
use crate::utils::*;
|
||||
|
||||
pub fn process_response(
|
||||
rng: &mut impl Rng,
|
||||
gamma: Gamma<f64>,
|
||||
info_hashes: &Arc<[InfoHash]>,
|
||||
config: &Config,
|
||||
torrent_peers: &mut TorrentPeerMap,
|
||||
response: Response,
|
||||
) -> Option<Request> {
|
||||
match response {
|
||||
Response::Connect(r) => {
|
||||
// Fetch the torrent peer or create it if is doesn't exists. Update
|
||||
// the connection id if fetched. Create a request and move the
|
||||
// torrent peer appropriately.
|
||||
|
||||
let torrent_peer = torrent_peers
|
||||
.remove(&r.transaction_id)
|
||||
.map(|mut torrent_peer| {
|
||||
torrent_peer.connection_id = r.connection_id;
|
||||
|
||||
torrent_peer
|
||||
})
|
||||
.unwrap_or_else(|| {
|
||||
create_torrent_peer(config, rng, gamma, info_hashes, r.connection_id)
|
||||
});
|
||||
|
||||
let new_transaction_id = generate_transaction_id(rng);
|
||||
|
||||
let request =
|
||||
create_random_request(config, rng, info_hashes, new_transaction_id, &torrent_peer);
|
||||
|
||||
torrent_peers.insert(new_transaction_id, torrent_peer);
|
||||
|
||||
Some(request)
|
||||
}
|
||||
Response::AnnounceIpv4(r) => if_torrent_peer_move_and_create_random_request(
|
||||
config,
|
||||
rng,
|
||||
info_hashes,
|
||||
torrent_peers,
|
||||
r.fixed.transaction_id,
|
||||
),
|
||||
Response::AnnounceIpv6(r) => if_torrent_peer_move_and_create_random_request(
|
||||
config,
|
||||
rng,
|
||||
info_hashes,
|
||||
torrent_peers,
|
||||
r.fixed.transaction_id,
|
||||
),
|
||||
Response::Scrape(r) => if_torrent_peer_move_and_create_random_request(
|
||||
config,
|
||||
rng,
|
||||
info_hashes,
|
||||
torrent_peers,
|
||||
r.transaction_id,
|
||||
),
|
||||
Response::Error(r) => {
|
||||
if !r.message.to_lowercase().contains("connection") {
|
||||
eprintln!(
|
||||
"Received error response which didn't contain the word 'connection': {}",
|
||||
r.message
|
||||
);
|
||||
}
|
||||
|
||||
if let Some(torrent_peer) = torrent_peers.remove(&r.transaction_id) {
|
||||
let new_transaction_id = generate_transaction_id(rng);
|
||||
|
||||
torrent_peers.insert(new_transaction_id, torrent_peer);
|
||||
|
||||
Some(create_connect_request(new_transaction_id))
|
||||
} else {
|
||||
Some(create_connect_request(generate_transaction_id(rng)))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn if_torrent_peer_move_and_create_random_request(
|
||||
config: &Config,
|
||||
rng: &mut impl Rng,
|
||||
info_hashes: &Arc<[InfoHash]>,
|
||||
torrent_peers: &mut TorrentPeerMap,
|
||||
transaction_id: TransactionId,
|
||||
) -> Option<Request> {
|
||||
if let Some(torrent_peer) = torrent_peers.remove(&transaction_id) {
|
||||
let new_transaction_id = generate_transaction_id(rng);
|
||||
|
||||
let request =
|
||||
create_random_request(config, rng, info_hashes, new_transaction_id, &torrent_peer);
|
||||
|
||||
torrent_peers.insert(new_transaction_id, torrent_peer);
|
||||
|
||||
Some(request)
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
fn create_random_request(
|
||||
config: &Config,
|
||||
rng: &mut impl Rng,
|
||||
info_hashes: &Arc<[InfoHash]>,
|
||||
transaction_id: TransactionId,
|
||||
torrent_peer: &TorrentPeer,
|
||||
) -> Request {
|
||||
const ITEMS: [RequestType; 3] = [
|
||||
RequestType::Announce,
|
||||
RequestType::Connect,
|
||||
RequestType::Scrape,
|
||||
];
|
||||
|
||||
let weights = [
|
||||
config.requests.weight_announce as u32,
|
||||
config.requests.weight_connect as u32,
|
||||
config.requests.weight_scrape as u32,
|
||||
];
|
||||
|
||||
let dist = WeightedIndex::new(weights).expect("random request weighted index");
|
||||
|
||||
match ITEMS[dist.sample(rng)] {
|
||||
RequestType::Announce => create_announce_request(config, rng, torrent_peer, transaction_id),
|
||||
RequestType::Connect => create_connect_request(transaction_id),
|
||||
RequestType::Scrape => create_scrape_request(&info_hashes, torrent_peer, transaction_id),
|
||||
}
|
||||
}
|
||||
|
||||
fn create_announce_request(
|
||||
config: &Config,
|
||||
rng: &mut impl Rng,
|
||||
torrent_peer: &TorrentPeer,
|
||||
transaction_id: TransactionId,
|
||||
) -> Request {
|
||||
let (event, bytes_left) = {
|
||||
if rng.gen_bool(config.requests.peer_seeder_probability) {
|
||||
(AnnounceEvent::Completed, NumberOfBytes::new(0))
|
||||
} else {
|
||||
(AnnounceEvent::Started, NumberOfBytes::new(50))
|
||||
}
|
||||
};
|
||||
|
||||
(AnnounceRequest {
|
||||
connection_id: torrent_peer.connection_id,
|
||||
action_placeholder: Default::default(),
|
||||
transaction_id,
|
||||
info_hash: torrent_peer.info_hash,
|
||||
peer_id: torrent_peer.peer_id,
|
||||
bytes_downloaded: NumberOfBytes::new(50),
|
||||
bytes_uploaded: NumberOfBytes::new(50),
|
||||
bytes_left,
|
||||
event: event.into(),
|
||||
ip_address: Ipv4AddrBytes([0; 4]),
|
||||
key: PeerKey::new(0),
|
||||
peers_wanted: NumberOfPeers::new(config.requests.announce_peers_wanted),
|
||||
port: torrent_peer.port,
|
||||
})
|
||||
.into()
|
||||
}
|
||||
|
||||
fn create_scrape_request(
|
||||
info_hashes: &Arc<[InfoHash]>,
|
||||
torrent_peer: &TorrentPeer,
|
||||
transaction_id: TransactionId,
|
||||
) -> Request {
|
||||
let indeces = &torrent_peer.scrape_hash_indices;
|
||||
|
||||
let mut scape_hashes = Vec::with_capacity(indeces.len());
|
||||
|
||||
for i in indeces.iter() {
|
||||
scape_hashes.push(info_hashes[*i].to_owned())
|
||||
}
|
||||
|
||||
(ScrapeRequest {
|
||||
connection_id: torrent_peer.connection_id,
|
||||
transaction_id,
|
||||
info_hashes: scape_hashes,
|
||||
})
|
||||
.into()
|
||||
}
|
||||
|
||||
fn create_torrent_peer(
|
||||
config: &Config,
|
||||
rng: &mut impl Rng,
|
||||
gamma: Gamma<f64>,
|
||||
info_hashes: &Arc<[InfoHash]>,
|
||||
connection_id: ConnectionId,
|
||||
) -> TorrentPeer {
|
||||
let num_scrape_hashes = rng.gen_range(1..config.requests.scrape_max_torrents);
|
||||
|
||||
let scrape_hash_indices = (0..num_scrape_hashes)
|
||||
.map(|_| select_info_hash_index(config, rng, gamma))
|
||||
.collect::<Vec<_>>()
|
||||
.into_boxed_slice();
|
||||
|
||||
let info_hash_index = select_info_hash_index(config, rng, gamma);
|
||||
|
||||
TorrentPeer {
|
||||
info_hash: info_hashes[info_hash_index],
|
||||
scrape_hash_indices,
|
||||
connection_id,
|
||||
peer_id: generate_peer_id(),
|
||||
port: Port::new(rng.gen()),
|
||||
}
|
||||
}
|
||||
|
||||
fn select_info_hash_index(config: &Config, rng: &mut impl Rng, gamma: Gamma<f64>) -> usize {
|
||||
gamma_usize(rng, gamma, config.requests.number_of_torrents - 1)
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue