use std::{cmp, mem};
use std::collections::{HashSet, HashMap, hash_map};
use std::sync::{Arc, RwLock};
-use std::net::SocketAddr;
+use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
use std::time::{Duration, Instant};
use std::io::{BufRead, BufReader};
use regex::Regex;
+use crate::bgp_client::BGPClient;
+
+pub const SECS_PER_SCAN_RESULTS: u64 = 15;
+const MAX_CONNS_PER_SEC_PER_STATUS: u64 = 30;
+
#[derive(Clone, Copy, Hash, PartialEq, Eq)]
pub enum AddressState {
Untested,
ProtocolViolation,
Timeout,
TimeoutDuringRequest,
+ TimeoutAwaitingPong,
+ TimeoutAwaitingAddr,
+ TimeoutAwaitingBlock,
Good,
WasGood,
+ EvilNode,
}
impl AddressState {
0x6 => Some(AddressState::ProtocolViolation),
0x7 => Some(AddressState::Timeout),
0x8 => Some(AddressState::TimeoutDuringRequest),
- 0x9 => Some(AddressState::Good),
- 0xa => Some(AddressState::WasGood),
+ 0x9 => Some(AddressState::TimeoutAwaitingPong),
+ 0xa => Some(AddressState::TimeoutAwaitingAddr),
+ 0xb => Some(AddressState::TimeoutAwaitingBlock),
+ 0xc => Some(AddressState::Good),
+ 0xd => Some(AddressState::WasGood),
+ 0xe => Some(AddressState::EvilNode),
_ => None,
}
}
AddressState::ProtocolViolation => 6,
AddressState::Timeout => 7,
AddressState::TimeoutDuringRequest => 8,
- AddressState::Good => 9,
- AddressState::WasGood => 10,
+ AddressState::TimeoutAwaitingPong => 9,
+ AddressState::TimeoutAwaitingAddr => 10,
+ AddressState::TimeoutAwaitingBlock => 11,
+ AddressState::Good => 12,
+ AddressState::WasGood => 13,
+ AddressState::EvilNode => 14,
}
}
AddressState::ProtocolViolation => "Protocol Violation",
AddressState::Timeout => "Timeout",
AddressState::TimeoutDuringRequest => "Timeout During Request",
+ AddressState::TimeoutAwaitingPong => "Timeout Awaiting Pong",
+ AddressState::TimeoutAwaitingAddr => "Timeout Awaiting Addr",
+ AddressState::TimeoutAwaitingBlock => "Timeout Awaiting Block",
AddressState::Good => "Good",
AddressState::WasGood => "Was Good",
+ AddressState::EvilNode => "Evil Node",
}
}
- pub fn get_count() -> u8 {
- 11
+ pub const fn get_count() -> u8 {
+ 15
}
}
#[derive(Hash, PartialEq, Eq)]
pub enum U64Setting {
- ConnsPerSec,
RunTimeout,
WasGoodTimeout,
RescanInterval(AddressState),
last_good: Instant, // Ignored unless state is Good or WasGood
last_services: u64,
state: AddressState,
+ queued: bool,
+}
+
+/// Essentially SocketAddr but without a traffic class or scope
+#[derive(Clone, PartialEq, Eq, Hash)]
+enum SockAddr {
+ V4(SocketAddrV4),
+ V6((Ipv6Addr, u16)),
+}
+impl From<SocketAddr> for SockAddr {
+ fn from(addr: SocketAddr) -> SockAddr {
+ match addr {
+ SocketAddr::V4(sa) => SockAddr::V4(sa),
+ SocketAddr::V6(sa) => SockAddr::V6((sa.ip().clone(), sa.port())),
+ }
+ }
+}
+impl Into<SocketAddr> for &SockAddr {
+ fn into(self) -> SocketAddr {
+ match self {
+ &SockAddr::V4(sa) => SocketAddr::V4(sa),
+ &SockAddr::V6(sa) => SocketAddr::V6(SocketAddrV6::new(sa.0, sa.1, 0, 0))
+ }
+ }
+}
+impl ToString for SockAddr {
+ fn to_string(&self) -> String {
+ let sa: SocketAddr = self.into();
+ sa.to_string()
+ }
+}
+impl SockAddr {
+ pub fn port(&self) -> u16 {
+ match *self {
+ SockAddr::V4(sa) => sa.port(),
+ SockAddr::V6((_, port)) => port,
+ }
+ }
+ pub fn ip(&self) -> IpAddr {
+ match *self {
+ SockAddr::V4(sa) => IpAddr::V4(sa.ip().clone()),
+ SockAddr::V6((ip, _)) => IpAddr::V6(ip),
+ }
+ }
}
struct Nodes {
- good_node_services: HashMap<u8, HashSet<SocketAddr>>,
- nodes_to_state: HashMap<SocketAddr, Node>,
- state_next_scan: Vec<Vec<(Instant, SocketAddr)>>,
+ good_node_services: [HashSet<SockAddr>; 64],
+ nodes_to_state: HashMap<SockAddr, Node>,
+ state_next_scan: Vec<Vec<SockAddr>>,
}
struct NodesMutRef<'a> {
- good_node_services: &'a mut HashMap<u8, HashSet<SocketAddr>>,
- nodes_to_state: &'a mut HashMap<SocketAddr, Node>,
- state_next_scan: &'a mut Vec<Vec<(Instant, SocketAddr)>>,
-
+ good_node_services: &'a mut [HashSet<SockAddr>; 64],
+ nodes_to_state: &'a mut HashMap<SockAddr, Node>,
+ state_next_scan: &'a mut Vec<Vec<SockAddr>>,
}
+
impl Nodes {
fn borrow_mut<'a>(&'a mut self) -> NodesMutRef<'a> {
NodesMutRef {
}
} }
}
- let mut u64s = HashMap::with_capacity(15);
- u64s.insert(U64Setting::ConnsPerSec, try_read!(l, u64));
+ let mut u64s = HashMap::with_capacity(AddressState::get_count() as usize + 4);
u64s.insert(U64Setting::RunTimeout, try_read!(l, u64));
u64s.insert(U64Setting::WasGoodTimeout, try_read!(l, u64));
u64s.insert(U64Setting::MinProtocolVersion, try_read!(l, u64));
u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), try_read!(l, u64));
u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), try_read!(l, u64));
u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), try_read!(l, u64));
+ u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), try_read!(l, u64));
+ u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), try_read!(l, u64));
+ u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), try_read!(l, u64));
u64s.insert(U64Setting::RescanInterval(AddressState::Good), try_read!(l, u64));
u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), try_read!(l, u64));
+ u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), try_read!(l, u64));
future::ok((u64s, try_read!(l, Regex)))
}).or_else(|_| -> future::FutureResult<(HashMap<U64Setting, u64>, Regex), ()> {
let mut u64s = HashMap::with_capacity(15);
- u64s.insert(U64Setting::ConnsPerSec, 10);
u64s.insert(U64Setting::RunTimeout, 120);
u64s.insert(U64Setting::WasGoodTimeout, 21600);
- u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 0);
+ u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 1);
u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), 3600);
u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), 7200);
u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), 21600);
u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), 86400);
u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), 86400);
u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), 21600);
+ u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), 3600);
+ u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), 1800);
+ u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), 3600);
u64s.insert(U64Setting::RescanInterval(AddressState::Good), 1800);
u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), 1800);
- u64s.insert(U64Setting::MinProtocolVersion, 10000); //XXX
+ u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), 315360000);
+ u64s.insert(U64Setting::MinProtocolVersion, 70002);
future::ok((u64s, Regex::new(".*").unwrap()))
});
for _ in 0..AddressState::get_count() {
state_vecs.push(Vec::new());
}
- let mut good_node_services = HashMap::with_capacity(64);
- for i in 0..64 {
- good_node_services.insert(i, HashSet::new());
- }
+ let good_node_services = [HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new()];
Nodes {
good_node_services,
nodes_to_state: HashMap::new(),
last_services,
last_update: Instant::now(),
last_good: Instant::now(),
+ queued: true,
};
if node.state == AddressState::Good {
for i in 0..64 {
if node.last_services & (1 << i) != 0 {
- res.good_node_services.get_mut(&i).unwrap().insert(sockaddr);
+ res.good_node_services[i].insert(sockaddr.into());
}
}
}
- res.state_next_scan[node.state.to_num() as usize].push((Instant::now(), sockaddr));
- res.nodes_to_state.insert(sockaddr, node);
+ res.state_next_scan[node.state.to_num() as usize].push(sockaddr.into());
+ res.nodes_to_state.insert(sockaddr.into(), node);
}
future::ok(res)
}).or_else(|_| -> future::FutureResult<Nodes, ()> {
let mut nodes = self.nodes.write().unwrap();
let cur_time = Instant::now();
for addr in addresses {
- match nodes.nodes_to_state.entry(addr.clone()) {
+ match nodes.nodes_to_state.entry(addr.into()) {
hash_map::Entry::Vacant(e) => {
e.insert(Node {
state: AddressState::Untested,
last_services: 0,
last_update: cur_time,
last_good: cur_time,
+ queued: true,
});
- nodes.state_next_scan[AddressState::Untested.to_num() as usize].push((cur_time, addr));
+ nodes.state_next_scan[AddressState::Untested.to_num() as usize].push(addr.into());
res += 1;
},
hash_map::Entry::Occupied(_) => {},
}));
}
- pub fn set_node_state(&self, addr: SocketAddr, state: AddressState, services: u64) -> AddressState {
+ pub fn set_node_state(&self, sockaddr: SocketAddr, state: AddressState, services: u64) -> AddressState {
+ let addr: SockAddr = sockaddr.into();
+ let now = Instant::now();
+
let mut nodes_lock = self.nodes.write().unwrap();
let nodes = nodes_lock.borrow_mut();
- let now = Instant::now();
- let state_ref = nodes.nodes_to_state.entry(addr).or_insert(Node {
+ let state_ref = nodes.nodes_to_state.entry(addr.clone()).or_insert(Node {
state: AddressState::Untested,
last_services: 0,
last_update: now,
last_good: now,
+ queued: false,
});
let ret = state_ref.state;
if (state_ref.state == AddressState::Good || state_ref.state == AddressState::WasGood)
state_ref.state = AddressState::WasGood;
for i in 0..64 {
if state_ref.last_services & (1 << i) != 0 {
- nodes.good_node_services.get_mut(&i).unwrap().remove(&addr);
+ nodes.good_node_services[i].remove(&addr);
}
}
state_ref.last_services = 0;
- nodes.state_next_scan[AddressState::WasGood.to_num() as usize].push((now, addr));
+ if !state_ref.queued {
+ nodes.state_next_scan[AddressState::WasGood.to_num() as usize].push(addr);
+ state_ref.queued = true;
+ }
} else {
state_ref.state = state;
if state == AddressState::Good {
for i in 0..64 {
if services & (1 << i) != 0 && state_ref.last_services & (1 << i) == 0 {
- nodes.good_node_services.get_mut(&i).unwrap().insert(addr);
+ nodes.good_node_services[i].insert(addr.clone());
} else if services & (1 << i) == 0 && state_ref.last_services & (1 << i) != 0 {
- nodes.good_node_services.get_mut(&i).unwrap().remove(&addr);
+ nodes.good_node_services[i].remove(&addr);
}
}
state_ref.last_services = services;
state_ref.last_good = now;
}
- nodes.state_next_scan[state.to_num() as usize].push((now, addr));
+ if !state_ref.queued {
+ nodes.state_next_scan[state.to_num() as usize].push(addr);
+ state_ref.queued = true;
+ }
}
state_ref.last_update = now;
ret
pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
let settings_file = self.store.clone() + "/settings";
let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
- let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
- self.get_u64(U64Setting::ConnsPerSec),
+ let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
self.get_u64(U64Setting::RunTimeout),
self.get_u64(U64Setting::WasGoodTimeout),
self.get_u64(U64Setting::MinProtocolVersion),
self.get_u64(U64Setting::RescanInterval(AddressState::ProtocolViolation)),
self.get_u64(U64Setting::RescanInterval(AddressState::Timeout)),
self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock)),
self.get_u64(U64Setting::RescanInterval(AddressState::Good)),
self.get_u64(U64Setting::RescanInterval(AddressState::WasGood)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::EvilNode)),
self.get_regex(RegexSetting::SubverRegex).as_str());
write_all(f, settings_string).and_then(|(mut f, _)| {
f.poll_sync_all()
tokio::fs::rename(nodes_file.clone() + ".tmp", nodes_file)
});
+ settings_future.join(nodes_future).then(|_| { future::ok(()) })
+ }
+
+ pub fn write_dns(&'static self, bgp_client: Arc<BGPClient>) -> impl Future<Item=(), Error=()> {
let dns_file = self.store.clone() + "/nodes.dump";
- let dns_future = File::create(dns_file.clone() + ".tmp").and_then(move |f| {
+ File::create(dns_file.clone() + ".tmp").and_then(move |f| {
let mut dns_buff = String::new();
{
- let nodes = self.nodes.read().unwrap();
let mut rng = thread_rng();
- for i in &[1u64, 4, 5, 8, 9, 12, 13, 1024, 1025, 1028, 1029, 1032, 1033, 1036, 1037] {
- let mut v6_set = Vec::new();
- let mut v4_set = Vec::new();
- if i.count_ones() == 1 {
- for j in 0..64 {
- if i & (1 << j) != 0 {
- let set_ref = nodes.good_node_services.get(&j).unwrap();
- v4_set = set_ref.iter().filter(|e| e.is_ipv4() && e.port() == 8333)
- .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
- v6_set = set_ref.iter().filter(|e| e.is_ipv6() && e.port() == 8333)
- .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
- break;
- }
+ for i in &[ 0b00000000001u64,
+ 0b00000000100,
+ 0b00000000101,
+ 0b00000001000,
+ 0b00000001001,
+ 0b00000001100,
+ 0b00000001101,
+ 0b00001001001,
+ 0b10000000000,
+ 0b10000000001,
+ 0b10000000100,
+ 0b10000000101,
+ 0b10000001000,
+ 0b10000001001,
+ 0b10000001100,
+ 0b10000001101,
+ 0b10001001000] {
+ // ^ NODE_NETWORK_LIIMTED
+ //COMPACT_FILTERS ^ ^ NODE_BLOOM
+ // NODE_WITNESS ^ ^ NODE_NETWORK
+ // We support all combos of NETWORK, NETWORK_LIMITED, BLOOM, and WITNESS
+ // We support COMPACT_FILTERS with WITNESS and NETWORK or NETWORK_LIIMTED.
+ let mut tor_set: Vec<Ipv6Addr> = Vec::new();
+ let mut v6_set: Vec<Ipv6Addr> = Vec::new();
+ let mut v4_set: Vec<Ipv4Addr> = Vec::new();
+ macro_rules! add_addr { ($addr: expr) => {
+ match $addr.ip() {
+ IpAddr::V4(v4addr) => v4_set.push(v4addr),
+ IpAddr::V6(v6addr) if v6addr.octets()[..6] == [0xFD,0x87,0xD8,0x7E,0xEB,0x43][..] => tor_set.push(v6addr),
+ IpAddr::V6(v6addr) => v6_set.push(v6addr),
}
- } else if i.count_ones() == 2 {
- let mut first_set = None;
- let mut second_set = None;
- for j in 0..64 {
- if i & (1 << j) != 0 {
- if first_set == None {
- first_set = Some(nodes.good_node_services.get(&j).unwrap());
- } else {
- second_set = Some(nodes.good_node_services.get(&j).unwrap());
+ } }
+ {
+ let nodes = self.nodes.read().unwrap();
+ if i.count_ones() == 1 {
+ for j in 0..64 {
+ if i & (1 << j) != 0 {
+ let set_ref = &nodes.good_node_services[j];
+ for a in set_ref.iter().filter(|e| e.port() == 8333) {
+ add_addr!(a);
+ }
break;
}
}
- }
- v4_set = first_set.unwrap().intersection(second_set.unwrap())
- .filter(|e| e.is_ipv4() && e.port() == 8333)
- .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
- v6_set = first_set.unwrap().intersection(second_set.unwrap())
- .filter(|e| e.is_ipv6() && e.port() == 8333)
- .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
- } else {
- //TODO: Could optimize this one a bit
- let mut intersection;
- let mut intersection_set_ref = None;
- for j in 0..64 {
- if i & (1 << j) != 0 {
- if intersection_set_ref == None {
- intersection_set_ref = Some(nodes.good_node_services.get(&j).unwrap());
- } else {
- let new_intersection = intersection_set_ref.unwrap()
- .intersection(nodes.good_node_services.get(&j).unwrap()).map(|e| (*e).clone()).collect();
- intersection = Some(new_intersection);
- intersection_set_ref = Some(intersection.as_ref().unwrap());
+ } else if i.count_ones() == 2 {
+ let mut first_set = None;
+ let mut second_set = None;
+ for j in 0..64 {
+ if i & (1 << j) != 0 {
+ if first_set == None {
+ first_set = Some(&nodes.good_node_services[j]);
+ } else {
+ second_set = Some(&nodes.good_node_services[j]);
+ break;
+ }
}
}
+ for a in first_set.unwrap().intersection(&second_set.unwrap()).filter(|e| e.port() == 8333) {
+ add_addr!(a);
+ }
+ } else {
+ //TODO: Could optimize this one a bit
+ let mut intersection;
+ let mut intersection_set_ref = None;
+ for j in 0..64 {
+ if i & (1 << j) != 0 {
+ if intersection_set_ref == None {
+ intersection_set_ref = Some(&nodes.good_node_services[j]);
+ } else {
+ let new_intersection = intersection_set_ref.unwrap()
+ .intersection(&nodes.good_node_services[j]).map(|e| (*e).clone()).collect();
+ intersection = Some(new_intersection);
+ intersection_set_ref = Some(intersection.as_ref().unwrap());
+ }
+ }
+ }
+ for a in intersection_set_ref.unwrap().iter().filter(|e| e.port() == 8333) {
+ add_addr!(a);
+ }
}
- v4_set = intersection_set_ref.unwrap().iter()
- .filter(|e| e.is_ipv4() && e.port() == 8333)
- .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
- v6_set = intersection_set_ref.unwrap().iter()
- .filter(|e| e.is_ipv6() && e.port() == 8333)
- .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
}
- for a in v4_set {
+ let mut asn_set = HashSet::with_capacity(cmp::max(v4_set.len(), v6_set.len()));
+ asn_set.insert(0);
+ for a in v4_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(IpAddr::V4(**a)))).choose_multiple(&mut rng, 21) {
dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
}
- for a in v6_set {
+ asn_set.clear();
+ asn_set.insert(0);
+ for a in v6_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(IpAddr::V6(**a)))).choose_multiple(&mut rng, 10) {
+ dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
+ }
+ for a in tor_set.iter().choose_multiple(&mut rng, 2) {
dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
}
}
f.poll_sync_all()
}).and_then(|_| {
tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
- });
-
- settings_future.join3(nodes_future, dns_future).then(|_| { future::ok(()) })
+ }).then(|_| { future::ok(()) })
}
pub fn get_next_scan_nodes(&self) -> Vec<SocketAddr> {
- let results = 30 * self.get_u64(U64Setting::ConnsPerSec) as usize;
- let per_bucket_results = results / (AddressState::get_count() as usize);
- let mut res = Vec::with_capacity(results);
- let cur_time = Instant::now();
-
- let mut nodes = self.nodes.write().unwrap();
- for (idx, state_nodes) in nodes.state_next_scan.iter_mut().enumerate() {
- let cmp_time = cur_time - Duration::from_secs(self.get_u64(U64Setting::RescanInterval(AddressState::from_num(idx as u8).unwrap())));
- let split_point = cmp::min(cmp::min(results - res.len(), results - (per_bucket_results * (AddressState::get_count() as usize - idx))),
- state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx));
- let mut new_nodes = state_nodes.split_off(split_point);
- mem::swap(&mut new_nodes, state_nodes);
- for (_, node) in new_nodes.drain(..) {
- res.push(node);
+ let mut res = Vec::with_capacity(128);
+
+ {
+ let mut nodes_lock = self.nodes.write().unwrap();
+ let nodes = nodes_lock.borrow_mut();
+ for (idx, state_nodes) in nodes.state_next_scan.iter_mut().enumerate() {
+ let rescan_interval = cmp::max(self.get_u64(U64Setting::RescanInterval(AddressState::from_num(idx as u8).unwrap())), 1);
+ let split_point = cmp::min(cmp::min(SECS_PER_SCAN_RESULTS * state_nodes.len() as u64 / rescan_interval,
+ SECS_PER_SCAN_RESULTS * MAX_CONNS_PER_SEC_PER_STATUS),
+ state_nodes.len() as u64);
+ let mut new_nodes = state_nodes.split_off(split_point as usize);
+ mem::swap(&mut new_nodes, state_nodes);
+ for node in new_nodes.drain(..) {
+ nodes.nodes_to_state.get_mut(&node).unwrap().queued = false;
+ res.push((&node).into());
+ }
}
}
res.shuffle(&mut thread_rng());