#[derive(thiserror::Error, Debug)]

pub enum Error {

    pub fn unbound(self) -> Vec<T> {

        self.v

    }

}

impl<T, const N: usize> ops::Deref for BoundedVec<T, N> {

use std::io;

use std::marker::PhantomData;

use crate::service::message::Message;

use crate::wire;

///

/// Used to for example turn a byte stream into network messages.

#[derive(Debug)]

    item: PhantomData<D>,

}

    fn default() -> Self {

        Self::new(wire::Size::MAX as usize + 1)

    }

}

            unparsed,

            item: PhantomData,

    }

}

    /// Create a new stream decoder.

    pub fn new(capacity: usize) -> Self {

        Self {

            item: PhantomData,

        }

    }

    /// Input bytes into the decoder.

    }

    /// Decode and return the next message. Returns [`None`] if nothing was decoded.

    pub fn deserialize_next(&mut self) -> Result<Option<D>, wire::Error> {

        match D::decode(&mut reader) {

            Ok(msg) => {

    pub fn is_empty(&self) -> bool {

        self.unparsed.is_empty()

    }

}

    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {

        Ok(buf.len())

    }

    }

}

    type Item = Result<D, wire::Error>;

    fn next(&mut self) -> Option<Self::Item> {

    #[test]

    fn test_decode_next() {

        assert_matches!(decoder.deserialize_next(), Ok(None));

        assert_eq!(decoder.unparsed.len(), 2);

        assert_matches!(decoder.deserialize_next(), Ok(None));

        assert_eq!(decoder.unparsed.len(), 3);

        assert_matches!(decoder.deserialize_next(), Ok(Some(s)) if s.as_str() == "bye");

        assert_eq!(decoder.unparsed.len(), 0);

        assert!(decoder.is_empty());

    #[test]

    fn test_unparsed() {

        assert_eq!(decoder.unparsed().collect::<Vec<_>>(), vec![3, b'b', b'y']);

        assert!(decoder.is_empty());

    }

    fn prop_decode_next(chunk_size: usize) {

        let mut bytes = vec![];

        let mut msgs = vec![];

        let chunk_size = 1 + chunk_size % MSG_HELLO.len() + MSG_BYE.len();

        bytes.extend_from_slice(MSG_BYE);

        for chunk in bytes.as_slice().chunks(chunk_size) {

            while let Some(msg) = decoder.deserialize_next().unwrap() {

                msgs.push(msg);

use radicle::node::notifications;

use radicle::node::Handle as _;

use radicle::profile::Home;

use crate::control;

use crate::crypto::Signer;

        let network = config.network;

        let rng = fastrand::Rng::new();

        let clock = LocalTime::now();

        let storage = Storage::open(home.storage(), git::UserInfo { alias, key: id })?;

        let scope = config.scope;

        let policy = config.policy;

            );

            ann

        } else {

                .solve(Default::default())

                .expect("Runtime::init: unable to solve proof-of-work puzzle")

        };

        let emitter: Emitter<Event> = Default::default();

        let mut service = service::Service::new(

            config.clone(),

            stores,

            storage.clone(),

            policies,

use radicle::node::seed::Store as _;

use radicle::node::{ConnectOptions, Penalty, Severity};

use radicle::storage::refs::SIGREFS_BRANCH;

use crate::crypto;

use crate::crypto::{Signer, Verified};

    outbox: Outbox,

    /// Cached local node announcement.

    node: NodeAnnouncement,

    /// Source of entropy.

    rng: Rng,

    /// Ongoing fetches.

{

    pub fn new(

        config: Config,

        db: Stores<D>,

        storage: S,

        policies: policy::Config<Write>,

    ) -> Self {

        let sessions = Sessions::new(rng.clone());

        let limiter = RateLimiter::new(config.peers());

        Self {

            config,

            policies,

            signer,

            rng,

            node,

            clock,

            db,

            last_idle: LocalTime::default(),

            last_sync: LocalTime::default(),

            last_prune: LocalTime::default(),

            last_announce: LocalTime::default(),

            emitter,

            listening: vec![],

        }

        })

    }

    pub fn initialize(&mut self, time: LocalTime) -> Result<(), Error> {

        debug!(target: "service", "Init @{}", time.as_millis());

        let nid = self.node_id();

        self.started_at = Some(time);

        // Populate refs database. This is only useful as part of the upgrade process for nodes

        // that have been online since before the refs database was created.

        // Ensure that our inventory is recorded in our routing table, and we are seeding

        // all of it. It can happen that inventory is not properly seeded if for eg. the

        // user creates a new repository while the node is stopped.

        let announced = self

            .db

            .seeds()

            .seeded_by(&nid)?

            .collect::<Result<HashMap<_, _>, _>>()?;

            let repo = self.storage.repository(rid)?;

            // If we're not seeding this repo, just skip it.

            self.keep_alive(&now);

            self.disconnect_unresponsive_peers(&now);

            self.maintain_connections();

            self.outbox.wakeup(IDLE_INTERVAL);

            self.last_idle = now;

        if now - self.last_announce >= ANNOUNCE_INTERVAL {

            trace!(target: "service", "Running 'announce' task...");

                error!(target: "service", "Error announcing inventory: {err}");

            }

            self.outbox.wakeup(ANNOUNCE_INTERVAL);

                }

            }

            Command::AnnounceInventory => {

                    error!(target: "service", "Error announcing inventory: {err}");

                }

            }

        if self.sessions.inbound().count() >= self.config.limits.connection.inbound {

            return false;

        }

        let host: HostName = addr.into();

        if self.limiter.limit(

            if let Some(peer) = self.sessions.get_mut(&remote) {

                peer.to_connected(self.clock);

                self.outbox.write_all(peer, msgs);

            }

        } else {

            match self.sessions.entry(remote) {

                                    self.fetch(*id, *announcer, FETCH_TIMEOUT, None);

                                }

                                Err(e) => {

                                }

                            }

                        }

    /// Set of initial messages to send to a peer.

    fn initial(&mut self, _link: Link) -> Vec<Message> {

        let now = self.clock();

        let filter = self.filter();

        // TODO: Only subscribe to outbound connections, otherwise we will consume too

        // much bandwidth.

        vec![

            Message::node(self.node.clone(), &self.signer),

            Message::subscribe(filter, since, Timestamp::MAX),

        ]

    }

    /// Update our routing table with our local node's inventory.

    fn sync_inventory(&mut self) -> Result<SyncedRouting, Error> {

        let inventory = self.storage.inventory()?;

        Ok(result)

    }

            Ok(synced) => {

                // Only announce if our inventory changed.

                if synced.added.len() + synced.removed.len() > 0 {

                        error!(target: "service", "Failed to announce inventory: {e}");

                    }

                }

    ////////////////////////////////////////////////////////////////////////////

    /// Announce our inventory to all connected peers.

        self.outbox.announce(

            msg.signed(&self.signer),

            self.sessions.connected().map(|(_, p)| p),

            self.db.gossip_mut(),

        );

        Ok(())

    }

                // even if it's in a disconnected state. Those sessions are re-attempted automatically.

                let mut peers = entries

                    .filter(|entry| !entry.address.banned)

                    .filter(|entry| !self.sessions.contains_key(&entry.node))

                    .filter(|entry| !self.config.external_addresses.contains(&entry.address.addr))

                    .filter(|entry| &entry.node != self.nid())

        Ok(())

    }

    fn maintain_connections(&mut self) {

        let PeerConfig::Dynamic { target } = self.config.peers else {

            return;

    }

    fn announced(&mut self, nid: &NodeId, ann: &Announcement) -> Result<bool, Error> {

        let mut stmt = self.db.prepare(

            "INSERT INTO `announcements` (node, repo, type, message, signature, timestamp)

             VALUES (?1, ?2, ?3, ?4, ?5, ?6)

        }

    }

}

use crate::node::Severity;

use crate::service::message;

use crate::service::message::Message;

use crate::{Link, Timestamp};

pub use crate::node::{PingState, State};

#[derive(thiserror::Error, Debug, Clone, Copy)]

pub enum Error {

    /// The remote peer sent an invalid announcement timestamp,

    /// Connection attempts. For persistent peers, Tracks

    /// how many times we've attempted to connect. We reset this to zero

    attempts: usize,

    /// Source of entropy.

    rng: Rng,

                ping: PingState::default(),

                fetching: HashSet::default(),

                latencies: VecDeque::default(),

            },

            link: Link::Inbound,

            subscribe: None,

        matches!(self.state, State::Attempted { .. })

    }

    pub fn is_connected(&self) -> bool {

        self.state.is_connected()

    }

        self.attempts

    }

    /// Mark this session as fetching the given RID.

    ///

    /// # Panics

    }

    pub fn to_connected(&mut self, since: LocalTime) {

        self.last_active = since;

        let State::Attempted = &self.state else {

            ping: PingState::default(),

            fetching: HashSet::default(),

            latencies: VecDeque::default(),

        };

    }

    pub service: Service<S, G>,

    pub id: NodeId,

    pub ip: net::IpAddr,

    pub rng: fastrand::Rng,

    pub local_addr: net::SocketAddr,

    pub tempdir: tempfile::TempDir,

    S: WriteStorage + 'static,

    G: Signer + 'static,

{

    fn addr(&self) -> Address {

        self.address()

impl Peer<MockStorage, MockSigner> {

    pub fn new(name: &'static str, ip: impl Into<net::IpAddr>) -> Self {

    }

}

    S: WriteStorage + 'static,

{

    pub fn with_storage(name: &'static str, ip: impl Into<net::IpAddr>, storage: S) -> Self {

    }

}

        let id = *config.signer.public_key();

        let ip = ip.into();

        let local_addr = net::SocketAddr::new(ip, config.rng.u16(..));

        // Make sure the peer address is advertized.

        config.config.external_addresses.push(local_addr.into());

        }

        let emitter: Emitter<Event> = Default::default();

        let service = Service::new(

            config.config,

            config.db,

            storage,

            policies,

            id,

            ip,

            local_addr,

            rng: config.rng,

            initialized: false,

            tempdir: config.tmp,

        }

    }

    }

    pub fn restart(&mut self) {

            "{}: Restarting: id = {}, address = {}",

            self.name, self.id, self.ip

        );

    }

    pub fn address(&self) -> Address {

    pub fn connect_from(&mut self, peer: &Self) {

        let remote_id = simulator::Peer::<S, G>::id(peer);

        self.service

            .connected(remote_id, peer.address(), Link::Inbound);

        self.service

        let remote_id = simulator::Peer::<T, H>::id(peer);

        let remote_addr = simulator::Peer::<T, H>::addr(peer);

        self.service.command(Command::Connect(

            remote_id,

            remote_addr.clone(),

    // Only one connection attempt is made.

    assert_matches!(

        [Io::Connect(id, addr)]

        if *id == bob.id() && *addr == bob.addr()

    );

            },

            ..peer::Config::default()

        },

    let outbox = alice.outbox().collect::<Vec<_>>();

    outbox

#[test]

fn test_inventory_sync() {

    let tmp = tempfile::tempdir().unwrap();

        "alice",

        [7, 7, 7, 7],

        Storage::open(tmp.path().join("alice"), fixtures::user()).unwrap(),

    );

    let bob_signer = MockSigner::default();

    let bob_storage = fixtures::storage(tmp.path().join("bob"), &bob_signer).unwrap();

    let now = LocalTime::now().into();

    let projs = bob.storage().inventory().unwrap();

                },

                ..peer::Config::default()

            },

        let bob = Peer::config(

            "bob",

                local_time: alice.local_time(),

                ..peer::Config::default()

            },

        // Tell Alice about the amazing projects available

        alice.connect_to(&bob);

        Some(Message::Announcement(_))

    );

    assert!(

        alice.messages(eve.id()).next().is_none(),

        "Another inventory with the same timestamp is ignored"

    );

    bob.elapse(LocalDuration::from_mins(1));

    assert_matches!(

        alice.messages(eve.id()).next(),

        Some(Message::Announcement(_)),

#[test]

fn test_refs_announcement_relay() {

    let tmp = tempfile::tempdir().unwrap();

        "alice",

        [7, 7, 7, 7],

        Storage::open(tmp.path().join("alice"), fixtures::user()).unwrap(),

    );

        "eve",

        [8, 8, 8, 8],

        Storage::open(tmp.path().join("eve"), fixtures::user()).unwrap(),

    );

    let bob = {

                ..peer::Config::default()

            },

        )

    };

    let bob_inv = bob

        .storage()

    logger::init(log::Level::Debug);

    let tmp = tempfile::tempdir().unwrap();

        "alice",

        [7, 7, 7, 7],

        Storage::open(tmp.path().join("alice"), fixtures::user()).unwrap(),

    );

    let bob = {

        let mut rng = fastrand::Rng::new();

                ..peer::Config::default()

            },

        )

    };

    let bob_inv = bob.storage().inventory().unwrap();

    let rid = bob_inv.first().unwrap();

    bob.seed(rid, policy::Scope::All).unwrap();

    // Make sure alice's service wasn't initialized before.

    alice.connect_to(&bob);

    alice.receive(bob.id, Message::Subscribe(Subscribe::all()));

            },

            ..peer::Config::default()

        },

    let mut sim = Simulation::new(

        LocalTime::now(),

fn test_persistent_peer_reconnect_success() {

    use std::collections::HashSet;

    let mut alice = Peer::config(

        "alice",

        [7, 7, 7, 7],

            },

            ..peer::Config::default()

        },

    alice.connect_to(&bob);

    // A transient error such as this will cause Alice to attempt a reconnection.

    )

    .unwrap();

    let (repo, _) = fixtures::repository(tempdir.path().join("working"));

    let storage_bob =

        Storage::open(tempdir.path().join("bob").join("storage"), fixtures::user()).unwrap();

    let storage_eve =

        Storage::open(tempdir.path().join("eve").join("storage"), fixtures::user()).unwrap();

    remote::mock::register(&alice.node_id(), alice.storage().path());

    remote::mock::register(&eve.node_id(), eve.storage().path());

fn prop_inventory_exchange_dense() {

    fn property(alice_inv: MockStorage, bob_inv: MockStorage, eve_inv: MockStorage) {

        let rng = fastrand::Rng::new();

        let mut routing = RandomMap::with_hasher(rng.clone().into());

        for (inv, peer) in &[

    #[test]

    fn prop_message_decoder() {

        fn property(items: Vec<Message>) {

            for item in &items {

                item.encode(&mut decoder).unwrap();

/// Default time to wait when dialing a connection, before the remote is considered unreachable.

pub const DEFAULT_DIAL_TIMEOUT: time::Duration = time::Duration::from_secs(6);

/// Control message used internally between workers, users, and the service.

#[allow(clippy::large_enum_variant)]

#[derive(Debug)]

        addr: NetAddr<HostName>,

        link: Link,

        nid: NodeId,

        streams: Streams,

    },

    /// The peer was scheduled for disconnection. Once the transport is handed over

                    ..

                }) = self.peers.get_mut(&id)

                {

                    loop {

                        match inbox.deserialize_next() {

                                log::error!(target: "wire", "Invalid gossip message from {nid}: {e}");

                                if !inbox.is_empty() {

                                }

                                self.disconnect(

                                    id,

        // Encode gossip message using the varint-prefix format into the stream.

        varint::payload::encode(&gossip, &mut stream).unwrap();

        // The "pong" message decodes successfully, even though there is trailing data.

        assert_eq!(

/// Maximum length in bytes of a node alias.

pub const MAX_ALIAS_LENGTH: usize = 32;

/// Penalty threshold at which point we avoid connecting to this node.

/// Filename of node database under the node directory.

pub const NODE_DB_FILE: &str = "node.db";

/// Filename of policies database under the node directory.

        /// Measured latencies for this peer.

        #[serde(skip)]

        latencies: VecDeque<LocalDuration>,

    },

    /// When a peer is disconnected.

    #[serde(rename_all = "camelCase")]

impl Penalty {

    /// If the penalty threshold is reached, at which point we should just avoid

    /// connecting to this node.

    }

}

                ping: Default::default(),

                fetching: Default::default(),

                latencies: VecDeque::default(),

            }))

            .unwrap(),

        )

    pub timestamp: Timestamp,

    /// Node connection penalty.

    pub penalty: Penalty,

}

/// A known address.

    fn is_empty(&self) -> Result<bool, Error> {

        self.len().map(|l| l == 0)

    }

    /// Get the address entries in the store.

    fn entries(&self) -> Result<Box<dyn Iterator<Item = AddressEntry>>, Error>;

    /// Mark a node as attempted at a certain time.

impl Store for Database {

    fn get(&self, node: &NodeId) -> Result<Option<Node>, Error> {

        stmt.bind((1, node))?;

        if let Some(Ok(row)) = stmt.into_iter().next() {

            let pow = row.read::<i64, _>("pow") as u32;

            let penalty = row.read::<i64, _>("penalty").min(u8::MAX as i64);

            let penalty = Penalty(penalty as u8);

            let addrs = self.addresses_of(node)?;

            Ok(Some(Node {

                timestamp,

                penalty,

                addrs,

            }))

        } else {

            Ok(None)

        }

    }

    fn addresses_of(&self, node: &NodeId) -> Result<Vec<KnownAddress>, Error> {

        let mut addrs = Vec::new();

        let mut stmt = self.db.prepare(

        _addr: &Address,

        severity: Severity,

    ) -> Result<(), Error> {

    }

}

        let node = cache.get(&alice).unwrap().unwrap();

        assert_eq!(node.penalty, Penalty(4));

    }

}

use sqlite as sql;

/// Milliseconds since epoch.

#[serde(transparent)]

pub struct Timestamp(u64);

    project::Project,

    Did,

};

use crate::storage;

use crate::storage::refs::{Refs, RefsAt, SignedRefs};

use crate::test::storage::{MockRepository, MockStorage};

    }

}

impl Arbitrary for Alias {

    fn arbitrary(g: &mut qcheck::Gen) -> Self {

        let s = g