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Original file line number | Diff line number | Diff line change |
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use std::{ | ||
task::{Context, Poll}, | ||
time::Duration, | ||
}; | ||
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use discv5::enr::CombinedKey; | ||
use libp2p::{ | ||
core::{muxing::StreamMuxerBox, transport::Boxed, upgrade}, | ||
futures::StreamExt, | ||
identity::Keypair, | ||
noise, | ||
swarm::SwarmBuilder, | ||
PeerId, Swarm, Transport, | ||
}; | ||
use tracing::info; | ||
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use crate::{ | ||
behaviour::Behaviour, | ||
config::Config, | ||
enr::{build_enr, keypair_to_combine, CombineKeyPubExt}, | ||
}; | ||
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struct TokioExecutor; | ||
impl libp2p::swarm::Executor for TokioExecutor { | ||
fn exec(&self, future: std::pin::Pin<Box<dyn std::future::Future<Output = ()> + Send>>) { | ||
tokio::spawn(future); | ||
} | ||
} | ||
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pub struct Network { | ||
swarm: Swarm<Behaviour>, | ||
} | ||
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impl Network { | ||
pub fn new(key: Keypair, config: Config) -> anyhow::Result<Self> { | ||
let transport = Self::build_transport(key.clone())?; | ||
let combine_key = keypair_to_combine(key)?; | ||
let enr = build_enr(&combine_key, &config)?; | ||
let behaviour = Behaviour::new(combine_key, config)?; | ||
let peer_id = enr.public_key().to_peer_id()?; | ||
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let swarm = | ||
SwarmBuilder::with_executor(transport, behaviour, peer_id, TokioExecutor).build(); | ||
Ok(Self { swarm }) | ||
} | ||
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fn build_transport(private_key: Keypair) -> std::io::Result<Boxed<(PeerId, StreamMuxerBox)>> { | ||
let tcp = libp2p::tcp::tokio::Transport::new(libp2p::tcp::Config::default().nodelay(true)); | ||
let transport = libp2p::dns::TokioDnsConfig::system(tcp)?; | ||
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// mplex config | ||
let mut mplex_config = libp2p::mplex::MplexConfig::new(); | ||
mplex_config.set_max_buffer_size(256); | ||
mplex_config.set_max_buffer_behaviour(libp2p::mplex::MaxBufferBehaviour::Block); | ||
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// yamux config | ||
let mut yamux_config = libp2p::yamux::Config::default(); | ||
yamux_config.set_window_update_mode(libp2p::yamux::WindowUpdateMode::on_read()); | ||
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// noise config | ||
let noise_config = noise::Config::new(&private_key) | ||
.expect("signing can fail only once during starting a node"); | ||
// Authentication | ||
Ok(transport | ||
.upgrade(upgrade::Version::V1) | ||
.authenticate(noise_config) | ||
.multiplex(upgrade::SelectUpgrade::new(yamux_config, mplex_config)) | ||
.timeout(Duration::from_secs(10)) | ||
.boxed()) | ||
} | ||
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pub fn poll_network(&mut self, cx: &mut Context) -> Poll<()> { | ||
while let Poll::Ready(Some(swarm_event)) = self.swarm.poll_next_unpin(cx) { | ||
info!("Swarm event: {:?}", swarm_event); | ||
// match swarm_event{ | ||
// libp2p::swarm::SwarmEvent::Behaviour(_) => todo!(), | ||
// libp2p::swarm::SwarmEvent::ConnectionEstablished { peer_id, endpoint, num_established, concurrent_dial_errors, established_in } => todo!(), | ||
// libp2p::swarm::SwarmEvent::ConnectionClosed { peer_id, endpoint, num_established, cause } => todo!(), | ||
// libp2p::swarm::SwarmEvent::IncomingConnection { local_addr, send_back_addr } => todo!(), | ||
// libp2p::swarm::SwarmEvent::IncomingConnectionError { local_addr, send_back_addr, error } => todo!(), | ||
// libp2p::swarm::SwarmEvent::OutgoingConnectionError { peer_id, error } => todo!(), | ||
// libp2p::swarm::SwarmEvent::BannedPeer { peer_id, endpoint } => todo!(), | ||
// libp2p::swarm::SwarmEvent::NewListenAddr { listener_id, address } => todo!(), | ||
// libp2p::swarm::SwarmEvent::ExpiredListenAddr { listener_id, address } => todo!(), | ||
// libp2p::swarm::SwarmEvent::ListenerClosed { listener_id, addresses, reason } => todo!(), | ||
// libp2p::swarm::SwarmEvent::ListenerError { listener_id, error } => todo!(), | ||
// libp2p::swarm::SwarmEvent::Dialing(_) => todo!(), | ||
// } | ||
} | ||
Poll::Pending | ||
} | ||
} |
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use std::net::TcpListener; | ||
mod swarm; | ||
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pub fn get_available_port() -> Option<u16> { | ||
let unused_port: u16; | ||
loop { | ||
let socket_addr = std::net::SocketAddr::new(std::net::Ipv4Addr::LOCALHOST.into(), 0); | ||
match TcpListener::bind(socket_addr) { | ||
Ok(listener) => match listener.local_addr().map(|s| s.port()) { | ||
Ok(p) => { | ||
unused_port = p; | ||
break; | ||
} | ||
Err(_) => {} | ||
}, | ||
Err(_) => {} | ||
} | ||
} | ||
Some(unused_port) | ||
} |
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