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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| use std::{ | ||
| task::{Context, Poll}, | ||
| time::Duration, | ||
| }; | ||
|
|
||
| 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; | ||
|
|
||
| use crate::{ | ||
| behaviour::Behaviour, | ||
| config::Config, | ||
| enr::{build_enr, keypair_to_combine, CombineKeyPubExt}, | ||
| }; | ||
|
|
||
| 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); | ||
| } | ||
| } | ||
|
|
||
| pub struct Network { | ||
| swarm: Swarm<Behaviour>, | ||
| } | ||
|
|
||
| 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()?; | ||
|
|
||
| let swarm = | ||
| SwarmBuilder::with_executor(transport, behaviour, peer_id, TokioExecutor).build(); | ||
| Ok(Self { swarm }) | ||
| } | ||
|
|
||
| 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)?; | ||
|
|
||
| // 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); | ||
|
|
||
| // yamux config | ||
| let mut yamux_config = libp2p::yamux::Config::default(); | ||
| yamux_config.set_window_update_mode(libp2p::yamux::WindowUpdateMode::on_read()); | ||
|
|
||
| // 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()) | ||
| } | ||
|
|
||
| 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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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| use std::net::TcpListener; | ||
| mod swarm; | ||
|
|
||
| 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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