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// Copyright 2021 COMIT Network.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#![doc = include_str!("../README.md")]
use futures::StreamExt;
use libp2p::{
identify, noise, ping, rendezvous,
swarm::{NetworkBehaviour, SwarmEvent},
tcp, yamux,
};
use std::error::Error;
use std::time::Duration;
use tracing_subscriber::EnvFilter;
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();
// Results in PeerID 12D3KooWDpJ7As7BWAwRMfu1VU2WCqNjvq387JEYKDBj4kx6nXTN which is
// used as the rendezvous point by the other peer examples.
let keypair = libp2p::identity::Keypair::ed25519_from_bytes([0; 32]).unwrap();
let mut swarm = libp2p::SwarmBuilder::with_existing_identity(keypair)
.with_tokio()
.with_tcp(
tcp::Config::default(),
noise::Config::new,
yamux::Config::default,
)?
.with_behaviour(|key| MyBehaviour {
identify: identify::Behaviour::new(identify::Config::new(
"rendezvous-example/1.0.0".to_string(),
key.public(),
)),
rendezvous: rendezvous::server::Behaviour::new(rendezvous::server::Config::default()),
ping: ping::Behaviour::new(ping::Config::new().with_interval(Duration::from_secs(1))),
})?
.with_swarm_config(|cfg| cfg.with_idle_connection_timeout(Duration::from_secs(5)))
.build();
let _ = swarm.listen_on("/ip4/0.0.0.0/tcp/62649".parse().unwrap());
while let Some(event) = swarm.next().await {
match event {
SwarmEvent::ConnectionEstablished { peer_id, .. } => {
tracing::info!("Connected to {}", peer_id);
}
SwarmEvent::ConnectionClosed { peer_id, .. } => {
tracing::info!("Disconnected from {}", peer_id);
}
SwarmEvent::Behaviour(MyBehaviourEvent::Rendezvous(
rendezvous::server::Event::PeerRegistered { peer, registration },
)) => {
tracing::info!(
"Peer {} registered for namespace '{}'",
peer,
registration.namespace
);
}
SwarmEvent::Behaviour(MyBehaviourEvent::Rendezvous(
rendezvous::server::Event::DiscoverServed {
enquirer,
registrations,
},
)) => {
tracing::info!(
"Served peer {} with {} registrations",
enquirer,
registrations.len()
);
}
other => {
tracing::debug!("Unhandled {:?}", other);
}
}
}
Ok(())
}
#[derive(NetworkBehaviour)]
struct MyBehaviour {
identify: identify::Behaviour,
rendezvous: rendezvous::server::Behaviour,
ping: ping::Behaviour,
}
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