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use futures::StreamExt;
use libp2p_identify as identify;
use libp2p_swarm::{Swarm, SwarmEvent};
use libp2p_swarm_test::SwarmExt;
use std::collections::HashSet;
use std::iter;
use std::time::{Duration, Instant};
use tracing_subscriber::EnvFilter;
#[async_std::test]
async fn periodic_identify() {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();
let mut swarm1 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("a".to_string(), identity.public())
.with_agent_version("b".to_string()),
)
});
let swarm1_peer_id = *swarm1.local_peer_id();
let mut swarm2 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("c".to_string(), identity.public())
.with_agent_version("d".to_string()),
)
});
let swarm2_peer_id = *swarm2.local_peer_id();
let (swarm1_memory_listen, swarm1_tcp_listen_addr) =
swarm1.listen().with_memory_addr_external().await;
let (swarm2_memory_listen, swarm2_tcp_listen_addr) = swarm2.listen().await;
swarm2.connect(&mut swarm1).await;
use identify::Event::Received;
use identify::Event::Sent;
match libp2p_swarm_test::drive(&mut swarm1, &mut swarm2).await {
(
[Received { info: s1_info, .. }, Sent { .. }],
[Received { info: s2_info, .. }, Sent { .. }],
)
| (
[Sent { .. }, Received { info: s1_info, .. }],
[Sent { .. }, Received { info: s2_info, .. }],
)
| (
[Received { info: s1_info, .. }, Sent { .. }],
[Sent { .. }, Received { info: s2_info, .. }],
)
| (
[Sent { .. }, Received { info: s1_info, .. }],
[Received { info: s2_info, .. }, Sent { .. }],
) => {
assert_eq!(s1_info.public_key.to_peer_id(), swarm2_peer_id);
assert_eq!(s1_info.protocol_version, "c");
assert_eq!(s1_info.agent_version, "d");
assert!(!s1_info.protocols.is_empty());
assert_eq!(s1_info.observed_addr, swarm1_memory_listen);
assert!(s1_info.listen_addrs.contains(&swarm2_tcp_listen_addr));
assert!(s1_info.listen_addrs.contains(&swarm2_memory_listen));
assert_eq!(s2_info.public_key.to_peer_id(), swarm1_peer_id);
assert_eq!(s2_info.protocol_version, "a");
assert_eq!(s2_info.agent_version, "b");
assert!(!s2_info.protocols.is_empty());
// Cannot assert observed address of dialer because memory transport uses ephemeral, outgoing ports.
// assert_eq!(
// s2_info.observed_addr,
// swarm2_memory_listen.with(Protocol::P2p(swarm2_peer_id.into()))
// );
assert!(s2_info.listen_addrs.contains(&swarm1_tcp_listen_addr));
assert!(s2_info.listen_addrs.contains(&swarm1_memory_listen));
}
other => panic!("Unexpected events: {other:?}"),
}
}
#[async_std::test]
async fn only_emits_address_candidate_once_per_connection() {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();
let mut swarm1 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("a".to_string(), identity.public())
.with_agent_version("b".to_string())
.with_interval(Duration::from_secs(1)),
)
});
let mut swarm2 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("c".to_string(), identity.public())
.with_agent_version("d".to_string()),
)
});
swarm2.listen().with_memory_addr_external().await;
swarm1.connect(&mut swarm2).await;
async_std::task::spawn(swarm2.loop_on_next());
let swarm_events = futures::stream::poll_fn(|cx| swarm1.poll_next_unpin(cx))
.take(8)
.collect::<Vec<_>>()
.await;
let infos = swarm_events
.iter()
.filter_map(|e| match e {
SwarmEvent::Behaviour(identify::Event::Received { info, .. }) => Some(info.clone()),
_ => None,
})
.collect::<Vec<_>>();
assert!(
infos.len() > 1,
"should exchange identify payload more than once"
);
let varying_observed_addresses = infos
.iter()
.map(|i| i.observed_addr.clone())
.collect::<HashSet<_>>();
assert_eq!(
varying_observed_addresses.len(),
1,
"Observed address should not vary on persistent connection"
);
let external_address_candidates = swarm_events
.iter()
.filter_map(|e| match e {
SwarmEvent::NewExternalAddrCandidate { address } => Some(address.clone()),
_ => None,
})
.collect::<Vec<_>>();
assert_eq!(
external_address_candidates.len(),
1,
"To only have one external address candidate"
);
assert_eq!(
&external_address_candidates[0],
varying_observed_addresses.iter().next().unwrap()
);
}
#[async_std::test]
async fn emits_unique_listen_addresses() {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();
let mut swarm1 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("a".to_string(), identity.public())
.with_agent_version("b".to_string())
.with_interval(Duration::from_secs(1))
.with_cache_size(10),
)
});
let mut swarm2 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("c".to_string(), identity.public())
.with_agent_version("d".to_string()),
)
});
let (swarm2_mem_listen_addr, swarm2_tcp_listen_addr) =
swarm2.listen().with_memory_addr_external().await;
let swarm2_peer_id = *swarm2.local_peer_id();
swarm1.connect(&mut swarm2).await;
async_std::task::spawn(swarm2.loop_on_next());
let swarm_events = futures::stream::poll_fn(|cx| swarm1.poll_next_unpin(cx))
.take(8)
.collect::<Vec<_>>()
.await;
let infos = swarm_events
.iter()
.filter_map(|e| match e {
SwarmEvent::Behaviour(identify::Event::Received { info, .. }) => Some(info.clone()),
_ => None,
})
.collect::<Vec<_>>();
assert!(
infos.len() > 1,
"should exchange identify payload more than once"
);
let listen_addrs = infos
.iter()
.map(|i| i.listen_addrs.clone())
.collect::<Vec<_>>();
for addrs in listen_addrs {
assert_eq!(addrs.len(), 2);
assert!(addrs.contains(&swarm2_mem_listen_addr));
assert!(addrs.contains(&swarm2_tcp_listen_addr));
}
let reported_addrs = swarm_events
.iter()
.filter_map(|e| match e {
SwarmEvent::NewExternalAddrOfPeer { peer_id, address } => {
Some((*peer_id, address.clone()))
}
_ => None,
})
.collect::<Vec<_>>();
assert_eq!(reported_addrs.len(), 2, "To have two addresses of remote");
assert!(reported_addrs.contains(&(swarm2_peer_id, swarm2_mem_listen_addr)));
assert!(reported_addrs.contains(&(swarm2_peer_id, swarm2_tcp_listen_addr)));
}
#[async_std::test]
async fn identify_push() {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();
let mut swarm1 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(identify::Config::new("a".to_string(), identity.public()))
});
let mut swarm2 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("a".to_string(), identity.public())
.with_agent_version("b".to_string()),
)
});
swarm1.listen().with_memory_addr_external().await;
swarm2.connect(&mut swarm1).await;
// First, let the periodic identify do its thing.
let ([e1, e2], [e3, e4]) = libp2p_swarm_test::drive(&mut swarm1, &mut swarm2).await;
{
use identify::Event::{Received, Sent};
// These can be received in any order, hence assert them here.
assert!(matches!(e1, Received { .. } | Sent { .. }));
assert!(matches!(e2, Received { .. } | Sent { .. }));
assert!(matches!(e3, Received { .. } | Sent { .. }));
assert!(matches!(e4, Received { .. } | Sent { .. }));
}
// Second, actively push.
swarm2
.behaviour_mut()
.push(iter::once(*swarm1.local_peer_id()));
let swarm1_received_info = match libp2p_swarm_test::drive(&mut swarm1, &mut swarm2).await {
([identify::Event::Received { info, .. }], [identify::Event::Pushed { .. }]) => info,
other => panic!("Unexpected events: {other:?}"),
};
assert_eq!(
swarm1_received_info.public_key.to_peer_id(),
*swarm2.local_peer_id()
);
assert_eq!(swarm1_received_info.protocol_version, "a");
assert_eq!(swarm1_received_info.agent_version, "b");
assert!(!swarm1_received_info.protocols.is_empty());
assert!(swarm1_received_info.listen_addrs.is_empty());
}
#[async_std::test]
async fn discover_peer_after_disconnect() {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();
let mut swarm1 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(identify::Config::new("a".to_string(), identity.public()))
});
let mut swarm2 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("a".to_string(), identity.public())
.with_agent_version("b".to_string()),
)
});
swarm1.listen().with_memory_addr_external().await;
swarm2.connect(&mut swarm1).await;
let swarm1_peer_id = *swarm1.local_peer_id();
async_std::task::spawn(swarm1.loop_on_next());
// Wait until we identified.
swarm2
.wait(|event| {
matches!(
event,
SwarmEvent::Behaviour(identify::Event::Received { .. })
)
.then_some(())
})
.await;
swarm2.disconnect_peer_id(swarm1_peer_id).unwrap();
// Wait for connection to close.
swarm2
.wait(|event| matches!(event, SwarmEvent::ConnectionClosed { .. }).then_some(()))
.await;
// We should still be able to dial now!
swarm2.dial(swarm1_peer_id).unwrap();
let connected_peer = swarm2
.wait(|event| match event {
SwarmEvent::ConnectionEstablished { peer_id, .. } => Some(peer_id),
_ => None,
})
.await;
assert_eq!(connected_peer, swarm1_peer_id);
}
#[async_std::test]
async fn configured_interval_starts_after_first_identify() {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();
let identify_interval = Duration::from_secs(5);
let mut swarm1 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("a".to_string(), identity.public())
.with_interval(identify_interval),
)
});
let mut swarm2 = Swarm::new_ephemeral(|identity| {
identify::Behaviour::new(
identify::Config::new("a".to_string(), identity.public())
.with_agent_version("b".to_string()),
)
});
swarm1.listen().with_memory_addr_external().await;
swarm2.connect(&mut swarm1).await;
async_std::task::spawn(swarm2.loop_on_next());
let start = Instant::now();
// Wait until we identified.
swarm1
.wait(|event| {
matches!(event, SwarmEvent::Behaviour(identify::Event::Sent { .. })).then_some(())
})
.await;
let time_to_first_identify = Instant::now().duration_since(start);
assert!(time_to_first_identify < identify_interval)
}
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