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use libp2p_core::transport::PortUse;
use libp2p_core::upgrade::DeniedUpgrade;
use libp2p_core::{Endpoint, Multiaddr};
use libp2p_identity::PeerId;
use libp2p_swarm::handler::ConnectionEvent;
use libp2p_swarm::{
ConnectionDenied, ConnectionHandler, ConnectionHandlerEvent, ConnectionId, FromSwarm,
NetworkBehaviour, SubstreamProtocol, Swarm, SwarmEvent, THandler, THandlerInEvent,
THandlerOutEvent, ToSwarm,
};
use libp2p_swarm_test::SwarmExt;
use std::task::{Context, Poll};
use void::Void;
#[async_std::test]
async fn sends_remaining_events_to_behaviour_on_connection_close() {
let mut swarm1 = Swarm::new_ephemeral(|_| Behaviour::new(3));
let mut swarm2 = Swarm::new_ephemeral(|_| Behaviour::new(3));
swarm2.listen().with_memory_addr_external().await;
swarm1.connect(&mut swarm2).await;
swarm1.disconnect_peer_id(*swarm2.local_peer_id()).unwrap();
match libp2p_swarm_test::drive(&mut swarm1, &mut swarm2).await {
([SwarmEvent::ConnectionClosed { .. }], [SwarmEvent::ConnectionClosed { .. }]) => {
assert_eq!(swarm1.behaviour().state, 0);
assert_eq!(swarm2.behaviour().state, 0);
}
(e1, e2) => panic!("Unexpected events: {:?} {:?}", e1, e2),
}
}
struct HandlerWithState {
precious_state: u64,
}
struct Behaviour {
state: u64,
}
impl Behaviour {
fn new(state: u64) -> Self {
Behaviour { state }
}
}
impl NetworkBehaviour for Behaviour {
type ConnectionHandler = HandlerWithState;
type ToSwarm = ();
fn handle_established_inbound_connection(
&mut self,
_: ConnectionId,
_: PeerId,
_: &Multiaddr,
_: &Multiaddr,
) -> Result<THandler<Self>, ConnectionDenied> {
Ok(HandlerWithState {
precious_state: self.state,
})
}
fn handle_established_outbound_connection(
&mut self,
_: ConnectionId,
_: PeerId,
_: &Multiaddr,
_: Endpoint,
_: PortUse,
) -> Result<THandler<Self>, ConnectionDenied> {
Ok(HandlerWithState {
precious_state: self.state,
})
}
fn on_swarm_event(&mut self, event: FromSwarm) {
if let FromSwarm::ConnectionClosed(_) = event {
assert_eq!(self.state, 0);
}
}
fn on_connection_handler_event(
&mut self,
_peer_id: PeerId,
_connection_id: ConnectionId,
event: THandlerOutEvent<Self>,
) {
assert_eq!(self.state, event);
self.state -= 1;
}
fn poll(&mut self, _: &mut Context<'_>) -> Poll<ToSwarm<Self::ToSwarm, THandlerInEvent<Self>>> {
Poll::Pending
}
}
impl ConnectionHandler for HandlerWithState {
type FromBehaviour = Void;
type ToBehaviour = u64;
type InboundProtocol = DeniedUpgrade;
type OutboundProtocol = DeniedUpgrade;
type InboundOpenInfo = ();
type OutboundOpenInfo = ();
fn listen_protocol(&self) -> SubstreamProtocol<Self::InboundProtocol, Self::InboundOpenInfo> {
SubstreamProtocol::new(DeniedUpgrade, ())
}
fn connection_keep_alive(&self) -> bool {
true
}
fn poll(
&mut self,
_: &mut Context<'_>,
) -> Poll<
ConnectionHandlerEvent<Self::OutboundProtocol, Self::OutboundOpenInfo, Self::ToBehaviour>,
> {
Poll::Pending
}
fn poll_close(&mut self, _: &mut Context<'_>) -> Poll<Option<Self::ToBehaviour>> {
if self.precious_state > 0 {
let state = self.precious_state;
self.precious_state -= 1;
return Poll::Ready(Some(state));
}
Poll::Ready(None)
}
fn on_behaviour_event(&mut self, event: Self::FromBehaviour) {
void::unreachable(event)
}
fn on_connection_event(
&mut self,
_: ConnectionEvent<
Self::InboundProtocol,
Self::OutboundProtocol,
Self::InboundOpenInfo,
Self::OutboundOpenInfo,
>,
) {
}
}
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