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Add ping protocol to ensure connection is alive

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Adds the ping behaviour to both ASB and CLI behaviour that periodically pings a connected party to ensure that the underlying network connection is still alive.
This fixes problems with long-running connections that become dead without a connection closure being reported back to the swarm.
This commit is contained in:
Daniel Karzel 2021-05-26 11:40:55 +10:00
parent 6743801c71
commit c9064d5a37
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GPG key ID: 30C3FC2E438ADB6E
5 changed files with 49 additions and 1 deletions
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13
swap/src/protocol/alice/behaviour.rs
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@ -4,6 +4,7 @@ use crate::protocol::alice::event_loop::LatestRate;
use crate::protocol::alice::{execution_setup, spot_price, State3};
use crate::{env, monero};
use anyhow::{anyhow, Error};
use libp2p::ping::{Ping, PingEvent};
use libp2p::request_response::{RequestId, ResponseChannel};
use libp2p::{NetworkBehaviour, PeerId};
use uuid::Uuid;
@ -75,6 +76,11 @@ where
pub execution_setup: execution_setup::Behaviour,
pub transfer_proof: transfer_proof::Behaviour,
pub encrypted_signature: encrypted_signature::Behaviour,
/// Ping behaviour that ensures that the underlying network connection is
/// still alive. If the ping fails a connection close event will be
/// emitted that is picked up as swarm event.
ping: Ping,
}
impl<LR> Behaviour<LR>
@ -104,6 +110,13 @@ where
execution_setup: Default::default(),
transfer_proof: transfer_proof::alice(),
encrypted_signature: encrypted_signature::alice(),
ping: Ping::default(),
}
}
}
impl From<PingEvent> for OutEvent {
fn from(_: PingEvent) -> Self {
OutEvent::Other
}
}