fix: set idle_connection_timeout in examples

Within examples, we often set up a very specific network configuration which may leave connections idle whilst we wait for user input. To ensure that the examples can still showcase something, we need to set an `idle_connection_timeout` on the `Swarm`.

Related: #4877.

Pull-Request: #4887.

examples/autonat/src/bin/autonat_client.rs

@@ -60,6 +60,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
             yamux::Config::default,
         )?
         .with_behaviour(|key| Behaviour::new(key.public()))?
+        .with_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(60)))
         .build();
 
     swarm.listen_on(

examples/autonat/src/bin/autonat_server.rs

@@ -27,6 +27,7 @@ use libp2p::swarm::{NetworkBehaviour, SwarmEvent};
 use libp2p::{autonat, identify, identity, noise, tcp, yamux};
 use std::error::Error;
 use std::net::Ipv4Addr;
+use std::time::Duration;
 use tracing_subscriber::EnvFilter;
 
 #[derive(Debug, Parser)]
@@ -52,6 +53,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
             yamux::Config::default,
         )?
         .with_behaviour(|key| Behaviour::new(key.public()))?
+        .with_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(60)))
         .build();
 
     swarm.listen_on(

examples/dcutr/src/main.rs

@@ -28,8 +28,8 @@ use libp2p::{
     swarm::{NetworkBehaviour, SwarmEvent},
     tcp, yamux, PeerId,
 };
-use std::error::Error;
 use std::str::FromStr;
+use std::{error::Error, time::Duration};
 use tracing_subscriber::EnvFilter;
 
 #[derive(Debug, Parser)]
@@ -105,6 +105,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
                 )),
                 dcutr: dcutr::Behaviour::new(keypair.public().to_peer_id()),
             })?
+            .with_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(60)))
             .build();
 
     swarm

examples/distributed-key-value-store/src/main.rs

@@ -31,6 +31,7 @@ use libp2p::{
     tcp, yamux,
 };
 use std::error::Error;
+use std::time::Duration;
 use tracing_subscriber::EnvFilter;
 
 #[async_std::main]
@@ -65,6 +66,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
                 )?,
             })
         })?
+        .with_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(60)))
         .build();
 
     swarm.behaviour_mut().kademlia.set_mode(Some(Mode::Server));

examples/file-sharing/src/network.rs

@@ -15,6 +15,7 @@ use libp2p::StreamProtocol;
 use serde::{Deserialize, Serialize};
 use std::collections::{hash_map, HashMap, HashSet};
 use std::error::Error;
+use std::time::Duration;
 
 /// Creates the network components, namely:
 ///
@@ -58,6 +59,7 @@ pub(crate) async fn new(
                 request_response::Config::default(),
             ),
         })?
+        .with_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(60)))
         .build();
 
     swarm

examples/identify/src/main.rs

@@ -22,7 +22,7 @@
 
 use futures::StreamExt;
 use libp2p::{core::multiaddr::Multiaddr, identify, noise, swarm::SwarmEvent, tcp, yamux};
-use std::error::Error;
+use std::{error::Error, time::Duration};
 use tracing_subscriber::EnvFilter;
 
 #[async_std::main]
@@ -44,6 +44,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
                 key.public(),
             ))
         })?
+        .with_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(60)))
         .build();
 
     // Tell the swarm to listen on all interfaces and a random, OS-assigned

examples/ipfs-private/src/main.rs

@@ -31,7 +31,7 @@ use libp2p::{
     swarm::{NetworkBehaviour, SwarmEvent},
     tcp, yamux, Multiaddr, Transport,
 };
-use std::{env, error::Error, fs, path::Path, str::FromStr};
+use std::{env, error::Error, fs, path::Path, str::FromStr, time::Duration};
 use tokio::{io, io::AsyncBufReadExt, select};
 use tracing_subscriber::EnvFilter;
 
@@ -151,6 +151,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
                 ping: ping::Behaviour::new(ping::Config::new()),
             })
         })?
+        .with_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(60)))
         .build();
 
     println!("Subscribing to {gossipsub_topic:?}");