connexa 0.4.1

High level abtraction of rust-libp2p
Documentation 
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use std::time::Duration;

use connexa::builder::IntoKeypair;
use connexa::handle::Connexa;
use connexa::prelude::identity::Keypair;
use connexa::prelude::{DefaultConnexaBuilder, Multiaddr};
use futures::stream::FuturesUnordered;
use futures::{TryFutureExt, TryStreamExt};
use libp2p::PeerId;

#[allow(dead_code)]
pub const DEFAULT_TIMEOUT: Duration = Duration::from_secs(10);

pub async fn spawn_connexa(keypair: impl IntoKeypair) -> std::io::Result<Connexa> {
    let connexa = DefaultConnexaBuilder::with_existing_identity(keypair)?
        .enable_memory_transport()
        .with_gossipsub()
        .with_blacklist()
        .with_identify()
        .with_kademlia_with_config("/ipfs/kad/1.0.0", |mut config| {
            config.set_record_filtering(libp2p::kad::StoreInserts::FilterBoth);
            config
        })
        .with_request_response(vec![])
        .with_relay()
        .with_relay_server()
        .with_autonat_v1()
        .with_ping()
        .build()?;

    let listen_id = connexa
        .swarm()
        .listen_on("/memory/0".parse().unwrap())
        .await?;

    let peer_id = connexa.keypair().public().to_peer_id();
    let addrs = connexa.swarm().get_listening_addresses(listen_id).await?;
    let addr = addrs.first().cloned().expect("multiaddr available");
    let addr = addr.with_p2p(peer_id).unwrap();

    connexa.swarm().add_external_address(addr).await?;

    Ok(connexa)
}

#[allow(dead_code)]
pub async fn spawn_connexa_with_default_key() -> Connexa {
    let [(node, _, _)] = spawn_connexa_nodes_with_default_keys::<1>().await;
    node
}

pub async fn spawn_connexa_nodes<const N: usize>(
    keypairs: impl IntoIterator<Item = impl IntoKeypair>,
) -> std::io::Result<[(Connexa, PeerId, Multiaddr); N]> {
    let nodes = FuturesUnordered::from_iter(keypairs.into_iter().map(|kp| spawn_connexa(kp)))
        .try_filter_map(|connexa| async move {
            let peer_id = connexa.keypair().public().to_peer_id();
            let addrs = connexa.swarm().listening_addresses().await?;
            assert!(!addrs.is_empty());
            assert_eq!(addrs.len(), 1);
            let addr = addrs.first().cloned().expect("multiaddr available");
            let addr = addr.with_p2p(peer_id).unwrap();
            Ok(Some((connexa, peer_id, addr)))
        })
        .try_collect::<Vec<_>>()
        .and_then(|nodes| async move {
            let nodes: [_; N] = nodes.try_into().expect("array length is correct");
            Ok(nodes)
        })
        .await?;

    Ok(nodes)
}

pub async fn spawn_connexa_nodes_with_default_keys<const N: usize>()
-> [(Connexa, PeerId, Multiaddr); N] {
    spawn_connexa_nodes((0..N).map(|_| Keypair::generate_ed25519()))
        .await
        .unwrap()
}