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54 lines
1.5 KiB
Rust
54 lines
1.5 KiB
Rust
use anyhow::Result;
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use libp2p::{
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core::{
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either::EitherError,
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identity,
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muxing::StreamMuxerBox,
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transport::{boxed::Boxed, timeout::TransportTimeoutError},
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upgrade::{SelectUpgrade, Version},
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Transport, UpgradeError,
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},
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dns::{DnsConfig, DnsErr},
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mplex::MplexConfig,
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noise::{self, NoiseConfig, NoiseError, X25519Spec},
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tcp::TokioTcpConfig,
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yamux, PeerId,
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};
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use std::{io, time::Duration};
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/// Builds a libp2p transport with the following features:
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/// - TcpConnection
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/// - DNS name resolution
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/// - authentication via noise
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/// - multiplexing via yamux or mplex
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pub fn build(id_keys: identity::Keypair) -> Result<SwapTransport> {
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let dh_keys = noise::Keypair::<X25519Spec>::new().into_authentic(&id_keys)?;
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let noise = NoiseConfig::xx(dh_keys).into_authenticated();
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let tcp = TokioTcpConfig::new().nodelay(true);
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let dns = DnsConfig::new(tcp)?;
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let transport = dns
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.upgrade(Version::V1)
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.authenticate(noise)
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.multiplex(SelectUpgrade::new(
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yamux::Config::default(),
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MplexConfig::new(),
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))
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.map(|(peer, muxer), _| (peer, StreamMuxerBox::new(muxer)))
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.timeout(Duration::from_secs(20))
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.boxed();
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Ok(transport)
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}
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pub type SwapTransport = Boxed<
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(PeerId, StreamMuxerBox),
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TransportTimeoutError<
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EitherError<
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EitherError<DnsErr<io::Error>, UpgradeError<NoiseError>>,
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UpgradeError<EitherError<io::Error, io::Error>>,
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>,
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>,
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>;
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