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39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
use anyhow::Result;
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use libp2p::core::muxing::StreamMuxerBox;
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use libp2p::core::transport::Boxed;
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use libp2p::core::upgrade::{SelectUpgrade, Version};
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use libp2p::core::{identity, Transport};
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use libp2p::dns::TokioDnsConfig;
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use libp2p::mplex::MplexConfig;
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use libp2p::noise::{self, NoiseConfig, X25519Spec};
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use libp2p::{yamux, PeerId};
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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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use libp2p::tcp::TokioTcpConfig;
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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 = TokioDnsConfig::system(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::YamuxConfig::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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.boxed();
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Ok(transport)
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}
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pub type SwapTransport = Boxed<(PeerId, StreamMuxerBox)>;
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