WIP: Implement rendezvous for asb

Cargo.lock

@@ -2075,9 +2075,9 @@ dependencies = [
 
 [[package]]
 name = "libz-sys"
-version = "1.1.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "602113192b08db8f38796c4e85c39e960c145965140e918018bcde1952429655"
+checksum = "de5435b8549c16d423ed0c03dbaafe57cf6c3344744f1242520d59c9d8ecec66"
 dependencies = [
  "cc",
  "libc",
@@ -2212,18 +2212,18 @@ checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
 [[package]]
 name = "minicbor"
-version = "0.8.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea79ce4ab9f445ec6b71833a2290ac0a29c9dde0fa7cae4c481eecae021d9bd9"
+checksum = "51aa5bb0ca22415daca596a227b507f880ad1b2318a87fa9325312a5d285ca0d"
 dependencies = [
  "minicbor-derive",
 ]
 
 [[package]]
 name = "minicbor-derive"
-version = "0.6.2"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19ce18b5423c573a13e80cb3046ea0af6379ef725dc3af4886bdb8f4e5093068"
+checksum = "7f2b9e8883d58e34b18facd16c4564a77ea50fce028ad3d0ee6753440e37acc8"
 dependencies = [
  "proc-macro2 1.0.24",
  "quote 1.0.9",
@@ -4714,9 +4714,9 @@ dependencies = [
 
 [[package]]
 name = "vcpkg"
-version = "0.2.11"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b00bca6106a5e23f3eee943593759b7fcddb00554332e856d990c893966879fb"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
 [[package]]
 name = "vec_map"

swap/src/bin/asb.rs

@@ -15,7 +15,7 @@
 use anyhow::{bail, Context, Result};
 use libp2p::core::multiaddr::Protocol;
 use libp2p::core::Multiaddr;
-use libp2p::Swarm;
+use libp2p::{PeerId, Swarm};
 use prettytable::{row, Table};
 use std::env;
 use std::net::{IpAddr, Ipv4Addr, SocketAddr};
@@ -152,6 +152,7 @@ async fn main() -> Result<()> {
                 kraken_rate.clone(),
                 resume_only,
                 env_config,
+                seed.derive_libp2p_identity(),
             )?;
 
             for listen in config.network.listen {
@@ -170,6 +171,7 @@ async fn main() -> Result<()> {
                 kraken_rate.clone(),
                 config.maker.min_buy_btc,
                 config.maker.max_buy_btc,
+                PeerId::random(),
             )
             .unwrap();
 

swap/src/network/swarm.rs

@@ -3,6 +3,7 @@ use crate::protocol::{alice, bob};
 use crate::seed::Seed;
 use crate::{asb, bitcoin, cli, env, tor};
 use anyhow::Result;
+use libp2p::identity::Keypair;
 use libp2p::swarm::SwarmBuilder;
 use libp2p::{PeerId, Swarm};
 use std::fmt::Debug;
@@ -16,11 +17,19 @@ pub fn asb<LR>(
     latest_rate: LR,
     resume_only: bool,
     env_config: env::Config,
+    keypair: Keypair,
 ) -> Result<Swarm<alice::Behaviour<LR>>>
 where
     LR: LatestRate + Send + 'static + Debug + Clone,
 {
-    let behaviour = alice::Behaviour::new(min_buy, max_buy, latest_rate, resume_only, env_config);
+    let behaviour = alice::Behaviour::new(
+        min_buy,
+        max_buy,
+        latest_rate,
+        resume_only,
+        env_config,
+        keypair,
+    );
 
     let identity = seed.derive_libp2p_identity();
     let transport = asb::transport::new(&identity)?;

swap/src/network/test.rs

@@ -1,4 +1,5 @@
 use futures::future;
+use futures::stream::StreamExt;
 use libp2p::core::muxing::StreamMuxerBox;
 use libp2p::core::transport::memory::MemoryTransport;
 use libp2p::core::upgrade::{SelectUpgrade, Version};
@@ -129,9 +130,9 @@ where
     let mut bob_connected = false;
 
     while !alice_connected && !bob_connected {
-        let (alice_event, bob_event) = future::join(alice.next_event(), bob.next_event()).await;
+        let (alice_event, bob_event) = future::join(alice.next(), bob.next()).await;
 
-        match alice_event {
+        match alice_event.unwrap() {
             SwarmEvent::ConnectionEstablished { .. } => {
                 alice_connected = true;
             }
@@ -146,7 +147,7 @@ where
             }
             _ => {}
         }
-        match bob_event {
+        match bob_event.unwrap() {
             SwarmEvent::ConnectionEstablished { .. } => {
                 bob_connected = true;
             }

swap/src/protocol/alice/behaviour.rs

@@ -1,7 +1,7 @@
 use anyhow::{anyhow, Error};
 use libp2p::ping::{Ping, PingEvent};
 use libp2p::request_response::{RequestId, ResponseChannel};
-use libp2p::{NetworkBehaviour, PeerId};
+use libp2p::{rendezvous, NetworkBehaviour, PeerId};
 use uuid::Uuid;
 
 use crate::env;
@@ -10,6 +10,8 @@ use crate::network::{encrypted_signature, quote, transfer_proof};
 use crate::protocol::alice::event_loop::LatestRate;
 use crate::protocol::alice::swap_setup::WalletSnapshot;
 use crate::protocol::alice::{swap_setup, State3};
+use libp2p::identity::Keypair;
+use libp2p::rendezvous::{Event, RegisterError, Registration};
 
 #[derive(Debug)]
 pub enum OutEvent {
@@ -42,6 +44,13 @@ pub enum OutEvent {
         peer: PeerId,
         error: Error,
     },
+    Registered {
+        rendezvous_node: PeerId,
+        ttl: i64,
+        namespace: String,
+    },
+    RegisterFailed(RegisterError),
+    RegisterExpired(Registration),
     /// "Fallback" variant that allows the event mapping code to swallow certain
     /// events that we don't want the caller to deal with.
     Other,
@@ -71,6 +80,7 @@ pub struct Behaviour<LR>
 where
     LR: LatestRate + Send + 'static,
 {
+    pub rendezvous: rendezvous::Rendezvous,
     pub quote: quote::Behaviour,
     pub swap_setup: swap_setup::Behaviour<LR>,
     pub transfer_proof: transfer_proof::Behaviour,
@@ -92,8 +102,10 @@ where
         latest_rate: LR,
         resume_only: bool,
         env_config: env::Config,
+        keypair: Keypair,
     ) -> Self {
         Self {
+            rendezvous: rendezvous::Rendezvous::new(keypair, rendezvous::Config::default()),
             quote: quote::alice(),
             swap_setup: swap_setup::Behaviour::new(
                 min_buy,
@@ -114,3 +126,28 @@ impl From<PingEvent> for OutEvent {
         OutEvent::Other
     }
 }
+
+impl From<rendezvous::Event> for OutEvent {
+    fn from(rendezvous_event: rendezvous::Event) -> Self {
+        match rendezvous_event {
+            Event::Discovered { .. } => OutEvent::Other,
+            Event::DiscoverFailed { .. } => OutEvent::Other,
+            Event::Registered {
+                rendezvous_node,
+                ttl,
+                namespace,
+            } => OutEvent::Registered {
+                rendezvous_node,
+                ttl,
+                namespace,
+            },
+            Event::RegisterFailed(register_error) => OutEvent::RegisterFailed(register_error),
+            Event::DiscoverServed { .. } => OutEvent::Other,
+            Event::DiscoverNotServed { .. } => OutEvent::Other,
+            Event::PeerRegistered { .. } => OutEvent::Other,
+            Event::PeerNotRegistered { .. } => OutEvent::Other,
+            Event::PeerUnregistered { .. } => OutEvent::Other,
+            Event::RegistrationExpired(registration) => OutEvent::RegisterExpired(registration),
+        }
+    }
+}

swap/src/protocol/alice/event_loop.rs

@@ -44,6 +44,7 @@ where
     latest_rate: LR,
     min_buy: bitcoin::Amount,
     max_buy: bitcoin::Amount,
+    rendezvous_node: PeerId,
 
     swap_sender: mpsc::Sender<Swap>,
 
@@ -76,6 +77,7 @@ where
         latest_rate: LR,
         min_buy: bitcoin::Amount,
         max_buy: bitcoin::Amount,
+        rendezvous_node: PeerId,
     ) -> Result<(Self, mpsc::Receiver<Swap>)> {
         let swap_channel = MpscChannels::default();
 
@@ -89,6 +91,7 @@ where
             swap_sender: swap_channel.sender,
             min_buy,
             max_buy,
+            rendezvous_node,
             recv_encrypted_signature: Default::default(),
             inflight_encrypted_signatures: Default::default(),
             send_transfer_proof: Default::default(),
@@ -103,6 +106,13 @@ where
     }
 
     pub async fn run(mut self) {
+        let _ = self
+            .swarm
+            .behaviour_mut()
+            .rendezvous
+            .register("xmr-btc-swap".to_string(), self.rendezvous_node, None)
+            .unwrap();
+
         // ensure that these streams are NEVER empty, otherwise it will
         // terminate forever.
         self.send_transfer_proof.push(future::pending().boxed());
@@ -268,6 +278,13 @@ where
                         Some(SwarmEvent::NewListenAddr(address)) => {
                             tracing::info!(%address, "New listen address detected");
                         }
+                        Some(SwarmEvent::Behaviour(OutEvent::Registered { namespace, ..})) => {
+                            tracing::info!(%namespace, "Registered with rendezvous node");
+                        }
+                        Some(SwarmEvent::Behaviour(OutEvent::RegisterExpired(registration))) => {
+                            tracing::info!("Registration expired: {:?}", &registration);
+                            self.swarm.behaviour_mut().rendezvous.register(registration.namespace, registration.record.peer_id(), Some(registration.ttl)).unwrap();
+                        }
                         _ => {}
                     }
                 },

swap/tests/harness/mod.rs

@@ -156,13 +156,16 @@ async fn init_containers(cli: &Cli) -> (Monero, Containers<'_>) {
             .await
             .unwrap();
 
-    (monero, Containers {
-        bitcoind_url,
-        bitcoind,
-        monerod_container,
-        monero_wallet_rpc_containers,
-        electrs,
-    })
+    (
+        monero,
+        Containers {
+            bitcoind_url,
+            bitcoind,
+            monerod_container,
+            monero_wallet_rpc_containers,
+            electrs,
+        },
+    )
 }
 
 async fn init_bitcoind_container(
@@ -236,6 +239,7 @@ async fn start_alice(
         latest_rate,
         resume_only,
         env_config,
+        seed.derive_libp2p_identity(),
     )
     .unwrap();
     swarm.listen_on(listen_address).unwrap();
@@ -249,6 +253,7 @@ async fn start_alice(
         FixedRate::default(),
         min_buy,
         max_buy,
+        PeerId::random(),
     )
     .unwrap();