feat(asb): add peer-id command to asb-controller (#754)

* add peer-id command to controller

* add peer-id command to changelog

* nitpick: add some more context to peer id command

---------

Co-authored-by: Binarybaron <binarybaron@protonmail.com>

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- ASB + CONTROLLER: Add the `peer-id` command to the controller shell which can be used to obtain the Peer ID of your ASB instance.
+
 ## [3.3.7] - 2025-11-19
 
 - ORCHESTRATOR + ASB: Support for tunneling both the Bitcoin and Monero node over Tor has been added (thanks to @nabijaczleweli)

swap-controller-api/src/lib.rs

@@ -28,6 +28,11 @@ pub struct MultiaddressesResponse {
     pub multiaddresses: Vec<String>,
 }
 
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct PeerIdResponse {
+    pub peer_id: String,
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct ActiveConnectionsResponse {
     pub connections: usize,
@@ -87,6 +92,8 @@ pub trait AsbApi {
     async fn monero_seed(&self) -> Result<MoneroSeedResponse, ErrorObjectOwned>;
     #[method(name = "multiaddresses")]
     async fn multiaddresses(&self) -> Result<MultiaddressesResponse, ErrorObjectOwned>;
+    #[method(name = "peer_id")]
+    async fn peer_id(&self) -> Result<PeerIdResponse, ErrorObjectOwned>;
     #[method(name = "active_connections")]
     async fn active_connections(&self) -> Result<ActiveConnectionsResponse, ErrorObjectOwned>;
     #[method(name = "get_swaps")]

swap-controller/src/cli.rs

@@ -29,6 +29,8 @@ pub enum Cmd {
     MoneroSeed,
     /// Get external multiaddresses
     Multiaddresses,
+    /// Get peer ID
+    PeerId,
     /// Get active connection count
     ActiveConnections,
     /// Get list of swaps

swap-controller/src/main.rs

@@ -66,6 +66,13 @@ async fn dispatch(cmd: Cmd, client: impl AsbApiClient) -> anyhow::Result<()> {
                 }
             }
         }
+        Cmd::PeerId => {
+            let response = client.peer_id().await?;
+            println!("Peer IDs are used to identify peers within the P2P network.");
+            println!("They are effectively the hash of your public key and are used for end-to-end encryption of network traffic.");
+            println!();
+            println!("Your Peer ID is: {}", response.peer_id);
+        }
         Cmd::ActiveConnections => {
             let response = client.active_connections().await?;
             println!("Connected to {} peers", response.connections);

swap/src/asb/rpc/server.rs

@@ -10,8 +10,8 @@ use std::sync::Arc;
 use swap_controller_api::{
     ActiveConnectionsResponse, AsbApiServer, BitcoinBalanceResponse, BitcoinSeedResponse,
     MoneroAddressResponse, MoneroBalanceResponse, MoneroSeedResponse, MultiaddressesResponse,
-    RegistrationStatusItem, RegistrationStatusResponse, RendezvousConnectionStatus,
-    RendezvousRegistrationStatus, Swap,
+    PeerIdResponse, RegistrationStatusItem, RegistrationStatusResponse,
+    RendezvousConnectionStatus, RendezvousRegistrationStatus, Swap,
 };
 use tokio_util::task::AbortOnDropHandle;
 
@@ -131,6 +131,18 @@ impl AsbApiServer for RpcImpl {
         Ok(MultiaddressesResponse { multiaddresses })
     }
 
+    async fn peer_id(&self) -> Result<PeerIdResponse, ErrorObjectOwned> {
+        let (peer_id, _) = self
+            .event_loop_service
+            .get_multiaddresses()
+            .await
+            .into_json_rpc_result()?;
+
+        Ok(PeerIdResponse {
+            peer_id: peer_id.to_string(),
+        })
+    }
+
     async fn active_connections(&self) -> Result<ActiveConnectionsResponse, ErrorObjectOwned> {
         let connections = self
             .event_loop_service