From 87694f6715bb97fc25ad335d15a1dcdd8b35ed6f Mon Sep 17 00:00:00 2001
From: Aly Raffauf <aly@aly.codes>
Date: Mon, 3 Aug 2026 09:33:49 -0400
Subject: [PATCH] Scope LAN discovery to Appa

---
 src/iroh.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/iroh.rs b/src/iroh.rs
index 192d67c..9c504a5 100644
--- a/src/iroh.rs
+++ b/src/iroh.rs
@@ -36,6 +36,7 @@ mod handler;
 use handler::AppaProtocol;
 /// ALPN for Appa's Iroh control streams. A new value is wire-incompatible.
 pub const APPA_ALPN: &[u8] = b"appa/sync/4";
+const APPA_MDNS_SERVICE_NAME: &str = "appa";
 const MAX_CONTROL_MESSAGE_BYTES: usize = 16 * 1024 * 1024;
 pub(crate) const MAX_AUDIT_EVENTS_PER_RESPONSE: usize = 256;
 const MAX_CONCURRENT_ANNOUNCEMENTS: usize = 4;
@@ -580,7 +581,9 @@ async fn start_lan_discovery(
     endpoint: &Endpoint,
     discovered_peers: Arc<Mutex<BTreeMap<EndpointId, EndpointAddr>>>,
 ) -> anyhow::Result<tokio::task::JoinHandle<()>> {
-    let discovery = MdnsAddressLookup::builder().build(endpoint.id())?;
+    let discovery = MdnsAddressLookup::builder()
+        .service_name(APPA_MDNS_SERVICE_NAME)
+        .build(endpoint.id())?;
     endpoint.address_lookup()?.add(discovery.clone());
     let mut events = discovery.subscribe().await;
     Ok(tokio::spawn(async move {
-- 
2.51.2