feat(inventory agent): Local presence advertisement and discovery now works! Must be within the same LAN to share the multicast address though

adr/agent_discovery/mdns/Cargo.toml

@@ -13,3 +13,5 @@ dmidecode = "0.2" # For getting the motherboard ID on the agent
 log.workspace=true
 env_logger.workspace=true
 clap = { version = "4.5.46", features = ["derive"] }
+get_if_addrs = "0.5.3"
+local-ip-address = "0.6.5"

adr/agent_discovery/mdns/src/advertise.rs

@@ -10,11 +10,10 @@ use crate::SERVICE_TYPE;
 const SERVICE_PORT: u16 = 43210; // A port for the service. It needs one, even if unused.
 
 pub async fn advertise() {
-
     info!("Starting Harmony Agent...");
 
     // Get a unique ID for this machine.
-    let motherboard_id = "some motherboard id";    
+    let motherboard_id = "some motherboard id";
     let instance_name = format!("harmony-agent-{}", motherboard_id);
     info!("This agent's instance name: {}", instance_name);
     info!("Advertising with ID: {}", motherboard_id);
@@ -29,11 +28,13 @@ pub async fn advertise() {
 
     // Create the service information.
     // The instance name should be unique on the network.
+    let local_ip = local_ip_address::local_ip().unwrap();
     let service_info = ServiceInfo::new(
         SERVICE_TYPE,
         &instance_name,
         "harmony-host.local.", // A hostname for the service
-        (), // No specific IP addresses, let the daemon figure it out
+        local_ip,
+        // "0.0.0.0",
         SERVICE_PORT,
         Some(properties),
     )
@@ -43,9 +44,16 @@ pub async fn advertise() {
     mdns.register(service_info)
         .expect("Failed to register service");
 
-    info!("Service '{}' registered and now being advertised.", instance_name);
+    info!(
+        "Service '{}' registered and now being advertised.",
+        instance_name
+    );
     info!("Agent is running. Press Ctrl+C to exit.");
 
+    for iface in get_if_addrs::get_if_addrs().unwrap() {
+        println!("{:#?}", iface);
+    }
+
     // Keep the agent running indefinitely.
     tokio::signal::ctrl_c().await.unwrap();
     info!("Shutting down agent.");