fix: LAN

Author: Autoparallel

arbiter/src/network/tcp.rs

@@ -264,7 +264,7 @@ impl Network for TcpStream {
 
   fn new() -> Self {
     let std_listener =
-      std::net::TcpListener::bind("127.0.0.1:0").expect("Failed to bind TCP listener");
+      std::net::TcpListener::bind("0.0.0.0:0").expect("Failed to bind TCP listener");
     std_listener.set_nonblocking(true).unwrap();
     let listener = TcpListener::from_std(std_listener).unwrap();
     let local_addr = listener.local_addr().unwrap();

examples/chat/src/main.rs

@@ -99,9 +99,18 @@ async fn main() {
     info!("Successfully connected to {}", peer);
   }
 
+  let local_addr = runtime.network().local_addr();
+  let display_addr = if local_addr.ip().is_unspecified() {
+    // If bound to 0.0.0.0, the "local_addr" will show 0.0.0.0.
+    // In a real app we'd resolve the primary LAN IP, but here we'll just hint it.
+    format!("<YOUR_LAN_IP>:{}", local_addr.port())
+  } else {
+    local_addr.to_string()
+  };
+
   println!("========================================");
   println!(" Welcome to Arbiter Chat, {}!", args.name);
-  println!(" Your node is listening on: {}", runtime.network().local_addr());
+  println!(" Your node is listening on: {}", display_addr);
   println!(" Type your messages below. /quit to exit.");
   println!("========================================");