Retry with different port

src/client_handler.rs

@@ -2,6 +2,12 @@ use crate::protocol::Message;
 use crate::sound_scheduler::SoundScheduler;
 use std::net::UdpSocket;
 
+pub struct BindError {
+    pub message: String,
+}
+
+type Result<T> = std::result::Result<T, BindError>;
+
 pub struct ClientHandler;
 
 impl ClientHandler {
@@ -13,8 +19,17 @@ impl ClientHandler {
         }
     }
 
-    pub fn listen() {
-        let socket = UdpSocket::bind("0.0.0.0:3000").expect("Could not bind to address");
+    pub fn listen(port: u16) -> Result<()> {
+        let bind_addr = format!("0.0.0.0:{}", port);
+        let socket = UdpSocket::bind(bind_addr);
+        let socket = match socket {
+            Ok(s) => s,
+            Err(e) => {
+                return Err(BindError {
+                    message: e.to_string(),
+                });
+            }
+        };
 
         println!("Listening on {}", socket.local_addr().unwrap());
 

src/dispatcher.rs

@@ -1,5 +1,5 @@
 use std::fs::File;
-use std::io::{BufReader, Read};
+use std::io::BufReader;
 use std::net::UdpSocket;
 use std::thread;
 use std::time::{Duration, SystemTime};

src/main.rs

@@ -20,7 +20,21 @@ fn main() -> eframe::Result {
     };
 
     thread::spawn(move || {
-        ClientHandler::listen();
+        let result = ClientHandler::listen(3000);
+        match result {
+            Ok(_) => {}
+            Err(e) => {
+                eprintln!("Failed to bind: {}", e.message);
+                // Try with port 3001
+                let result = ClientHandler::listen(3001);
+                match result {
+                    Ok(_) => {}
+                    Err(e) => {
+                        eprintln!("Failed to bind again: {}", e.message);
+                    }
+                }
+            }
+        }
     });
 
     eframe::run_native(