prevent authorization request spamming windows

lan-mouse-gtk/src/window.rs

@@ -474,6 +474,9 @@ impl Window {
     }
 
     pub(super) fn request_authorization(&self, fingerprint: &str) {
+        if let Some(w) = self.imp().authorization_window.borrow_mut().take() {
+            w.close();
+        }
         let window = AuthorizationWindow::new(fingerprint);
         window.set_transient_for(Some(self));
         window.connect_closure(
@@ -496,5 +499,6 @@ impl Window {
             }),
         );
         window.present();
+        self.imp().authorization_window.replace(Some(window));
     }
 }

lan-mouse-gtk/src/window/imp.rs

@@ -8,6 +8,8 @@ use gtk::{gdk, gio, glib, Button, CompositeTemplate, Entry, Image, Label, ListBo
 
 use lan_mouse_ipc::{FrontendRequestWriter, DEFAULT_PORT};
 
+use crate::authorization_window::AuthorizationWindow;
+
 #[derive(CompositeTemplate, Default)]
 #[template(resource = "/de/feschber/LanMouse/window.ui")]
 pub struct Window {
@@ -49,6 +51,7 @@ pub struct Window {
     pub port: Cell<u16>,
     pub capture_active: Cell<bool>,
     pub emulation_active: Cell<bool>,
+    pub authorization_window: RefCell<Option<AuthorizationWindow>>,
 }
 
 #[glib::object_subclass]

src/emulation.rs

@@ -128,6 +128,7 @@ impl ListenTask {
     async fn run(mut self) {
         let mut interval = tokio::time::interval(Duration::from_secs(5));
         let mut last_response = HashMap::new();
+        let mut rejected_connections = HashMap::new();
         loop {
             select! {
                 e = self.listener.next() => {match e {
@@ -156,7 +157,10 @@ impl ListenTask {
                         self.event_tx.send(EmulationEvent::Connected { addr, fingerprint }).expect("channel closed");
                     }
                     Some(ListenEvent::Rejected { fingerprint }) => {
-                        self.event_tx.send(EmulationEvent::ConnectionAttempt { fingerprint }).expect("channel closed");
+                        if rejected_connections.insert(fingerprint.clone(), Instant::now())
+                            .is_none_or(|i| i.elapsed() >= Duration::from_secs(2)) {
+                                self.event_tx.send(EmulationEvent::ConnectionAttempt { fingerprint }).expect("channel closed");
+                            }
                     }
                     None => break
                 }}