diff --git a/Cargo.lock b/Cargo.lock
index 1b2566c33..30757b019 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -547,11 +547,11 @@ dependencies = [
 
 [[package]]
 name = "ctrlc"
-version = "3.1.9"
+version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "232295399409a8b7ae41276757b5a1cc21032848d42bff2352261f958b3ca29a"
+checksum = "377c9b002a72a0b2c1a18c62e2f3864bdfea4a015e3683a96e24aa45dd6c02d1"
 dependencies = [
- "nix 0.20.0",
+ "nix 0.22.0",
  "winapi 0.3.9",
 ]
 
@@ -1727,6 +1727,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "memoffset"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59accc507f1338036a0477ef61afdae33cde60840f4dfe481319ce3ad116ddf9"
+dependencies = [
+ "autocfg 1.0.1",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.4.4"
@@ -1901,6 +1910,19 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "nix"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1e25ee6b412c2a1e3fcb6a4499a5c1bfe7f43e014bdce9a6b6666e5aa2d187"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if 1.0.0",
+ "libc",
+ "memoffset",
+]
+
 [[package]]
 name = "nom"
 version = "5.1.2"
diff --git a/Cargo.toml b/Cargo.toml
index 798dd2f13..f0d83cc4b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -50,6 +50,7 @@ cpal = { git = "https://github.com/rustaudio/cpal" }
 machine-uid = "0.2"
 mac_address = "1.1"
 sciter-rs = { git = "https://github.com/open-trade/rust-sciter", branch = "dyn" }
+ctrlc = "3.2"
 
 [target.'cfg(target_os = "windows")'.dependencies]
 #systray = { git = "https://github.com/open-trade/systray-rs" }
@@ -68,7 +69,6 @@ core-graphics = "0.22"
 libpulse-simple-binding = "2.16"
 libpulse-binding = "2.16"
 rust-pulsectl = { git = "https://github.com/open-trade/pulsectl" }
-ctrlc = "3.1"
 
 [target.'cfg(not(any(target_os = "windows", target_os = "android", target_os = "ios")))'.dependencies]
 psutil = "3.2"
diff --git a/src/server/input_service.rs b/src/server/input_service.rs
index e4c4fbc0c..056267c5b 100644
--- a/src/server/input_service.rs
+++ b/src/server/input_service.rs
@@ -3,7 +3,11 @@ use super::*;
 use dispatch::Queue;
 use enigo::{Enigo, Key, KeyboardControllable, MouseButton, MouseControllable};
 use hbb_common::{config::COMPRESS_LEVEL, protobuf::ProtobufEnumOrUnknown};
-use std::{convert::TryFrom, time::Instant};
+use std::{
+    convert::TryFrom,
+    sync::atomic::{AtomicBool, Ordering},
+    time::Instant,
+};
 
 #[derive(Default)]
 struct StateCursor {
@@ -160,9 +164,9 @@ fn run_cursor(sp: MouseCursorService, state: &mut StateCursor) -> ResultType<()>
 lazy_static::lazy_static! {
     static ref ENIGO: Arc<Mutex<Enigo>> = Arc::new(Mutex::new(Enigo::new()));
     static ref KEYS_DOWN: Arc<Mutex<HashMap<i32, Instant>>> = Default::default();
-    static ref EXITING: Arc<Mutex<bool>> = Default::default();
     static ref LATEST_INPUT: Arc<Mutex<Input>> = Default::default();
 }
+static EXITING: AtomicBool = AtomicBool::new(false);
 
 // mac key input must be run in main thread, otherwise crash on >= osx 10.15
 #[cfg(target_os = "macos")]
@@ -220,26 +224,23 @@ pub fn fix_key_down_timeout_loop() {
         std::thread::sleep(std::time::Duration::from_millis(300));
         fix_key_down_timeout(false);
     });
-    unsafe {
-        libc::signal(libc::SIGINT, fix_key_down_timeout_at_signal as _);
+    if let Err(err) = ctrlc::set_handler(move || {
+        fix_key_down_timeout_at_exit();
+        std::process::exit(0); // will call atexit on posix, but not on Windows
+    }) {
+        log::error!("Failed to set Ctrl-C handler: {}", err);
     }
 }
 
-pub extern "C" fn fix_key_down_timeout_at_exit() {
-    let mut exiting = EXITING.lock().unwrap();
-    if *exiting {
+pub fn fix_key_down_timeout_at_exit() {
+    if EXITING.load(Ordering::SeqCst) {
         return;
     }
-    *exiting = true;
+    EXITING.store(true, Ordering::SeqCst);
     fix_key_down_timeout(true);
     log::info!("fix_key_down_timeout_at_exit");
 }
 
-extern "C" fn fix_key_down_timeout_at_signal(_: libc::c_int) {
-    fix_key_down_timeout_at_exit();
-    std::process::exit(0); // will call atexit on posix, but not on Windows
-}
-
 fn fix_key_down_timeout(force: bool) {
     if KEYS_DOWN.lock().unwrap().is_empty() {
         return;
@@ -317,8 +318,7 @@ fn fix_modifiers(modifiers: &[ProtobufEnumOrUnknown<ControlKey>], en: &mut Enigo
 }
 
 fn handle_mouse_(evt: &MouseEvent, conn: i32) {
-    let exiting = EXITING.lock().unwrap();
-    if *exiting {
+    if EXITING.load(Ordering::SeqCst) {
         return;
     }
     #[cfg(windows)]
@@ -523,8 +523,7 @@ pub fn handle_key(evt: &KeyEvent) {
 }
 
 fn handle_key_(evt: &KeyEvent) {
-    let exiting = EXITING.lock().unwrap();
-    if *exiting {
+    if EXITING.load(Ordering::SeqCst) {
         return;
     }
     #[cfg(windows)]