https://github.com/rustdesk/rustdesk/issues/406#issuecomment-1064011977

libs/enigo/src/linux.rs

@@ -505,7 +505,9 @@ fn start_pynput_service(rx: mpsc::Receiver<(PyMsg, bool)>) {
         } else {
             let mut status = Ok(true);
             for i in 0..100 {
-                log::info!("#{} try to start pynput server", i);
+                if i % 10 == 0 {
+                    log::info!("#{} try to start pynput server", i);
+                }
                 status = std::process::Command::new("sudo")
                     .args(vec![
                         &format!("XDG_RUNTIME_DIR=/run/user/{}", userid) as &str,
@@ -536,12 +538,14 @@ fn start_pynput_service(rx: mpsc::Receiver<(PyMsg, bool)>) {
         }
     });
     std::thread::spawn(move || {
-        for _ in 0..300 {
+        for i in 0..300 {
             std::thread::sleep(std::time::Duration::from_millis(100));
             let mut conn = match std::os::unix::net::UnixStream::connect(IPC_FILE) {
                 Ok(conn) => conn,
                 Err(err) => {
-                    log::error!("Failed to connect to {}: {}", IPC_FILE, err);
+                    if i % 15 == 0 {
+                        log::warn!("Failed to connect to {}: {}", IPC_FILE, err);
+                    }
                     continue;
                 }
             };

pynput_service.py

@@ -1,12 +1,67 @@
 from pynput.keyboard import Key, Controller
 from pynput.keyboard._xorg import KeyCode
+from pynput._util.xorg import display_manager
+import Xlib
 import os
 import sys
 import socket
 
-INVALID = KeyCode._from_symbol("\0")  # test
+KeyCode._from_symbol("\0")  # test
 
-keyboard = Controller()
+class MyController(Controller):
+    def _handle(self, key, is_press):
+        """Resolves a key identifier and sends a keyboard event.
+        :param event: The *X* keyboard event.
+        :param int keysym: The keysym to handle.
+        """
+        event = Xlib.display.event.KeyPress if is_press \
+            else Xlib.display.event.KeyRelease
+        keysym = self._keysym(key)
+
+        # Make sure to verify that the key was resolved
+        if keysym is None:
+            raise self.InvalidKeyException(key)
+
+        # If the key has a virtual key code, use that immediately with
+        # fake_input; fake input,being an X server extension, has access to
+        # more internal state that we do
+        if key.vk is not None:
+            with display_manager(self._display) as dm:
+                Xlib.ext.xtest.fake_input(
+                    dm,
+                    Xlib.X.KeyPress if is_press else Xlib.X.KeyRelease,
+                    dm.keysym_to_keycode(key.vk))
+
+        # Otherwise use XSendEvent; we need to use this in the general case to
+        # work around problems with keyboard layouts
+        else:
+            try:
+                keycode, shift_state = self.keyboard_mapping[keysym]
+                with self.modifiers as modifiers:
+                    alt_gr = Key.alt_gr in modifiers
+                if alt_gr:
+                    self._send_key(event, keycode, shift_state)
+                else:
+                    with display_manager(self._display) as dm:
+                        Xlib.ext.xtest.fake_input(
+                            dm,
+                            Xlib.X.KeyPress if is_press else Xlib.X.KeyRelease,
+                            keycode)
+
+            except KeyError:
+                with self._borrow_lock:
+                    keycode, index, count = self._borrows[keysym]
+                    self._send_key(
+                        event,
+                        keycode,
+                        index_to_shift(self._display, index))
+                    count += 1 if is_press else -1
+                    self._borrows[keysym] = (keycode, index, count)
+
+        # Notify any running listeners
+        self._emit('_on_fake_event', key, is_press)
+
+keyboard = MyController()
 
 server_address = sys.argv[1]
 if not os.path.exists(os.path.dirname(server_address)):
@@ -52,7 +107,7 @@ def loop():
                 name = msg[1]
             else:
                 name = KeyCode._from_symbol(msg[1:])
-            if name == INVALID:
+            if str(name) == "<0>":
                 continue
             try:
                 if msg[0] == "p":
@@ -66,3 +121,4 @@ def loop():
 loop()
 clientsocket.close()
 server.close()
+