Add an option to disable propagation of switch keys

example/server.toml

@@ -1,6 +1,9 @@
 listen = "0.0.0.0:5258"
 # See `switch-keys.md` in the repository root for the list of all possible keys.
 switch-keys = ["left-alt", "left-ctrl"]
+# Whether switch key presses should be propagated on the server and its clients.
+# Optional, defaults to true.
+# propagate-switch-keys = true
 certificate = "/etc/rkvm/certificate.pem"
 key = "/etc/rkvm/key.pem"
 

rkvm-server/src/config.rs

@@ -12,6 +12,7 @@ pub struct Config {
     pub key: PathBuf,
     pub password: String,
     pub switch_keys: HashSet<SwitchKey>,
+    pub propagate_switch_keys: Option<bool>,
 }
 
 #[derive(Deserialize, Clone, Copy, PartialEq, Eq, Hash)]

rkvm-server/src/main.rs

@@ -68,9 +68,10 @@ async fn main() -> ExitCode {
     };
 
     let switch_keys = config.switch_keys.into_iter().map(Into::into).collect();
+    let propagate_switch_keys = config.propagate_switch_keys.unwrap_or(true);
 
     tokio::select! {
-        result = server::run(config.listen, acceptor, &config.password, &switch_keys) => {
+        result = server::run(config.listen, acceptor, &config.password, &switch_keys, propagate_switch_keys) => {
             if let Err(err) = result {
                 tracing::error!("Error: {}", err);
                 return ExitCode::FAILURE;

rkvm-server/src/server.rs

@@ -38,6 +38,7 @@ pub async fn run(
     acceptor: TlsAcceptor,
     password: &str,
     switch_keys: &HashSet<Key>,
+    propagate_switch_keys: bool,
 ) -> Result<(), Error> {
     let listener = TcpListener::bind(&listen).await.map_err(Error::Network)?;
     tracing::info!("Listening on {}", listen);
@@ -221,6 +222,10 @@ pub async fn run(
                         }
                     }
 
+                    if press && !propagate_switch_keys {
+                        continue;
+                    }
+
                     let events = [event]
                         .into_iter()
                         .chain(press.then_some(Event::Sync(SyncEvent::All)));