Tie remote exec servers to their parent stdin (#35843)

## What changed

- Add `--exit-on-stdin-close` and the `CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE` environment variable as opt-in controls for remote exec servers.
- Gracefully drain active sessions and processes when the parent closes stdin, then flush telemetry before exiting.
- Remove the parent-lifetime environment variable from child process environments.

## Testing

- Cover parent disconnects after signal-listener failures.
- Exercise remote shutdown end to end, including child termination and final telemetry metrics.
- Verify that explicitly disabling the environment variable preserves local exec-server behavior.

GitOrigin-RevId: 63063bc097b54684c370bd545cd32d17c4e55d90

codex-rs/Cargo.lock

@@ -2365,6 +2365,7 @@ dependencies = [
  "codex-utils-path",
  "codex-windows-sandbox",
  "crossterm",
+ "futures",
  "http 1.4.0",
  "insta",
  "libc",
@@ -2380,6 +2381,7 @@ dependencies = [
  "sys-locale",
  "tempfile",
  "tokio",
+ "tokio-tungstenite",
  "toml 0.9.11+spec-1.1.0",
  "tracing",
  "tracing-appender",

codex-rs/cli/Cargo.toml

@@ -109,10 +109,12 @@ app_test_support = { workspace = true }
 assert_cmd = { workspace = true }
 assert_matches = { workspace = true }
 codex-utils-cargo-bin = { workspace = true }
+futures = { workspace = true }
 insta = { workspace = true }
 predicates = { workspace = true }
 pretty_assertions = { workspace = true }
 sqlx = { workspace = true }
+tokio-tungstenite = { workspace = true }
 wiremock = { workspace = true }
 zstd = { workspace = true }
 

codex-rs/cli/src/exec_server_telemetry.rs

@@ -7,6 +7,16 @@ const DEFAULT_ANALYTICS_ENABLED: bool = false;
 const DEFAULT_LOG_FILTER: &str = "error,opentelemetry_sdk=off,opentelemetry_otlp=off";
 const OTEL_SERVICE_NAME: &str = "codex-exec-server";
 
+pub(crate) enum ParentLifetime {
+    Independent,
+    StdinPipe,
+}
+
+pub(crate) enum ShutdownBehavior {
+    Immediate,
+    Graceful(tokio::sync::oneshot::Sender<()>),
+}
+
 pub(crate) fn init(
     config: Option<&codex_core::config::Config>,
 ) -> (impl Send + Sync, codex_exec_server::ExecServerTelemetry) {
@@ -45,10 +55,37 @@ pub(crate) fn init(
     (otel, telemetry)
 }
 
-pub(crate) async fn run_until_shutdown<F, E>(run: F) -> Result<(), E>
+pub(crate) async fn run_until_shutdown<F, E>(
+    run: F,
+    parent_lifetime: ParentLifetime,
+    shutdown_behavior: ShutdownBehavior,
+) -> Result<(), E>
 where
     F: Future<Output = Result<(), E>>,
 {
+    let parent_disconnected = match parent_lifetime {
+        ParentLifetime::Independent => None,
+        ParentLifetime::StdinPipe => {
+            let (sender, receiver) = tokio::sync::oneshot::channel();
+            std::thread::spawn(move || {
+                if let Err(error) =
+                    std::io::copy(&mut std::io::stdin().lock(), &mut std::io::sink())
+                {
+                    tracing::warn!(%error, "Could not read exec-server parent lifetime pipe");
+                }
+                let _ = sender.send(());
+            });
+            Some(receiver)
+        }
+    };
+    let parent_disconnected = async {
+        match parent_disconnected {
+            Some(receiver) => {
+                let _ = receiver.await;
+            }
+            None => std::future::pending().await,
+        }
+    };
     let shutdown_signal = match shutdown_signal() {
         Ok(signal) => Some(signal),
         Err(error) => {
@@ -56,25 +93,57 @@ where
             None
         }
     };
-    tokio::pin!(run);
+    let shutdown_signal = async {
+        match shutdown_signal {
+            Some(signal) => wait_for_shutdown_signal(signal).await,
+            None => std::future::pending().await,
+        }
+    };
+    run_until_shutdown_with_signals(run, parent_disconnected, shutdown_signal, shutdown_behavior)
+        .await
+}
 
-    if let Some(shutdown_signal) = shutdown_signal {
+async fn run_until_shutdown_with_signals<F, E, P, S>(
+    run: F,
+    parent_disconnected: P,
+    shutdown_signal: S,
+    shutdown_behavior: ShutdownBehavior,
+) -> Result<(), E>
+where
+    F: Future<Output = Result<(), E>>,
+    P: Future<Output = ()>,
+    S: Future<Output = std::io::Result<()>>,
+{
+    tokio::pin!(run, parent_disconnected, shutdown_signal);
+    let mut signal_enabled = true;
+
+    loop {
         tokio::select! {
-            result = &mut run => result,
+            result = &mut run => return result,
-            signal = wait_for_shutdown_signal(shutdown_signal) => {
+            _ = &mut parent_disconnected => {
+                tracing::info!("Stopping exec-server after its parent closed stdin");
+                break;
+            }
+            signal = &mut shutdown_signal, if signal_enabled => {
                 match signal {
-                    Ok(()) => Ok(()),
+                    Ok(()) => break,
                     Err(error) => {
                         eprintln!("Could not listen for exec-server shutdown signal: {error}");
+                        signal_enabled = false;
+                    }
+                }
+            }
+        }
+    }
+
+    match shutdown_behavior {
+        ShutdownBehavior::Immediate => Ok(()),
+        ShutdownBehavior::Graceful(sender) => {
+            let _ = sender.send(());
             run.await
         }
     }
 }
-        }
-    } else {
-        run.await
-    }
-}
 
 #[cfg(unix)]
 struct ShutdownSignal {
@@ -114,3 +183,7 @@ fn stderr_env_filter() -> EnvFilter {
         .or_else(|_| EnvFilter::try_new(DEFAULT_LOG_FILTER))
         .unwrap_or_else(|_| EnvFilter::new("error"))
 }
+
+#[cfg(test)]
+#[path = "exec_server_telemetry_tests.rs"]
+mod tests;

codex-rs/cli/src/exec_server_telemetry_tests.rs

@@ -0,0 +1,31 @@
+use std::time::Duration;
+
+use super::ShutdownBehavior;
+use super::run_until_shutdown_with_signals;
+
+#[tokio::test]
+async fn parent_disconnect_still_stops_executor_after_signal_listener_error() {
+    let (parent_sender, parent_receiver) = tokio::sync::oneshot::channel();
+    let (shutdown_sender, shutdown_receiver) = tokio::sync::oneshot::channel();
+    let run = async move {
+        let _ = shutdown_receiver.await;
+        Ok::<(), std::io::Error>(())
+    };
+    let task = tokio::spawn(run_until_shutdown_with_signals(
+        run,
+        async move {
+            let _ = parent_receiver.await;
+        },
+        std::future::ready(Err(std::io::Error::other("signal listener failed"))),
+        ShutdownBehavior::Graceful(shutdown_sender),
+    ));
+
+    tokio::task::yield_now().await;
+    parent_sender.send(()).expect("parent lifetime receiver");
+
+    tokio::time::timeout(Duration::from_secs(1), task)
+        .await
+        .expect("parent disconnect should stop the executor")
+        .expect("shutdown task should not panic")
+        .expect("executor should shut down successfully");
+}

codex-rs/cli/src/main.rs

@@ -587,6 +587,14 @@ struct ExecServerCommand {
     /// Use Agent Identity auth from CODEX_ACCESS_TOKEN for remote registration.
     #[arg(long = "use-agent-identity-auth", requires = "remote")]
     use_agent_identity_auth: bool,
+
+    /// Exit when the parent-owned standard-input pipe closes.
+    #[arg(
+        long = "exit-on-stdin-close",
+        env = codex_exec_server::CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE_ENV_VAR,
+        requires_if("true", "remote")
+    )]
+    exit_on_stdin_close: bool,
 }
 
 #[derive(Debug, clap::Subcommand)]
@@ -1724,9 +1732,26 @@ async fn run_exec_server_command(
             remote_config.name = name;
         }
         let remote_config = remote_config.with_telemetry(telemetry);
-        exec_server_telemetry::run_until_shutdown(async move {
+        let parent_lifetime = if cmd.exit_on_stdin_close {
-            codex_exec_server::run_remote_environment(remote_config, runtime_paths).await
+            exec_server_telemetry::ParentLifetime::StdinPipe
-        })
+        } else {
+            exec_server_telemetry::ParentLifetime::Independent
+        };
+        let (shutdown_sender, shutdown_receiver) = tokio::sync::oneshot::channel();
+        exec_server_telemetry::run_until_shutdown(
+            async move {
+                codex_exec_server::run_remote_environment_until_shutdown(
+                    remote_config,
+                    runtime_paths,
+                    async move {
+                        let _ = shutdown_receiver.await;
+                    },
+                )
+                .await
+            },
+            parent_lifetime,
+            exec_server_telemetry::ShutdownBehavior::Graceful(shutdown_sender),
+        )
         .await?;
         Ok(())
     } else {
@@ -1748,7 +1773,8 @@ async fn run_exec_server_command(
         let listen_url = cmd
             .listen
             .unwrap_or_else(|| codex_exec_server::DEFAULT_LISTEN_URL.to_string());
-        exec_server_telemetry::run_until_shutdown(async move {
+        exec_server_telemetry::run_until_shutdown(
+            async move {
                 codex_exec_server::run_main_with_telemetry(
                     &listen_url,
                     runtime_paths,
@@ -1756,7 +1782,10 @@ async fn run_exec_server_command(
                     http_client_factory,
                 )
                 .await
-        })
+            },
+            exec_server_telemetry::ParentLifetime::Independent,
+            exec_server_telemetry::ShutdownBehavior::Immediate,
+        )
         .await
         .map_err(anyhow::Error::from_boxed)
     }

codex-rs/cli/tests/exec_server.rs

@@ -1,3 +1,4 @@
+use std::collections::HashMap;
 #[cfg(unix)]
 use std::io::BufRead as _;
 #[cfg(unix)]
@@ -16,7 +17,19 @@ use std::time::Duration;
 #[cfg(unix)]
 use std::time::Instant;
 
+use anyhow::Context;
 use anyhow::Result;
+use codex_exec_server::ExecParams;
+use codex_exec_server::ExecServerClient;
+use codex_exec_server::NoiseChannelIdentity;
+use codex_exec_server::NoiseChannelPublicKey;
+use codex_exec_server::NoiseRendezvousConnectArgs;
+use codex_exec_server::NoiseRendezvousConnectBundle;
+use codex_exec_server::ProcessId;
+use codex_http_client::HttpClientFactory;
+use codex_http_client::OutboundProxyPolicy;
+use futures::SinkExt;
+use futures::StreamExt;
 use predicates::prelude::PredicateBooleanExt;
 use predicates::str::contains;
 use tempfile::TempDir;
@@ -24,6 +37,9 @@ use tokio::io::AsyncBufReadExt;
 use tokio::io::AsyncReadExt;
 use tokio::io::AsyncWriteExt;
 use tokio::io::BufReader;
+use tokio::net::TcpListener;
+use tokio_tungstenite::WebSocketStream;
+use tokio_tungstenite::accept_async;
 use wiremock::Mock;
 use wiremock::MockServer;
 use wiremock::ResponseTemplate;
@@ -74,6 +90,261 @@ fn local_exec_server_ignores_invalid_config_without_strict_config() -> Result<()
     Ok(())
 }
 
+#[test]
+fn local_exec_server_allows_disabled_parent_lifetime_environment_variable() -> Result<()> {
+    let codex_home = TempDir::new()?;
+    let mut cmd = codex_command(codex_home.path())?;
+    cmd.env(
+        codex_exec_server::CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE_ENV_VAR,
+        "false",
+    )
+    .args(["exec-server", "--listen", "stdio"])
+    .assert()
+    .success();
+
+    Ok(())
+}
+
+#[tokio::test]
+async fn remote_exec_server_gracefully_stops_when_parent_stdin_closes() -> Result<()> {
+    const ENVIRONMENT_ID: &str = "environment-parent-lifetime";
+    const EXECUTOR_REGISTRATION_ID: &str = "registration-parent-lifetime";
+    const TEST_TIMEOUT: Duration = Duration::from_secs(30);
+
+    let collector = MockServer::start().await;
+    Mock::given(method("POST"))
+        .and(path("/v1/metrics"))
+        .respond_with(ResponseTemplate::new(202))
+        .mount(&collector)
+        .await;
+    let listener = TcpListener::bind("127.0.0.1:0").await?;
+    let rendezvous_url = format!("ws://{}", listener.local_addr()?);
+    let registry = MockServer::start().await;
+    Mock::given(method("POST"))
+        .and(path(format!(
+            "/cloud/environment/{ENVIRONMENT_ID}/register"
+        )))
+        .respond_with(ResponseTemplate::new(200).set_body_json(serde_json::json!({
+            "environment_id": ENVIRONMENT_ID,
+            "url": format!("{rendezvous_url}/relay?role=environment"),
+            "security_profile": "noise_hybrid_ik_v1",
+            "executor_registration_id": EXECUTOR_REGISTRATION_ID,
+        })))
+        .mount(&registry)
+        .await;
+    Mock::given(method("POST"))
+        .and(path(format!(
+            "/cloud/environment/{ENVIRONMENT_ID}/validate"
+        )))
+        .respond_with(ResponseTemplate::new(200).set_body_json(serde_json::json!({
+            "valid": true,
+        })))
+        .mount(&registry)
+        .await;
+
+    let codex_home = TempDir::new()?;
+    let collector_url = collector.uri();
+    std::fs::write(
+        codex_home.path().join("config.toml"),
+        format!(
+            r#"
+[analytics]
+enabled = true
+
+[otel]
+environment = "test"
+metrics_exporter = {{ otlp-http = {{ endpoint = "{collector_url}/v1/metrics", protocol = "json" }} }}
+"#
+        ),
+    )?;
+    let mut command = tokio::process::Command::new(codex_utils_cargo_bin::cargo_bin("codex")?);
+    command
+        .env("CODEX_HOME", codex_home.path())
+        .env("CODEX_API_KEY", "test-api-key")
+        .env(
+            codex_exec_server::CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE_ENV_VAR,
+            "true",
+        )
+        .env("NO_PROXY", "127.0.0.1,localhost")
+        .env("no_proxy", "127.0.0.1,localhost")
+        .args([
+            "exec-server",
+            "--remote",
+            &registry.uri(),
+            "--environment-id",
+            ENVIRONMENT_ID,
+        ])
+        .stdin(Stdio::piped())
+        .stderr(Stdio::piped())
+        .kill_on_drop(true);
+
+    let mut child = command.spawn()?;
+    let stdin = child
+        .stdin
+        .take()
+        .ok_or_else(|| anyhow::anyhow!("remote exec-server stdin was not piped"))?;
+
+    let environment_websocket = accept_parent_lifetime_websocket(&listener, TEST_TIMEOUT).await?;
+    let executor_public_key = registered_parent_lifetime_executor_public_key(&registry).await?;
+    let harness_args = NoiseRendezvousConnectArgs {
+        bundle: NoiseRendezvousConnectBundle {
+            websocket_url: format!("{rendezvous_url}/relay?role=harness"),
+            environment_id: ENVIRONMENT_ID.to_string(),
+            executor_registration_id: EXECUTOR_REGISTRATION_ID.to_string(),
+            executor_public_key,
+            harness_key_authorization: "parent-lifetime-harness".to_string(),
+        },
+        harness_identity: NoiseChannelIdentity::generate()?,
+        client_name: "parent-lifetime-test".to_string(),
+        connect_timeout: TEST_TIMEOUT,
+        initialize_timeout: TEST_TIMEOUT,
+        resume_session_id: None,
+        http_client_factory: HttpClientFactory::new(OutboundProxyPolicy::ReqwestDefault),
+    };
+    let client_task =
+        tokio::spawn(async move { ExecServerClient::connect_noise_rendezvous(harness_args).await });
+    let harness_websocket = accept_parent_lifetime_websocket(&listener, TEST_TIMEOUT).await?;
+    let relay_task = tokio::spawn(proxy_parent_lifetime_relay(
+        environment_websocket,
+        harness_websocket,
+    ));
+    let client = tokio::time::timeout(TEST_TIMEOUT, client_task)
+        .await
+        .context("remote harness did not connect")???;
+
+    #[cfg(windows)]
+    let argv = vec![
+        "cmd.exe",
+        "/C",
+        "if defined CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE (exit /b 1) else ping -n 61 127.0.0.1",
+    ];
+    #[cfg(not(windows))]
+    let argv = vec![
+        "/bin/sh",
+        "-c",
+        "[ -z \"${CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE+present}\" ] && exec /bin/sleep 60",
+    ];
+    let cwd = url::Url::from_directory_path(std::env::current_dir()?)
+        .map_err(|()| anyhow::anyhow!("could not convert cwd to file URL"))?;
+    client
+        .exec(ExecParams {
+            process_id: ProcessId::from("parent-lifetime-process"),
+            argv: argv.into_iter().map(str::to_string).collect(),
+            cwd: cwd.as_str().parse()?,
+            env_policy: Some(codex_exec_server::ExecEnvPolicy {
+                inherit: codex_protocol::config_types::ShellEnvironmentPolicyInherit::All,
+                ignore_default_excludes: false,
+                exclude: Vec::new(),
+                r#set: HashMap::new(),
+                include_only: Vec::new(),
+            }),
+            env: HashMap::new(),
+            tty: false,
+            pipe_stdin: false,
+            arg0: None,
+            sandbox: None,
+            enforce_managed_network: false,
+            managed_network: None,
+            network_proxy: None,
+        })
+        .await?;
+    anyhow::ensure!(
+        child.try_wait()?.is_none(),
+        "remote exec-server exited while its parent stdin remained open"
+    );
+
+    drop(stdin);
+
+    let output = tokio::time::timeout(TEST_TIMEOUT, child.wait_with_output())
+        .await
+        .map_err(|_| anyhow::anyhow!("remote exec-server did not exit after stdin closed"))??;
+    anyhow::ensure!(
+        output.status.success(),
+        "remote exec-server exited with {}; stderr: {}",
+        output.status,
+        String::from_utf8_lossy(&output.stderr)
+    );
+
+    relay_task.abort();
+    let _ = relay_task.await;
+
+    let requests = collector
+        .received_requests()
+        .await
+        .ok_or_else(|| anyhow::anyhow!("failed to read OTLP collector requests"))?;
+    let metrics = requests
+        .iter()
+        .filter(|request| request.url.path() == "/v1/metrics")
+        .map(|request| serde_json::from_slice::<serde_json::Value>(&request.body))
+        .collect::<serde_json::Result<Vec<_>>>()?;
+    assert_metric_point(&metrics, "exec_server_processes_active", &[], Some(0));
+    assert_metric_point(
+        &metrics,
+        "exec_server_processes_finished_total",
+        &[("result", "terminated")],
+        Some(1),
+    );
+    assert_metric_point(
+        &metrics,
+        "exec_server_requests_total",
+        &[("method", "process/start"), ("result", "success")],
+        Some(1),
+    );
+
+    Ok(())
+}
+
+async fn accept_parent_lifetime_websocket(
+    listener: &TcpListener,
+    timeout: Duration,
+) -> Result<WebSocketStream<tokio::net::TcpStream>> {
+    let (socket, _) = tokio::time::timeout(timeout, listener.accept())
+        .await
+        .context("remote executor or harness did not reach rendezvous")??;
+    tokio::time::timeout(timeout, accept_async(socket))
+        .await
+        .context("fake rendezvous did not complete websocket handshake")?
+        .map_err(Into::into)
+}
+
+async fn registered_parent_lifetime_executor_public_key(
+    registry: &MockServer,
+) -> Result<NoiseChannelPublicKey> {
+    let requests = registry
+        .received_requests()
+        .await
+        .context("failed to read remote registry requests")?;
+    let request = requests
+        .iter()
+        .find(|request| request.url.path().ends_with("/register"))
+        .context("remote executor did not register before connecting")?;
+    let body: serde_json::Value = serde_json::from_slice(&request.body)?;
+    serde_json::from_value(body["executor_public_key"].clone()).map_err(Into::into)
+}
+
+async fn proxy_parent_lifetime_relay(
+    mut environment: WebSocketStream<tokio::net::TcpStream>,
+    mut harness: WebSocketStream<tokio::net::TcpStream>,
+) -> Result<()> {
+    loop {
+        tokio::select! {
+            message = environment.next() => {
+                let Some(message) = message else {
+                    break;
+                };
+                harness.send(message?).await?;
+            }
+            message = harness.next() => {
+                let Some(message) = message else {
+                    break;
+                };
+                environment.send(message?).await?;
+            }
+        }
+    }
+    Ok(())
+}
+
 #[tokio::test]
 async fn local_exec_server_flushes_telemetry_on_stdio_disconnect() -> Result<()> {
     let collector = MockServer::start().await;

codex-rs/exec-server/src/lib.rs

@@ -39,6 +39,10 @@ mod websocket_pong_watchdog;
 
 use codex_exec_server_protocol as protocol;
 
+/// Process-local opt-in for tying a remote executor to its parent's stdin pipe.
+pub const CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE_ENV_VAR: &str =
+    "CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE";
+
 pub use arg0_exec_helper::CODEX_ARG0_EXEC_HELPER_ARG1;
 pub use arg0_exec_helper::main as run_arg0_exec_helper_main;
 pub use capability_discovery::CapabilityDiscoveryError;
@@ -181,6 +185,7 @@ pub use protocol::WriteResponse;
 pub use protocol::WriteStatus;
 pub use remote::RemoteEnvironmentConfig;
 pub use remote::run_remote_environment;
+pub use remote::run_remote_environment_until_shutdown;
 pub use resolved_capability::ResolvedSelectedCapabilityRoot;
 pub use resolved_capability::SelectedCapabilityRootsStatus;
 pub use runtime_paths::ExecServerRuntimePaths;

codex-rs/exec-server/src/local_process.rs

@@ -624,15 +624,18 @@ impl LocalProcess {
 }
 
 fn child_env(params: &ExecParams) -> HashMap<String, String> {
-    let Some(env_policy) = &params.env_policy else {
+    let mut env = match &params.env_policy {
-        return params.env.clone();
+        Some(env_policy) => {
-    };
-
             let policy = shell_environment_policy(env_policy);
             let mut env = shell_environment::create_env(&policy, /*thread_id*/ None);
             env.extend(params.env.clone());
             env
         }
+        None => params.env.clone(),
+    };
+    env.remove(crate::CODEX_EXEC_SERVER_EXIT_ON_STDIN_CLOSE_ENV_VAR);
+    env
+}
 
 fn shell_environment_policy(env_policy: &ExecEnvPolicy) -> ShellEnvironmentPolicy {
     ShellEnvironmentPolicy {

codex-rs/exec-server/src/remote.rs

@@ -514,6 +514,20 @@ pub async fn run_remote_environment(
     config: RemoteEnvironmentConfig,
     runtime_paths: ExecServerRuntimePaths,
 ) -> Result<(), ExecServerError> {
+    run_remote_environment_until_shutdown(config, runtime_paths, std::future::pending()).await
+}
+
+/// Serve a remote environment until its owner requests graceful shutdown.
+///
+/// Active sessions and their processes are drained before this function returns.
+pub async fn run_remote_environment_until_shutdown<F>(
+    config: RemoteEnvironmentConfig,
+    runtime_paths: ExecServerRuntimePaths,
+    shutdown: F,
+) -> Result<(), ExecServerError>
+where
+    F: std::future::Future<Output = ()>,
+{
     ensure_rustls_crypto_provider();
     let client = EnvironmentRegistryClient::new_with_telemetry(
         config.base_url.clone(),
@@ -526,6 +540,24 @@ pub async fn run_remote_environment(
         config.telemetry.clone(),
         config.http_client_factory.clone(),
     );
+
+    let result = {
+        let run = run_remote_environment_connections(config, client, processor.clone());
+        tokio::pin!(run, shutdown);
+        tokio::select! {
+            result = &mut run => result,
+            _ = &mut shutdown => Ok(()),
+        }
+    };
+    processor.shutdown().await;
+    result
+}
+
+async fn run_remote_environment_connections(
+    config: RemoteEnvironmentConfig,
+    client: EnvironmentRegistryClient,
+    processor: ConnectionProcessor,
+) -> Result<(), ExecServerError> {
     let identity = NoiseChannelIdentity::generate().map_err(|error| {
         ExecServerError::Protocol(format!("failed to generate Noise relay identity: {error}"))
     })?;