openai/codex · error · anyhow::Error

managed network proxy refresh semaphore closed

Error message

managed network proxy refresh semaphore closed

What it means

Error "managed network proxy refresh semaphore closed" thrown in openai/codex.

Source

Thrown at codex-rs/core/src/session/mod.rs:2278

        let active = self.active_turn.lock().await;
        let task = active.as_ref()?.task.as_ref()?;
        Some((
            Arc::clone(&task.turn_context),
            task.cancellation_token.child_token(),
        ))
    }

    pub(crate) async fn persist_network_policy_amendment(
        &self,
        amendment: &NetworkPolicyAmendment,
        network_approval_context: &NetworkApprovalContext,
        on_policy_applied: impl FnOnce() + Send,
    ) -> anyhow::Result<()> {
        let _refresh_guard = self
            .managed_network_proxy_refresh_lock
            .acquire()
            .await
            .map_err(|_| anyhow::anyhow!("managed network proxy refresh semaphore closed"))?;
        let host =
            Self::validated_network_policy_amendment_host(amendment, network_approval_context)?;
        let codex_home = self
            .state
            .lock()
            .await
            .session_configuration
            .codex_home()
            .clone();
        let execpolicy_amendment =
            execpolicy_network_rule_amendment(amendment, network_approval_context, &host);
        let mut on_policy_applied = Some(on_policy_applied);

        if let Some(started_network_proxy) = self.services.network_proxy.load_full() {
            let proxy = started_network_proxy.proxy();
            match amendment.action {
                NetworkPolicyRuleAction::Allow => proxy
                    .add_allowed_domain(&host)

View on GitHub (pinned to 339751715c)

Solutions

1. Restart the session; the network proxy refresh subsystem has shut down.

When it happens

Trigger: Thrown at codex-rs/core/src/session/mod.rs:2278 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/711c7919ad79ec81. Report an issue: GitHub.