## Why The managed app-server daemon and automatic TUI attachment were limited to Unix, so Windows users could not share a background server across Codex sessions. ## What changed - Enable daemon lifecycle commands, `codex agents` startup, and AF_UNIX daemon discovery on Windows. - Require Windows daemons to start non-elevated and verify the discovered socket directory and peer before connecting. - Preflight detached process support, preserve path-based environment settings, and keep daemon processes out of the launching project's working directory. - Fall back to an embedded server when an implicitly discovered daemon cannot connect, while preserving errors for explicit remote endpoints and bypassing daemon reuse when `CODEX_EXEC_SERVER_URL` is set. ## Testing Add coverage for Windows launch restrictions and socket validation, implicit connection fallback, executor selection, daemon discovery, and the agents dashboard startup result. GitOrigin-RevId: e7fd63cf8690bcca8b5155266416f31f2f792aa2
codex-app-server-client
Shared in-process app-server client used by conversational CLI surfaces:
codex-execcodex-tui
Purpose
This crate centralizes startup and lifecycle management for an in-process
codex-app-server runtime, so CLI clients do not need to duplicate:
- app-server bootstrap and initialize handshake
- in-memory request/event transport wiring
- lifecycle orchestration around caller-provided startup identity
- graceful shutdown behavior
Startup identity
Callers pass both the app-server SessionSource and the initialize
client_info.name explicitly when starting the facade.
That keeps thread metadata (for example in thread/list and thread/read)
aligned with the originating runtime without baking TUI/exec-specific policy
into the shared client layer.
Transport model
The in-process path uses typed channels:
- client -> server:
ClientRequest/ClientNotification - server -> client:
InProcessServerEventServerRequestServerNotificationLegacyNotification
JSON serialization is still used at external transport boundaries (stdio/websocket), but the in-process hot path is typed.
Typed requests still receive app-server responses through the JSON-RPC result envelope internally. That is intentional: the in-process path is meant to preserve app-server semantics while removing the process boundary, not to introduce a second response contract.
Bootstrap behavior
The client facade starts an already-initialized in-process runtime, but thread bootstrap still follows normal app-server flow:
- caller sends
thread/startorthread/resume - app-server returns the immediate typed response
- richer session metadata may arrive later as a
SessionConfiguredlegacy event
Surfaces such as TUI and exec may therefore need a short bootstrap phase where they reconcile startup response data with later events.
Backpressure and shutdown
- Command queues and the embedded runtime remain bounded, using
DEFAULT_IN_PROCESS_CHANNEL_CAPACITYby default. - The facade's local consumer event queue is unbounded and preserves notification order. This keeps the worker draining the bounded runtime while a caller waits for a request, preventing unread notifications from blocking its response.
shutdown()performs a bounded graceful shutdown and then aborts if timeout is exceeded.