* fix: move TMUX_TMPDIR to /tmp to avoid socket errors on mounted volumes
Some filesystems (NFS, CIFS, certain FUSE/overlay mounts used by Docker
bind-mounts) do not support Unix domain sockets. When TMUX_TMPDIR pointed
to ~/.openhands/agent-canvas/tmux/ inside a container, tmux failed with:
error connecting to .../tmux-10001/openhands (Operation not supported)
Move tmux socket directory to /tmp/openhands-agent-canvas-tmux which is
always on a local/tmpfs filesystem that supports Unix sockets. Tmux
sockets are ephemeral and don't need persistence across restarts.
Co-authored-by: openhands <openhands@all-hands.dev>
* refactor: drop explicit TMUX_TMPDIR from dev-docker.mjs, use system default
Per review feedback — the container's default TMUX_TMPDIR (/tmp) already
supports Unix domain sockets, so there's no need to set it explicitly.
Co-authored-by: openhands <openhands@all-hands.dev>
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Co-authored-by: openhands <openhands@all-hands.dev>
* feat: add dynamic port allocation with preferred port fallback
Implement dynamic port allocation for dev entrypoint scripts to gracefully
handle port conflicts. When a preferred port is busy, the system automatically
finds an alternative available port.
Changes:
- Add findFreePort() and findFreePorts() utilities to dev-safe.mjs
- Add buildSafeDevConfigAsync() for async config with dynamic allocation
- Update dev-with-automation.mjs to use async buildConfig with dynamic ports
- Update dev-static.mjs to use async buildConfig
- Add strictPort: true to vite.config.ts to fail-fast on conflicts
- Update tests for async buildConfig
The utilities try the preferred/default ports first, falling back to
OS-assigned ports only when needed. This preserves predictable defaults
while gracefully handling port conflicts.
Closes#222
* fix: address review feedback - add max retry, document race condition, improve tests
- Add max retry count (100 attempts) to port allocation loop to prevent
infinite loops
- Fix findFreePort to handle preferredPort=0 correctly by skipping the
port check and going straight to OS assignment
- Document race condition limitation in findFreePort JSDoc (accepted
limitation with guidance on handling EADDRINUSE)
- Clarify JSDoc for buildSafeDevConfig vs buildSafeDevConfigAsync with
clear guidance on when to use each
- Remove misleading 'must be after prereq check' comment
- Add comprehensive tests for findFreePort, findFreePorts, and
buildSafeDevConfigAsync using actual port blocking
- Improve buildConfig tests with port uniqueness verification and
fallback tests using high ports
- Use high ports (19xxx range) in tests to avoid conflicts with
system services
Co-authored-by: openhands <openhands@all-hands.dev>
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Co-authored-by: openhands <openhands@all-hands.dev>
Mirrors the dev:automation backend stack (agent-server + automation +
ingress) but serves a production frontend build through a small static
server instead of Vite. Designed for use over flaky / high-RTT links
where Vite's ~1000 ESM module fetches make full reloads painfully slow:
hashed assets are now sent with public/immutable cache headers, so an
SPA reload is ~1 round-trip (304 on index.html) and zero asset fetches.
scripts/static-server.mjs: combined static-file server + reverse proxy.
A drop-in for sirv-cli that additionally proxies the same prefixes Vite
proxies in dev (/api, /api/automation, /sockets, /server_info, /alive,
/health, /ready) so hitting :3001 directly behaves like Vite's dev
server — without it, sirv-cli's --single fallback turns /server_info
into the SPA shell whenever a tunnel exposes the static port instead of
the ingress port. Caches /assets/* immutable, index.html no-cache,
weak ETags.
scripts/dev-static.mjs: orchestrator that builds the frontend, then
spawns agent-server, automation, static-server, and the existing
ingress with the same route table as dev-with-automation.
scripts/dev-safe.mjs: add isPortBusy() and
releaseStaleConversationLeases() helpers. The agent-server tags each
conversation directory with an owner_lease.json keyed to a per-process
owner_instance_id (45 s TTL, heartbeat-renewed) and skip-loads any
conversation whose lease is held by a different instance. If the
previous agent-server died ungracefully — or you restart inside the
TTL window — every existing conversation becomes invisible to the new
instance until the leases age out. dev:static now port-checks for a
live agent-server (aborts on conflict), then unlinks stale leases so
conversations created by npm run dev are immediately visible.
Co-authored-by: openhands <openhands@all-hands.dev>
