On Windows, os.kill(pid, 0) calls TerminateProcess which kills the process
instead of checking liveness. Use ctypes OpenProcess for Windows, keeping
os.kill(pid, 0) for Unix. Affects list_sessions(), tunnel PID checks, and
_handle_sessions().
Wrap socket creation + connect in try/finally across 5 locations to
ensure sockets are closed when connect() raises. Previously, failed
connections leaked file descriptors until GC ran.
Unify all CLI-managed files under ~/.browser-use/ (config, sockets, PIDs,
binaries, tunnels) instead of scattering across ~/.config/browser-use/ and
~/.browser-use/run/. Add profile-use Go binary as managed subcommand via
browser-use profile, with auto-download fallback and install.sh integration.
Wire cloudflared and profile-use availability checks into browser-use doctor.
Adds `--connect` to auto-discover running Chrome instances via DevToolsActivePort
files and well-known port probing, eliminating manual CDP URL construction. Fixes
daemon process hanging on `close` when connected to external browsers (--connect,
--cdp-url, cloud) by calling stop() (disconnect) instead of kill() (terminate).
Replace the multi-session server (server.py, SessionRegistry, portalocker locking,
PID files, orphan detection) with a minimal daemon (daemon.py) that holds one
BrowserSession in memory. Socket file existence = alive. Auto-exits when browser
dies via CDP watchdog.
-2277 lines, +142 lines across 20 files.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The session server had a race condition where concurrent CLI calls could
spawn multiple server processes. The old server would be orphaned when
the new one overwrote the PID file and deleted its socket.
Changes:
- Add flock-based locking using portalocker (already a dependency)
- Server acquires exclusive lock before writing PID file
- CLI checks both is_server_running() AND is_session_locked()
- Add kill_orphaned_server() to clean up servers with PID but no lock
- Increase socket timeout from 0.1s to 0.5s for reliability
- cleanup_session_files() now removes .lock and .meta files
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Use ctypes.OpenProcess on Windows for process existence check
(os.kill raises WinError 87 or SystemError on Windows)
- Use 127.0.0.1 instead of localhost to avoid IPv6 binding issues
- Add reuse_address=True to asyncio.start_server for TCP port reuse
Fixes issues reported in:
- #3912 (os.kill fails on Windows)
- #3918 (WinError 87 in is_server_running)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- auto-detects chrome executable and user data dir on macos/windows/linux
- auto-selects first available profile if none specified
- added Browser.list_chrome_profiles() to see available profiles
- updated examples to prompt user for profile selection
- fixed missing browser.stop() in save_cookies.py
Laith Weinberger