Options

Every collaboration server flag and environment variable, with its default.

Every option exists as a command-line flag and as an environment variable.

Flag	Variable	Default	Purpose
`-addr`	`COLLAB_HOST`, `COLLAB_PORT`	`:7878` (all interfaces)	Listen address and port.
`-password`	`COLLAB_PASSWORD`	empty	Password required from clients. Set one.
`-data`	`COLLAB_DATA_DIR`	`data`, relative to the current directory	Database `collab.db`, logs, and the control file. Always pass an absolute path.
`-log`	`COLLAB_LOG_FILE`	empty, or `<data>/server.log` with `-detach`	Also write logs to a file.
`-tls-cert`, `-tls-key`	`COLLAB_TLS_CERT`, `COLLAB_TLS_KEY`	empty	Serve `wss://` directly. See Internet.
`-max-room-clients`	`COLLAB_MAX_ROOM_CLIENTS`	`64`	Maximum people in one room.
`-no-tray`	`COLLAB_NO_TRAY=1`	icon shown on Windows	Hide the taskbar notification icon.
	`COLLAB_LANG`	operating system language	Language of the server UI and logs, for example `fr`, `de`, or `ja`.
`-detach`			Start in the background with no window, then return.
`-stop`			Stop the server that uses the same `-data`.
`-healthcheck`			Exit code 0 when the local server answers. For monitoring.
`-check-update`			Print whether a newer GitHub release exists, then exit. `0` is up to date, `2` means one exists.
`-update`			Download the latest GitHub release and replace this executable.
`-auto-update`	`COLLAB_AUTO_UPDATE=1`	off	Install a newer release when the periodic check finds one.
	`COLLAB_UPDATE_CHECK=0`	on	Skip the periodic check and its log line.
	`COLLAB_UPDATE_INTERVAL`	`24h`	How often to check GitHub, for example `12h`.
	`COLLAB_GITHUB_REPO`	`400Interactive/EditorCollaboration_Server`	Release repository, written as `owner/name`.

-data is relative to the directory the process is started from. A double-click, a shortcut, and a scheduled task do not necessarily use the same one. Pass an absolute path, and pass that same path to -detach and to -stop.

GET /health returns JSON including status, protocolVersion, and, when known, pluginVersion. After a successful update check it also includes updateAvailable, latestVersion, and releaseUrl. marketplaceUrl is included when the release was built with one. The plugin refuses to stay connected when the protocol number does not match its own.