session/closed

A loaded session was unloaded (idle | hostShutdown) with the final view cursor; broadcast to every initialized connection.

Parameters

Type: SessionClosedParams

session/closed params: a loaded session was unloaded from this host, broadcast to every initialized connection. After it, the session is notLoaded; the log remains on disk and session/resume reloads it. A crash emits nothing — only the two orderly unload paths do, and both write the durable SessionEnd record first.

Field	Type	Stability	Presence	Description
reason	SessionClosedReason		required	Which orderly unload path fired.
sessionId	string		required	The unloaded session.
viewCursor	string | null		required	The final view head; a client that stores it can later session/resume {cursor} and receive exactly the (empty) suffix. An opaque view cursor: clients relay it, never parse it. Required-nullable: the producers always write the member and write null when the final fold failed at unload — the host defines no cursor values of its own and never invents one, and the subscriber still learns the session closed.

Source

schema/msp/experimental/msp.schema.json#/notifications/session~2Fclosed

{
  "description": "A loaded session was unloaded (idle | hostShutdown) with the final view cursor; broadcast to every initialized connection.",
  "params": {
    "$ref": "#/$defs/SessionClosedParams"
  }
}