Frame the 2025-11-25 leading "priming" SSE event: an id: line carrying the
stream's next event id followed by an empty data: field (basic/transports
§Sending Messages item 6 — "an SSE event consisting of an event ID and an
empty data field in order to prime the client to reconnect"). The empty data
line is required so it parses as a real SSE event (and thus updates the
client's last event id), while carrying no JSON-RPC payload.
Frame the 2025-11-25 leading "priming" SSE event: an id: line carrying the stream's next event id followed by an empty data: field (basic/transports §Sending Messages item 6 — "an SSE event consisting of an event ID and an empty data field in order to prime the client to reconnect"). The empty data line is required so it parses as a real SSE event (and thus updates the client's last event id), while carrying no JSON-RPC payload.