Connection Triggers

Run server code when a client connects or disconnects using addConnectionTrigger:

// When a client connects
addConnectionTrigger("open", function (admin, sessionId) {
    // Record session start time
    update(["sessions", admin.uid, sessionId], {
        start: Date.now()
    });
});

// When a client disconnects
addConnectionTrigger("close", function (admin, sessionId) {
    // Record session end time
    update(["sessions", admin.uid, sessionId], {
        end: Date.now()
    });
});

Action Types

• "open" - Fires when a client establishes a WebSocket connection
• "close" - Fires when a client disconnects (browser close, network drop, or explicit close)

Callback Arguments

Your callback receives (admin, sessionId):

• admin - The standard auth context object — see Auth Context for the full shape
• sessionId - Unique ID for this WebSocket session