detect LiveQuery connected clients on parse Server

Question

how do i can detect when client connects via liveQuery to parse server. I want to updata some data in MongoDB on client's Disconnect Event by Server. Log display on Server but how i can call some function after detection of this event.

I am using self hosted Parse SErver.

thanks in advance

Answer 1

Here you go:

Parse.Cloud.onLiveQueryEvent( ({event, clients, subscriptions, error}) => {
  if (event !== 'ws_disconnect') {
    return;
  }
  // Do your magic
});

In case you were wondering, these are the currently emitted events:

• connect
• subscribe
• unsubscribe
• ws_connect
• ws_disconnect
• ws_disconnect_error

"connect" differs from "ws_connect", the former means that the client completed the connect procedure as defined by Parse livequery protocol, where "ws_connect" just means that a new websocket was created.