Why MongooseIM closes the websocket connection after 60 seconds?

I am using MongooseIM as chat server and connecting it over websocket using xmpp.js inside react-native application. The server forcefully closes the connection after 60s on inactivity. I want to know:

1. If this is the default config?
2. Should/Can I change it?
3. Should I set up ping mechanism such that my client must send some pings after every 60s to avoid disconnect

WebSocket connections have default timeout value for inactivity set to infinity. Your configuration most probably contains "{timeout, 60000}" in the "mod_websockets" configuration. In order to keep idle connections connected to the server you can send WebSocket ping frames from time to time.

More info about "mod_websockets" configuration is here:: https://mongooseim.readthedocs.io/en/latest/advanced-configuration/Listener-modules/#http-based-services-bosh-websocket-rest-ejabberd_cowboy

You can even configure the server to send WebSocket's ping frames by specifying the option {ping_rate, ValueInMilliSeconds}