Infura may be drop Websocket after few time

Questions
1

i’m try to trace erc20 with events and subscribe by Web3js and provider i’m used websocket wss://rinkeby.infura.io/ws

but something wrong when i’m running script about 1-2 hour my events and subscribe is idle

Is infura dropped my WS ?

2

Can you provide us a code snippet of what your trying to do and the error output you’re receiving?

3