I use

parity --light
geth  --syncmode "light"

I would like to listen smart contract Event. Do I need to download all blockchain on local PC or light mode will be enough?


It depends your needs and the trust you have in third-party nodes. The light mode is enough if you just care about listening to the events.

You can use Infura's websocket instead of syncing in light mode or "full" mode.

  • thanks. You save my day! – Alex Apr 14 at 6:38

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