Filters are based on polling even when connected via Websocket, right?

[fbit]

I really like the functional API for filters.

However it seems like event filtering is accomplished via polling in the background. It's not instantly push based, even when I connect to a node via Websocket.

For example this one fires every ~5 seconds instead of popping up instantly when a new block is added:

web3j.blockFlowable(false).subscribe(block -> {
log.info("NEW BLOCK -> " + block.getBlock().getNumber().intValue());
});

Or did I miss something?

[mohamedelshami]

Yes, is this still polling, subscribing to new blocks is supported in WebSocketService; here is an example

[fbit]

Thank you! Is there also a way to listen to contract events via push?