[v1.2.1] Connection not Open.

[NakOh]

Description

Expected behavior

I get an error periodically.

maybe

web3.eth.getBalance or web.eth.getBlock .. etc

Actual behavior

Steps to reproduce the behavior

[nivida]

Thanks for opening this issue! Could you provide an explicit example setup to reproduce this issue?

[NakOh]

It's so simple.

just

const web3 = new Web3('ws://' + serverList[0].host + ":" + serverList[0].port);
web3.setProvider('ws://' + serverList[0].host + ":" + serverList[0].port);

connect Socket.

		var endBlockNumber = await web3.eth.getBlockNumber();

or

	var amounts = await web3.eth.getBalance('MyAddress');

Call Web.eth function.

Somtimes I got 'Connection not Open Error' !!!

i'm going crazy..

It happens only occasionally, so it's going crazy.

[nivida]

Thanks. This got fixed in the 2.x branch and will be back-ported asap.

[fengyh13]

I got this error too. It happens only occasionally! And eth.subscribe('newBlockHeaders') cannot get data anymore

[nivida]

@fengyh13 Thanks for letting us know about! We do currently improve the WebsocketProvider and the handling of providers in web3.js with PR #3190 and will release the changes as soon as anything is ready.

[cgewecke]

This should be resolved with the recent Websockets upgrade. You can configure the provider to automatically reconnect if your connection is unstable.

Relevant docs