Websocket logs subscription not supported by Geth Client

[Ruj89]

Platform: node:lts-alpine Docker image
Ganache: v7.0.0
Node: v16.13.2
npm: 8.1.2
Go: 1.17.4
go-ethereum: v1.10.15

Description:

When I receive a log, after a subscription, the go-ethereum library try to send through a chan the Log typed object, but it cannot marshal the Ganache websocket message:

json: cannot unmarshal array into Go value of type types.Log

Steps to reproduce:

1. Deploy a smart contract;
2. Listen to the ganache ws endpoint for a event with a Geth client;
3. Execute a smart contract method that calls an event.

Expected result:
The Ganache WS server sends a canonical event message JSON object to Geth client.

Actual result:
The Ganache WS server sends an array of objects to Geth client.

Notes:
On Ganache CLI v6.12.2 the JSON event message was correctly parsed.

[davidmurdoch]

Hi, thanks for opening the issue. We'll look into it!

[ndzik]

Just for completeness and because I just encountered this issue: I can confirm this.

json: cannot unmarshal array into Go value of type types.Log errors for subscriptions with Ganache: v7.0.1.

I can also confirm that Ganache CLI v6.12.2 works as expected for the time being (:

[davidmurdoch]

@ndzik Thanks for the additional confirmation. We've found the root cause and are working on a fix now.

[MicaiahReid]

This should be fixed in v7.0.2!