Question concerning anvil, docker and websockets

[arondius]

Hi guys :)

Hope you can help met out.

Question concerning anvil, docker and websockets:

I have a docker compose project:

version: '3.8'

services:

  anvil:
    image: ghcr.io/foundry-rs/foundry:latest
    env_file:
      - .env
    environment:
      - ANVIL_FORK_URL=${ANVIL_FORK_URL}
    ports:
      - 8545:8545
    container_name: anvil
    entrypoint: anvil -f $ANVIL_FORK_URL --host 0.0.0.0

  src:
    build:
      context: .
      dockerfile: ./Dockerfile
    container_name: src_container

The src container is a Typescript node app with EthersJs to set up a websocket provider. When running agains mainnet the app can succesfully subscribe to websocket events.

When using the Anvil local fork, it can connect to anvil through the ws://anvil:8545 docker container, I can see the connection in the anvil container logs.
However there is no subscription data coming in to my app

Going into the src container and doing a

> {"id":1,"jsonrpc":"2.0","method":"eth_subscribe","params":["newHeads"]}
< {"jsonrpc":"2.0","id":1,"result":"0x5536365230446d756177526b31727479"}

The above results in only one piece of data, not a stream of data

What am i missing?

[stevekeol]

Is there anybody help this issue?

[L8D]

I'm seeing the same behavior when trying to use Ethers.js with Anvil over websockets. It appears that this issue also happens with Hardhat Node and Ganache as well. Very strange.