Is there any ethereum client for development and testing that supports websocket connection. I want to use the subscribe API in web3. testrpc does not support socket connection.


Testrpc is deprecated and ethereumjs-testrpc has been renamed to ganache-cli

Please use ganache-cli instead of testrpc for websocket support. Its now stable and can be installed using following command

npm install -g ganache-cli

Or if you a GUI tool to view and manage test blockchain please check following


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Hyperledger Besu does support websocket. See JSON-RPC API doc : https://besu.hyperledger.org/HowTo/Interact/APIs/RPC-PubSub/

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