web3_clientVersion | Fantom

Fantom API method that returns the client type and version running on the Fantom node. This information can be useful to developers to verify that a node they are connecting to is compatible with their needs.

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Parameters

• none

Response

• string — a string identifying the type of client, version, operating system, and language version running on the node

web3_clientVersion code examples

const { Web3 } = require("web3");
const NODE_URL = "CHAINSTACK_NODE_URL";
const web3 = new Web3(NODE_URL);

async function getClient() {
  const client = await web3.eth.getNodeInfo();
  console.log(client);
}

getClient();

const ethers = require('ethers');
const NODE_URL = "CHAINSTACK_NODE_URL";
const provider = new ethers.JsonRpcProvider(NODE_URL);

const clientVersion = async () => {
  const version = await provider.send("web3_clientVersion");
  console.log(`Client version: ${version}`);
};

clientVersion();

from web3 import Web3  
node_url = "CHAINSTACK_NODE_URL"
web3 = Web3.HTTPProvider(node_url)

client_version = web3.provider.make_request('web3_clientVersion', [])
print(client_version)

Use case

A use case for the web3_clientVersion method can be to verify which client is running to then decide which method to run.

Let's say you have a DApp that needs to retrieve all of the transaction receipts in a block; the Erigon client has a method for this, eth_getBlockReceipts, but with Geth, this method is only available starting from V1.13.0. You can use the web3_clientVersion method in your logic to identify which client you are using to see if you have the method available.

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Read Expanding your blockchain horizons: The eth_getBlockReceipts emulator to learn how to build a program to emulate eth_getBlockReceipts on any EVM-compatible chain.

Try the web3_clientVersion RPC method yourself