eth_syncing - BSC

Example code for the eth_syncing JSON RPC method. Сomplete guide on how to use eth_syncing JSON RPC in GetBlock Web3 documentation.

This method returns information about the sync status of the node. When syncing, it returns an object with sync progress. When fully synced, it returns false.

Parameters

None

Request Example

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "params": [],
    "id": "getblock.io"
}'

const axios = require('axios');

const url = 'https://go.getblock.io/<ACCESS-TOKEN>/';

const payload = {
    jsonrpc: '2.0',
    method: 'eth_syncing',
    params: [],
    id: 'getblock.io'
};

axios.post(url, payload, {
    headers: { 'Content-Type': 'application/json' }
})
.then(response => {
    const result = response.data.result;
    if (result === false) {
        console.log('Node is fully synced');
    } else {
        console.log('Syncing:', result);
    }
})
.catch(error => console.error(error));

import requests

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = {
    "jsonrpc": "2.0",
    "method": "eth_syncing",
    "params": [],
    "id": "getblock.io"
}

response = requests.post(url, headers={"Content-Type": "application/json"}, json=payload)
result = response.json()["result"]
if result == False:
    print("Node is fully synced")
else:
    print(f"Syncing: {result}")

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();
    
    let payload = json!({
        "jsonrpc": "2.0",
        "method": "eth_syncing",
        "params": [],
        "id": "getblock.io"
    });

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);
    
    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": false
}

Response Parameters

Parameter

Type

Description

result

boolean/object

false if synced, object if syncing

Field

Type

Description

startingBlock

string

Block sync started

currentBlock

string

Current block

highestBlock

string

Highest known block

Use Cases

Check node health before queries
Monitor node synchronization
Verify RPC endpoint status
Build node monitoring dashboards

Error Handling

Error Code

Description

-32603

Internal error

SDK Integration

const { ethers } = require('ethers');

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

const syncStatus = await provider.send('eth_syncing', []);
console.log('Syncing:', syncStatus);

import { createPublicClient, http } from 'viem';
import { bsc } from 'viem/chains';

const client = createPublicClient({
    chain: bsc,
    transport: http('https://go.getblock.io/<ACCESS-TOKEN>/')
});

const syncStatus = await client.request({ method: 'eth_syncing' });
console.log('Syncing:', syncStatus);

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