68 lines
2.1 KiB
Python
68 lines
2.1 KiB
Python
import argparse
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import requests
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import time
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# Parse command-line arguments
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parser = argparse.ArgumentParser(description='Compare block hashes from two Ethereum RPC endpoints.')
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parser.add_argument('rpc_url_1', type=str, help='The first RPC URL')
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parser.add_argument('rpc_url_2', type=str, help='The second RPC URL')
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args = parser.parse_args()
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# Define the RPC endpoints from the command-line arguments
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rpc_url_1 = args.rpc_url_1
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rpc_url_2 = args.rpc_url_2
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# Define the JSON-RPC payload
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def get_block_by_number_payload(block_number):
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return {
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"jsonrpc": "2.0",
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"method": "eth_getBlockByNumber",
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"params": [hex(block_number), False],
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"id": 1
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}
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# Function to get the latest block number
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def get_latest_block_number(rpc_url):
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response = requests.post(rpc_url, json={
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"jsonrpc": "2.0",
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"method": "eth_blockNumber",
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"params": [],
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"id": 1
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})
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result = response.json()
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return int(result['result'], 16)
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# Function to get the block hash by block number
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def get_block_hash(rpc_url, block_number):
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response = requests.post(rpc_url, json=get_block_by_number_payload(block_number))
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result = response.json()
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return result['result']['hash']
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# Get the latest block number from the first RPC endpoint
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latest_block_number = get_latest_block_number(rpc_url_1)
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# Binary search-like approach to find the first matching block hash
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low = 0
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high = latest_block_number
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first_matching_block = None
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while low <= high:
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mid = (low + high) // 2
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hash_1 = get_block_hash(rpc_url_1, mid)
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hash_2 = get_block_hash(rpc_url_2, mid)
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if hash_1 == hash_2:
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first_matching_block = mid
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high = mid + 1 # Continue searching in the upper half
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else:
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low = mid - 1 # Continue searching in the lower half
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# Sleep for one second before the next comparison
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time.sleep(1)
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if first_matching_block is not None:
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print(f"The first matching block is {first_matching_block}")
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print(f"Block hash: {get_block_hash(rpc_url_1, first_matching_block)}")
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else:
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print("No matching block hash found.")
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