Unsupported Web3 Methods

[0xJchen]

(base) ➜  mev-inspect-py git:(main) ✗ ./mev inspect 13850154
Inspecting block 13850154
Skipping virtualenv creation, as specified in config file.
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/flashbot/.local/lib/python3.9/site-packages/click/core.py", line 1137, in __call__
    return self.main(*args, **kwargs)
  File "/home/flashbot/.local/lib/python3.9/site-packages/click/core.py", line 1062, in main
    rv = self.invoke(ctx)
  File "/home/flashbot/.local/lib/python3.9/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/flashbot/.local/lib/python3.9/site-packages/click/core.py", line 763, in invoke
    return __callback(*args, **kwargs)
  File "/app/mev_inspect/concurrency.py", line 18, in wrapper
    loop.run_until_complete(f(*args, **kwargs))
  File "/usr/local/lib/python3.9/asyncio/base_events.py", line 647, in run_until_complete
    return future.result()
  File "/app/cli.py", line 45, in inspect_block_command
    await inspector.inspect_single_block(
  File "/app/mev_inspect/inspector.py", line 56, in inspect_single_block
    return await inspect_block(
  File "/app/mev_inspect/inspect_block.py", line 68, in inspect_block
    await inspect_many_blocks(
  File "/app/mev_inspect/inspect_block.py", line 105, in inspect_many_blocks
    block = await create_from_block_number(
  File "/app/mev_inspect/block.py", line 31, in create_from_block_number
    block_timestamp, receipts, traces, base_fee_per_gas = await asyncio.gather(
  File "/app/mev_inspect/block.py", line 73, in _find_or_fetch_block_receipts
    return await _fetch_block_receipts(w3, block_number)
  File "/app/mev_inspect/block.py", line 110, in _fetch_block_receipts
    receipts_json = await w3.eth.get_block_receipts(block_number)
  File "/home/flashbot/.local/lib/python3.9/site-packages/web3/module.py", line 72, in caller
    result = await w3.manager.coro_request(method_str,
  File "/home/flashbot/.local/lib/python3.9/site-packages/web3/manager.py", line 203, in coro_request
    return self.formatted_response(response,
  File "/home/flashbot/.local/lib/python3.9/site-packages/web3/manager.py", line 168, in formatted_response
    raise ValueError(response["error"])
ValueError: {'code': -32602, 'message': 'Invalid params', 'data': 'invalid type: integer `13850154`, expected a string at line 1 column 8'}
command terminated with exit code 1

In the poetry file, it shows it is using web3=5.23 while I tried this version locally and there's no method called get_block_receipts. Has anyone met a similar problem before?

[0xr3x]

I've seen this before, and it is to do with the RPC you are using. Try using an ANKR RPC! :)

[0xr3x]

#319

[0xJchen]

#319

Hi ser, thanks for poiting it out. It went smoothly with ankr rpc :)

I am now testing it with my RETH node with trace API enabled. The strange thing is that the error seems have to do with get_block_receipts method in web3.eth module?

[0xJchen]

#319

Solved this problem by modifying the block number from int to dex in block.py

async def _fetch_block_timestamp(w3, block_number: int) -> int:
    block_json = await w3.eth.get_block(hex(block_number))
    return block_json["timestamp"]


async def _fetch_block_receipts(w3, block_number: int) -> List[Receipt]:
    receipts_json = await w3.eth.get_block_receipts(hex(block_number))
    return [Receipt(**receipt) for receipt in receipts_json]


async def _fetch_block_traces(w3, block_number: int) -> List[Trace]:
    traces_json = await w3.eth.trace_block(hex(block_number))
    return [Trace(**trace_json) for trace_json in traces_json]

Is it standard practice to pass block numbers as integers, as used in the codebase?