Closed
Description
The estimateGas() function is relied upon in various functions in the test_commands and zeth_helper (e.g. test_commands/deploy_test_token.py (in mint) and zeth_helper token-approve) to set the gas of a transaction. Nevertheless, some unexpected behaviors arose when pointing to a non-validator RPC endpoint which for some reason triggered an error:
Traceback (most recent call last):
File "../test_commands/deploy_test_token.py", line 123, in <module>
deploy_test_token() # pylint: disable=no-value-for-parameter
File "$ZETH/client/env/lib/python3.7/site-packages/click/core.py", line 764, in __call__
return self.main(*args, **kwargs)
File "$ZETH/client/env/lib/python3.7/site-packages/click/core.py", line 717, in main
rv = self.invoke(ctx)
File "$ZETH/client/env/lib/python3.7/site-packages/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "$ZETH/client/env/lib/python3.7/site-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "../test_commands/deploy_test_token.py", line 54, in deploy_test_token
EtherValue(mint_amount, 'ether'))
File "../test_commands/deploy_test_token.py", line 119, in mint_token
sender_eth_private_key=deployer_private_key)
File "$ZETH/client/zeth/core/contracts.py", line 359, in send_contract_call
transaction = call.buildTransaction(tx_desc)
File "$ZETH/client/env/lib/python3.7/site-packages/web3/contract.py", line 1228, in buildTransaction
**self.kwargs
File "$ZETH/client/env/lib/python3.7/site-packages/web3/contract.py", line 1512, in build_transaction_for_function
prepared_transaction = fill_transaction_defaults(web3, prepared_transaction)
File "cytoolz/functoolz.pyx", line 232, in cytoolz.functoolz.curry.__call__
File "$ZETH/client/env/lib/python3.7/site-packages/web3/utils/transactions.py", line 55, in fill_transaction_defaults
default_val = default_getter(web3, transaction)
File "$ZETH/client/env/lib/python3.7/site-packages/web3/utils/transactions.py", line 26, in <lambda>
'gas': lambda web3, tx: web3.eth.estimateGas(tx),
File "$ZETH/client/env/lib/python3.7/site-packages/web3/eth.py", line 304, in estimateGas
[transaction],
File "$ZETH/client/env/lib/python3.7/site-packages/web3/manager.py", line 112, in request_blocking
raise ValueError(response["error"])
ValueError: {'code': -32000, 'message': 'method handler crashed'}
This is likely not to be an error related to Zeth, but I'm raising this issue here to investigate this futher and then either fix it, or open an issue against the right repo (blockchain client, or web3py).
[EDIT:] The fact that TLS-enabled nodes triggered the crash was an "unfortunate coincidence", see https://github.com/clearmatics/autonity/issues/681 for more details