chainlib/cic_tools/eth/nonce.py

33 lines
605 B
Python
Raw Normal View History

2021-02-09 09:42:46 +01:00
# third-party imports
from hexathon import (
add_0x,
strip_0x,
)
# local imports
from cic_tools.eth.method import (
jsonrpc_template,
)
def nonce(address):
o = jsonrpc_template()
o['method'] = 'eth_getTransactionCount'
o['params'].append(address)
o['params'].append('pending')
return o
class DefaultNonceOracle:
def __init__(self, address, conn):
self.address = address
self.conn = conn
def next(self):
o = nonce(self.address)
r = self.conn.do(o)
n = strip_0x(r)
return int(n, 16)