Files
bitcoin/test/functional/rpc_echo_payload.py
MarcoFalke fa7bc26d12 test: Check that RPCs do not time out, even under load
Also, modify send_cli, so that the test can be run under --usecli
2026-08-06 13:36:23 +02:00

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Python
Executable File

#!/usr/bin/env python3
# Copyright (c) The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or https://opensource.org/license/mit/.
"""Ensure RPCs with a (possibly large) payload will either be rejected or handled, but will never time out."""
from concurrent.futures import ThreadPoolExecutor
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal, JSONRPCException
import random
class RpcEchoPayloadTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.setup_clean_chain = True
self.extra_args = [["-rpcworkqueue=2", "-rpcthreads=2"]]
# enough to possibly fill the running threads as well as the queue:
self.num_threads = 6
def run_test(self):
node = self.nodes[0]
# Use json-serializable, but non-hex data
data = "z" + random.randbytes(1_999_000).hex()
def check_results(rpc):
self.log.info("Starting thread ...")
for i in range(200):
payload = data[: random.randrange(0, len(data))]
try:
if random.getrandbits(1):
assert_equal(payload, rpc.echo(payload)[0])
else:
rpc.sendrawtransaction(payload)
except JSONRPCException as e:
msg = e.error["message"]
if msg not in [
"TX decode failed. Make sure the tx has at least one input.",
"non-JSON HTTP response with '503 Service Unavailable' from server: Work queue depth exceeded",
]:
raise AssertionError(f"Unexpected msg: {msg}")
rpcs = [node.create_new_rpc_connection() for _ in range(self.num_threads)]
self.log.info("Starting threadpool ...")
with ThreadPoolExecutor(max_workers=len(rpcs)) as threads:
list(threads.map(check_results, rpcs))
if __name__ == "__main__":
RpcEchoPayloadTest(__file__).main()