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#!/usr/bin/env python3
# Copyright (c) 2016-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test various net timeouts.
- Create three peers:
no_verack_node - we never send a verack in response to their version
no_version_node - we never send a version (only a ping)
no_send_node - we never send any P2P message.
- Wait 1 second
- Assert that we're connected
- Send a ping to no_verack_node and no_version_node
- Wait 1 second
- Assert that we're still connected
- Send a ping to no_verack_node and no_version_node
- Wait 2 seconds
- Assert that we're no longer connected (timeout to receive version/verack is 3 seconds)
"""
from test_framework.messages import msg_ping
from test_framework.p2p import P2PInterface
from test_framework.test_framework import BitcoinTestFramework
import time
class TestP2PConn(P2PInterface):
def on_version(self, message):
# Don't send a verack in response
pass
class TimeoutsTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 1
# set timeout to receive version/verack to 3 seconds
self.extra_args = [["-peertimeout=3"]]
def mock_forward(self, delta):
self.mock_time += delta
self.nodes[0].setmocktime(self.mock_time)
def run_test(self):
self.mock_time = int(time.time())
self.mock_forward(0)
# Setup the p2p connections, making sure the connections are established before the mocktime is bumped
with self.nodes[0].assert_debug_log(['Added connection peer=0']):
no_verack_node = self.nodes[0].add_p2p_connection(TestP2PConn(), wait_for_verack=False)
with self.nodes[0].assert_debug_log(['Added connection peer=1']):
no_version_node = self.nodes[0].add_p2p_connection(TestP2PConn(), send_version=False, wait_for_verack=False)
with self.nodes[0].assert_debug_log(['Added connection peer=2']):
no_send_node = self.nodes[0].add_p2p_connection(TestP2PConn(), send_version=False, wait_for_verack=False)
# Wait until we got the verack in response to the version. Though, don't wait for the other node to receive the
# verack, since we never sent one
no_verack_node.wait_for_verack()
self.mock_forward(1)
assert no_verack_node.is_connected
assert no_version_node.is_connected
assert no_send_node.is_connected
with self.nodes[0].assert_debug_log(['Unsupported message "ping" prior to verack from peer=0']):
no_verack_node.send_message(msg_ping())
with self.nodes[0].assert_debug_log(['non-version message before version handshake. Message "ping" from peer=1']):
no_version_node.send_message(msg_ping())
self.mock_forward(1)
assert "version" in no_verack_node.last_message
assert no_verack_node.is_connected
assert no_version_node.is_connected
assert no_send_node.is_connected
no_verack_node.send_message(msg_ping())
no_version_node.send_message(msg_ping())
expected_timeout_logs = [
"version handshake timeout peer=0",
"socket no message in first 3 seconds, 1 0 peer=1",
"socket no message in first 3 seconds, 0 0 peer=2",
]
with self.nodes[0].assert_debug_log(expected_msgs=expected_timeout_logs):
self.mock_forward(2)
no_verack_node.wait_for_disconnect(timeout=1)
no_version_node.wait_for_disconnect(timeout=1)
no_send_node.wait_for_disconnect(timeout=1)
self.stop_nodes(0)
self.nodes[0].assert_start_raises_init_error(
expected_msg='Error: peertimeout must be a positive integer.',
extra_args=['-peertimeout=0'],
)
if __name__ == '__main__':
TimeoutsTest().main()
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