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#!/usr/bin/env python3
# Copyright (c) 2020-2021 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 add_outbound_p2p_connection test framework functionality"""
from test_framework.p2p import P2PInterface
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
check_node_connections,
)
class P2PFeelerReceiver(P2PInterface):
def on_version(self, message):
# The bitcoind node closes feeler connections as soon as a version
# message is received from the test framework. Don't send any responses
# to the node's version message since the connection will already be
# closed.
pass
class P2PAddConnections(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 2
def setup_network(self):
self.setup_nodes()
# Don't connect the nodes
def run_test(self):
self.log.info("Add 8 outbounds to node 0")
for i in range(8):
self.log.info(f"outbound: {i}")
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i, connection_type="outbound-full-relay")
self.log.info("Add 2 block-relay-only connections to node 0")
for i in range(2):
self.log.info(f"block-relay-only: {i}")
# set p2p_idx based on the outbound connections already open to the
# node, so add 8 to account for the previous full-relay connections
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i + 8, connection_type="block-relay-only")
self.log.info("Add 2 block-relay-only connections to node 1")
for i in range(2):
self.log.info(f"block-relay-only: {i}")
self.nodes[1].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i, connection_type="block-relay-only")
self.log.info("Add 5 inbound connections to node 1")
for i in range(5):
self.log.info(f"inbound: {i}")
self.nodes[1].add_p2p_connection(P2PInterface())
self.log.info("Add 8 outbounds to node 1")
for i in range(8):
self.log.info(f"outbound: {i}")
# bump p2p_idx to account for the 2 existing outbounds on node 1
self.nodes[1].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i + 2)
self.log.info("Check the connections opened as expected")
check_node_connections(node=self.nodes[0], num_in=0, num_out=10)
check_node_connections(node=self.nodes[1], num_in=5, num_out=10)
self.log.info("Disconnect p2p connections & try to re-open")
self.nodes[0].disconnect_p2ps()
check_node_connections(node=self.nodes[0], num_in=0, num_out=0)
self.log.info("Add 8 outbounds to node 0")
for i in range(8):
self.log.info(f"outbound: {i}")
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i)
check_node_connections(node=self.nodes[0], num_in=0, num_out=8)
self.log.info("Add 2 block-relay-only connections to node 0")
for i in range(2):
self.log.info(f"block-relay-only: {i}")
# bump p2p_idx to account for the 8 existing outbounds on node 0
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i + 8, connection_type="block-relay-only")
check_node_connections(node=self.nodes[0], num_in=0, num_out=10)
self.log.info("Restart node 0 and try to reconnect to p2ps")
self.restart_node(0)
self.log.info("Add 4 outbounds to node 0")
for i in range(4):
self.log.info(f"outbound: {i}")
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i)
check_node_connections(node=self.nodes[0], num_in=0, num_out=4)
self.log.info("Add 2 block-relay-only connections to node 0")
for i in range(2):
self.log.info(f"block-relay-only: {i}")
# bump p2p_idx to account for the 4 existing outbounds on node 0
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i + 4, connection_type="block-relay-only")
check_node_connections(node=self.nodes[0], num_in=0, num_out=6)
check_node_connections(node=self.nodes[1], num_in=5, num_out=10)
self.log.info("Add 1 feeler connection to node 0")
feeler_conn = self.nodes[0].add_outbound_p2p_connection(P2PFeelerReceiver(), p2p_idx=6, connection_type="feeler")
# Feeler connection is closed
assert not feeler_conn.is_connected
# Verify version message received
assert_equal(feeler_conn.message_count["version"], 1)
# Feeler connections do not request tx relay
assert_equal(feeler_conn.last_message["version"].relay, 0)
if __name__ == '__main__':
P2PAddConnections().main()
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