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[test] Test logic to query DNS seeds with block-relay-only connections

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When a node is able to properly shutdown, it will persist its block-relay-only
connections to the addrman. On startup, it will attempt to reconnect to these
anchors. Since block-relay-only connections do not participate in ADDR relay,
succesful connections are insufficient to skip querying the DNS seeds.

This test fails prior to the changes in #22013.

Co-authored-by: Martin Zumsande <mzumsande@gmail.com>
This commit is contained in:
Amiti Uttarwar 2021-05-28 13:49:29 -07:00
parent 9c08719778
commit 75c05af361
1 changed files with 18 additions and 0 deletions
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18
test/functional/p2p_dns_seeds.py
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@ -16,6 +16,7 @@ class P2PDNSSeeds(BitcoinTestFramework):
def run_test(self):
self.existing_outbound_connections_test()
self.existing_block_relay_connections_test()
def existing_outbound_connections_test(self):
# Make sure addrman is populated to enter the conditional where we
@ -29,6 +30,23 @@ class P2PDNSSeeds(BitcoinTestFramework):
for i in range(2):
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i, connection_type="outbound-full-relay")
def existing_block_relay_connections_test(self):
# Make sure addrman is populated to enter the conditional where we
# delay and potentially skip DNS seeding. No-op when run after
# existing_outbound_connections_test.
self.nodes[0].addpeeraddress("192.0.0.8", 8333)
self.log.info("Check that we *do* query DNS seeds if we only have 2 block-relay-only connections")
self.restart_node(0)
with self.nodes[0].assert_debug_log(expected_msgs=["Loading addresses from DNS seed"], timeout=12):
# This mimics the "anchors" logic where nodes are likely to
# reconnect to block-relay-only connections on startup.
# Since we do not participate in addr relay with these connections,
# we still want to query the DNS seeds.
for i in range(2):
self.nodes[0].add_outbound_p2p_connection(P2PInterface(), p2p_idx=i, connection_type="block-relay-only")
if __name__ == '__main__':
P2PDNSSeeds().main()