tests: Use unique port for ZMQ tests

The ZMQ interface tests should use unique ports as we do for the p2p and
rpc ports so that multiple instances of the test can be run at the same
time.

1 files changed, 9 insertions, 7 deletions

diff --git a/test/functional/interface_zmq.py b/test/functional/interface_zmq.py
index 00cd3b4894..5357bdf2b8 100755
--- a/test/functional/interface_zmq.py
+++ b/test/functional/interface_zmq.py
@@ -22,6 +22,7 @@ from test_framework.messages import (
 from test_framework.util import (
     assert_equal,
     assert_raises_rpc_error,
+    p2p_port,
 )
 from test_framework.wallet import (
     MiniWallet,
@@ -106,6 +107,7 @@ class ZMQTest (BitcoinTestFramework):
         # This test isn't testing txn relay/timing, so set whitelist on the
         # peers for instant txn relay. This speeds up the test run time 2-3x.
         self.extra_args = [["-whitelist=noban@127.0.0.1"]] * self.num_nodes
+        self.zmq_port_base = p2p_port(self.num_nodes + 1)
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_py3_zmq()
@@ -179,7 +181,7 @@ class ZMQTest (BitcoinTestFramework):
         # Invalid zmq arguments don't take down the node, see #17185.
         self.restart_node(0, ["-zmqpubrawtx=foo", "-zmqpubhashtx=bar"])
 
-        address = 'tcp://127.0.0.1:28332'
+        address = f"tcp://127.0.0.1:{self.zmq_port_base}"
         subs = self.setup_zmq_test([(topic, address) for topic in ["hashblock", "hashtx", "rawblock", "rawtx"]])
 
         hashblock = subs[0]
@@ -246,7 +248,7 @@ class ZMQTest (BitcoinTestFramework):
 
     def test_reorg(self):
 
-        address = 'tcp://127.0.0.1:28333'
+        address = f"tcp://127.0.0.1:{self.zmq_port_base}"
 
         # Should only notify the tip if a reorg occurs
         hashblock, hashtx = self.setup_zmq_test(
@@ -300,7 +302,7 @@ class ZMQTest (BitcoinTestFramework):
         <32-byte hash>A<8-byte LE uint> : Transactionhash added mempool
         """
         self.log.info("Testing 'sequence' publisher")
-        [seq] = self.setup_zmq_test([("sequence", "tcp://127.0.0.1:28333")])
+        [seq] = self.setup_zmq_test([("sequence", f"tcp://127.0.0.1:{self.zmq_port_base}")])
         self.disconnect_nodes(0, 1)
 
         # Mempool sequence number starts at 1
@@ -444,7 +446,7 @@ class ZMQTest (BitcoinTestFramework):
         """
 
         self.log.info("Testing 'mempool sync' usage of sequence notifier")
-        [seq] = self.setup_zmq_test([("sequence", "tcp://127.0.0.1:28333")])
+        [seq] = self.setup_zmq_test([("sequence", f"tcp://127.0.0.1:{self.zmq_port_base}")])
 
         # In-memory counter, should always start at 1
         next_mempool_seq = self.nodes[0].getrawmempool(mempool_sequence=True)["mempool_sequence"]
@@ -549,8 +551,8 @@ class ZMQTest (BitcoinTestFramework):
         # chain lengths on node0 and node1; for this test we only need node0, so
         # we can disable syncing blocks on the setup)
         subscribers = self.setup_zmq_test([
-            ("hashblock", "tcp://127.0.0.1:28334"),
-            ("hashblock", "tcp://127.0.0.1:28335"),
+            ("hashblock", f"tcp://127.0.0.1:{self.zmq_port_base + 1}"),
+            ("hashblock", f"tcp://127.0.0.1:{self.zmq_port_base + 2}"),
         ], sync_blocks=False)
 
         # Generate 1 block in nodes[0] and receive all notifications
@@ -567,7 +569,7 @@ class ZMQTest (BitcoinTestFramework):
         self.log.info("Testing IPv6")
         # Set up subscriber using IPv6 loopback address
         subscribers = self.setup_zmq_test([
-            ("hashblock", "tcp://[::1]:28332")
+            ("hashblock", f"tcp://[::1]:{self.zmq_port_base}")
         ], ipv6=True)
 
         # Generate 1 block in nodes[0]