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#!/usr/bin/env python3
# Copyright (c) 2015-2016 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 the ZMQ API."""
import configparser
import os
import struct
from test_framework.test_framework import BitcoinTestFramework, SkipTest
from test_framework.util import (assert_equal,
bytes_to_hex_str,
)
class ZMQTest (BitcoinTestFramework):
def __init__(self):
super().__init__()
self.num_nodes = 2
def setup_nodes(self):
# Try to import python3-zmq. Skip this test if the import fails.
try:
import zmq
except ImportError:
raise SkipTest("python3-zmq module not available.")
# Check that bitcoin has been built with ZMQ enabled
config = configparser.ConfigParser()
if not self.options.configfile:
self.options.configfile = os.path.dirname(__file__) + "/../config.ini"
config.read_file(open(self.options.configfile))
if not config["components"].getboolean("ENABLE_ZMQ"):
raise SkipTest("bitcoind has not been built with zmq enabled.")
self.zmqContext = zmq.Context()
self.zmqSubSocket = self.zmqContext.socket(zmq.SUB)
self.zmqSubSocket.set(zmq.RCVTIMEO, 60000)
self.zmqSubSocket.setsockopt(zmq.SUBSCRIBE, b"hashblock")
self.zmqSubSocket.setsockopt(zmq.SUBSCRIBE, b"hashtx")
ip_address = "tcp://127.0.0.1:28332"
self.zmqSubSocket.connect(ip_address)
self.extra_args = [['-zmqpubhashtx=%s' % ip_address, '-zmqpubhashblock=%s' % ip_address], []]
self.add_nodes(self.num_nodes, self.extra_args)
self.start_nodes()
def run_test(self):
try:
self._zmq_test()
finally:
# Destroy the zmq context
self.log.debug("Destroying zmq context")
self.zmqContext.destroy(linger=None)
def _zmq_test(self):
genhashes = self.nodes[0].generate(1)
self.sync_all()
self.log.info("Wait for tx")
msg = self.zmqSubSocket.recv_multipart()
topic = msg[0]
assert_equal(topic, b"hashtx")
body = msg[1]
msgSequence = struct.unpack('<I', msg[-1])[-1]
assert_equal(msgSequence, 0) # must be sequence 0 on hashtx
self.log.info("Wait for block")
msg = self.zmqSubSocket.recv_multipart()
topic = msg[0]
body = msg[1]
msgSequence = struct.unpack('<I', msg[-1])[-1]
assert_equal(msgSequence, 0) # must be sequence 0 on hashblock
blkhash = bytes_to_hex_str(body)
assert_equal(genhashes[0], blkhash) # blockhash from generate must be equal to the hash received over zmq
self.log.info("Generate 10 blocks (and 10 coinbase txes)")
n = 10
genhashes = self.nodes[1].generate(n)
self.sync_all()
zmqHashes = []
blockcount = 0
for x in range(n * 2):
msg = self.zmqSubSocket.recv_multipart()
topic = msg[0]
body = msg[1]
if topic == b"hashblock":
zmqHashes.append(bytes_to_hex_str(body))
msgSequence = struct.unpack('<I', msg[-1])[-1]
assert_equal(msgSequence, blockcount + 1)
blockcount += 1
for x in range(n):
assert_equal(genhashes[x], zmqHashes[x]) # blockhash from generate must be equal to the hash received over zmq
self.log.info("Wait for tx from second node")
# test tx from a second node
hashRPC = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 1.0)
self.sync_all()
# now we should receive a zmq msg because the tx was broadcast
msg = self.zmqSubSocket.recv_multipart()
topic = msg[0]
body = msg[1]
assert_equal(topic, b"hashtx")
hashZMQ = bytes_to_hex_str(body)
msgSequence = struct.unpack('<I', msg[-1])[-1]
assert_equal(msgSequence, blockcount + 1)
assert_equal(hashRPC, hashZMQ) # txid from sendtoaddress must be equal to the hash received over zmq
if __name__ == '__main__':
ZMQTest().main()
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