1  #!/usr/bin/env python3
 2  # Copyright (c) 2023-present The Bitcoin Core developers
 3  # Distributed under the MIT software license, see the accompanying
 4  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 5  
 6  import threading
 7  from test_framework.test_framework import BitcoinTestFramework
 8  from random import randbytes
 9  
10  
11  class NetDeadlockTest(BitcoinTestFramework):
12      def set_test_params(self):
13          self.setup_clean_chain = True
14          self.num_nodes = 2
15  
16      def run_test(self):
17          node0 = self.nodes[0]
18          node1 = self.nodes[1]
19  
20          self.log.info("Simultaneously send a large message on both sides")
21          rand_msg = randbytes(4000000).hex()
22  
23          thread0 = threading.Thread(target=node0.sendmsgtopeer, args=(0, "unknown", rand_msg))
24          thread1 = threading.Thread(target=node1.sendmsgtopeer, args=(0, "unknown", rand_msg))
25  
26          thread0.start()
27          thread1.start()
28          thread0.join()
29          thread1.join()
30  
31          self.log.info("Check whether a deadlock happened")
32          self.generate(node0, 1)
33          self.sync_blocks()
34  
35  
36  if __name__ == '__main__':
37      NetDeadlockTest(__file__).main()