Merge #17984: test: Add p2p test for forcerelay permission

aaaae4d0ebd5ef34d81997a73ab9839ba7b4b9e4 test: Add p2p test for forcerelay permission (MarcoFalke)
fa6b57bcaaf4dc65d78316353033b03d171a3beb test: Fix whitespace in p2p_permissions.py (MarcoFalke)
faf40810d7b7f42f3588bfa8a663095aa24001b1 test: Make msg_tx a witness tx (MarcoFalke)

Pull request description:

  The commit `test: Make msg_tx a witness tx` is needed so that the python mininode does not strip the witness from transactions before sending them over p2p. The commit should also be done to keep symmetry with msg_block. See:

  *  tests: Make msg_block a witness block #15982

ACKs for top commit:
  laanwj:
    ACK aaaae4d0ebd5ef34d81997a73ab9839ba7b4b9e4

Tree-SHA512: b4b546c88f7f0576cb512f0872bc6bef9d4df65783803f226986e56175937f418aa1ed906417ac909f27f1fd521d64629621fda83250fa925c46ef9513db0e4c

test/functional/p2p_permissions.py

@@ -7,20 +7,33 @@
 Test that permissions are correctly calculated and applied
 """
 
+from test_framework.address import ADDRESS_BCRT1_P2SH_OP_TRUE
+from test_framework.messages import (
+    CTransaction,
+    FromHex,
+)
+from test_framework.mininode import P2PDataStore
+from test_framework.script import (
+    CScript,
+    OP_TRUE,
+)
 from test_framework.test_node import ErrorMatch
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
     p2p_port,
+    wait_until,
 )
 
+
 class P2PPermissionsTests(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 2
         self.setup_clean_chain = True
-        self.extra_args = [[],[]]
 
     def run_test(self):
+        self.check_tx_relay()
+
         self.checkpermission(
             # default permissions (no specific permissions)
             ["-whitelist=127.0.0.1"],
@@ -88,6 +101,45 @@ class P2PPermissionsTests(BitcoinTestFramework):
         self.nodes[1].assert_start_raises_init_error(["-whitelist=noban@127.0.0.1:230"], "Invalid netmask specified in", match=ErrorMatch.PARTIAL_REGEX)
         self.nodes[1].assert_start_raises_init_error(["-whitebind=noban@127.0.0.1/10"], "Cannot resolve -whitebind address", match=ErrorMatch.PARTIAL_REGEX)
 
+    def check_tx_relay(self):
+        block_op_true = self.nodes[0].getblock(self.nodes[0].generatetoaddress(100, ADDRESS_BCRT1_P2SH_OP_TRUE)[0])
+        self.sync_all()
+
+        self.log.debug("Create a connection from a whitelisted wallet that rebroadcasts raw txs")
+        # A python mininode is needed to send the raw transaction directly. If a full node was used, it could only
+        # rebroadcast via the inv-getdata mechanism. However, even for whitelisted connections, a full node would
+        # currently not request a txid that is already in the mempool.
+        self.restart_node(1, extra_args=["-whitelist=forcerelay@127.0.0.1"])
+        p2p_rebroadcast_wallet = self.nodes[1].add_p2p_connection(P2PDataStore())
+
+        self.log.debug("Send a tx from the wallet initially")
+        tx = FromHex(
+            CTransaction(),
+            self.nodes[0].createrawtransaction(
+                inputs=[{
+                    'txid': block_op_true['tx'][0],
+                    'vout': 0,
+                }], outputs=[{
+                    ADDRESS_BCRT1_P2SH_OP_TRUE: 5,
+                }]),
+        )
+        tx.vin[0].scriptSig = CScript([CScript([OP_TRUE])])
+        txid = tx.rehash()
+
+        self.log.debug("Wait until tx is in node[1]'s mempool")
+        p2p_rebroadcast_wallet.send_txs_and_test([tx], self.nodes[1])
+
+        self.log.debug("Check that node[1] will send the tx to node[0] even though it is already in the mempool")
+        self.connect_nodes(1, 0)
+
+        def in_mempool():
+            self.bump_mocktime(1)
+            return txid in self.nodes[0].getrawmempool()
+
+        with self.nodes[1].assert_debug_log(["Force relaying tx {} from whitelisted peer=0".format(txid)]):
+            p2p_rebroadcast_wallet.send_txs_and_test([tx], self.nodes[1])
+            wait_until(in_mempool)
+
     def checkpermission(self, args, expectedPermissions, whitelisted):
         self.restart_node(1, args)
         self.connect_nodes(0, 1)
@@ -104,5 +156,6 @@ class P2PPermissionsTests(BitcoinTestFramework):
         with open(self.nodes[nodeid].bitcoinconf, 'w', encoding="utf8") as f:
             f.write(newText)
 
+
 if __name__ == '__main__':
     P2PPermissionsTests().main()

test/functional/test_framework/address.py

@@ -15,6 +15,7 @@ from .util import hex_str_to_bytes
 # Note unlike in bitcoin, this address isn't bech32 since we don't (at this time) support bech32.
 ADDRESS_BCRT1_UNSPENDABLE = 'yVg3NBUHNEhgDceqwVUjsZHreC5PBHnUo9'
 ADDRESS_BCRT1_UNSPENDABLE_DESCRIPTOR = 'addr(yVg3NBUHNEhgDceqwVUjsZHreC5PBHnUo9)#e5kt0jtk'
+ADDRESS_BCRT1_P2SH_OP_TRUE = '8zJctvfrzGZ5s1zQ3kagwyW1DsPYSQ4V2P'
 
 chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'