1 files changed, 112 insertions, 0 deletions
diff --git a/test/functional/p2p-feefilter.py b/test/functional/p2p-feefilter.py
new file mode 100755
index 0000000000..d8f07700d0
--- /dev/null
+++ b/test/functional/p2p-feefilter.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+# Copyright (c) 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 processing of feefilter messages."""
+
+from test_framework.mininode import *
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import *
+import time
+
+
+def hashToHex(hash):
+    return format(hash, '064x')
+
+# Wait up to 60 secs to see if the testnode has received all the expected invs
+def allInvsMatch(invsExpected, testnode):
+    for x in range(60):
+        with mininode_lock:
+            if (sorted(invsExpected) == sorted(testnode.txinvs)):
+                return True
+        time.sleep(1)
+    return False
+
+# TestNode: bare-bones "peer".  Used to track which invs are received from a node
+# and to send the node feefilter messages.
+class TestNode(SingleNodeConnCB):
+    def __init__(self):
+        SingleNodeConnCB.__init__(self)
+        self.txinvs = []
+
+    def on_inv(self, conn, message):
+        for i in message.inv:
+            if (i.type == 1):
+                self.txinvs.append(hashToHex(i.hash))
+
+    def clear_invs(self):
+        with mininode_lock:
+            self.txinvs = []
+
+    def send_filter(self, feerate):
+        self.send_message(msg_feefilter(feerate))
+        self.sync_with_ping()
+
+class FeeFilterTest(BitcoinTestFramework):
+
+    def __init__(self):
+        super().__init__()
+        self.num_nodes = 2
+        self.setup_clean_chain = False
+
+    def setup_network(self):
+        # Node1 will be used to generate txs which should be relayed from Node0
+        # to our test node
+        self.nodes = []
+        self.nodes.append(start_node(0, self.options.tmpdir))
+        self.nodes.append(start_node(1, self.options.tmpdir))
+        connect_nodes(self.nodes[0], 1)
+
+    def run_test(self):
+        node1 = self.nodes[1]
+        node0 = self.nodes[0]
+        # Get out of IBD
+        node1.generate(1)
+        sync_blocks(self.nodes)
+
+        # Setup the p2p connections and start up the network thread.
+        test_node = TestNode()
+        connection = NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], test_node)
+        test_node.add_connection(connection)
+        NetworkThread().start()
+        test_node.wait_for_verack()
+
+        # Test that invs are received for all txs at feerate of 20 sat/byte
+        node1.settxfee(Decimal("0.00020000"))
+        txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
+        assert(allInvsMatch(txids, test_node))
+        test_node.clear_invs()
+
+        # Set a filter of 15 sat/byte
+        test_node.send_filter(15000)
+
+        # Test that txs are still being received (paying 20 sat/byte)
+        txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
+        assert(allInvsMatch(txids, test_node))
+        test_node.clear_invs()
+
+        # Change tx fee rate to 10 sat/byte and test they are no longer received
+        node1.settxfee(Decimal("0.00010000"))
+        [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
+        sync_mempools(self.nodes) # must be sure node 0 has received all txs 
+
+        # Send one transaction from node0 that should be received, so that we
+        # we can sync the test on receipt (if node1's txs were relayed, they'd
+        # be received by the time this node0 tx is received). This is
+        # unfortunately reliant on the current relay behavior where we batch up
+        # to 35 entries in an inv, which means that when this next transaction
+        # is eligible for relay, the prior transactions from node1 are eligible
+        # as well.
+        node0.settxfee(Decimal("0.00020000"))
+        txids = [node0.sendtoaddress(node0.getnewaddress(), 1)]
+        assert(allInvsMatch(txids, test_node))
+        test_node.clear_invs()
+
+        # Remove fee filter and check that txs are received again
+        test_node.send_filter(0)
+        txids = [node1.sendtoaddress(node1.getnewaddress(), 1) for x in range(3)]
+        assert(allInvsMatch(txids, test_node))
+        test_node.clear_invs()
+
+if __name__ == '__main__':
+    FeeFilterTest().main()