From b536a6fc83ee20cfb80da8bcb5f21c664ec7b5fe Mon Sep 17 00:00:00 2001
From: Alex Morcos <morcos@chaincode.com>
Date: Fri, 4 Mar 2016 16:11:49 -0500
Subject: [PATCH] Add p2p test for feefilter

---
 qa/pull-tester/rpc-tests.py             |  3 +-
 qa/rpc-tests/p2p-feefilter.py           | 99 +++++++++++++++++++++++++
 qa/rpc-tests/test_framework/mininode.py | 21 +++++-
 3 files changed, 121 insertions(+), 2 deletions(-)
 create mode 100755 qa/rpc-tests/p2p-feefilter.py

diff --git a/qa/pull-tester/rpc-tests.py b/qa/pull-tester/rpc-tests.py
index f15eaacbd..74be96da7 100755
--- a/qa/pull-tester/rpc-tests.py
+++ b/qa/pull-tester/rpc-tests.py
@@ -127,7 +127,6 @@ testScriptsExt = [
     'getblocktemplate_proposals.py',
     'txn_doublespend.py',
     'txn_clone.py --mineblock',
-    'pruning.py',
     'forknotify.py',
     'invalidateblock.py',
 #    'rpcbind_test.py', #temporary, bug in libevent, see #6655
@@ -137,6 +136,8 @@ testScriptsExt = [
     'mempool_packages.py',
     'maxuploadtarget.py',
     'replace-by-fee.py',
+    'p2p-feefilter.py',
+    'pruning.py', # leave pruning last as it takes a REALLY long time
 ]
 
 #Enable ZMQ tests
diff --git a/qa/rpc-tests/p2p-feefilter.py b/qa/rpc-tests/p2p-feefilter.py
new file mode 100755
index 000000000..f85c18dcd
--- /dev/null
+++ b/qa/rpc-tests/p2p-feefilter.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python2
+# Copyright (c) 2016 The Bitcoin Core developers
+# Distributed under the MIT/X11 software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+
+from test_framework.mininode import *
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import *
+import time
+
+'''
+FeeFilterTest -- test processing of feefilter messages
+'''
+
+def hashToHex(hash):
+    return format(hash, '064x').decode('utf-8')
+
+# Wait up to 60 secs to see if the testnode has received all the expected invs
+def allInvsMatch(invsExpected, testnode):
+    for x in xrange(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 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, ["-debug", "-logtimemicros"]))
+        self.nodes.append(start_node(1, self.options.tmpdir, ["-debug", "-logtimemicros"]))
+        connect_nodes(self.nodes[0], 1)
+
+    def run_test(self):
+        node1 = self.nodes[1]
+        # 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 xrange(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 xrange(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 xrange(3)]
+        sync_mempools(self.nodes) # must be sure node 0 has received all txs 
+        time.sleep(10) # wait 10 secs to be sure its doesn't relay any
+        assert(allInvsMatch([], 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 xrange(3)]
+        assert(allInvsMatch(txids, test_node))
+        test_node.clear_invs()
+
+if __name__ == '__main__':
+    FeeFilterTest().main()
diff --git a/qa/rpc-tests/test_framework/mininode.py b/qa/rpc-tests/test_framework/mininode.py
index 5b6bb190e..20386c642 100755
--- a/qa/rpc-tests/test_framework/mininode.py
+++ b/qa/rpc-tests/test_framework/mininode.py
@@ -1023,6 +1023,23 @@ def wait_until(predicate, attempts=float('inf'), timeout=float('inf')):
 
     return False
 
+class msg_feefilter(object):
+    command = "feefilter"
+
+    def __init__(self, feerate=0L):
+        self.feerate = feerate
+
+    def deserialize(self, f):
+        self.feerate = struct.unpack("<Q", f.read(8))[0]
+
+    def serialize(self):
+        r = ""
+        r += struct.pack("<Q", self.feerate)
+        return r
+
+    def __repr__(self):
+        return "msg_feefilter(feerate=%08x)" % self.feerate
+
 # This is what a callback should look like for NodeConn
 # Reimplement the on_* functions to provide handling for events
 class NodeConnCB(object):
@@ -1098,6 +1115,7 @@ class NodeConnCB(object):
     def on_close(self, conn): pass
     def on_mempool(self, conn): pass
     def on_pong(self, conn, message): pass
+    def on_feefilter(self, conn, message): pass
 
 # More useful callbacks and functions for NodeConnCB's which have a single NodeConn
 class SingleNodeConnCB(NodeConnCB):
@@ -1145,7 +1163,8 @@ class NodeConn(asyncore.dispatcher):
         "headers": msg_headers,
         "getheaders": msg_getheaders,
         "reject": msg_reject,
-        "mempool": msg_mempool
+        "mempool": msg_mempool,
+        "feefilter": msg_feefilter
     }
     MAGIC_BYTES = {
         "mainnet": "\xf9\xbe\xb4\xd9",   # mainnet