Merge #10143: [net] Allow disconnectnode RPC to be called with node id

d54297f [tests] disconnect_ban: add tests for disconnect-by-nodeid (John Newbery)
5cc3ee2 [tests] disconnect_ban: remove dependency on urllib (John Newbery)
12de2f2 [tests] disconnect_ban: use wait_until instead of sleep (John Newbery)
2077fda [tests] disconnect_ban: add logging (John Newbery)
395561b [tests] disconnectban test - only use two nodes (John Newbery)
e367ad5 [tests] rename nodehandling to disconnectban (John Newbery)
d6564a2 [tests] fix nodehandling.py flake8 warnings (John Newbery)
23e6e64 Allow disconnectnode() to be called with node id (John Newbery)

Tree-SHA512: a371bb05a24a91cdb16a7ac4fbb091d5d3bf6554b29bd69d74522cb7523d3f1c5b1989d5e7b03f3fc7369fb727098dd2a549de551b731dd480c121d9517d3576

5 files changed, 138 insertions, 88 deletions

diff --git a/src/rpc/client.cpp b/src/rpc/client.cpp
index 1f3c4e52ad..941bdd9379 100644
--- a/src/rpc/client.cpp
+++ b/src/rpc/client.cpp
@@ -115,6 +115,7 @@ static const CRPCConvertParam vRPCConvertParams[] =
     { "bumpfee", 1, "options" },
     { "logging", 0, "include" },
     { "logging", 1, "exclude" },
+    { "disconnectnode", 1, "nodeid" },
     // Echo with conversion (For testing only)
     { "echojson", 0, "arg0" },
     { "echojson", 1, "arg1" },
diff --git a/src/rpc/net.cpp b/src/rpc/net.cpp
index e4a909c1f6..cde5ae723b 100644
--- a/src/rpc/net.cpp
+++ b/src/rpc/net.cpp
@@ -234,23 +234,43 @@ UniValue addnode(const JSONRPCRequest& request)
 
 UniValue disconnectnode(const JSONRPCRequest& request)
 {
-    if (request.fHelp || request.params.size() != 1)
+    if (request.fHelp || request.params.size() == 0 || request.params.size() >= 3)
         throw std::runtime_error(
-            "disconnectnode \"address\" \n"
-            "\nImmediately disconnects from the specified node.\n"
+            "disconnectnode \"[address]\" [nodeid]\n"
+            "\nImmediately disconnects from the specified peer node.\n"
+            "\nStrictly one out of 'address' and 'nodeid' can be provided to identify the node.\n"
+            "\nTo disconnect by nodeid, either set 'address' to the empty string, or call using the named 'nodeid' argument only.\n"
             "\nArguments:\n"
-            "1. \"address\"     (string, required) The IP address/port of the node\n"
+            "1. \"address\"     (string, optional) The IP address/port of the node\n"
+            "2. \"nodeid\"      (number, optional) The node ID (see getpeerinfo for node IDs)\n"
             "\nExamples:\n"
             + HelpExampleCli("disconnectnode", "\"192.168.0.6:8333\"")
+            + HelpExampleCli("disconnectnode", "\"\" 1")
             + HelpExampleRpc("disconnectnode", "\"192.168.0.6:8333\"")
+            + HelpExampleRpc("disconnectnode", "\"\", 1")
         );
 
     if(!g_connman)
         throw JSONRPCError(RPC_CLIENT_P2P_DISABLED, "Error: Peer-to-peer functionality missing or disabled");
 
-    bool ret = g_connman->DisconnectNode(request.params[0].get_str());
-    if (!ret)
+    bool success;
+    const UniValue &address_arg = request.params[0];
+    const UniValue &id_arg = request.params.size() < 2 ? NullUniValue : request.params[1];
+
+    if (!address_arg.isNull() && id_arg.isNull()) {
+        /* handle disconnect-by-address */
+        success = g_connman->DisconnectNode(address_arg.get_str());
+    } else if (!id_arg.isNull() && (address_arg.isNull() || (address_arg.isStr() && address_arg.get_str().empty()))) {
+        /* handle disconnect-by-id */
+        NodeId nodeid = (NodeId) id_arg.get_int64();
+        success = g_connman->DisconnectNode(nodeid);
+    } else {
+        throw JSONRPCError(RPC_INVALID_PARAMS, "Only one of address and nodeid should be provided.");
+    }
+
+    if (!success) {
         throw JSONRPCError(RPC_CLIENT_NODE_NOT_CONNECTED, "Node not found in connected nodes");
+    }
 
     return NullUniValue;
 }
@@ -607,7 +627,7 @@ static const CRPCCommand commands[] =
     { "network",            "ping",                   &ping,                   true,  {} },
     { "network",            "getpeerinfo",            &getpeerinfo,            true,  {} },
     { "network",            "addnode",                &addnode,                true,  {"node","command"} },
-    { "network",            "disconnectnode",         &disconnectnode,         true,  {"address"} },
+    { "network",            "disconnectnode",         &disconnectnode,         true,  {"address", "nodeid"} },
     { "network",            "getaddednodeinfo",       &getaddednodeinfo,       true,  {"node"} },
     { "network",            "getnettotals",           &getnettotals,           true,  {} },
     { "network",            "getnetworkinfo",         &getnetworkinfo,         true,  {} },
diff --git a/test/functional/disconnect_ban.py b/test/functional/disconnect_ban.py
new file mode 100755
index 0000000000..3f451d49d2
--- /dev/null
+++ b/test/functional/disconnect_ban.py
@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+# Copyright (c) 2014-2016 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 node disconnect and ban behavior"""
+
+from test_framework.mininode import wait_until
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import (assert_equal,
+                                 assert_raises_jsonrpc,
+                                 connect_nodes_bi,
+                                 start_node,
+                                 stop_node,
+                                 )
+
+class DisconnectBanTest(BitcoinTestFramework):
+
+    def __init__(self):
+        super().__init__()
+        self.num_nodes = 2
+        self.setup_clean_chain = False
+
+    def setup_network(self):
+        self.nodes = self.setup_nodes()
+        connect_nodes_bi(self.nodes, 0, 1)
+
+    def run_test(self):
+        self.log.info("Test setban and listbanned RPCs")
+
+        self.log.info("setban: successfully ban single IP address")
+        assert_equal(len(self.nodes[1].getpeerinfo()), 2)  # node1 should have 2 connections to node0 at this point
+        self.nodes[1].setban("127.0.0.1", "add")
+        wait_until(lambda: len(self.nodes[1].getpeerinfo()) == 0)
+        assert_equal(len(self.nodes[1].getpeerinfo()), 0)  # all nodes must be disconnected at this point
+        assert_equal(len(self.nodes[1].listbanned()), 1)
+
+        self.log.info("clearbanned: successfully clear ban list")
+        self.nodes[1].clearbanned()
+        assert_equal(len(self.nodes[1].listbanned()), 0)
+        self.nodes[1].setban("127.0.0.0/24", "add")
+
+        self.log.info("setban: fail to ban an already banned subnet")
+        assert_equal(len(self.nodes[1].listbanned()), 1)
+        assert_raises_jsonrpc(-23, "IP/Subnet already banned", self.nodes[1].setban, "127.0.0.1", "add")
+
+        self.log.info("setban: fail to ban an invalid subnet")
+        assert_raises_jsonrpc(-30, "Error: Invalid IP/Subnet", self.nodes[1].setban, "127.0.0.1/42", "add")
+        assert_equal(len(self.nodes[1].listbanned()), 1)  # still only one banned ip because 127.0.0.1 is within the range of 127.0.0.0/24
+
+        self.log.info("setban remove: fail to unban a non-banned subnet")
+        assert_raises_jsonrpc(-30, "Error: Unban failed", self.nodes[1].setban, "127.0.0.1", "remove")
+        assert_equal(len(self.nodes[1].listbanned()), 1)
+
+        self.log.info("setban remove: successfully unban subnet")
+        self.nodes[1].setban("127.0.0.0/24", "remove")
+        assert_equal(len(self.nodes[1].listbanned()), 0)
+        self.nodes[1].clearbanned()
+        assert_equal(len(self.nodes[1].listbanned()), 0)
+
+        self.log.info("setban: test persistence across node restart")
+        self.nodes[1].setban("127.0.0.0/32", "add")
+        self.nodes[1].setban("127.0.0.0/24", "add")
+        self.nodes[1].setban("192.168.0.1", "add", 1)  # ban for 1 seconds
+        self.nodes[1].setban("2001:4d48:ac57:400:cacf:e9ff:fe1d:9c63/19", "add", 1000)  # ban for 1000 seconds
+        listBeforeShutdown = self.nodes[1].listbanned()
+        assert_equal("192.168.0.1/32", listBeforeShutdown[2]['address'])
+        wait_until(lambda: len(self.nodes[1].listbanned()) == 3)
+
+        stop_node(self.nodes[1], 1)
+
+        self.nodes[1] = start_node(1, self.options.tmpdir)
+        listAfterShutdown = self.nodes[1].listbanned()
+        assert_equal("127.0.0.0/24", listAfterShutdown[0]['address'])
+        assert_equal("127.0.0.0/32", listAfterShutdown[1]['address'])
+        assert_equal("/19" in listAfterShutdown[2]['address'], True)
+
+        # Clear ban lists
+        self.nodes[1].clearbanned()
+        connect_nodes_bi(self.nodes, 0, 1)
+
+        self.log.info("Test disconnectrnode RPCs")
+
+        self.log.info("disconnectnode: fail to disconnect when calling with address and nodeid")
+        address1 = self.nodes[0].getpeerinfo()[0]['addr']
+        node1 = self.nodes[0].getpeerinfo()[0]['addr']
+        assert_raises_jsonrpc(-32602, "Only one of address and nodeid should be provided.", self.nodes[0].disconnectnode, address=address1, nodeid=node1)
+
+        self.log.info("disconnectnode: fail to disconnect when calling with junk address")
+        assert_raises_jsonrpc(-29, "Node not found in connected nodes", self.nodes[0].disconnectnode, address="221B Baker Street")
+
+        self.log.info("disconnectnode: successfully disconnect node by address")
+        address1 = self.nodes[0].getpeerinfo()[0]['addr']
+        self.nodes[0].disconnectnode(address=address1)
+        wait_until(lambda: len(self.nodes[0].getpeerinfo()) == 1)
+        assert not [node for node in self.nodes[0].getpeerinfo() if node['addr'] == address1]
+
+        self.log.info("disconnectnode: successfully reconnect node")
+        connect_nodes_bi(self.nodes, 0, 1)  # reconnect the node
+        assert_equal(len(self.nodes[0].getpeerinfo()), 2)
+        assert [node for node in self.nodes[0].getpeerinfo() if node['addr'] == address1]
+
+        self.log.info("disconnectnode: successfully disconnect node by node id")
+        id1 = self.nodes[0].getpeerinfo()[0]['id']
+        self.nodes[0].disconnectnode(nodeid=id1)
+        wait_until(lambda: len(self.nodes[0].getpeerinfo()) == 1)
+        assert not [node for node in self.nodes[0].getpeerinfo() if node['id'] == id1]
+
+if __name__ == '__main__':
+    DisconnectBanTest().main()
diff --git a/test/functional/nodehandling.py b/test/functional/nodehandling.py
deleted file mode 100755
index a6b10a0d83..0000000000
--- a/test/functional/nodehandling.py
+++ /dev/null
@@ -1,80 +0,0 @@
-#!/usr/bin/env python3
-# Copyright (c) 2014-2016 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 node handling."""
-
-from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import *
-
-import urllib.parse
-
-class NodeHandlingTest (BitcoinTestFramework):
-
-    def __init__(self):
-        super().__init__()
-        self.num_nodes = 4
-        self.setup_clean_chain = False
-
-    def run_test(self):
-        ###########################
-        # setban/listbanned tests #
-        ###########################
-        assert_equal(len(self.nodes[2].getpeerinfo()), 4) #we should have 4 nodes at this point
-        self.nodes[2].setban("127.0.0.1", "add")
-        time.sleep(3) #wait till the nodes are disconected
-        assert_equal(len(self.nodes[2].getpeerinfo()), 0) #all nodes must be disconnected at this point
-        assert_equal(len(self.nodes[2].listbanned()), 1)
-        self.nodes[2].clearbanned()
-        assert_equal(len(self.nodes[2].listbanned()), 0)
-        self.nodes[2].setban("127.0.0.0/24", "add")
-        assert_equal(len(self.nodes[2].listbanned()), 1)
-        # This will throw an exception because 127.0.0.1 is within range 127.0.0.0/24
-        assert_raises_jsonrpc(-23, "IP/Subnet already banned", self.nodes[2].setban, "127.0.0.1", "add")
-        # This will throw an exception because 127.0.0.1/42 is not a real subnet
-        assert_raises_jsonrpc(-30, "Error: Invalid IP/Subnet", self.nodes[2].setban, "127.0.0.1/42", "add")
-        assert_equal(len(self.nodes[2].listbanned()), 1) #still only one banned ip because 127.0.0.1 is within the range of 127.0.0.0/24
-        # This will throw an exception because 127.0.0.1 was not added above
-        assert_raises_jsonrpc(-30, "Error: Unban failed", self.nodes[2].setban, "127.0.0.1", "remove")
-        assert_equal(len(self.nodes[2].listbanned()), 1)
-        self.nodes[2].setban("127.0.0.0/24", "remove")
-        assert_equal(len(self.nodes[2].listbanned()), 0)
-        self.nodes[2].clearbanned()
-        assert_equal(len(self.nodes[2].listbanned()), 0)
-
-        ##test persisted banlist
-        self.nodes[2].setban("127.0.0.0/32", "add")
-        self.nodes[2].setban("127.0.0.0/24", "add")
-        self.nodes[2].setban("192.168.0.1", "add", 1) #ban for 1 seconds
-        self.nodes[2].setban("2001:4d48:ac57:400:cacf:e9ff:fe1d:9c63/19", "add", 1000) #ban for 1000 seconds
-        listBeforeShutdown = self.nodes[2].listbanned()
-        assert_equal("192.168.0.1/32", listBeforeShutdown[2]['address']) #must be here
-        time.sleep(2) #make 100% sure we expired 192.168.0.1 node time
-
-        #stop node
-        stop_node(self.nodes[2], 2)
-
-        self.nodes[2] = start_node(2, self.options.tmpdir)
-        listAfterShutdown = self.nodes[2].listbanned()
-        assert_equal("127.0.0.0/24", listAfterShutdown[0]['address'])
-        assert_equal("127.0.0.0/32", listAfterShutdown[1]['address'])
-        assert_equal("/19" in listAfterShutdown[2]['address'], True)
-
-        ###########################
-        # RPC disconnectnode test #
-        ###########################
-        url = urllib.parse.urlparse(self.nodes[1].url)
-        self.nodes[0].disconnectnode(url.hostname+":"+str(p2p_port(1)))
-        time.sleep(2) #disconnecting a node needs a little bit of time
-        for node in self.nodes[0].getpeerinfo():
-            assert(node['addr'] != url.hostname+":"+str(p2p_port(1)))
-
-        connect_nodes_bi(self.nodes,0,1) #reconnect the node
-        found = False
-        for node in self.nodes[0].getpeerinfo():
-            if node['addr'] == url.hostname+":"+str(p2p_port(1)):
-                found = True
-        assert(found)
-
-if __name__ == '__main__':
-    NodeHandlingTest ().main ()
diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py
index 3a3fa31ec3..f7a501ab76 100755
--- a/test/functional/test_runner.py
+++ b/test/functional/test_runner.py
@@ -88,7 +88,7 @@ BASE_SCRIPTS= [
     'multi_rpc.py',
     'proxy_test.py',
     'signrawtransactions.py',
-    'nodehandling.py',
+    'disconnect_ban.py',
     'decodescript.py',
     'blockchain.py',
     'disablewallet.py',