Merge bitcoin/bitcoin#24258: test: check localaddresses in getnetworkinfo for nodes with proxy

89bb25d test: check localaddresses in getnetworkinfo for nodes with proxy (brunoerg)

Pull request description:

  This PR adds test coverage for the field `localaddresses` for `getnetworkinfo`. In this case, it verifies if this field is empty for all nodes since they are using proxy.

  Reference:
  https://github.com/bitcoin/bitcoin/blob/515200298b555845696a07ae2bc0a84a5dd02ae4/src/init.cpp#L449

ACKs for top commit:
  jonatack:
    ACK 89bb25d

Tree-SHA512: 3c765c7060b6972c1ae5a1104734cd7669b650b5f6aa4f623f4299567732260da5083fef306a7c1e71c931f5d1396f24abad251d95c3d82b1f3ee0efee7fcd1f

Author: MarcoFalke

test/functional/feature_proxy.py

@@ -239,7 +239,15 @@ def networks_dict(d):
             return r
 
         self.log.info("Test RPC getnetworkinfo")
-        n0 = networks_dict(self.nodes[0].getnetworkinfo())
+        nodes_network_info = []
+
+        self.log.debug("Test that setting -proxy disables local address discovery, i.e. -discover=0")
+        for node in self.nodes:
+            network_info = node.getnetworkinfo()
+            assert_equal(network_info["localaddresses"], [])
+            nodes_network_info.append(network_info)
+
+        n0 = networks_dict(nodes_network_info[0])
         assert_equal(NETWORKS, n0.keys())
         for net in NETWORKS:
             if net == NET_I2P:
@@ -254,7 +262,7 @@ def networks_dict(d):
         assert_equal(n0['i2p']['reachable'], False)
         assert_equal(n0['cjdns']['reachable'], False)
 
-        n1 = networks_dict(self.nodes[1].getnetworkinfo())
+        n1 = networks_dict(nodes_network_info[1])
         assert_equal(NETWORKS, n1.keys())
         for net in ['ipv4', 'ipv6']:
             assert_equal(n1[net]['proxy'], f'{self.conf1.addr[0]}:{self.conf1.addr[1]}')
@@ -266,7 +274,7 @@ def networks_dict(d):
         assert_equal(n1['i2p']['proxy_randomize_credentials'], False)
         assert_equal(n1['i2p']['reachable'], True)
 
-        n2 = networks_dict(self.nodes[2].getnetworkinfo())
+        n2 = networks_dict(nodes_network_info[2])
         assert_equal(NETWORKS, n2.keys())
         proxy = f'{self.conf2.addr[0]}:{self.conf2.addr[1]}'
         for net in NETWORKS:
@@ -283,7 +291,7 @@ def networks_dict(d):
         assert_equal(n2['cjdns']['reachable'], False)
 
         if self.have_ipv6:
-            n3 = networks_dict(self.nodes[3].getnetworkinfo())
+            n3 = networks_dict(nodes_network_info[3])
             assert_equal(NETWORKS, n3.keys())
             proxy = f'[{self.conf3.addr[0]}]:{self.conf3.addr[1]}'
             for net in NETWORKS:
@@ -294,7 +302,7 @@ def networks_dict(d):
             assert_equal(n3['i2p']['reachable'], False)
             assert_equal(n3['cjdns']['reachable'], False)
 
-        n4 = networks_dict(self.nodes[4].getnetworkinfo())
+        n4 = networks_dict(nodes_network_info[4])
         assert_equal(NETWORKS, n4.keys())
         for net in NETWORKS:
             if net == NET_I2P: