Merge bitcoin#25314: p2p: always set nTime for self-advertisements

99b9e5f p2p: always set nTime for self-advertisements (Martin Zumsande)

Pull request description:

  This logic was recently changed in bitcoin@0cfc0cd to overwrite `addrLocal` with the address they gave us when self-advertising to an inbound peer. But if we don't also change `nTime` again from the default `TIME_INIT`, our peer will not relay our advertised address any further.

ACKs for top commit:
  naumenkogs:
    ACK 99b9e5f
  laanwj:
    Code review ACK 99b9e5f
  vasild:
    ACK 99b9e5f

Tree-SHA512: 4c7ea51cc77ddaa4b3537962ad2ad085f7ef5322982d3b1f5baecb852719eb99dd578436ca63432cb6b0a4fbd8b59fca793caf326c4663a4d6f34301e8146aa2

Author: laanwj

src/net.cpp

@@ -273,7 +273,7 @@ std::optional<CAddress> GetLocalAddrForPeer(CNode *pnode)
         if (pnode->IsInboundConn()) {
             // For inbound connections, assume both the address and the port
             // as seen from the peer.
-            addrLocal = CAddress{pnode->GetAddrLocal(), addrLocal.nServices};
+            addrLocal = CAddress{pnode->GetAddrLocal(), addrLocal.nServices, addrLocal.nTime};
         } else {
             // For outbound connections, assume just the address as seen from
             // the peer and leave the port in `addrLocal` as returned by

src/test/net_tests.cpp

@@ -676,10 +676,13 @@ BOOST_AUTO_TEST_CASE(get_local_addr_for_peer_port)
     const uint16_t bind_port = 20001;
     m_node.args->ForceSetArg("-bind", strprintf("3.4.5.6:%u", bind_port));
 
+    const uint32_t current_time = static_cast<uint32_t>(GetAdjustedTime());
+    SetMockTime(current_time);
+
     // Our address:port as seen from the peer, completely different from the above.
     in_addr peer_us_addr;
     peer_us_addr.s_addr = htonl(0x02030405);
-    const CAddress peer_us{CService{peer_us_addr, 20002}, NODE_NETWORK};
+    const CAddress peer_us{CService{peer_us_addr, 20002}, NODE_NETWORK, current_time};
 
     // Create a peer with a routable IPv4 address (outbound).
     in_addr peer_out_in_addr;
@@ -700,7 +703,7 @@ BOOST_AUTO_TEST_CASE(get_local_addr_for_peer_port)
     // Without the fix peer_us:8333 is chosen instead of the proper peer_us:bind_port.
     auto chosen_local_addr = GetLocalAddrForPeer(&peer_out);
     BOOST_REQUIRE(chosen_local_addr);
-    const CService expected{peer_us_addr, bind_port};
+    const CAddress expected{CService{peer_us_addr, bind_port}, NODE_NETWORK, current_time};
     BOOST_CHECK(*chosen_local_addr == expected);
 
     // Create a peer with a routable IPv4 address (inbound).