daemon: add --public-node mode, RPC port propagation over P2P

src/cryptonote_basic/connection_context.h

@@ -40,7 +40,8 @@ namespace cryptonote
   struct cryptonote_connection_context: public epee::net_utils::connection_context_base
   {
     cryptonote_connection_context(): m_state(state_before_handshake), m_remote_blockchain_height(0), m_last_response_height(0),
-        m_last_request_time(boost::date_time::not_a_date_time), m_callback_request_count(0), m_last_known_hash(crypto::null_hash), m_pruning_seed(0), m_anchor(false) {}
+        m_last_request_time(boost::date_time::not_a_date_time), m_callback_request_count(0),
+        m_last_known_hash(crypto::null_hash), m_pruning_seed(0), m_rpc_port(0), m_anchor(false) {}
 
     enum state
     {
@@ -60,6 +61,7 @@ namespace cryptonote
     epee::copyable_atomic m_callback_request_count; //in debug purpose: problem with double callback rise
     crypto::hash m_last_known_hash;
     uint32_t m_pruning_seed;
+    uint16_t m_rpc_port;
     bool m_anchor;
     //size_t m_score;  TODO: add score calculations
   };

src/cryptonote_protocol/cryptonote_protocol_defs.h

@@ -53,6 +53,7 @@ namespace cryptonote
     std::string host;
     std::string ip;
     std::string port;
+    uint16_t rpc_port;
 
     std::string peer_id;
 
@@ -88,6 +89,7 @@ namespace cryptonote
       KV_SERIALIZE(host)
       KV_SERIALIZE(ip)
       KV_SERIALIZE(port)
+      KV_SERIALIZE(rpc_port)
       KV_SERIALIZE(peer_id)
       KV_SERIALIZE(recv_count)
       KV_SERIALIZE(recv_idle_time)

src/cryptonote_protocol/cryptonote_protocol_handler.inl

@@ -231,6 +231,7 @@ namespace cryptonote
         cnx.ip = cnx.host;
         cnx.port = std::to_string(cntxt.m_remote_address.as<epee::net_utils::ipv4_network_address>().port());
       }
+      cnx.rpc_port = cntxt.m_rpc_port;
 
       std::stringstream peer_id_str;
       peer_id_str << std::hex << std::setw(16) << peer_id;

src/daemon/command_line_args.h

@@ -96,6 +96,12 @@ namespace daemon_args
   , 0
   };
 
+  const command_line::arg_descriptor<bool> arg_public_node = {
+    "public-node"
+  , "Allow other users to use the node as a remote (restricted RPC mode, view-only commands) and advertise it over P2P"
+  , false
+  };
+
   const command_line::arg_descriptor<std::string> arg_zmq_rpc_bind_ip   = {
     "zmq-rpc-bind-ip"
       , "IP for ZMQ RPC server to listen on"

src/daemon/daemon.cpp

@@ -96,9 +96,11 @@ void t_daemon::init_options(boost::program_options::options_description & option
 }
 
 t_daemon::t_daemon(
-    boost::program_options::variables_map const & vm
+    boost::program_options::variables_map const & vm,
+    uint16_t public_rpc_port
   )
-  : mp_internals{new t_internals{vm}}
+  : mp_internals{new t_internals{vm}},
+  public_rpc_port(public_rpc_port)
 {
   zmq_rpc_bind_port = command_line::get_arg(vm, daemon_args::arg_zmq_rpc_bind_port);
   zmq_rpc_bind_address = command_line::get_arg(vm, daemon_args::arg_zmq_rpc_bind_ip);
@@ -186,6 +188,12 @@ bool t_daemon::run(bool interactive)
     MINFO(std::string("ZMQ server started at ") + zmq_rpc_bind_address
           + ":" + zmq_rpc_bind_port + ".");
 
+    if (public_rpc_port > 0)
+    {
+      MGINFO("Public RPC port " << public_rpc_port << " will be advertised to other peers over P2P");
+      mp_internals->p2p.get().set_rpc_port(public_rpc_port);
+    }
+    
     mp_internals->p2p.run(); // blocks until p2p goes down
 
     if (rpc_commands)

src/daemon/daemon.h

@@ -43,11 +43,13 @@ private:
   void stop_p2p();
 private:
   std::unique_ptr<t_internals> mp_internals;
+  uint16_t public_rpc_port;
   std::string zmq_rpc_bind_address;
   std::string zmq_rpc_bind_port;
 public:
   t_daemon(
-      boost::program_options::variables_map const & vm
+      boost::program_options::variables_map const & vm,
+      uint16_t public_rpc_port = 0
     );
   t_daemon(t_daemon && other);
   t_daemon & operator=(t_daemon && other);

src/daemon/executor.cpp

@@ -59,21 +59,21 @@ namespace daemonize
     )
   {
     LOG_PRINT_L0("Monero '" << MONERO_RELEASE_NAME << "' (v" << MONERO_VERSION_FULL << ") Daemonised");
-    return t_daemon{vm};
+    return t_daemon{vm, public_rpc_port};
   }
 
   bool t_executor::run_non_interactive(
       boost::program_options::variables_map const & vm
     )
   {
-    return t_daemon{vm}.run(false);
+    return t_daemon{vm, public_rpc_port}.run(false);
   }
 
   bool t_executor::run_interactive(
       boost::program_options::variables_map const & vm
     )
   {
-    return t_daemon{vm}.run(true);
+    return t_daemon{vm, public_rpc_port}.run(true);
   }
 }
 

src/daemon/executor.h

@@ -45,6 +45,10 @@ namespace daemonize
 
     static std::string const NAME;
 
+    t_executor(uint16_t public_rpc_port = 0) : public_rpc_port(public_rpc_port)
+    {
+    }
+
     static void init_options(
         boost::program_options::options_description & configurable_options
       );
@@ -62,5 +66,8 @@ namespace daemonize
     bool run_interactive(
         boost::program_options::variables_map const & vm
       );
+
+  private:
+    uint16_t public_rpc_port;
   };
 }

src/daemon/main.cpp

@@ -39,6 +39,7 @@
 #include "daemon/executor.h"
 #include "daemonizer/daemonizer.h"
 #include "misc_log_ex.h"
+#include "net/parse.h"
 #include "p2p/net_node.h"
 #include "rpc/core_rpc_server.h"
 #include "rpc/rpc_args.h"
@@ -56,6 +57,57 @@
 namespace po = boost::program_options;
 namespace bf = boost::filesystem;
 
+uint16_t parse_public_rpc_port(const po::variables_map &vm)
+{
+  const auto &public_node_arg = daemon_args::arg_public_node;
+  const bool public_node = command_line::get_arg(vm, public_node_arg);
+  if (!public_node)
+  {
+    return 0;
+  }
+
+  std::string rpc_port_str;
+  const auto &restricted_rpc_port = cryptonote::core_rpc_server::arg_rpc_restricted_bind_port;
+  if (!command_line::is_arg_defaulted(vm, restricted_rpc_port))
+  {
+    rpc_port_str = command_line::get_arg(vm, restricted_rpc_port);;
+  }
+  else if (command_line::get_arg(vm, cryptonote::core_rpc_server::arg_restricted_rpc))
+  {
+    rpc_port_str = command_line::get_arg(vm, cryptonote::core_rpc_server::arg_rpc_bind_port);
+  }
+  else
+  {
+    throw std::runtime_error("restricted RPC mode is required");
+  }
+
+  uint16_t rpc_port;
+  if (!string_tools::get_xtype_from_string(rpc_port, rpc_port_str))
+  {
+    throw std::runtime_error("invalid RPC port " + rpc_port_str);
+  }
+
+  const auto rpc_bind_address = command_line::get_arg(vm, cryptonote::rpc_args::descriptors().rpc_bind_ip);
+  const auto address = net::get_network_address(rpc_bind_address, rpc_port);
+  if (!address) {
+    throw std::runtime_error("failed to parse RPC bind address");
+  }
+  if (address->get_zone() != epee::net_utils::zone::public_)
+  {
+    throw std::runtime_error(std::string(zone_to_string(address->get_zone()))
+      + " network zone is not supported, please check RPC server bind address");
+  }
+
+  if (address->is_loopback() || address->is_local())
+  {
+    MLOG_RED(el::Level::Warning, "--" << public_node_arg.name 
+      << " is enabled, but RPC server " << address->str() 
+      << " may be unreachable from outside, please check RPC server bind address");
+  }
+
+  return rpc_port;
+}
+
 int main(int argc, char const * argv[])
 {
   try {
@@ -86,6 +138,7 @@ int main(int argc, char const * argv[])
       command_line::add_arg(core_settings, daemon_args::arg_max_log_file_size);
       command_line::add_arg(core_settings, daemon_args::arg_max_log_files);
       command_line::add_arg(core_settings, daemon_args::arg_max_concurrency);
+      command_line::add_arg(core_settings, daemon_args::arg_public_node);
       command_line::add_arg(core_settings, daemon_args::arg_zmq_rpc_bind_ip);
       command_line::add_arg(core_settings, daemon_args::arg_zmq_rpc_bind_port);
 
@@ -288,7 +341,7 @@ int main(int argc, char const * argv[])
 
     MINFO("Moving from main() into the daemonize now.");
 
-    return daemonizer::daemonize(argc, argv, daemonize::t_executor{}, vm) ? 0 : 1;
+    return daemonizer::daemonize(argc, argv, daemonize::t_executor{parse_public_rpc_port(vm)}, vm) ? 0 : 1;
   }
   catch (std::exception const & ex)
   {

src/daemon/rpc_command_executor.cpp

@@ -61,8 +61,9 @@ namespace {
     peer_id_str >> id_str;
     epee::string_tools::xtype_to_string(peer.port, port_str);
     std::string addr_str = ip_str + ":" + port_str;
+    std::string rpc_port = peer.rpc_port ? std::to_string(peer.rpc_port) : "-";
     std::string pruning_seed = epee::string_tools::to_string_hex(peer.pruning_seed);
-    tools::msg_writer() << boost::format("%-10s %-25s %-25s %-4s %s") % prefix % id_str % addr_str % pruning_seed % elapsed;
+    tools::msg_writer() << boost::format("%-10s %-25s %-25s %-5s %-4s %s") % prefix % id_str % addr_str % rpc_port % pruning_seed % elapsed;
   }
 
   void print_block_header(cryptonote::block_header_response const & header)

src/p2p/net_node.h

@@ -210,6 +210,7 @@ namespace nodetool
     node_server(t_payload_net_handler& payload_handler)
       : m_payload_handler(payload_handler),
         m_external_port(0),
+        m_rpc_port(0),
         m_allow_local_ip(false),
         m_hide_my_port(false),
         m_no_igd(false),
@@ -399,6 +400,12 @@ namespace nodetool
       m_save_graph = save_graph;
       epee::net_utils::connection_basic::set_save_graph(save_graph);
     }
+
+    void set_rpc_port(uint16_t rpc_port)
+    {
+      m_rpc_port = rpc_port;
+    }
+
   private:
     std::string m_config_folder;
 
@@ -406,6 +413,7 @@ namespace nodetool
     bool m_first_connection_maker_call;
     uint32_t m_listening_port;
     uint32_t m_external_port;
+    uint16_t m_rpc_port;
     bool m_allow_local_ip;
     bool m_hide_my_port;
     bool m_no_igd;

src/p2p/net_node.inl

@@ -864,7 +864,8 @@ namespace nodetool
         }
 
         pi = context.peer_id = rsp.node_data.peer_id;
-        m_network_zones.at(context.m_remote_address.get_zone()).m_peerlist.set_peer_just_seen(rsp.node_data.peer_id, context.m_remote_address, context.m_pruning_seed);
+        context.m_rpc_port = rsp.node_data.rpc_port;
+        m_network_zones.at(context.m_remote_address.get_zone()).m_peerlist.set_peer_just_seen(rsp.node_data.peer_id, context.m_remote_address, context.m_pruning_seed, context.m_rpc_port);
 
         // move
         for (auto const& zone : m_network_zones)
@@ -930,7 +931,7 @@ namespace nodetool
         add_host_fail(context.m_remote_address);
       }
       if(!context.m_is_income)
-        m_network_zones.at(context.m_remote_address.get_zone()).m_peerlist.set_peer_just_seen(context.peer_id, context.m_remote_address, context.m_pruning_seed);
+        m_network_zones.at(context.m_remote_address.get_zone()).m_peerlist.set_peer_just_seen(context.peer_id, context.m_remote_address, context.m_pruning_seed, context.m_rpc_port);
       m_payload_handler.process_payload_sync_data(rsp.payload_data, context, false);
     });
 
@@ -1094,6 +1095,7 @@ namespace nodetool
     time(&last_seen);
     pe_local.last_seen = static_cast<int64_t>(last_seen);
     pe_local.pruning_seed = con->m_pruning_seed;
+    pe_local.rpc_port = con->m_rpc_port;
     zone.m_peerlist.append_with_peer_white(pe_local);
     //update last seen and push it to peerlist manager
 
@@ -1648,6 +1650,7 @@ namespace nodetool
       node_data.my_port = m_external_port ? m_external_port : m_listening_port;
     else
       node_data.my_port = 0;
+    node_data.rpc_port = zone.m_can_pingback ? m_rpc_port : 0;
     node_data.network_id = m_network_id;
     return true;
   }
@@ -2003,6 +2006,7 @@ namespace nodetool
     //associate peer_id with this connection
     context.peer_id = arg.node_data.peer_id;
     context.m_in_timedsync = false;
+    context.m_rpc_port = arg.node_data.rpc_port;
 
     if(arg.node_data.peer_id != zone.m_config.m_peer_id && arg.node_data.my_port && zone.m_can_pingback)
     {
@@ -2022,6 +2026,7 @@ namespace nodetool
         pe.last_seen = static_cast<int64_t>(last_seen);
         pe.id = peer_id_l;
         pe.pruning_seed = context.m_pruning_seed;
+        pe.rpc_port = context.m_rpc_port;
         this->m_network_zones.at(context.m_remote_address.get_zone()).m_peerlist.append_with_peer_white(pe);
         LOG_DEBUG_CC(context, "PING SUCCESS " << context.m_remote_address.host_str() << ":" << port_l);
       });
@@ -2322,7 +2327,7 @@ namespace nodetool
       }
       else
       {
-        zone.second.m_peerlist.set_peer_just_seen(pe.id, pe.adr, pe.pruning_seed);
+        zone.second.m_peerlist.set_peer_just_seen(pe.id, pe.adr, pe.pruning_seed, pe.rpc_port);
         LOG_PRINT_L2("PEER PROMOTED TO WHITE PEER LIST IP address: " << pe.adr.host_str() << " Peer ID: " << peerid_type(pe.id));
       }
     }

src/p2p/net_peerlist.h

@@ -111,7 +111,7 @@ namespace nodetool
     bool append_with_peer_white(const peerlist_entry& pr);
     bool append_with_peer_gray(const peerlist_entry& pr);
     bool append_with_peer_anchor(const anchor_peerlist_entry& ple);
-    bool set_peer_just_seen(peerid_type peer, const epee::net_utils::network_address& addr, uint32_t pruning_seed);
+    bool set_peer_just_seen(peerid_type peer, const epee::net_utils::network_address& addr, uint32_t pruning_seed, uint16_t rpc_port);
     bool set_peer_unreachable(const peerlist_entry& pr);
     bool is_host_allowed(const epee::net_utils::network_address &address);
     bool get_random_gray_peer(peerlist_entry& pe);
@@ -295,7 +295,7 @@ namespace nodetool
   }
   //--------------------------------------------------------------------------------------------------
   inline
-  bool peerlist_manager::set_peer_just_seen(peerid_type peer, const epee::net_utils::network_address& addr, uint32_t pruning_seed)
+  bool peerlist_manager::set_peer_just_seen(peerid_type peer, const epee::net_utils::network_address& addr, uint32_t pruning_seed, uint16_t rpc_port)
   {
     TRY_ENTRY();
     CRITICAL_REGION_LOCAL(m_peerlist_lock);
@@ -305,6 +305,7 @@ namespace nodetool
     ple.id = peer;
     ple.last_seen = time(NULL);
     ple.pruning_seed = pruning_seed;
+    ple.rpc_port = rpc_port;
     return append_with_peer_white(ple);
     CATCH_ENTRY_L0("peerlist_manager::set_peer_just_seen()", false);
   }

src/p2p/net_peerlist_boost_serialization.h

@@ -41,6 +41,8 @@
 #include "common/pruning.h"
 #endif
 
+BOOST_CLASS_VERSION(nodetool::peerlist_entry, 2)
+
 namespace boost
 {
   namespace serialization
@@ -152,6 +154,13 @@ namespace boost
         pl.pruning_seed = tools::make_pruning_seed(1+pl.adr.as<epee::net_utils::ipv4_network_address>().ip() % (1<<CRYPTONOTE_PRUNING_LOG_STRIPES), CRYPTONOTE_PRUNING_LOG_STRIPES);
       }
 #endif
+      if (ver < 2)
+      {
+        if (!typename Archive::is_saving())
+          pl.rpc_port = 0;
+        return;
+      }
+      a & pl.rpc_port;
     }
 
     template <class Archive, class ver_type>

src/p2p/p2p_protocol_defs.h

@@ -75,12 +75,14 @@ namespace nodetool
     peerid_type id;
     int64_t last_seen;
     uint32_t pruning_seed;
+    uint16_t rpc_port;
 
     BEGIN_KV_SERIALIZE_MAP()
       KV_SERIALIZE(adr)
       KV_SERIALIZE(id)
       KV_SERIALIZE(last_seen)
       KV_SERIALIZE_OPT(pruning_seed, (uint32_t)0)
+      KV_SERIALIZE_OPT(rpc_port, (uint16_t)0)
     END_KV_SERIALIZE_MAP()
   };
   typedef peerlist_entry_base<epee::net_utils::network_address> peerlist_entry;
@@ -126,7 +128,11 @@ namespace nodetool
     ss << std::setfill ('0') << std::setw (8) << std::hex << std::noshowbase;
     for(const peerlist_entry& pe: pl)
     {
-      ss << pe.id << "\t" << pe.adr.str() << " \tpruning seed " << pe.pruning_seed << " \tlast_seen: " << epee::misc_utils::get_time_interval_string(now_time - pe.last_seen) << std::endl;
+      ss << pe.id << "\t" << pe.adr.str() 
+        << " \trpc port " << (pe.rpc_port > 0 ? std::to_string(pe.rpc_port) : "-")
+        << " \tpruning seed " << pe.pruning_seed 
+        << " \tlast_seen: " << epee::misc_utils::get_time_interval_string(now_time - pe.last_seen) 
+        << std::endl;
     }
     return ss.str();
   }
@@ -157,6 +163,7 @@ namespace nodetool
     uuid network_id;                   
     uint64_t local_time;
     uint32_t my_port;
+    uint16_t rpc_port;
     peerid_type peer_id;
 
     BEGIN_KV_SERIALIZE_MAP()
@@ -164,6 +171,7 @@ namespace nodetool
       KV_SERIALIZE(peer_id)
       KV_SERIALIZE(local_time)
       KV_SERIALIZE(my_port)
+      KV_SERIALIZE_OPT(rpc_port, (uint16_t)(0))
     END_KV_SERIALIZE_MAP()
   };
   
@@ -209,7 +217,7 @@ namespace nodetool
             {
               const epee::net_utils::network_address  &na = p.adr;
               const epee::net_utils::ipv4_network_address &ipv4 = na.as<const epee::net_utils::ipv4_network_address>();
-              local_peerlist.push_back(peerlist_entry_base<network_address_old>({{ipv4.ip(), ipv4.port()}, p.id, p.last_seen, p.pruning_seed}));
+              local_peerlist.push_back(peerlist_entry_base<network_address_old>({{ipv4.ip(), ipv4.port()}, p.id, p.last_seen, p.pruning_seed, p.rpc_port}));
             }
             else
               MDEBUG("Not including in legacy peer list: " << p.adr.str());
@@ -224,7 +232,7 @@ namespace nodetool
             std::vector<peerlist_entry_base<network_address_old>> local_peerlist;
             epee::serialization::selector<is_store>::serialize_stl_container_pod_val_as_blob(local_peerlist, stg, hparent_section, "local_peerlist");
             for (const auto &p: local_peerlist)
-              ((response&)this_ref).local_peerlist_new.push_back(peerlist_entry({epee::net_utils::ipv4_network_address(p.adr.ip, p.adr.port), p.id, p.last_seen, p.pruning_seed}));
+              ((response&)this_ref).local_peerlist_new.push_back(peerlist_entry({epee::net_utils::ipv4_network_address(p.adr.ip, p.adr.port), p.id, p.last_seen, p.pruning_seed, p.rpc_port}));
           }
         }
       END_KV_SERIALIZE_MAP()
@@ -466,7 +474,3 @@ namespace nodetool
   }
 
 }
-
-BOOST_CLASS_VERSION(nodetool::peerlist_entry, 1)
-
-

src/rpc/core_rpc_server.cpp

@@ -910,9 +910,9 @@ namespace cryptonote
     {
       if (entry.adr.get_type_id() == epee::net_utils::ipv4_network_address::get_type_id())
         res.white_list.emplace_back(entry.id, entry.adr.as<epee::net_utils::ipv4_network_address>().ip(),
-            entry.adr.as<epee::net_utils::ipv4_network_address>().port(), entry.last_seen, entry.pruning_seed);
+            entry.adr.as<epee::net_utils::ipv4_network_address>().port(), entry.last_seen, entry.pruning_seed, entry.rpc_port);
       else
-        res.white_list.emplace_back(entry.id, entry.adr.str(), entry.last_seen, entry.pruning_seed);
+        res.white_list.emplace_back(entry.id, entry.adr.str(), entry.last_seen, entry.pruning_seed, entry.rpc_port);
     }
 
     res.gray_list.reserve(gray_list.size());
@@ -920,9 +920,9 @@ namespace cryptonote
     {
       if (entry.adr.get_type_id() == epee::net_utils::ipv4_network_address::get_type_id())
         res.gray_list.emplace_back(entry.id, entry.adr.as<epee::net_utils::ipv4_network_address>().ip(),
-            entry.adr.as<epee::net_utils::ipv4_network_address>().port(), entry.last_seen, entry.pruning_seed);
+            entry.adr.as<epee::net_utils::ipv4_network_address>().port(), entry.last_seen, entry.pruning_seed, entry.rpc_port);
       else
-        res.gray_list.emplace_back(entry.id, entry.adr.str(), entry.last_seen, entry.pruning_seed);
+        res.gray_list.emplace_back(entry.id, entry.adr.str(), entry.last_seen, entry.pruning_seed, entry.rpc_port);
     }
 
     res.status = CORE_RPC_STATUS_OK;

src/rpc/core_rpc_server.h

@@ -53,6 +53,7 @@ namespace cryptonote
   {
   public:
 
+    static const command_line::arg_descriptor<bool> arg_public_node;
     static const command_line::arg_descriptor<std::string, false, true, 2> arg_rpc_bind_port;
     static const command_line::arg_descriptor<std::string> arg_rpc_restricted_bind_port;
     static const command_line::arg_descriptor<bool> arg_restricted_rpc;

src/rpc/core_rpc_server_commands_defs.h

@@ -84,7 +84,7 @@ namespace cryptonote
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define CORE_RPC_VERSION_MAJOR 2
-#define CORE_RPC_VERSION_MINOR 3
+#define CORE_RPC_VERSION_MINOR 4
 #define MAKE_CORE_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define CORE_RPC_VERSION MAKE_CORE_RPC_VERSION(CORE_RPC_VERSION_MAJOR, CORE_RPC_VERSION_MINOR)
 
@@ -1318,16 +1318,17 @@ namespace cryptonote
     std::string host;
     uint32_t ip;
     uint16_t port;
+    uint16_t rpc_port;
     uint64_t last_seen;
     uint32_t pruning_seed;
 
     peer() = default;
 
-    peer(uint64_t id, const std::string &host, uint64_t last_seen, uint32_t pruning_seed)
-      : id(id), host(host), ip(0), port(0), last_seen(last_seen), pruning_seed(pruning_seed)
+    peer(uint64_t id, const std::string &host, uint64_t last_seen, uint32_t pruning_seed, uint16_t rpc_port)
+      : id(id), host(host), ip(0), port(0), rpc_port(rpc_port), last_seen(last_seen), pruning_seed(pruning_seed)
     {}
-    peer(uint64_t id, uint32_t ip, uint16_t port, uint64_t last_seen, uint32_t pruning_seed)
-      : id(id), host(std::to_string(ip)), ip(ip), port(port), last_seen(last_seen), pruning_seed(pruning_seed)
+    peer(uint64_t id, uint32_t ip, uint16_t port, uint64_t last_seen, uint32_t pruning_seed, uint16_t rpc_port)
+      : id(id), host(std::to_string(ip)), ip(ip), port(port), rpc_port(rpc_port), last_seen(last_seen), pruning_seed(pruning_seed)
     {}
 
     BEGIN_KV_SERIALIZE_MAP()
@@ -1335,6 +1336,7 @@ namespace cryptonote
       KV_SERIALIZE(host)
       KV_SERIALIZE(ip)
       KV_SERIALIZE(port)
+      KV_SERIALIZE_OPT(rpc_port, (uint16_t)0)
       KV_SERIALIZE(last_seen)
       KV_SERIALIZE_OPT(pruning_seed, (uint32_t)0)
     END_KV_SERIALIZE_MAP()

src/rpc/message_data_structs.h

@@ -78,6 +78,7 @@ namespace rpc
     uint64_t id;
     uint32_t ip;
     uint16_t port;
+    uint16_t rpc_port;
     uint64_t last_seen;
     uint32_t pruning_seed;
   };

src/serialization/json_object.cpp

@@ -570,6 +570,7 @@ void toJsonValue(rapidjson::Document& doc, const cryptonote::connection_info& in
 
   INSERT_INTO_JSON_OBJECT(val, doc, ip, info.ip);
   INSERT_INTO_JSON_OBJECT(val, doc, port, info.port);
+  INSERT_INTO_JSON_OBJECT(val, doc, rpc_port, info.rpc_port);
 
   INSERT_INTO_JSON_OBJECT(val, doc, peer_id, info.peer_id);
 
@@ -604,6 +605,7 @@ void fromJsonValue(const rapidjson::Value& val, cryptonote::connection_info& inf
 
   GET_FROM_JSON_OBJECT(val, info.ip, ip);
   GET_FROM_JSON_OBJECT(val, info.port, port);
+  GET_FROM_JSON_OBJECT(val, info.rpc_port, rpc_port);
 
   GET_FROM_JSON_OBJECT(val, info.peer_id, peer_id);
 
@@ -733,6 +735,7 @@ void toJsonValue(rapidjson::Document& doc, const cryptonote::rpc::peer& peer, ra
   INSERT_INTO_JSON_OBJECT(val, doc, id, peer.id);
   INSERT_INTO_JSON_OBJECT(val, doc, ip, peer.ip);
   INSERT_INTO_JSON_OBJECT(val, doc, port, peer.port);
+  INSERT_INTO_JSON_OBJECT(val, doc, rpc_port, peer.rpc_port);
   INSERT_INTO_JSON_OBJECT(val, doc, last_seen, peer.last_seen);
   INSERT_INTO_JSON_OBJECT(val, doc, pruning_seed, peer.pruning_seed);
 }
@@ -748,6 +751,7 @@ void fromJsonValue(const rapidjson::Value& val, cryptonote::rpc::peer& peer)
   GET_FROM_JSON_OBJECT(val, peer.id, id);
   GET_FROM_JSON_OBJECT(val, peer.ip, ip);
   GET_FROM_JSON_OBJECT(val, peer.port, port);
+  GET_FROM_JSON_OBJECT(val, peer.rpc_port, rpc_port);
   GET_FROM_JSON_OBJECT(val, peer.last_seen, last_seen);
   GET_FROM_JSON_OBJECT(val, peer.pruning_seed, pruning_seed);
 }