p2p: close the right number of connections on setting max in/out peers

contrib/epee/include/net/levin_protocol_handler_async.h

@@ -99,6 +99,8 @@ public:
   template<class callback_t>
   bool for_connection(const boost::uuids::uuid &connection_id, const callback_t &cb);
   size_t get_connections_count();
+  size_t get_out_connections_count();
+  size_t get_in_connections_count();
   void set_handler(levin_commands_handler<t_connection_context>* handler, void (*destroy)(levin_commands_handler<t_connection_context>*) = NULL);
 
   async_protocol_handler_config():m_pcommands_handler(NULL), m_pcommands_handler_destroy(NULL), m_max_packet_size(LEVIN_DEFAULT_MAX_PACKET_SIZE), m_invoke_timeout(LEVIN_DEFAULT_TIMEOUT_PRECONFIGURED)
@@ -882,6 +884,28 @@ size_t async_protocol_handler_config<t_connection_context>::get_connections_coun
 }
 //------------------------------------------------------------------------------------------
 template<class t_connection_context>
+size_t async_protocol_handler_config<t_connection_context>::get_out_connections_count()
+{
+  CRITICAL_REGION_LOCAL(m_connects_lock);
+  size_t count = 0;
+  for (const auto &c: m_connects)
+    if (!c.second->m_connection_context.m_is_income)
+      ++count;
+  return count;
+}
+//------------------------------------------------------------------------------------------
+template<class t_connection_context>
+size_t async_protocol_handler_config<t_connection_context>::get_in_connections_count()
+{
+  CRITICAL_REGION_LOCAL(m_connects_lock);
+  size_t count = 0;
+  for (const auto &c: m_connects)
+    if (c.second->m_connection_context.m_is_income)
+      ++count;
+  return count;
+}
+//------------------------------------------------------------------------------------------
+template<class t_connection_context>
 void async_protocol_handler_config<t_connection_context>::set_handler(levin_commands_handler<t_connection_context>* handler, void (*destroy)(levin_commands_handler<t_connection_context>*))
 {
   if (m_pcommands_handler && m_pcommands_handler_destroy)

src/p2p/net_node.inl

@@ -2207,7 +2207,7 @@ namespace nodetool
     auto public_zone = m_network_zones.find(epee::net_utils::zone::public_);
     if (public_zone != m_network_zones.end())
     {
-      const auto current = public_zone->second.m_config.m_net_config.max_out_connection_count;
+      const auto current = public_zone->second.m_net_server.get_config_object().get_out_connections_count();
       public_zone->second.m_config.m_net_config.max_out_connection_count = count;
       if(current > count)
         public_zone->second.m_net_server.get_config_object().del_out_connections(current - count);
@@ -2220,7 +2220,7 @@ namespace nodetool
     auto public_zone = m_network_zones.find(epee::net_utils::zone::public_);
     if (public_zone != m_network_zones.end())
     {
-      const auto current = public_zone->second.m_config.m_net_config.max_in_connection_count;
+      const auto current = public_zone->second.m_net_server.get_config_object().get_in_connections_count();
       public_zone->second.m_config.m_net_config.max_in_connection_count = count;
       if(current > count)
         public_zone->second.m_net_server.get_config_object().del_in_connections(current - count);