Upgrades to epee::net_utils::network_address

- internal nullptr checks
  - prevent modifications to network_address (shallow copy issues)
  - automagically works with any type containing interface functions
  - removed fnv1a hashing
  - ipv4_network_address now flattened with no base class

contrib/epee/include/net/abstract_tcp_server2.inl

@@ -137,14 +137,14 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     CHECK_AND_NO_ASSERT_MES(!ec, false, "Failed to get local endpoint: " << ec.message() << ':' << ec.value());
 
     context = boost::value_initialized<t_connection_context>();
-    long ip_ = boost::asio::detail::socket_ops::host_to_network_long(remote_ep.address().to_v4().to_ulong());
+    const unsigned long ip_{boost::asio::detail::socket_ops::host_to_network_long(remote_ep.address().to_v4().to_ulong())};
 
     // create a random uuid
     boost::uuids::uuid random_uuid;
     // that stuff turns out to be included, even though it's from src... Taking advantage
     random_uuid = crypto::rand<boost::uuids::uuid>();
 
-    context.set_details(random_uuid, new epee::net_utils::ipv4_network_address(ip_, remote_ep.port()), is_income);
+    context.set_details(random_uuid, epee::net_utils::ipv4_network_address(ip_, remote_ep.port()), is_income);
     _dbg3("[sock " << socket_.native_handle() << "] new connection from " << print_connection_context_short(context) <<
       " to " << local_ep.address().to_string() << ':' << local_ep.port() <<
       ", total sockets objects " << m_ref_sock_count);

contrib/epee/include/net/net_utils_base.h

@@ -29,11 +29,12 @@
 #ifndef _NET_UTILS_BASE_H_
 #define _NET_UTILS_BASE_H_
 
-#include <typeinfo>
 #include <boost/asio/io_service.hpp>
 #include <boost/uuid/uuid.hpp>
+#include <memory>
+#include <typeinfo>
+#include <type_traits>
 #include "serialization/keyvalue_serialization.h"
-#include "net/local_ip.h"
 #include "string_tools.h"
 #include "misc_log_ex.h"
 
@@ -49,78 +50,119 @@ namespace epee
 {
 namespace net_utils
 {
-	struct network_address_base
+	class ipv4_network_address
 	{
-	public:
-		bool operator==(const network_address_base &other) const { return m_full_id == other.m_full_id; }
-		bool operator!=(const network_address_base &other) const { return !operator==(other); }
-		bool operator<(const network_address_base &other) const { return m_full_id < other.m_full_id; }
-		bool is_same_host(const network_address_base &other) const { return m_host_id == other.m_host_id; }
-		virtual std::string str() const = 0;
-		virtual std::string host_str() const = 0;
-		virtual bool is_loopback() const = 0;
-		virtual bool is_local() const = 0;
-		virtual uint8_t get_type_id() const = 0;
-	protected:
-		// A very simple non cryptographic hash function by Fowler, Noll, Vo
-		uint64_t fnv1a(const uint8_t *data, size_t len) const {
-			uint64_t h = 0xcbf29ce484222325;
-			while (len--)
-				h = (h ^ *data++) * 0x100000001b3;
-			return h;
-		}
-		uint64_t m_host_id;
-		uint64_t m_full_id;
-
-	protected:
-		virtual ~network_address_base() {}
-	};
-	struct ipv4_network_address: public network_address_base
-	{
-		void init_ids()
-		{
-			m_host_id = fnv1a((const uint8_t*)&m_ip, sizeof(m_ip));
-			m_full_id = fnv1a((const uint8_t*)&m_ip, sizeof(m_ip) + sizeof(m_port));
-		}
-	public:
-		ipv4_network_address(uint32_t ip, uint16_t port): network_address_base(), m_ip(ip), m_port(port) { init_ids(); }
-		uint32_t ip() const { return m_ip; }
-		uint16_t port() const { return m_port; }
-		virtual std::string str() const { return epee::string_tools::get_ip_string_from_int32(m_ip) + ":" + std::to_string(m_port); }
-		virtual std::string host_str() const { return epee::string_tools::get_ip_string_from_int32(m_ip); }
-		virtual bool is_loopback() const { return epee::net_utils::is_ip_loopback(m_ip); }
-		virtual bool is_local() const { return epee::net_utils::is_ip_local(m_ip); }
-		virtual uint8_t get_type_id() const { return ID; }
-	public: // serialization
-		static const uint8_t ID = 1;
-#pragma pack(push)
-#pragma pack(1)
 		uint32_t m_ip;
 		uint16_t m_port;
-#pragma pack(pop)
+
+	public:
+		constexpr ipv4_network_address(uint32_t ip, uint16_t port) noexcept
+			: m_ip(ip), m_port(port) {}
+
+		bool equal(const ipv4_network_address& other) const noexcept;
+		bool less(const ipv4_network_address& other) const noexcept;
+		constexpr bool is_same_host(const ipv4_network_address& other) const noexcept
+		{ return ip() == other.ip(); }
+
+		constexpr uint32_t ip() const noexcept { return m_ip; }
+		constexpr uint16_t port() const noexcept { return m_port; }
+		std::string str() const; 
+		std::string host_str() const;
+		bool is_loopback() const;
+		bool is_local() const;
+		static constexpr uint8_t get_type_id() noexcept { return ID; }
+
+		static const uint8_t ID = 1;
 		BEGIN_KV_SERIALIZE_MAP()
 			KV_SERIALIZE(m_ip)
 			KV_SERIALIZE(m_port)
-			if (!is_store)
-				const_cast<ipv4_network_address&>(this_ref).init_ids();
 		END_KV_SERIALIZE_MAP()
 	};
-	class network_address: public boost::shared_ptr<network_address_base>
+
+	inline bool operator==(const ipv4_network_address& lhs, const ipv4_network_address& rhs) noexcept
+	{ return lhs.equal(rhs); }
+	inline bool operator!=(const ipv4_network_address& lhs, const ipv4_network_address& rhs) noexcept
+	{ return !lhs.equal(rhs); }
+	inline bool operator<(const ipv4_network_address& lhs, const ipv4_network_address& rhs) noexcept
+	{ return lhs.less(rhs); }
+	inline bool operator<=(const ipv4_network_address& lhs, const ipv4_network_address& rhs) noexcept
+	{ return !rhs.less(lhs); }
+	inline bool operator>(const ipv4_network_address& lhs, const ipv4_network_address& rhs) noexcept
+	{ return rhs.less(lhs); }
+	inline bool operator>=(const ipv4_network_address& lhs, const ipv4_network_address& rhs) noexcept
+	{ return !lhs.less(rhs); }
+
+	class network_address
 	{
+		struct interface
+		{
+                        virtual ~interface() {};
+
+			virtual bool equal(const interface&) const = 0;
+			virtual bool less(const interface&) const = 0;
+			virtual bool is_same_host(const interface&) const = 0;
+
+			virtual std::string str() const = 0;
+			virtual std::string host_str() const = 0;
+			virtual bool is_loopback() const = 0;
+			virtual bool is_local() const = 0;
+			virtual uint8_t get_type_id() const = 0;
+		};
+
+		template<typename T>
+		struct implementation final : interface
+		{
+			T value;
+
+			implementation(const T& src) : value(src) {}
+			~implementation() = default;
+
+			// Type-checks for cast are done in cpp
+			static const T& cast(const interface& src) noexcept
+			{ return static_cast<const implementation<T>&>(src).value; }
+
+			virtual bool equal(const interface& other) const override
+			{ return value.equal(cast(other)); }
+
+			virtual bool less(const interface& other) const override
+			{ return value.less(cast(other)); }
+
+			virtual bool is_same_host(const interface& other) const override
+			{ return value.is_same_host(cast(other)); }
+
+			virtual std::string str() const override { return value.str(); }
+			virtual std::string host_str() const override { return value.host_str(); }
+			virtual bool is_loopback() const override { return value.is_loopback(); }
+			virtual bool is_local() const override { return value.is_local(); }
+			virtual uint8_t get_type_id() const override { return value.get_type_id(); }
+		};
+
+		std::shared_ptr<interface> self;
+
+		template<typename Type>
+		Type& as_mutable() const
+		{
+			// types `implmentation<Type>` and `implementation<const Type>` are unique
+			using Type_ = typename std::remove_const<Type>::type;
+			network_address::interface* const self_ = self.get(); // avoid clang warning in typeid
+			if (!self_ || typeid(implementation<Type_>) != typeid(*self_))
+				throw std::bad_cast{};
+			return static_cast<implementation<Type_>*>(self_)->value;
+		}
 	public:
-		network_address() {}
+		network_address() : self(nullptr) {}
-		network_address(ipv4_network_address *address): boost::shared_ptr<network_address_base>(address) {}
+		template<typename T>
-		bool operator==(const network_address &other) const { return (*this)->operator==(*other); }
+		network_address(const T& src)
-		bool operator!=(const network_address &other) const { return (*this)->operator!=(*other); }
+			: self(std::make_shared<implementation<T>>(src)) {}
-		bool operator<(const network_address &other) const { return (*this)->operator<(*other); }
+		bool equal(const network_address &other) const;
-		bool is_same_host(const network_address &other) const { return (*this)->is_same_host(*other); }
+		bool less(const network_address &other) const;
-		std::string str() const { return (*this) ? (*this)->str() : "<none>"; }
+		bool is_same_host(const network_address &other) const;
-		std::string host_str() const { return (*this) ? (*this)->host_str() : "<none>"; }
+		std::string str() const { return self ? self->str() : "<none>"; }
-		bool is_loopback() const { return (*this)->is_loopback(); }
+		std::string host_str() const { return self ? self->host_str() : "<none>"; }
-		bool is_local() const { return (*this)->is_local(); }
+		bool is_loopback() const { return self ? self->is_loopback() : false; }
-		uint8_t get_type_id() const { return (*this)->get_type_id(); }
+		bool is_local() const { return self ? self->is_local() : false; }
-		template<typename Type> Type &as() { if (get_type_id() != Type::ID) throw std::runtime_error("Bad type"); return *(Type*)get(); }
+		uint8_t get_type_id() const { return self ? self->get_type_id() : 0; }
-		template<typename Type> const Type &as() const { if (get_type_id() != Type::ID) throw std::runtime_error("Bad type"); return *(const Type*)get(); }
+		template<typename Type> const Type &as() const { return as_mutable<const Type>(); }
 
 		BEGIN_KV_SERIALIZE_MAP()
 			uint8_t type = is_store ? this_ref.get_type_id() : 0;
@@ -129,13 +171,27 @@ namespace net_utils
 			{
 				case ipv4_network_address::ID:
 					if (!is_store)
-						const_cast<network_address&>(this_ref).reset(new ipv4_network_address(0, 0));
+						const_cast<network_address&>(this_ref) = ipv4_network_address{0, 0};
-					KV_SERIALIZE(template as<ipv4_network_address>());
+					KV_SERIALIZE(template as_mutable<ipv4_network_address>());
 					break;
 				default: MERROR("Unsupported network address type: " << type); return false;
 			}
 		END_KV_SERIALIZE_MAP()
 	};
+
+	inline bool operator==(const network_address& lhs, const network_address& rhs)
+	{ return lhs.equal(rhs); }
+	inline bool operator!=(const network_address& lhs, const network_address& rhs)
+	{ return !lhs.equal(rhs); }
+	inline bool operator<(const network_address& lhs, const network_address& rhs)
+	{ return lhs.less(rhs); }
+	inline bool operator<=(const network_address& lhs, const network_address& rhs)
+	{ return !rhs.less(lhs); }
+	inline bool operator>(const network_address& lhs, const network_address& rhs)
+	{ return rhs.less(lhs); }
+	inline bool operator>=(const network_address& lhs, const network_address& rhs)
+	{ return !lhs.less(rhs); }
+
 	inline bool create_network_address(network_address &address, const std::string &string, uint16_t default_port = 0)
 	{
 		uint32_t ip;
@@ -144,7 +200,7 @@ namespace net_utils
 		{
 			if (default_port && !port)
 				port = default_port;
-			address.reset(new ipv4_network_address(ip, port));
+			address = ipv4_network_address{ip, port};
 			return true;
 		}
 		return false;
@@ -182,7 +238,7 @@ namespace net_utils
     {}
 
     connection_context_base(): m_connection_id(),
-                               m_remote_address(new ipv4_network_address(0,0)),
+                               m_remote_address(ipv4_network_address{0,0}),
                                m_is_income(false),
                                m_started(time(NULL)),
                                m_last_recv(0),
@@ -235,7 +291,7 @@ namespace net_utils
     std::string print_connection_context(const connection_context_base& ctx)
   {
     std::stringstream ss;
-    ss << ctx.m_remote_address->str() << " " << epee::string_tools::get_str_from_guid_a(ctx.m_connection_id) << (ctx.m_is_income ? " INC":" OUT");
+    ss << ctx.m_remote_address.str() << " " << epee::string_tools::get_str_from_guid_a(ctx.m_connection_id) << (ctx.m_is_income ? " INC":" OUT");
     return ss.str();
   }
 
@@ -243,7 +299,7 @@ namespace net_utils
     std::string print_connection_context_short(const connection_context_base& ctx)
   {
     std::stringstream ss;
-    ss << ctx.m_remote_address->str() << (ctx.m_is_income ? " INC":" OUT");
+    ss << ctx.m_remote_address.str() << (ctx.m_is_income ? " INC":" OUT");
     return ss.str();
   }
 

contrib/epee/src/CMakeLists.txt

@@ -27,9 +27,9 @@
 # THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 if (USE_READLINE AND GNU_READLINE_FOUND)
-  add_library(epee STATIC hex.cpp http_auth.cpp mlog.cpp string_tools.cpp readline_buffer.cpp)
+  add_library(epee STATIC hex.cpp http_auth.cpp mlog.cpp net_utils_base.cpp string_tools.cpp readline_buffer.cpp)
 else()
-  add_library(epee STATIC hex.cpp http_auth.cpp mlog.cpp string_tools.cpp)
+  add_library(epee STATIC hex.cpp http_auth.cpp mlog.cpp net_utils_base.cpp string_tools.cpp)
 endif()
 
 # Build and install libepee if we're building for GUI

contrib/epee/src/net_utils_base.cpp

@@ -0,0 +1,60 @@
+
+#include "net/net_utils_base.h"
+
+#include <cstring>
+#include <typeindex>
+#include "net/local_ip.h"
+
+namespace epee { namespace net_utils
+{
+	const uint8_t ipv4_network_address::ID;
+
+	bool ipv4_network_address::equal(const ipv4_network_address& other) const noexcept
+	{ return is_same_host(other) && port() == other.port(); }
+
+	bool ipv4_network_address::less(const ipv4_network_address& other) const noexcept
+	{ return is_same_host(other) ? port() < other.port() : ip() < other.ip(); }
+
+	std::string ipv4_network_address::str() const
+	{ return string_tools::get_ip_string_from_int32(ip()) + ":" + std::to_string(port()); }
+
+	std::string ipv4_network_address::host_str() const { return string_tools::get_ip_string_from_int32(ip()); }
+	bool ipv4_network_address::is_loopback() const { return net_utils::is_ip_loopback(ip()); }
+	bool ipv4_network_address::is_local() const { return net_utils::is_ip_local(ip()); }
+
+
+	bool network_address::equal(const network_address& other) const
+	{
+		// clang typeid workaround
+		network_address::interface const* const self_ = self.get();
+		network_address::interface const* const other_self = other.self.get();
+		if (self_ == other_self) return true;
+		if (!self_ || !other_self) return false;
+		if (typeid(*self_) != typeid(*other_self)) return false;
+		return self_->equal(*other_self);
+	}
+
+	bool network_address::less(const network_address& other) const
+	{
+		// clang typeid workaround
+		network_address::interface const* const self_ = self.get();
+		network_address::interface const* const other_self = other.self.get();
+		if (self_ == other_self) return false;
+		if (!self_ || !other_self) return self == nullptr;
+		if (typeid(*self_) != typeid(*other_self))
+			return self_->get_type_id() < other_self->get_type_id();
+		return self_->less(*other_self);
+	}
+
+	bool network_address::is_same_host(const network_address& other) const
+	{
+		// clang typeid workaround
+		network_address::interface const* const self_ = self.get();
+		network_address::interface const* const other_self = other.self.get();
+		if (self_ == other_self) return true;
+		if (!self_ || !other_self) return false;
+		if (typeid(*self_) != typeid(*other_self)) return false;
+		return self_->is_same_host(*other_self);
+	}
+}}
+

src/p2p/net_node.inl

@@ -390,7 +390,7 @@ namespace nodetool
       ip::tcp::endpoint endpoint = *i;
       if (endpoint.address().is_v4())
       {
-        epee::net_utils::network_address na(new epee::net_utils::ipv4_network_address(boost::asio::detail::socket_ops::host_to_network_long(endpoint.address().to_v4().to_ulong()), endpoint.port()));
+        epee::net_utils::network_address na{epee::net_utils::ipv4_network_address{boost::asio::detail::socket_ops::host_to_network_long(endpoint.address().to_v4().to_ulong()), endpoint.port()}};
         seed_nodes.push_back(na);
         MINFO("Added seed node: " << na.str());
       }
@@ -1521,7 +1521,7 @@ namespace nodetool
       return false;
     std::string ip = epee::string_tools::get_ip_string_from_int32(actual_ip);
     std::string port = epee::string_tools::num_to_string_fast(node_data.my_port);
-    epee::net_utils::network_address address(new epee::net_utils::ipv4_network_address(actual_ip, node_data.my_port));
+    epee::net_utils::network_address address{epee::net_utils::ipv4_network_address(actual_ip, node_data.my_port)};
     peerid_type pr = node_data.peer_id;
     bool r = m_net_server.connect_async(ip, port, m_config.m_net_config.ping_connection_timeout, [cb, /*context,*/ address, pr, this](
       const typename net_server::t_connection_context& ping_context,
@@ -1669,7 +1669,7 @@ namespace nodetool
     if(arg.node_data.peer_id != m_config.m_peer_id && arg.node_data.my_port)
     {
       peerid_type peer_id_l = arg.node_data.peer_id;
-      uint32_t port_l = arg.node_data.my_port;      
+      uint32_t port_l = arg.node_data.my_port;
       //try ping to be sure that we can add this peer to peer_list
       try_ping(arg.node_data, context, [peer_id_l, port_l, context, this]()
       {
@@ -1678,7 +1678,7 @@ namespace nodetool
         //called only(!) if success pinged, update local peerlist
         peerlist_entry pe;
         const epee::net_utils::network_address na = context.m_remote_address;
-        pe.adr.reset(new epee::net_utils::ipv4_network_address(na.as<epee::net_utils::ipv4_network_address>().ip(), port_l));
+        pe.adr = epee::net_utils::ipv4_network_address(na.as<epee::net_utils::ipv4_network_address>().ip(), port_l);
         time_t last_seen;
         time(&last_seen);
         pe.last_seen = static_cast<int64_t>(last_seen);

src/p2p/net_peerlist_boost_serialization.h

@@ -31,11 +31,19 @@
 #pragma once
 
 #include "net/net_utils_base.h"
+#include "p2p/p2p_protocol_defs.h"
 
 namespace boost
 {
   namespace serialization
   {
+    template <class T, class Archive>
+    inline void do_serialize(Archive &a, epee::net_utils::network_address& na, T local)
+    {
+      if (typename Archive::is_saving()) local = na.as<T>();
+      a & local;
+      if (!typename Archive::is_saving()) na = local;
+    }
     template <class Archive, class ver_type>
     inline void serialize(Archive &a, epee::net_utils::network_address& na, const ver_type ver)
     {
@@ -46,10 +54,8 @@ namespace boost
       switch (type)
       {
         case epee::net_utils::ipv4_network_address::ID:
-          if (!typename Archive::is_saving())
+	  do_serialize(a, na, epee::net_utils::ipv4_network_address{0, 0});
-            na.reset(new epee::net_utils::ipv4_network_address(0, 0));
+	  break; 
-          a & na.as<epee::net_utils::ipv4_network_address>();
-          break;
         default:
           throw std::runtime_error("Unsupported network address type");
       }
@@ -57,13 +63,14 @@ namespace boost
     template <class Archive, class ver_type>
     inline void serialize(Archive &a, epee::net_utils::ipv4_network_address& na, const ver_type ver)
     {
-      a & na.m_ip;
+      uint32_t ip{na.ip()};
-      a & na.m_port;
+      uint16_t port{na.port()};
+      a & ip;
+      a & port;
       if (!typename Archive::is_saving())
-        na.init_ids();
+        na = epee::net_utils::ipv4_network_address{ip, port};
     }
 
-
     template <class Archive, class ver_type>
     inline void serialize(Archive &a,  nodetool::peerlist_entry& pl, const ver_type ver)
     {

src/p2p/p2p_protocol_defs.h

@@ -120,7 +120,7 @@ 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() << " \tlast_seen: " << epee::misc_utils::get_time_interval_string(now_time - pe.last_seen) << std::endl;
+      ss << pe.id << "\t" << pe.adr.str() << " \tlast_seen: " << epee::misc_utils::get_time_interval_string(now_time - pe.last_seen) << std::endl;
     }
     return ss.str();
   }
@@ -216,7 +216,7 @@ namespace nodetool
             std::list<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({new epee::net_utils::ipv4_network_address(p.adr.ip, p.adr.port), p.id, p.last_seen}));
+              ((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}));
           }
         }
       END_KV_SERIALIZE_MAP()
@@ -275,7 +275,7 @@ namespace nodetool
             std::list<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({new epee::net_utils::ipv4_network_address(p.adr.ip, p.adr.port), p.id, p.last_seen}));
+              ((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}));
           }
         }
       END_KV_SERIALIZE_MAP()

src/rpc/core_rpc_server.cpp

@@ -1395,7 +1395,7 @@ namespace cryptonote
       }
       else
       {
-        na.reset(new epee::net_utils::ipv4_network_address(i->ip, 0));
+        na = epee::net_utils::ipv4_network_address{i->ip, 0};
       }
       if (i->ban)
         m_p2p.block_host(na, i->seconds);

tests/unit_tests/ban.cpp

@@ -33,7 +33,7 @@
 #include "p2p/net_node.h"
 #include "cryptonote_protocol/cryptonote_protocol_handler.h"
 
-#define MAKE_IPV4_ADDRESS(a,b,c,d) new epee::net_utils::ipv4_network_address(MAKE_IP(a,b,c,d),0)
+#define MAKE_IPV4_ADDRESS(a,b,c,d) epee::net_utils::ipv4_network_address{MAKE_IP(a,b,c,d),0}
 
 namespace cryptonote {
   class blockchain_storage;

tests/unit_tests/epee_utils.cpp

@@ -27,6 +27,7 @@
 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <array>
+#include <boost/endian/conversion.hpp>
 #include <boost/range/algorithm/equal.hpp>
 #include <boost/range/algorithm_ext/iota.hpp>
 #include <cstdint>
@@ -42,7 +43,11 @@
 # include <arpa/inet.h>
 #endif
 
+#include "boost/archive/portable_binary_iarchive.hpp"
+#include "boost/archive/portable_binary_oarchive.hpp"
 #include "hex.h"
+#include "net/net_utils_base.h"
+#include "p2p/net_peerlist_boost_serialization.h"
 #include "span.h"
 #include "string_tools.h"
 
@@ -100,6 +105,40 @@ namespace
     boost::range::iota(out, 0);
     return out;
   }
+
+  #define CHECK_EQUAL(lhs, rhs) \
+    EXPECT_TRUE( lhs == rhs );  \
+    EXPECT_TRUE( rhs == lhs );  \
+    EXPECT_FALSE( lhs != rhs ); \
+    EXPECT_FALSE( rhs != lhs ); \
+    EXPECT_FALSE( lhs < rhs );  \
+    EXPECT_FALSE( rhs < lhs );  \
+    EXPECT_TRUE( lhs <= rhs );  \
+    EXPECT_TRUE( rhs <= lhs );  \
+    EXPECT_FALSE( lhs > rhs );  \
+    EXPECT_FALSE( rhs > lhs );  \
+    EXPECT_TRUE( lhs >= rhs );  \
+    EXPECT_TRUE( rhs >= lhs )
+
+  #define CHECK_LESS(lhs, rhs)   \
+    EXPECT_FALSE( lhs == rhs );  \
+    EXPECT_FALSE( rhs == lhs );  \
+    EXPECT_TRUE( lhs != rhs );   \
+    EXPECT_TRUE( rhs != lhs );   \
+    EXPECT_TRUE( lhs < rhs );    \
+    EXPECT_FALSE( rhs < lhs );   \
+    EXPECT_TRUE( lhs <= rhs );   \
+    EXPECT_FALSE( rhs <= lhs );  \
+    EXPECT_FALSE( lhs > rhs );   \
+    EXPECT_TRUE( rhs > lhs );    \
+    EXPECT_FALSE( lhs >= rhs );  \
+    EXPECT_TRUE( rhs >= lhs )
+
+  #ifdef BOOST_LITTLE_ENDIAN
+    #define CHECK_LESS_ENDIAN(lhs, rhs) CHECK_LESS( rhs , lhs )
+  #else
+    #define CHECK_LESS_ENDIAN(lhs, rhs) CHECK_LESS( lhs , rhs )
+  #endif
 }
 
 TEST(Span, Traits)
@@ -419,3 +458,195 @@ TEST(StringTools, GetIpInt32)
   EXPECT_EQ(htonl(0xff0aff00), ip);
 }
 
+TEST(NetUtils, IPv4NetworkAddress)
+{
+  const auto ip1 = boost::endian::native_to_big(0x330012FFu);
+  const auto ip_loopback = boost::endian::native_to_big(0x7F000001u);
+  const auto ip_local = boost::endian::native_to_big(0x0A000000u);
+
+  epee::net_utils::ipv4_network_address address1{ip1, 65535};
+  CHECK_EQUAL(address1, address1);
+  EXPECT_STREQ("51.0.18.255:65535", address1.str().c_str());
+  EXPECT_STREQ("51.0.18.255", address1.host_str().c_str());
+  EXPECT_FALSE(address1.is_loopback());
+  EXPECT_FALSE(address1.is_local());
+  EXPECT_EQ(epee::net_utils::ipv4_network_address::ID, address1.get_type_id());
+  EXPECT_EQ(ip1, address1.ip());
+  EXPECT_EQ(65535, address1.port());
+  EXPECT_TRUE(epee::net_utils::ipv4_network_address{std::move(address1)} == address1);
+  EXPECT_TRUE(epee::net_utils::ipv4_network_address{address1} == address1);
+
+  const epee::net_utils::ipv4_network_address loopback{ip_loopback, 0};
+  CHECK_EQUAL(loopback, loopback);
+  CHECK_LESS_ENDIAN(address1, loopback);
+  EXPECT_STREQ("127.0.0.1:0", loopback.str().c_str());
+  EXPECT_STREQ("127.0.0.1", loopback.host_str().c_str());
+  EXPECT_TRUE(loopback.is_loopback());
+  EXPECT_FALSE(loopback.is_local());
+  EXPECT_EQ(epee::net_utils::ipv4_network_address::ID, address1.get_type_id());
+  EXPECT_EQ(ip_loopback, loopback.ip());
+  EXPECT_EQ(0, loopback.port());
+
+  const epee::net_utils::ipv4_network_address local{ip_local, 8080};
+  CHECK_EQUAL(local, local);
+  CHECK_LESS(local, address1);
+  CHECK_LESS(local, loopback);
+  EXPECT_FALSE(local.is_loopback());
+  EXPECT_TRUE(local.is_local());
+
+  epee::net_utils::ipv4_network_address address2{ip1, 55};
+  CHECK_EQUAL(address2, address2);
+  CHECK_LESS_ENDIAN(address2, loopback);
+  CHECK_LESS(local, address2);
+  EXPECT_STREQ("51.0.18.255:55", address2.str().c_str());
+  EXPECT_STREQ("51.0.18.255", address2.host_str().c_str());
+
+
+  address2 = std::move(address1);
+  CHECK_EQUAL(address2, address1);
+
+  address2 = local;
+  CHECK_EQUAL(address2, local);
+  CHECK_LESS(address2, address1);
+
+  {
+    std::stringstream stream;
+    {
+      boost::archive::portable_binary_oarchive ostream{stream};
+      ostream << address1;
+    }
+    {
+      boost::archive::portable_binary_iarchive istream{stream};
+      istream >> address2;
+    }
+  }
+  CHECK_EQUAL(address1, address2);
+  EXPECT_EQ(ip1, address2.ip());
+  EXPECT_EQ(65535, address2.port());
+}
+
+TEST(NetUtils, NetworkAddress)
+{
+  const auto ip1 = boost::endian::native_to_big(0x330012FFu);
+  const auto ip_loopback = boost::endian::native_to_big(0x7F000001u);
+  const auto ip_local = boost::endian::native_to_big(0x0A000000u);
+
+  struct custom_address {
+    constexpr static bool equal(const custom_address&) noexcept { return false; }
+    constexpr static bool less(const custom_address&) noexcept { return false; }
+    constexpr static bool is_same_host(const custom_address&) noexcept { return false; }
+    constexpr static bool is_loopback() noexcept { return false; }
+    constexpr static bool is_local() noexcept { return false; }
+    static std::string str() { return {}; }
+    static std::string host_str() { return {}; }
+    constexpr static uint8_t get_type_id() noexcept { return uint8_t(-1); }
+  };
+
+  const epee::net_utils::network_address empty;
+  CHECK_EQUAL(empty, empty);
+  EXPECT_TRUE(empty.is_same_host(empty));
+  EXPECT_STREQ("<none>", empty.str().c_str());
+  EXPECT_STREQ("<none>", empty.host_str().c_str());
+  EXPECT_FALSE(empty.is_loopback());
+  EXPECT_FALSE(empty.is_local());
+  EXPECT_EQ(0, empty.get_type_id());
+  EXPECT_THROW(empty.as<custom_address>(), std::bad_cast);
+
+  epee::net_utils::network_address address1{
+    epee::net_utils::ipv4_network_address{ip1, 65535}
+  };
+  CHECK_EQUAL(address1, address1);
+  CHECK_EQUAL(epee::net_utils::network_address{address1}, address1);
+  CHECK_LESS(empty, address1);
+  EXPECT_TRUE(address1.is_same_host(address1));
+  EXPECT_FALSE(empty.is_same_host(address1));
+  EXPECT_FALSE(address1.is_same_host(empty));
+  EXPECT_STREQ("51.0.18.255:65535", address1.str().c_str());
+  EXPECT_STREQ("51.0.18.255", address1.host_str().c_str());
+  EXPECT_FALSE(address1.is_loopback());
+  EXPECT_FALSE(address1.is_local());
+  EXPECT_EQ(epee::net_utils::ipv4_network_address::ID, address1.get_type_id());
+  EXPECT_NO_THROW(address1.as<epee::net_utils::ipv4_network_address>());
+  EXPECT_THROW(address1.as<custom_address>(), std::bad_cast);
+
+  const epee::net_utils::network_address loopback{
+    epee::net_utils::ipv4_network_address{ip_loopback, 0}
+  };
+  CHECK_EQUAL(loopback, loopback);
+  CHECK_LESS(empty, loopback);
+  CHECK_LESS_ENDIAN(address1, loopback);
+  EXPECT_TRUE(loopback.is_same_host(loopback));
+  EXPECT_FALSE(loopback.is_same_host(address1));
+  EXPECT_FALSE(address1.is_same_host(loopback));
+  EXPECT_STREQ("127.0.0.1:0", loopback.str().c_str());
+  EXPECT_STREQ("127.0.0.1", loopback.host_str().c_str());
+  EXPECT_TRUE(loopback.is_loopback());
+  EXPECT_FALSE(loopback.is_local());
+  EXPECT_EQ(epee::net_utils::ipv4_network_address::ID, address1.get_type_id());
+
+  const epee::net_utils::network_address local{
+    epee::net_utils::ipv4_network_address{ip_local, 8080}
+  };
+  CHECK_EQUAL(local, local);
+  CHECK_LESS(local, loopback);
+  CHECK_LESS(local, address1);
+  EXPECT_FALSE(local.is_loopback());
+  EXPECT_TRUE(local.is_local());
+
+  epee::net_utils::network_address address2{
+    epee::net_utils::ipv4_network_address{ip1, 55}
+  };
+  CHECK_EQUAL(address2, address2);
+  CHECK_LESS(address2, address1);
+  CHECK_LESS(local, address2);
+  CHECK_LESS_ENDIAN(address2, loopback);
+  EXPECT_TRUE(address1.is_same_host(address2));
+  EXPECT_TRUE(address2.is_same_host(address1));
+  EXPECT_STREQ("51.0.18.255:55", address2.str().c_str());
+  EXPECT_STREQ("51.0.18.255", address2.host_str().c_str());
+
+  address2 = std::move(address1);
+  CHECK_EQUAL(address1, address1);
+  CHECK_EQUAL(empty, address1);
+  CHECK_LESS(address1, address2);
+  EXPECT_FALSE(address1.is_same_host(address2));
+  EXPECT_FALSE(address2.is_same_host(address1));
+  EXPECT_STREQ("51.0.18.255:65535", address2.str().c_str());
+  EXPECT_STREQ("51.0.18.255", address2.host_str().c_str());
+  EXPECT_FALSE(address1.is_loopback());
+  EXPECT_FALSE(address1.is_local());
+  EXPECT_THROW(address1.as<epee::net_utils::ipv4_network_address>(), std::bad_cast);
+  EXPECT_NO_THROW(address2.as<epee::net_utils::ipv4_network_address>());
+
+  address2 = local;
+  CHECK_EQUAL(address2, local);
+  CHECK_LESS(address1, address2);
+  EXPECT_TRUE(address2.is_same_host(local));
+  EXPECT_TRUE(local.is_same_host(address2));
+  EXPECT_FALSE(address2.is_same_host(address1));
+  EXPECT_FALSE(address1.is_same_host(address2));
+
+  {
+    std::stringstream stream;
+    {
+      boost::archive::portable_binary_oarchive ostream{stream};
+      ostream << address2;
+    }
+    {
+      boost::archive::portable_binary_iarchive istream{stream};
+      istream >> address1;
+    }
+  }
+  CHECK_EQUAL(address1, address2);
+  EXPECT_TRUE(address1.is_same_host(address2));
+  EXPECT_TRUE(address2.is_same_host(address1));
+  EXPECT_NO_THROW(address1.as<epee::net_utils::ipv4_network_address>());
+
+  address1 = custom_address{};
+  CHECK_EQUAL(address1, address1);
+  CHECK_LESS(address2, address1);
+  EXPECT_FALSE(address1.is_same_host(loopback));
+  EXPECT_FALSE(loopback.is_same_host(address1));
+  EXPECT_THROW(address1.as<epee::net_utils::ipv4_network_address>(), std::bad_cast);
+  EXPECT_NO_THROW(address1.as<custom_address>());
+}

tests/unit_tests/test_peerlist.cpp

@@ -38,7 +38,7 @@ TEST(peer_list, peer_list_general)
 {
   nodetool::peerlist_manager plm;
   plm.init(false);
-#define MAKE_IPV4_ADDRESS(a,b,c,d,e) new epee::net_utils::ipv4_network_address(MAKE_IP(a,b,c,d),e)
+#define MAKE_IPV4_ADDRESS(a,b,c,d,e) epee::net_utils::ipv4_network_address{MAKE_IP(a,b,c,d),e}
 #define ADD_GRAY_NODE(addr_, id_, last_seen_) {  nodetool::peerlist_entry ple; ple.last_seen=last_seen_;ple.adr = addr_; ple.id = id_;plm.append_with_peer_gray(ple);}  
 #define ADD_WHITE_NODE(addr_, id_, last_seen_) {  nodetool::peerlist_entry ple;ple.last_seen=last_seen_; ple.adr = addr_; ple.id = id_;plm.append_with_peer_white(ple);}