Revert "Merge pull request #7136"

This reverts commit 63c7ca07fba2f063c760f786a986fb3e02fb040e, reversing
changes made to 2218e23e84a89e9a1e4c0be5d50f891ab836754f.

8 files changed, 53 insertions, 34 deletions

diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index a3d695b85..cdad39a2c 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -57,7 +57,6 @@
 #include "common/notify.h"
 #include "common/varint.h"
 #include "common/pruning.h"
-#include "time_helper.h"
 
 #undef MONERO_DEFAULT_LOG_CATEGORY
 #define MONERO_DEFAULT_LOG_CATEGORY "blockchain"
diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler.h b/src/cryptonote_protocol/cryptonote_protocol_handler.h
index 80dd2bc39..28530f3e7 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler.h
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler.h
@@ -46,8 +46,6 @@
 #include "block_queue.h"
 #include "common/perf_timer.h"
 #include "cryptonote_basic/connection_context.h"
-#include "net/levin_base.h"
-#include "p2p/net_node_common.h"
 #include <boost/circular_buffer.hpp>
 
 PUSH_WARNINGS
@@ -197,11 +195,10 @@ namespace cryptonote
       bool post_notify(typename t_parameter::request& arg, cryptonote_connection_context& context)
       {
         LOG_PRINT_L2("[" << epee::net_utils::print_connection_context_short(context) << "] post " << typeid(t_parameter).name() << " -->");
-
-        epee::levin::message_writer out{256 * 1024}; // optimize for block responses
-        epee::serialization::store_t_to_binary(arg, out.buffer);
+        epee::byte_slice blob;
+        epee::serialization::store_t_to_binary(arg, blob, 256 * 1024); // optimize for block responses
         //handler_response_blocks_now(blob.size()); // XXX
-        return m_p2p->invoke_notify_to_peer(t_parameter::ID, std::move(out), context);
+        return m_p2p->invoke_notify_to_peer(t_parameter::ID, epee::to_span(blob), context);
       }
   };
 
diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler.inl b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
index afc81f552..69ef0970b 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler.inl
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
@@ -2713,15 +2713,15 @@ skip:
     // send fluffy ones first, we want to encourage people to run that
     if (!fluffyConnections.empty())
     {
-      epee::levin::message_writer fluffyBlob{32 * 1024};
-      epee::serialization::store_t_to_binary(fluffy_arg, fluffyBlob.buffer);
-      m_p2p->relay_notify_to_list(NOTIFY_NEW_FLUFFY_BLOCK::ID, std::move(fluffyBlob), std::move(fluffyConnections));
+      epee::byte_slice fluffyBlob;
+      epee::serialization::store_t_to_binary(fluffy_arg, fluffyBlob, 32 * 1024);
+      m_p2p->relay_notify_to_list(NOTIFY_NEW_FLUFFY_BLOCK::ID, epee::to_span(fluffyBlob), std::move(fluffyConnections));
     }
     if (!fullConnections.empty())
     {
-      epee::levin::message_writer fullBlob{128 * 1024};
-      epee::serialization::store_t_to_binary(arg, fullBlob.buffer);
-      m_p2p->relay_notify_to_list(NOTIFY_NEW_BLOCK::ID, std::move(fullBlob), std::move(fullConnections));
+      epee::byte_slice fullBlob;
+      epee::serialization::store_t_to_binary(arg, fullBlob, 128 * 1024);
+      m_p2p->relay_notify_to_list(NOTIFY_NEW_BLOCK::ID, epee::to_span(fullBlob), std::move(fullConnections));
     }
 
     return true;
diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler_common.h b/src/cryptonote_protocol/cryptonote_protocol_handler_common.h
index 57b1d049c..79c2edf1d 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler_common.h
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler_common.h
@@ -30,8 +30,8 @@
 
 #pragma once
 
+#include "p2p/net_node_common.h"
 #include "cryptonote_protocol/cryptonote_protocol_defs.h"
-#include "cryptonote_protocol/enums.h"
 #include "cryptonote_basic/connection_context.h"
 namespace cryptonote
 {
diff --git a/src/cryptonote_protocol/levin_notify.cpp b/src/cryptonote_protocol/levin_notify.cpp
index 0b065c3c3..1e9f3e399 100644
--- a/src/cryptonote_protocol/levin_notify.cpp
+++ b/src/cryptonote_protocol/levin_notify.cpp
@@ -159,7 +159,7 @@ namespace levin
       return get_out_connections(p2p, get_blockchain_height(p2p, core));
     }
 
-    epee::levin::message_writer make_tx_message(std::vector<blobdata>&& txs, const bool pad, const bool fluff)
+    epee::byte_slice make_tx_payload(std::vector<blobdata>&& txs, const bool pad, const bool fluff)
     {
       NOTIFY_NEW_TRANSACTIONS::request request{};
       request.txs = std::move(txs);
@@ -193,17 +193,21 @@ namespace levin
         // if the size of _ moved enough, we might lose byte in size encoding, we don't care
       }
 
-      epee::levin::message_writer out;
-      if (!epee::serialization::store_t_to_binary(request, out.buffer))
+      epee::byte_slice fullBlob;
+      if (!epee::serialization::store_t_to_binary(request, fullBlob))
         throw std::runtime_error{"Failed to serialize to epee binary format"};
 
-      return out;
+      return fullBlob;
     }
 
     bool make_payload_send_txs(connections& p2p, std::vector<blobdata>&& txs, const boost::uuids::uuid& destination, const bool pad, const bool fluff)
     {
-      epee::byte_slice blob = make_tx_message(std::move(txs), pad, fluff).finalize_notify(NOTIFY_NEW_TRANSACTIONS::ID);
-      return p2p.send(std::move(blob), destination);
+      const epee::byte_slice blob = make_tx_payload(std::move(txs), pad, fluff);
+      p2p.for_connection(destination, [&blob](detail::p2p_context& context) {
+        on_levin_traffic(context, true, true, false, blob.size(), NOTIFY_NEW_TRANSACTIONS::ID);
+        return true;
+      });
+      return p2p.notify(NOTIFY_NEW_TRANSACTIONS::ID, epee::to_span(blob), destination);
     }
 
     /* The current design uses `asio::strand`s. The documentation isn't as clear
@@ -649,6 +653,10 @@ namespace levin
           else
             message = zone_->noise.clone();
 
+          zone_->p2p->for_connection(channel.connection, [&](detail::p2p_context& context) {
+            on_levin_traffic(context, true, true, false, message.size(), "noise");
+            return true;
+          });
           if (zone_->p2p->send(std::move(message), channel.connection))
           {
             if (!channel.queue.empty() && channel.active.empty())
@@ -808,8 +816,9 @@ namespace levin
 
       // Padding is not useful when using noise mode. Send as stem so receiver
       // forwards in Dandelion++ mode.
+      const epee::byte_slice payload = make_tx_payload(std::move(txs), false, false);
       epee::byte_slice message = epee::levin::make_fragmented_notify(
-        zone_->noise.size(), NOTIFY_NEW_TRANSACTIONS::ID, make_tx_message(std::move(txs), false, false)
+        zone_->noise, NOTIFY_NEW_TRANSACTIONS::ID, epee::to_span(payload)
       );
       if (CRYPTONOTE_MAX_FRAGMENTS * zone_->noise.size() < message.size())
       {
diff --git a/src/p2p/net_node.h b/src/p2p/net_node.h
index f2888674b..db931122e 100644
--- a/src/p2p/net_node.h
+++ b/src/p2p/net_node.h
@@ -344,9 +344,10 @@ namespace nodetool
     virtual void on_connection_close(p2p_connection_context& context);
     virtual void callback(p2p_connection_context& context);
     //----------------- i_p2p_endpoint -------------------------------------------------------------
-    virtual bool relay_notify_to_list(int command, epee::levin::message_writer message, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections) final;
+    virtual bool relay_notify_to_list(int command, const epee::span<const uint8_t> data_buff, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections);
     virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::relay_method tx_relay);
-    virtual bool invoke_notify_to_peer(int command, epee::levin::message_writer message, const epee::net_utils::connection_context_base& context) final;
+    virtual bool invoke_command_to_peer(int command, const epee::span<const uint8_t> req_buff, std::string& resp_buff, const epee::net_utils::connection_context_base& context);
+    virtual bool invoke_notify_to_peer(int command, const epee::span<const uint8_t> req_buff, const epee::net_utils::connection_context_base& context);
     virtual bool drop_connection(const epee::net_utils::connection_context_base& context);
     virtual void request_callback(const epee::net_utils::connection_context_base& context);
     virtual void for_each_connection(std::function<bool(typename t_payload_net_handler::connection_context&, peerid_type, uint32_t)> f);
diff --git a/src/p2p/net_node.inl b/src/p2p/net_node.inl
index e1d6d1e10..ea69760c7 100644
--- a/src/p2p/net_node.inl
+++ b/src/p2p/net_node.inl
@@ -2175,9 +2175,8 @@ namespace nodetool
   }
   //-----------------------------------------------------------------------------------
   template<class t_payload_net_handler>
-  bool node_server<t_payload_net_handler>::relay_notify_to_list(int command, epee::levin::message_writer data_buff, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections)
+  bool node_server<t_payload_net_handler>::relay_notify_to_list(int command, const epee::span<const uint8_t> data_buff, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections)
   {
-    epee::byte_slice message = data_buff.finalize_notify(command);
     std::sort(connections.begin(), connections.end());
     auto zone = m_network_zones.begin();
     for(const auto& c_id: connections)
@@ -2195,7 +2194,7 @@ namespace nodetool
         ++zone;
       }
       if (zone->first == c_id.first)
-        zone->second.m_net_server.get_config_object().send(message.clone(), c_id.second);
+        zone->second.m_net_server.get_config_object().notify(command, data_buff, c_id.second);
     }
     return true;
   }
@@ -2262,13 +2261,24 @@ namespace nodetool
   }
   //-----------------------------------------------------------------------------------
   template<class t_payload_net_handler>
-  bool node_server<t_payload_net_handler>::invoke_notify_to_peer(const int command, epee::levin::message_writer message, const epee::net_utils::connection_context_base& context)
+  bool node_server<t_payload_net_handler>::invoke_notify_to_peer(int command, const epee::span<const uint8_t> req_buff, const epee::net_utils::connection_context_base& context)
   {
     if(is_filtered_command(context.m_remote_address, command))
       return false;
 
     network_zone& zone = m_network_zones.at(context.m_remote_address.get_zone());
-    int res = zone.m_net_server.get_config_object().send(message.finalize_notify(command), context.m_connection_id);
+    int res = zone.m_net_server.get_config_object().notify(command, req_buff, context.m_connection_id);
+    return res > 0;
+  }
+  //-----------------------------------------------------------------------------------
+  template<class t_payload_net_handler>
+  bool node_server<t_payload_net_handler>::invoke_command_to_peer(int command, const epee::span<const uint8_t> req_buff, std::string& resp_buff, const epee::net_utils::connection_context_base& context)
+  {
+    if(is_filtered_command(context.m_remote_address, command))
+      return false;
+
+    network_zone& zone = m_network_zones.at(context.m_remote_address.get_zone());
+    int res = zone.m_net_server.get_config_object().invoke(command, req_buff, resp_buff, context.m_connection_id);
     return res > 0;
   }
   //-----------------------------------------------------------------------------------
diff --git a/src/p2p/net_node_common.h b/src/p2p/net_node_common.h
index 92b7596ae..0da758ad4 100644
--- a/src/p2p/net_node_common.h
+++ b/src/p2p/net_node_common.h
@@ -40,8 +40,6 @@
 #include "net/net_utils_base.h"
 #include "p2p_protocol_defs.h"
 
-namespace epee { namespace levin { class message_writer; } }
-
 namespace nodetool
 {
 
@@ -51,9 +49,10 @@ namespace nodetool
   template<class t_connection_context>
   struct i_p2p_endpoint
   {
-    virtual bool relay_notify_to_list(int command, epee::levin::message_writer message, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections)=0;
+    virtual bool relay_notify_to_list(int command, const epee::span<const uint8_t> data_buff, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections)=0;
     virtual epee::net_utils::zone send_txs(std::vector<cryptonote::blobdata> txs, const epee::net_utils::zone origin, const boost::uuids::uuid& source, cryptonote::relay_method tx_relay)=0;
-    virtual bool invoke_notify_to_peer(int command, epee::levin::message_writer message, const epee::net_utils::connection_context_base& context)=0;
+    virtual bool invoke_command_to_peer(int command, const epee::span<const uint8_t> req_buff, std::string& resp_buff, const epee::net_utils::connection_context_base& context)=0;
+    virtual bool invoke_notify_to_peer(int command, const epee::span<const uint8_t> req_buff, const epee::net_utils::connection_context_base& context)=0;
     virtual bool drop_connection(const epee::net_utils::connection_context_base& context)=0;
     virtual void request_callback(const epee::net_utils::connection_context_base& context)=0;
     virtual uint64_t get_public_connections_count()=0;
@@ -72,7 +71,7 @@ namespace nodetool
   template<class t_connection_context>
   struct p2p_endpoint_stub: public i_p2p_endpoint<t_connection_context>
   {
-    virtual bool relay_notify_to_list(int command, epee::levin::message_writer message, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections)
+    virtual bool relay_notify_to_list(int command, const epee::span<const uint8_t> data_buff, std::vector<std::pair<epee::net_utils::zone, boost::uuids::uuid>> connections)
     {
       return false;
     }
@@ -80,7 +79,11 @@ namespace nodetool
     {
       return epee::net_utils::zone::invalid;
     }
-    virtual bool invoke_notify_to_peer(int command, epee::levin::message_writer message, const epee::net_utils::connection_context_base& context)
+    virtual bool invoke_command_to_peer(int command, const epee::span<const uint8_t> req_buff, std::string& resp_buff, const epee::net_utils::connection_context_base& context)
+    {
+      return false;
+    }
+    virtual bool invoke_notify_to_peer(int command, const epee::span<const uint8_t> req_buff, const epee::net_utils::connection_context_base& context)
     {
       return true;
     }