Added get_connections RPC call to daemon

src/cryptonote_protocol/cryptonote_protocol_defs.h

@@ -14,6 +14,41 @@ namespace cryptonote
 
 #define BC_COMMANDS_POOL_BASE 2000
 
+  /************************************************************************/
+  /* P2P connection info, serializable to json                            */
+  /************************************************************************/
+  struct connection_info
+  {
+    bool incoming;
+
+    std::string ip;
+    std::string port;
+
+    std::string peer_id;
+
+    uint64_t recv_count;
+    time_t recv_idle_time;
+
+    uint64_t send_count;
+    time_t send_idle_time;
+
+    std::string state;
+
+    time_t live_time;
+
+    BEGIN_KV_SERIALIZE_MAP()
+      KV_SERIALIZE(incoming)
+      KV_SERIALIZE(ip)
+      KV_SERIALIZE(port)
+      KV_SERIALIZE(peer_id)
+      KV_SERIALIZE(recv_count)
+      KV_SERIALIZE(recv_idle_time)
+      KV_SERIALIZE(send_count)
+      KV_SERIALIZE(send_idle_time)
+      KV_SERIALIZE(state)
+      KV_SERIALIZE(live_time)
+    END_KV_SERIALIZE_MAP()
+  };
 
   /************************************************************************/
   /*                                                                      */

src/cryptonote_protocol/cryptonote_protocol_handler.h

@@ -5,6 +5,8 @@
 #pragma once
 
 #include <boost/program_options/variables_map.hpp>
+#include <string>
+#include <ctime>
 
 #include "storages/levin_abstract_invoke2.h"
 #include "warnings.h"
@@ -53,6 +55,7 @@ namespace cryptonote
     t_core& get_core(){return m_core;}
     bool is_synchronized(){return m_synchronized;}
     void log_connections();
+    std::list<connection_info> get_connections();
   private:
     //----------------- commands handlers ----------------------------------------------
     int handle_notify_new_block(int command, NOTIFY_NEW_BLOCK::request& arg, cryptonote_connection_context& context);

src/cryptonote_protocol/cryptonote_protocol_handler.inl

@@ -3,6 +3,8 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <boost/interprocess/detail/atomic.hpp>
+#include <list>
+
 #include "cryptonote_core/cryptonote_format_utils.h"
 #include "profile_tools.h"
 namespace cryptonote
@@ -90,6 +92,45 @@ namespace cryptonote
     });
     LOG_PRINT_L0("Connections: " << ENDL << ss.str());
   }
+  //------------------------------------------------------------------------------------------------------------------------   
+  // Returns a list of connection_info objects describing each open p2p connection
+  //------------------------------------------------------------------------------------------------------------------------   
+  template<class t_core>
+  std::list<connection_info> t_cryptonote_protocol_handler<t_core>::get_connections()
+  {
+    std::list<connection_info> connections;
+
+    m_p2p->for_each_connection([&](const connection_context& cntxt, nodetool::peerid_type peer_id)
+    {
+      connection_info cnx;
+      auto timestamp = time(NULL);
+
+      cnx.incoming = cntxt.m_is_income ? true : false;
+
+      cnx.ip = epee::string_tools::get_ip_string_from_int32(cntxt.m_remote_ip);
+      cnx.port = std::to_string(cntxt.m_remote_port);
+
+      std::stringstream peer_id_str;
+      peer_id_str << std::hex << peer_id;
+      peer_id_str >> cnx.peer_id;
+
+      cnx.recv_count = cntxt.m_recv_cnt;
+      cnx.recv_idle_time = timestamp - cntxt.m_last_recv;
+
+      cnx.send_count = cntxt.m_send_cnt;
+      cnx.send_idle_time = timestamp;
+
+      cnx.state = get_protocol_state_string(cntxt.m_state);
+
+      cnx.live_time = timestamp - cntxt.m_started;
+      
+      connections.push_back(cnx);
+
+      return true;
+    });
+
+    return connections;
+  }
   //------------------------------------------------------------------------------------------------------------------------
   template<class t_core> 
   bool t_cryptonote_protocol_handler<t_core>::process_payload_sync_data(const CORE_SYNC_DATA& hshd, cryptonote_connection_context& context, bool is_inital)