show itag for SSU2 sessions

daemon/HTTPServer.cpp

@@ -791,6 +791,8 @@ namespace http {
 					<< it.second->GetRemoteEndpoint ().address ().to_string ();
 				if (!it.second->IsOutgoing ()) tmp_s << " &#8658; ";
 				tmp_s << " [" << it.second->GetNumSentBytes () << ":" << it.second->GetNumReceivedBytes () << "]";
+				if (it.second->GetRelayTag ())
+					tmp_s << " [itag:" << it.second->GetRelayTag () << "]";
 				tmp_s << "</div>\r\n" << std::endl;
 				cnt++;
 			}
@@ -802,6 +804,8 @@ namespace http {
 					<< "[" << it.second->GetRemoteEndpoint ().address ().to_string () << "]";
 				if (!it.second->IsOutgoing ()) tmp_s6 << " &#8658; ";
 				tmp_s6 << " [" << it.second->GetNumSentBytes () << ":" << it.second->GetNumReceivedBytes () << "]";
+				if (it.second->GetRelayTag ())
+					tmp_s6 << " [itag:" << it.second->GetRelayTag () << "]";
 				tmp_s6 << "</div>\r\n" << std::endl;
 				cnt6++;
 			}

libi2pd/SSU2Session.h

@@ -176,6 +176,7 @@ namespace transport
 			void Done () override;
 			void SendLocalRouterInfo (bool update) override;
 			void SendI2NPMessages (const std::vector<std::shared_ptr<I2NPMessage> >& msgs) override;
+			uint32_t GetRelayTag () const override { return m_RelayTag; };
 			void Resend (uint64_t ts);
 			bool IsEstablished () const { return m_State == eSSU2SessionStateEstablished; };
 			uint64_t GetConnID () const { return m_SourceConnID; };

libi2pd/TransportSession.h

@@ -96,6 +96,7 @@ namespace transport
 			bool IsTerminationTimeoutExpired (uint64_t ts) const
 			{ return ts >= m_LastActivityTimestamp + GetTerminationTimeout (); };
 
+			virtual uint32_t GetRelayTag () const { return 0; };
 			virtual void SendLocalRouterInfo (bool update = false) { SendI2NPMessages ({ CreateDatabaseStoreMsg () }); };
 			virtual void SendI2NPMessages (const std::vector<std::shared_ptr<I2NPMessage> >& msgs) = 0;