improve transport session logging

libi2pd/NTCP2.cpp

@@ -375,7 +375,16 @@ namespace transport
 			m_Server.RemoveNTCP2Session (shared_from_this ());
 			m_SendQueue.clear ();
 			m_SendQueueSize = 0;
-			LogPrint (eLogDebug, "NTCP2: Session terminated");
+			auto remoteIdentity = GetRemoteIdentity ();
+			if (remoteIdentity)
+			{
+				LogPrint (eLogDebug, "NTCP2: Session with ", GetRemoteEndpoint (),
+					" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ") terminated");
+			}
+			else
+			{
+				LogPrint (eLogDebug, "NTCP2: Session with ", GetRemoteEndpoint (), " terminated");
+			}
 		}
 	}
 
@@ -691,11 +700,13 @@ namespace transport
 					i2p::data::RouterInfo ri (buf.data () + 4, size - 1); // 1 byte block type + 2 bytes size + 1 byte flag
 					if (ri.IsUnreachable ())
 					{
-						LogPrint (eLogError, "NTCP2: Signature verification failed in SessionConfirmed");
+						LogPrint (eLogError, "NTCP2: RouterInfo verification failed in SessionConfirmed from ", GetRemoteEndpoint ());
 						SendTerminationAndTerminate (eNTCP2RouterInfoSignatureVerificationFail);
 						return;
 					}
-					auto ts = i2p::util::GetMillisecondsSinceEpoch (); 
+					LogPrint(eLogDebug, "NTCP2: SessionConfirmed from ", GetRemoteEndpoint (),
+						" (", i2p::data::GetIdentHashAbbreviation (ri.GetIdentHash ()), ")");
+					auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 					if (ts > ri.GetTimestamp () + i2p::data::NETDB_MIN_EXPIRATION_TIMEOUT*1000LL) // 90 minutes
 					{
 						LogPrint (eLogError, "NTCP2: RouterInfo is too old in SessionConfirmed for ", (ts - ri.GetTimestamp ())/1000LL, " seconds");
@@ -1409,7 +1420,8 @@ namespace transport
 			LogPrint (eLogError, "NTCP2: Can't connect to unspecified address");
 			return;
 		}
-		LogPrint (eLogDebug, "NTCP2: Connecting to ", conn->GetRemoteEndpoint ());
+		LogPrint (eLogDebug, "NTCP2: Connecting to ", conn->GetRemoteEndpoint (),
+			" (", i2p::data::GetIdentHashAbbreviation (conn->GetRemoteIdentity ()->GetIdentHash ()), ")");
 		GetService ().post([this, conn]()
 			{
 				if (this->AddNTCP2Session (conn))
@@ -1465,7 +1477,8 @@ namespace transport
 		}
 		else
 		{
-			LogPrint (eLogDebug, "NTCP2: Connected to ", conn->GetRemoteEndpoint ());
+			LogPrint (eLogDebug, "NTCP2: Connected to ", conn->GetRemoteEndpoint (),
+				" (", i2p::data::GetIdentHashAbbreviation (conn->GetRemoteIdentity ()->GetIdentHash ()), ")");
 			conn->ClientLogin ();
 		}
 	}

libi2pd/SSU2Session.cpp

@@ -114,6 +114,8 @@ namespace transport
 	{
 		if (m_State == eSSU2SessionStateUnknown || m_State == eSSU2SessionStateTokenReceived)
 		{
+			LogPrint(eLogDebug, "SSU2: Connecting to ", GetRemoteEndpoint (),
+				" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ")");
 			ScheduleConnectTimer ();
 			auto token = m_Server.FindOutgoingToken (m_RemoteEndpoint);
 			if (token)
@@ -269,7 +271,16 @@ namespace transport
 			m_ReceivedI2NPMsgIDs.clear ();
 			m_Server.RemoveSession (m_SourceConnID);
 			transports.PeerDisconnected (shared_from_this ());
-			LogPrint (eLogDebug, "SSU2: Session terminated");
+			auto remoteIdentity = GetRemoteIdentity ();
+			if (remoteIdentity)
+			{
+				LogPrint (eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (),
+					" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ") terminated");
+			}
+			else
+			{
+				LogPrint (eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (), " terminated");
+			}
 		}
 	}
 
@@ -298,6 +309,8 @@ namespace transport
 			m_OnEstablished ();
 			m_OnEstablished = nullptr;
 		}
+		LogPrint(eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (),
+			" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ") established");
 	}
 
 	void SSU2Session::Done ()