removed C++17 check

Win32/Win32App.cpp

@@ -355,9 +355,7 @@ namespace win32
 						}
 					}
 				}
-#if (__cplusplus >= 201703L) // C++ 17 or higher
-				[[fallthrough]];
-#endif
+				[fallthrough]];
 			}
 			case WM_TRAYICON:
 			{

libi2pd/ECIESX25519AEADRatchetSession.cpp

@@ -801,9 +801,7 @@ namespace garlic
 				m_State = eSessionStateEstablished;
 				m_NSRSendTagset = nullptr;
 				m_EphemeralKeys = nullptr;
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 				[[fallthrough]];
-#endif
 			case eSessionStateEstablished:
 				if (m_SendReverseKey && receiveTagset->GetTagSetID () == m_NextReceiveRatchet->GetReceiveTagSetID ())
 					m_SendReverseKey = false; // tag received on new tagset	

libi2pd/FS.h

@@ -16,8 +16,7 @@
 #include <functional>
 
 #ifndef STD_FILESYSTEM
-#	if (!TARGET_OS_SIMULATOR && \
-	(__cplusplus >= 201703L) && __has_include(<filesystem>)) // C++ 17 or higher and supports std::filesystem
+#	if (!TARGET_OS_SIMULATOR && __has_include(<filesystem>)) // supports std::filesystem
 #		define STD_FILESYSTEM 1
 #	else
 #		define STD_FILESYSTEM 0

libi2pd/Garlic.cpp

@@ -1031,9 +1031,7 @@ namespace garlic
 			case eGarlicDeliveryTypeDestination:
 				LogPrint (eLogDebug, "Garlic: Type destination");
 				buf += 32; // TODO: check destination
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 				[[fallthrough]];
-#endif
 				// no break here
 			case eGarlicDeliveryTypeLocal:
 			{

libi2pd/Log.h

@@ -172,16 +172,6 @@ void LogPrint (std::stringstream& s, TValue&& arg) noexcept
 	s << std::forward<TValue>(arg);
 }
 
-#if (__cplusplus < 201703L) // below C++ 17
-/** internal usage only -- folding args array to single string */
-template<typename TValue, typename... TArgs>
-void LogPrint (std::stringstream& s, TValue&& arg, TArgs&&... args) noexcept
-{
-	LogPrint (s, std::forward<TValue>(arg));
-	LogPrint (s, std::forward<TArgs>(args)...);
-}
-#endif
-
 /**
  * @brief Create log message and send it to queue
  * @param level Message level (eLogError, eLogInfo, ...)
@@ -194,13 +184,7 @@ void LogPrint (LogLevel level, TArgs&&... args) noexcept
 
 	// fold message to single string
 	std::stringstream ss;
-
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 	(LogPrint (ss, std::forward<TArgs>(args)), ...);
-#else
-	LogPrint (ss, std::forward<TArgs>(args)...);
-#endif
-
 	auto msg = std::make_shared<i2p::log::LogMsg>(level, std::time(nullptr), std::move(ss).str());
 	msg->tid = std::this_thread::get_id();
 	i2p::log::Logger().Append(msg);
@@ -217,11 +201,7 @@ void ThrowFatal (TArgs&&... args) noexcept
 	if (!f) return;
 	// fold message to single string
 	std::stringstream ss("");
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 	(LogPrint (ss, std::forward<TArgs>(args)), ...);
-#else
-	LogPrint (ss, std::forward<TArgs>(args)...);
-#endif
 	f (ss.str ());
 }
 

libi2pd/NetDb.cpp

@@ -1314,12 +1314,8 @@ namespace data
 		{
 			// update selection
 			m_ExploratorySelection.clear ();
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 			std::vector<std::shared_ptr<const RouterInfo> > eligible;
-			eligible.reserve (m_RouterInfos.size ());
-#else		
-			auto& eligible = m_ExploratorySelection;
-#endif			
+			eligible.reserve (m_RouterInfos.size ());		
 			{
 				// collect eligible from current netdb
 				bool checkIsReal = i2p::tunnel::tunnels.GetPreciseTunnelCreationSuccessRate () < NETDB_TUNNEL_CREATION_RATE_THRESHOLD; // too low rate
@@ -1329,22 +1325,13 @@ namespace data
 					 	(!checkIsReal || (it.second->HasProfile () && it.second->GetProfile ()->IsReal ())))
 							eligible.push_back (it.second);
 			}
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 			if (eligible.size () > NETDB_MAX_EXPLORATORY_SELECTION_SIZE)
 			{
 				 std::sample (eligible.begin(), eligible.end(), std::back_inserter(m_ExploratorySelection),
 				 	NETDB_MAX_EXPLORATORY_SELECTION_SIZE, std::mt19937(ts));
 			}	
 			else
-				std::swap (m_ExploratorySelection, eligible);
-#else			
-			if (m_ExploratorySelection.size () > NETDB_MAX_EXPLORATORY_SELECTION_SIZE)
-			{
-				// reduce number of eligible to max selection size
-				std::shuffle (m_ExploratorySelection.begin(), m_ExploratorySelection.end(), std::mt19937(ts));
-				m_ExploratorySelection.resize (NETDB_MAX_EXPLORATORY_SELECTION_SIZE);
-			}	
-#endif			
+				std::swap (m_ExploratorySelection, eligible);	
 			m_LastExploratorySelectionUpdateTime = ts;
 		}	
 		

libi2pd/RouterContext.cpp

@@ -626,9 +626,7 @@ namespace i2p
 			case low   : /* not set */; break;
 			case extra : caps |= i2p::data::RouterInfo::eExtraBandwidth; break; // 'P'
 			case unlim : caps |= i2p::data::RouterInfo::eExtraBandwidth;
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 			[[fallthrough]];
-#endif
 			// no break here, extra + high means 'X'
 			case high : caps |= i2p::data::RouterInfo::eHighBandwidth; break;
 		}

libi2pd/SSU2Session.cpp

@@ -587,11 +587,7 @@ namespace transport
 		if (!resentPackets.empty ())
 		{
 			m_LastResendTime = ts;
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 			m_SentPackets.merge (resentPackets);
-#else
-			m_SentPackets.insert (resentPackets.begin (), resentPackets.end ());
-#endif
 			m_WindowSize >>= 1; // /2
 			if (m_WindowSize < SSU2_MIN_WINDOW_SIZE) m_WindowSize = SSU2_MIN_WINDOW_SIZE;
 			return resentPackets.size ();

libi2pd_client/SOCKS.cpp

@@ -444,9 +444,7 @@ namespace proxy
 						break;
 						case CMD_UDP:
 							if (m_socksv == SOCKS5) break;
-#if (__cplusplus >= 201703L) // C++ 17 or higher
 							[[fallthrough]];
-#endif
 						default:
 							LogPrint(eLogError, "SOCKS: Invalid command: ", ((int)*sock_buff));
 							SocksRequestFailed(SOCKS5_GEN_FAIL);