eliminate extra copy of vector of SSU2 packets

libi2pd/SSU2.cpp

@@ -391,7 +391,10 @@ namespace transport
 						break;
 					}
 				}
-				GetService ().post (std::bind (&SSU2Server::HandleReceivedPackets, this, packets));
+				GetService ().post ([packets = std::move (packets), this]() mutable
+					{
+						HandleReceivedPackets (std::move (packets));
+					});
 			}
 			else
 				GetService ().post (std::bind (&SSU2Server::HandleReceivedPacket, this, packet));
@@ -435,7 +438,7 @@ namespace transport
 		}
 	}
 
-	void SSU2Server::HandleReceivedPackets (std::vector<Packet *> packets)
+	void SSU2Server::HandleReceivedPackets (std::vector<Packet *>&& packets)
 	{
 		if (m_IsThroughProxy)
 			for (auto& packet: packets)
@@ -443,7 +446,7 @@ namespace transport
 		else
 			for (auto& packet: packets)
 				ProcessNextPacket (packet->buf, packet->len, packet->from);
-		m_PacketsPool.ReleaseMt (packets);
+		m_PacketsPool.ReleaseMt (std::move (packets));
 		if (m_LastSession && m_LastSession->GetState () != eSSU2SessionStateTerminated)
 			m_LastSession->FlushData ();
 	}

libi2pd/SSU2.h

@@ -126,7 +126,7 @@ namespace transport
 			void HandleReceivedFrom (const boost::system::error_code& ecode, size_t bytes_transferred,
 				Packet * packet, boost::asio::ip::udp::socket& socket);
 			void HandleReceivedPacket (Packet * packet);
-			void HandleReceivedPackets (std::vector<Packet *> packets);
+			void HandleReceivedPackets (std::vector<Packet *>&& packets);
 			void ProcessNextPacket (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
 
 			void ScheduleTermination ();

libi2pd/util.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -132,7 +132,7 @@ namespace util
 			}
 
 			template<template<typename, typename...>class C, typename... R>
-			void ReleaseMt(const C<T *, R...>& c)
+			void ReleaseMt(C<T *, R...>&& c)
 			{
 				std::lock_guard<std::mutex> l(m_Mutex);
 				for (auto& it: c)