Method SendNextRequest

libi2pd/NetDbRequests.cpp:256–332

	}

	bool NetDbRequests::SendNextRequest (std::shared_ptr<RequestedDestination> dest)
	{
		if (!dest || !dest->IsActive ()) return false;
		bool ret = true;
		auto count = dest->GetNumAttempts ();
		if (!dest->IsExploratory () && count < MAX_NUM_REQUEST_ATTEMPTS)
		{
			auto nextFloodfill = netdb.GetClosestFloodfill (dest->GetDestination (), dest->GetExcludedPeers ());
			if (nextFloodfill)
			{	
				bool direct = dest->IsDirect ();
				if (direct && !nextFloodfill->IsReachableFrom (i2p::context.GetRouterInfo ()) &&
					!i2p::transport::transports.IsConnected (nextFloodfill->GetIdentHash ()))
					direct = false; // floodfill can't be reached directly
				auto s = shared_from_this ();
				auto onDrop = [s, dest]()
					{
						if (dest->IsActive ())
						{
							boost::asio::post (s->GetIOService (), [s, dest]()
								{
									if (dest->IsActive ()) s->SendNextRequest (dest);
								});
						}	
					};		
				if (direct)
				{
					if (CheckLogLevel (eLogDebug))
						LogPrint (eLogDebug, "NetDbReq: Try ", dest->GetDestination ().ToBase64 (), " at ", count, " floodfill ", nextFloodfill->GetIdentHash ().ToBase64 (), " directly");
					auto msg = dest->CreateRequestMessage (nextFloodfill->GetIdentHash ());
					msg->onDrop = onDrop; 
					i2p::transport::transports.SendMessage (nextFloodfill->GetIdentHash (), msg);
				}	
				else
				{	
					auto pool = i2p::tunnel::tunnels.GetExploratoryPool ();
					if (pool)
					{	
						auto outbound = pool->GetNextOutboundTunnel ();
						auto inbound = pool->GetNextInboundTunnel ();
						if (nextFloodfill && outbound && inbound)
						{
							if (CheckLogLevel (eLogDebug))
								LogPrint (eLogDebug, "NetDbReq: Try ", dest->GetDestination ().ToBase64 (), " at ", count, " floodfill ", nextFloodfill->GetIdentHash ().ToBase64 (), " through tunnels");
							auto msg = dest->CreateRequestMessage (nextFloodfill, inbound); 
							msg->onDrop = onDrop;
							outbound->SendTunnelDataMsgTo (nextFloodfill->GetIdentHash (), 0,
								i2p::garlic::WrapECIESX25519MessageForRouter (msg, nextFloodfill->GetIdentity ()->GetEncryptionPublicKey ()));
						}	
						else
						{
							ret = false;
							if (!inbound) LogPrint (eLogWarning, "NetDbReq: No inbound tunnels");
							if (!outbound) LogPrint (eLogWarning, "NetDbReq: No outbound tunnels");
						}
					}	
					else
					{