Function CreateRouterInfoDatabaseLookupMsg

libi2pd/I2NPProtocol.cpp:144–187

	}

	std::shared_ptr<I2NPMessage> CreateRouterInfoDatabaseLookupMsg (const uint8_t * key, const uint8_t * from,
		uint32_t replyTunnelID, bool exploratory, std::unordered_set<i2p::data::IdentHash> * excludedPeers)
	{
		int cnt = excludedPeers ? excludedPeers->size () : 0;
		auto m = cnt > 7 ? NewI2NPMessage () : NewI2NPShortMessage ();
		uint8_t * buf = m->GetPayload ();
		memcpy (buf, key, 32); // key
		buf += 32;
		memcpy (buf, from, 32); // from
		buf += 32;
		uint8_t flag = exploratory ? DATABASE_LOOKUP_TYPE_EXPLORATORY_LOOKUP : DATABASE_LOOKUP_TYPE_ROUTERINFO_LOOKUP;
		if (replyTunnelID)
		{
			*buf = flag | DATABASE_LOOKUP_DELIVERY_FLAG; // set delivery flag
			htobe32buf (buf+1, replyTunnelID);
			buf += 5;
		}
		else
		{
			*buf = flag; // flag
			buf++;
		}

		if (excludedPeers)
		{
			htobe16buf (buf, cnt);
			buf += 2;
			for (auto& it: *excludedPeers)
			{
				memcpy (buf, it, 32);
				buf += 32;
			}
		}
		else
		{
			// nothing to exclude
			htobuf16 (buf, 0);
			buf += 2;
		}

		m->len += (buf - m->GetPayload ());
		m->FillI2NPMessageHeader (eI2NPDatabaseLookup);
		return m;
	}

	std::shared_ptr<I2NPMessage> CreateLeaseSetDatabaseLookupMsg (const i2p::data::IdentHash& dest,
		const std::unordered_set<i2p::data::IdentHash>& excludedFloodfills,