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lokinet/llarp/dht/message.hpp

63 lines
1.5 KiB
C++

#pragma once
#include "key.hpp"
#include <llarp/messages/link_message.hpp>
#include <llarp/path/path_types.hpp>
#include <llarp/util/bencode.hpp>
#include <vector>
namespace
{
static auto dht_cat = llarp::log::Cat("lokinet.dht");
} // namespace
namespace llarp::dht
{
constexpr size_t MAX_MSG_SIZE = 2048;
struct AbstractDHTMessageHandler;
struct AbstractDHTMessage : private AbstractSerializable
{
virtual ~AbstractDHTMessage() = default;
/// construct
AbstractDHTMessage(const Key_t& from) : From(from)
{}
virtual bool
handle_message(
AbstractDHTMessageHandler& dht,
std::vector<std::unique_ptr<AbstractDHTMessage>>& replies) const = 0;
void
bt_encode(oxenc::bt_dict_producer& btdp) const override = 0;
virtual bool
decode_key(const llarp_buffer_t& key, llarp_buffer_t* val) = 0;
// methods we do not want to inherit onwards from AbstractSerializable
std::string
bt_encode() const final
{
throw std::runtime_error{"Error: DHT messages should encode directly to a bt dict producer!"};
}
Key_t From;
PathID_t pathID;
uint64_t version = llarp::constants::proto_version;
};
std::unique_ptr<AbstractDHTMessage>
DecodeMessage(const Key_t& from, llarp_buffer_t* buf, bool relayed = false);
bool
DecodeMessageList(
Key_t from,
llarp_buffer_t* buf,
std::vector<std::unique_ptr<AbstractDHTMessage>>& list,
bool relayed = false);
} // namespace llarp::dht