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#pragma once
#include <erebos/network.h>
#include "channel.h"
#include "network/protocol.h"
#include <condition_variable>
#include <mutex>
#include <shared_mutex>
#include <thread>
#include <vector>
#include <netinet/in.h>
using std::condition_variable;
using std::monostate;
using std::mutex;
using std::optional;
using std::shared_lock;
using std::shared_mutex;
using std::shared_ptr;
using std::string;
using std::thread;
using std::unique_ptr;
using std::variant;
using std::vector;
using std::tuple;
using std::weak_ptr;
using std::enable_shared_from_this;
namespace chrono = std::chrono;
using chrono::steady_clock;
namespace erebos {
class ReplyBuilder;
struct WaitingRef;
struct Server::Peer
{
Peer(const Peer &) = delete;
Peer & operator=(const Peer &) = delete;
Priv & server;
NetworkProtocol::Connection connection;
variant<monostate,
shared_ptr<struct WaitingRef>,
Identity> identity;
vector<shared_ptr<WaitingRef>> identityUpdates;
variant<monostate,
Stored<ChannelRequest>,
shared_ptr<struct WaitingRef>,
Stored<ChannelAccept>,
unique_ptr<Channel>> channel;
Storage tempStorage;
PartialStorage partStorage;
vector<tuple<UUID, shared_ptr<WaitingRef>>> serviceQueue {};
vector<vector<uint8_t>> secureOutQueue {};
shared_ptr<erebos::Peer::Priv> lpeer = nullptr;
void send(const NetworkProtocol::Header &, const vector<Object> &, bool secure);
void updateIdentity(ReplyBuilder &);
void updateChannel(ReplyBuilder &);
void finalizeChannel(ReplyBuilder &, unique_ptr<Channel>);
void updateService(ReplyBuilder &);
void trySendOutQueue();
};
struct Peer::Priv : enable_shared_from_this<Peer::Priv>
{
weak_ptr<Server::Peer> speer;
weak_ptr<PeerList::Priv> list;
size_t listIndex;
void notifyWatchers();
};
struct PeerList::Priv : enable_shared_from_this<PeerList::Priv>
{
mutex dataMutex;
vector<shared_ptr<Peer::Priv>> peers;
vector<function<void(size_t, const Peer *)>> watchers;
void push(const shared_ptr<Server::Peer> &);
};
class ReplyBuilder
{
public:
void header(NetworkProtocol::Header::Item &&);
void body(const Ref &);
const vector<NetworkProtocol::Header::Item> & header() const { return mheader; }
vector<Object> body() const;
private:
vector<NetworkProtocol::Header::Item> mheader;
vector<Ref> mbody;
};
struct WaitingRef
{
const Storage storage;
const PartialRef ref;
const Server::Peer & peer;
vector<Digest> missing;
optional<Ref> check();
optional<Ref> check(ReplyBuilder &);
};
struct Server::Priv
{
Priv(const Head<LocalState> & local, const Identity & self);
~Priv();
shared_ptr<Priv> getptr();
void doListen();
void doAnnounce();
bool isSelfAddress(const sockaddr_in6 & paddr);
Peer * findPeer(NetworkProtocol::Connection::Id cid) const;
Peer & getPeer(const sockaddr_in6 & paddr);
Peer & addPeer(NetworkProtocol::Connection conn);
void handlePacket(Peer &, const NetworkProtocol::Header &, ReplyBuilder &);
void handleLocalHeadChange(const Head<LocalState> &);
constexpr static uint16_t discoveryPort { 29665 };
constexpr static chrono::seconds announceInterval { 60 };
mutable mutex dataMutex;
condition_variable announceCondvar;
bool finish = false;
shared_mutex selfMutex;
Identity self;
const Bhv<LocalState> localState;
thread threadListen;
thread threadAnnounce;
vector<shared_ptr<Peer>> peers;
PeerList plist;
vector<struct NetworkProtocol::Header> outgoing;
vector<weak_ptr<WaitingRef>> waiting;
NetworkProtocol protocol;
vector<in_addr> localAddresses;
vector<in_addr> bcastAddresses;
// Stop watching before destroying other data
WatchedHead<LocalState> localHead;
// Start destruction with finalizing services
vector<unique_ptr<Service>> services;
};
}
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