lokinet/llarp/router/outbound_session_maker.hpp
Thomas Winget ab86318404 Partial implementation of libquic as wire protocol
TODO:

- set up all the callbacks for libquic

- define control message requests, responses, commands

- plug new control messages into lokinet (path creation, network state, etc)

- plug connection state changes (established, failed, closed, etc.) into lokinet

- lots of cleanup and miscellanea
2023-08-28 11:06:10 -04:00

113 lines
2.7 KiB
C++

#pragma once
#include "i_outbound_session_maker.hpp"
#include "i_rc_lookup_handler.hpp"
#include <llarp/util/thread/threading.hpp>
#include <llarp/profiling.hpp>
#include <unordered_map>
#include <list>
#include <memory>
namespace llarp
{
struct PendingSession;
struct LinkManager;
struct I_RCLookupHandler;
struct OutboundSessionMaker final : public IOutboundSessionMaker
{
using Work_t = std::function<void(void)>;
using WorkerFunc_t = std::function<void(Work_t)>;
using CallbacksQueue = std::list<RouterCallback>;
public:
~OutboundSessionMaker() override = default;
bool
OnSessionEstablished(ILinkSession* session) override;
void
OnConnectTimeout(ILinkSession* session) override;
void
CreateSessionTo(const RouterID& router, RouterCallback on_result) override EXCLUDES(_mutex);
void
CreateSessionTo(const RouterContact& rc, RouterCallback on_result) override EXCLUDES(_mutex);
bool
HavePendingSessionTo(const RouterID& router) const override EXCLUDES(_mutex);
void
ConnectToRandomRouters(int numDesired) override;
util::StatusObject
ExtractStatus() const override;
bool
ShouldConnectTo(const RouterID& router) const override EXCLUDES(_mutex);
void
Init(
AbstractRouter* router,
ILinkManager* linkManager,
I_RCLookupHandler* rcLookup,
Profiling* profiler,
EventLoop_ptr loop,
WorkerFunc_t work);
void
SetOurRouter(RouterID r)
{
us = std::move(r);
}
/// always maintain this many connections to other routers
size_t minConnectedRouters = 4;
/// hard upperbound limit on the number of router to router connections
size_t maxConnectedRouters = 6;
private:
void
GotRouterContact(const RouterID& router, const RouterContact& rc) EXCLUDES(_mutex);
void
InvalidRouter(const RouterID& router);
void
RouterNotFound(const RouterID& router);
void
OnRouterContactResult(
const RouterID& router, const RouterContact* const rc, const RCRequestResult result);
void
VerifyRC(const RouterContact rc);
void
CreatePendingSession(const RouterID& router) EXCLUDES(_mutex);
void
FinalizeRequest(const RouterID& router, const SessionResult type) EXCLUDES(_mutex);
mutable util::Mutex _mutex; // protects pendingCallbacks
std::unordered_map<RouterID, CallbacksQueue> pendingCallbacks GUARDED_BY(_mutex);
AbstractRouter* _router = nullptr;
LinkManager* _linkManager = nullptr;
I_RCLookupHandler* _rcLookup = nullptr;
Profiling* _profiler = nullptr;
std::shared_ptr<NodeDB> _nodedb;
EventLoop_ptr _loop;
WorkerFunc_t work;
RouterID us;
};
} // namespace llarp