lokinet/llarp/link/link_manager.hpp
Jeff a0ed303d7b
try to handle router deregistrations on the network better (#1461)
* don't send messages to de-registered relays but allow traffic to clients

* actively close sessions to de-registered relays
2020-11-10 09:24:58 -05:00

116 lines
2.6 KiB
C++

#ifndef LLARP_LINK_MANAGER_HPP
#define LLARP_LINK_MANAGER_HPP
#include <link/i_link_manager.hpp>
#include <util/compare_ptr.hpp>
#include <link/server.hpp>
#include <unordered_map>
#include <set>
#include <atomic>
namespace llarp
{
struct IRouterContactManager;
struct LinkManager final : public ILinkManager
{
public:
~LinkManager() override = default;
LinkLayer_ptr
GetCompatibleLink(const RouterContact& rc) const override;
IOutboundSessionMaker*
GetSessionMaker() const override;
bool
SendTo(
const RouterID& remote,
const llarp_buffer_t& buf,
ILinkSession::CompletionHandler completed) override;
bool
HasSessionTo(const RouterID& remote) const override;
std::optional<bool>
SessionIsClient(RouterID remote) const override;
void
DeregisterPeer(RouterID remote) override;
void
PumpLinks() override;
void
AddLink(LinkLayer_ptr link, bool inbound = false) override;
bool
StartLinks(Logic_ptr logic) override;
void
Stop() override;
void
PersistSessionUntil(const RouterID& remote, llarp_time_t until) override;
void
ForEachPeer(std::function<void(const ILinkSession*, bool)> visit, bool randomize = false)
const override;
void
ForEachPeer(std::function<void(ILinkSession*)> visit) override;
void
ForEachInboundLink(std::function<void(LinkLayer_ptr)> visit) const override;
size_t
NumberOfConnectedRouters() const override;
size_t
NumberOfConnectedClients() const override;
size_t
NumberOfPendingConnections() const override;
bool
GetRandomConnectedRouter(RouterContact& router) const override;
void
CheckPersistingSessions(llarp_time_t now) override;
void
updatePeerDb(std::shared_ptr<PeerDb> peerDb) override;
util::StatusObject
ExtractStatus() const override;
void
Init(IOutboundSessionMaker* sessionMaker);
private:
LinkLayer_ptr
GetLinkWithSessionTo(const RouterID& remote) const;
std::atomic<bool> stopping;
mutable util::Mutex _mutex; // protects m_PersistingSessions
using LinkSet = std::set<LinkLayer_ptr, ComparePtr<LinkLayer_ptr>>;
LinkSet outboundLinks;
LinkSet inboundLinks;
// sessions to persist -> timestamp to end persist at
std::unordered_map<RouterID, llarp_time_t, RouterID::Hash> m_PersistingSessions
GUARDED_BY(_mutex);
std::unordered_map<RouterID, SessionStats, RouterID::Hash> m_lastRouterStats;
IOutboundSessionMaker* _sessionMaker;
};
} // namespace llarp
#endif // LLARP_LINK_MANAGER_HPP