I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#ifndef TUNNEL_POOL__
#define TUNNEL_POOL__
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#include <inttypes.h>
#include <set>
#include <vector>
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#include <utility>
#include <mutex>
#include "Identity.h"
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#include "LeaseSet.h"
#include "RouterInfo.h"
#include "I2NPProtocol.h"
#include "TunnelBase.h"
#include "RouterContext.h"
#include "Garlic.h"
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namespace i2p
{
namespace tunnel
{
class Tunnel;
class InboundTunnel;
class OutboundTunnel;
class TunnelPool // per local destination
{
public:
TunnelPool (i2p::garlic::GarlicDestination& localDestination, int numInboundHops, int numOutboundHops, int numTunnels = 5);
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~TunnelPool ();
const uint8_t * GetEncryptionPrivateKey () const { return m_LocalDestination.GetEncryptionPrivateKey (); };
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const uint8_t * GetEncryptionPublicKey () const { return m_LocalDestination.GetEncryptionPublicKey (); };
i2p::garlic::GarlicDestination& GetLocalDestination () const { return m_LocalDestination; };
bool IsExploratory () const { return GetIdentHash () == i2p::context.GetIdentHash (); };
void CreateTunnels ();
void TunnelCreated (InboundTunnel * createdTunnel);
void TunnelExpired (InboundTunnel * expiredTunnel);
void TunnelCreated (OutboundTunnel * createdTunnel);
void TunnelExpired (OutboundTunnel * expiredTunnel);
std::vector<InboundTunnel *> GetInboundTunnels (int num) const;
OutboundTunnel * GetNextOutboundTunnel (OutboundTunnel * suggested = nullptr) const;
InboundTunnel * GetNextInboundTunnel (InboundTunnel * suggested = nullptr) const;
const i2p::data::IdentHash& GetIdentHash () const { return m_LocalDestination.GetIdentHash (); };
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void TestTunnels ();
void ProcessDeliveryStatus (I2NPMessage * msg);
bool IsActive () const { return m_IsActive; };
void SetActive (bool isActive) { m_IsActive = isActive; };
void DetachTunnels ();
private:
void CreateInboundTunnel ();
void CreateOutboundTunnel ();
void RecreateInboundTunnel (InboundTunnel * tunnel);
void RecreateOutboundTunnel (OutboundTunnel * tunnel);
template<class TTunnels>
typename TTunnels::value_type GetNextTunnel (TTunnels& tunnels,
typename TTunnels::value_type suggested = nullptr) const;
std::shared_ptr<const i2p::data::RouterInfo> SelectNextHop (std::shared_ptr<const i2p::data::RouterInfo> prevHop) const;
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private:
i2p::garlic::GarlicDestination& m_LocalDestination;
int m_NumInboundHops, m_NumOutboundHops, m_NumTunnels;
mutable std::mutex m_InboundTunnelsMutex;
std::set<InboundTunnel *, TunnelCreationTimeCmp> m_InboundTunnels; // recent tunnel appears first
mutable std::mutex m_OutboundTunnelsMutex;
std::set<OutboundTunnel *, TunnelCreationTimeCmp> m_OutboundTunnels;
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std::map<uint32_t, std::pair<OutboundTunnel *, InboundTunnel *> > m_Tests;
bool m_IsActive;
public:
// for HTTP only
const decltype(m_OutboundTunnels)& GetOutboundTunnels () const { return m_OutboundTunnels; };
const decltype(m_InboundTunnels)& GetInboundTunnels () const { return m_InboundTunnels; };
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};
}
}
#endif