mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-10-31 09:20:38 +00:00
123 lines
4.8 KiB
C++
123 lines
4.8 KiB
C++
/*
|
|
* Copyright (c) 2022, The PurpleI2P Project
|
|
*
|
|
* This file is part of Purple i2pd project and licensed under BSD3
|
|
*
|
|
* See full license text in LICENSE file at top of project tree
|
|
*/
|
|
|
|
#ifndef SSU2_H__
|
|
#define SSU2_H__
|
|
|
|
#include <unordered_map>
|
|
#include "util.h"
|
|
#include "SSU2Session.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace transport
|
|
{
|
|
const int SSU2_TERMINATION_CHECK_TIMEOUT = 30; // 30 seconds
|
|
const size_t SSU2_SOCKET_RECEIVE_BUFFER_SIZE = 0x1FFFF; // 128K
|
|
const size_t SSU2_SOCKET_SEND_BUFFER_SIZE = 0x1FFFF; // 128K
|
|
|
|
class SSU2Server: private i2p::util::RunnableServiceWithWork
|
|
{
|
|
struct Packet
|
|
{
|
|
uint8_t buf[SSU2_MTU];
|
|
size_t len;
|
|
boost::asio::ip::udp::endpoint from;
|
|
};
|
|
|
|
class ReceiveService: public i2p::util::RunnableService
|
|
{
|
|
public:
|
|
|
|
ReceiveService (const std::string& name): RunnableService (name) {};
|
|
boost::asio::io_service& GetService () { return GetIOService (); };
|
|
void Start () { StartIOService (); };
|
|
void Stop () { StopIOService (); };
|
|
};
|
|
|
|
public:
|
|
|
|
SSU2Server ();
|
|
~SSU2Server () {};
|
|
|
|
void Start ();
|
|
void Stop ();
|
|
boost::asio::io_service& GetService () { return GetIOService (); };
|
|
void SetLocalAddress (const boost::asio::ip::address& localAddress);
|
|
bool IsSupported (const boost::asio::ip::address& addr) const;
|
|
|
|
void AddSession (std::shared_ptr<SSU2Session> session);
|
|
void RemoveSession (uint64_t connID);
|
|
void AddSessionByRouterHash (std::shared_ptr<SSU2Session> session);
|
|
bool AddPendingOutgoingSession (std::shared_ptr<SSU2Session> session);
|
|
void RemovePendingOutgoingSession (const boost::asio::ip::udp::endpoint& ep);
|
|
std::shared_ptr<SSU2Session> FindSession (const i2p::data::IdentHash& ident) const;
|
|
std::shared_ptr<SSU2Session> FindPendingOutgoingSession (const boost::asio::ip::udp::endpoint& ep) const;
|
|
std::shared_ptr<SSU2Session> GetRandomSession (i2p::data::RouterInfo::CompatibleTransports remoteTransports) const;
|
|
|
|
void AddRelay (uint32_t tag, std::shared_ptr<SSU2Session> relay);
|
|
void RemoveRelay (uint32_t tag);
|
|
std::shared_ptr<SSU2Session> FindRelaySession (uint32_t tag);
|
|
|
|
void Send (const uint8_t * header, size_t headerLen, const uint8_t * payload, size_t payloadLen,
|
|
const boost::asio::ip::udp::endpoint& to);
|
|
void Send (const uint8_t * header, size_t headerLen, const uint8_t * headerX, size_t headerXLen,
|
|
const uint8_t * payload, size_t payloadLen, const boost::asio::ip::udp::endpoint& to);
|
|
|
|
bool CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router,
|
|
std::shared_ptr<const i2p::data::RouterInfo::Address> address, bool peerTest = false);
|
|
bool StartPeerTest (std::shared_ptr<const i2p::data::RouterInfo> router, bool v4);
|
|
|
|
void UpdateOutgoingToken (const boost::asio::ip::udp::endpoint& ep, uint64_t token, uint32_t exp);
|
|
uint64_t FindOutgoingToken (const boost::asio::ip::udp::endpoint& ep) const;
|
|
uint64_t GetIncomingToken (const boost::asio::ip::udp::endpoint& ep);
|
|
std::pair<uint64_t, uint32_t> NewIncomingToken (const boost::asio::ip::udp::endpoint& ep);
|
|
|
|
|
|
private:
|
|
|
|
boost::asio::ip::udp::socket& OpenSocket (const boost::asio::ip::udp::endpoint& localEndpoint);
|
|
void Receive (boost::asio::ip::udp::socket& socket);
|
|
void HandleReceivedFrom (const boost::system::error_code& ecode, size_t bytes_transferred,
|
|
Packet * packet, boost::asio::ip::udp::socket& socket);
|
|
void HandleReceivedPacket (Packet * packet);
|
|
void HandleReceivedPackets (std::vector<Packet *> packets);
|
|
void ProcessNextPacket (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
|
|
|
|
void ScheduleTermination ();
|
|
void HandleTerminationTimer (const boost::system::error_code& ecode);
|
|
|
|
void ScheduleResend ();
|
|
void HandleResendTimer (const boost::system::error_code& ecode);
|
|
|
|
void ConnectThroughIntroducer (std::shared_ptr<SSU2Session> session);
|
|
|
|
private:
|
|
|
|
ReceiveService m_ReceiveService;
|
|
boost::asio::ip::udp::socket m_SocketV4, m_SocketV6;
|
|
boost::asio::ip::address m_AddressV4, m_AddressV6;
|
|
std::unordered_map<uint64_t, std::shared_ptr<SSU2Session> > m_Sessions;
|
|
std::map<i2p::data::IdentHash, std::shared_ptr<SSU2Session> > m_SessionsByRouterHash;
|
|
std::map<boost::asio::ip::udp::endpoint, std::shared_ptr<SSU2Session> > m_PendingOutgoingSessions;
|
|
std::map<boost::asio::ip::udp::endpoint, std::pair<uint64_t, uint32_t> > m_IncomingTokens, m_OutgoingTokens; // remote endpoint -> (token, expires in seconds)
|
|
std::map<uint32_t, std::shared_ptr<SSU2Session> > m_Relays; // we are introducer, relay tag -> session
|
|
i2p::util::MemoryPoolMt<Packet> m_PacketsPool;
|
|
boost::asio::deadline_timer m_TerminationTimer, m_ResendTimer;
|
|
std::shared_ptr<SSU2Session> m_LastSession;
|
|
|
|
public:
|
|
|
|
// for HTTP/I2PControl
|
|
const decltype(m_Sessions)& GetSSU2Sessions () const { return m_Sessions; };
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|