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I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
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87 lines
2.9 KiB
87 lines
2.9 KiB
#ifndef SSU_H__ |
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#define SSU_H__ |
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#include <inttypes.h> |
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#include <string.h> |
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#include <map> |
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#include <list> |
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#include <set> |
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#include <thread> |
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#include <boost/asio.hpp> |
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#include "aes.h" |
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#include "I2PEndian.h" |
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#include "Identity.h" |
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#include "RouterInfo.h" |
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#include "I2NPProtocol.h" |
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#include "SSUSession.h" |
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namespace i2p |
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{ |
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namespace transport |
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{ |
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const int SSU_KEEP_ALIVE_INTERVAL = 30; // 30 seconds |
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const int SSU_TO_INTRODUCER_SESSION_DURATION = 3600; // 1 hour |
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const size_t SSU_MAX_NUM_INTRODUCERS = 3; |
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class SSUServer |
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{ |
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public: |
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SSUServer (int port); |
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~SSUServer (); |
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void Start (); |
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void Stop (); |
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SSUSession * GetSession (std::shared_ptr<const i2p::data::RouterInfo> router, bool peerTest = false); |
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SSUSession * FindSession (const i2p::data::RouterInfo * router) const; |
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SSUSession * FindSession (const boost::asio::ip::udp::endpoint& e) const; |
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SSUSession * GetRandomEstablishedSession (const SSUSession * excluded); |
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void DeleteSession (SSUSession * session); |
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void DeleteAllSessions (); |
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boost::asio::io_service& GetService () { return m_Socket.get_io_service(); }; |
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const boost::asio::ip::udp::endpoint& GetEndpoint () const { return m_Endpoint; }; |
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void Send (const uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& to); |
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void AddRelay (uint32_t tag, const boost::asio::ip::udp::endpoint& relay); |
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SSUSession * FindRelaySession (uint32_t tag); |
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private: |
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void Run (); |
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void Receive (); |
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void ReceiveV6 (); |
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void HandleReceivedFrom (const boost::system::error_code& ecode, std::size_t bytes_transferred); |
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void HandleReceivedFromV6 (const boost::system::error_code& ecode, std::size_t bytes_transferred); |
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void HandleReceivedBuffer (boost::asio::ip::udp::endpoint& from, uint8_t * buf, std::size_t bytes_transferred); |
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template<typename Filter> |
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SSUSession * GetRandomSession (Filter filter); |
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std::set<SSUSession *> FindIntroducers (int maxNumIntroducers); |
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void ScheduleIntroducersUpdateTimer (); |
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void HandleIntroducersUpdateTimer (const boost::system::error_code& ecode); |
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private: |
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bool m_IsRunning; |
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std::thread * m_Thread; |
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boost::asio::io_service m_Service; |
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boost::asio::io_service::work m_Work; |
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boost::asio::ip::udp::endpoint m_Endpoint, m_EndpointV6; |
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boost::asio::ip::udp::socket m_Socket, m_SocketV6; |
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boost::asio::ip::udp::endpoint m_SenderEndpoint, m_SenderEndpointV6; |
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boost::asio::deadline_timer m_IntroducersUpdateTimer; |
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std::list<boost::asio::ip::udp::endpoint> m_Introducers; // introducers we are connected to |
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i2p::crypto::AESAlignedBuffer<2*SSU_MTU_V4> m_ReceiveBuffer; |
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i2p::crypto::AESAlignedBuffer<2*SSU_MTU_V6> m_ReceiveBufferV6; |
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std::map<boost::asio::ip::udp::endpoint, SSUSession *> m_Sessions; |
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std::map<uint32_t, boost::asio::ip::udp::endpoint> m_Relays; // we are introducer |
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public: |
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// for HTTP only |
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const decltype(m_Sessions)& GetSessions () const { return m_Sessions; }; |
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}; |
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} |
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} |
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#endif |
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