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I2P: End-to-End encrypted and anonymous Internet
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84 lines
2.6 KiB
84 lines
2.6 KiB
/* |
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* Copyright (c) 2024, The PurpleI2P Project |
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* |
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* This file is part of Purple i2pd project and licensed under BSD3 |
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* |
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* See full license text in LICENSE file at top of project tree |
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*/ |
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#ifndef SSU2_OUT_OF_SESSION_H__ |
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#define SSU2_OUT_OF_SESSION_H__ |
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#include <vector> |
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#include "SSU2Session.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 SSU2_PEER_TEST_RESEND_INTERVAL = 3000; // in milliseconds |
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const int SSU2_PEER_TEST_RESEND_INTERVAL_VARIANCE = 2000; // in milliseconds |
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const int SSU2_PEER_TEST_MAX_NUM_RESENDS = 3; |
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class SSU2PeerTestSession: public SSU2Session // for PeerTest msgs 5,6,7 |
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{ |
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public: |
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SSU2PeerTestSession (SSU2Server& server, uint64_t sourceConnID, uint64_t destConnID); |
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uint8_t GetMsgNumReceived () const { return m_MsgNumReceived; } |
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bool IsConnectedRecently () const { return m_IsConnectedRecently; } |
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void SetStatusChanged () { m_IsStatusChanged = true; } |
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void SendPeerTest (uint8_t msg, const uint8_t * signedData, size_t signedDataLen, |
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std::shared_ptr<const i2p::data::RouterInfo::Address> addr, bool delayed = false); |
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bool ProcessPeerTest (uint8_t * buf, size_t len) override; |
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void Connect () override; // outgoing |
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bool ProcessFirstIncomingMessage (uint64_t connID, uint8_t * buf, size_t len) override; // incoming |
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private: |
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void SendPeerTest (uint8_t msg, const uint8_t * signedData, size_t signedDataLen, bool delayed = false); // PeerTest message |
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void SendPeerTest (uint8_t msg); // send or resend m_SignedData |
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void HandlePeerTest (const uint8_t * buf, size_t len) override; |
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void ScheduleResend (uint8_t msg); |
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private: |
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uint8_t m_MsgNumReceived, m_NumResends; |
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bool m_IsConnectedRecently, m_IsStatusChanged; |
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std::vector<uint8_t> m_SignedData; // for resends |
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boost::asio::deadline_timer m_PeerTestResendTimer; |
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}; |
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const int SSU2_HOLE_PUNCH_RESEND_INTERVAL = 1000; // in milliseconds |
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const int SSU2_HOLE_PUNCH_RESEND_INTERVAL_VARIANCE = 500; // in milliseconds |
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const int SSU2_HOLE_PUNCH_MAX_NUM_RESENDS = 3; |
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class SSU2HolePunchSession: public SSU2Session // Charlie |
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{ |
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public: |
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SSU2HolePunchSession (SSU2Server& server, uint32_t nonce, const boost::asio::ip::udp::endpoint& remoteEndpoint, |
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std::shared_ptr<const i2p::data::RouterInfo::Address> addr); |
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void SendHolePunch (const uint8_t * relayResponseBlock, size_t relayResponseBlockLen); |
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bool ProcessFirstIncomingMessage (uint64_t connID, uint8_t * buf, size_t len) override; // SessionRequest |
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private: |
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void SendHolePunch (); |
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void ScheduleResend (); |
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private: |
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int m_NumResends; |
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std::vector<uint8_t> m_RelayResponseBlock; |
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boost::asio::deadline_timer m_HolePunchResendTimer; |
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}; |
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} |
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} |
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#endif
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