mirror of
https://github.com/PurpleI2P/i2pd
synced 2024-11-10 00:00:29 +03:00
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
/*
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* Copyright (c) 2013-2021, 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 TUNNEL_ENDPOINT_H__
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#define TUNNEL_ENDPOINT_H__
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#include <inttypes.h>
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#include <map>
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#include <unordered_map>
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#include <string>
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#include "I2NPProtocol.h"
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#include "TunnelBase.h"
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namespace i2p
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{
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namespace tunnel
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{
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class TunnelEndpoint
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{
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struct TunnelMessageBlockEx: public TunnelMessageBlock
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{
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uint64_t receiveTime; // milliseconds since epoch
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uint8_t nextFragmentNum;
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};
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struct Fragment
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{
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bool isLastFragment;
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std::shared_ptr<I2NPMessage> data;
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uint64_t receiveTime; // milliseconds since epoch
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};
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public:
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TunnelEndpoint (bool isInbound): m_IsInbound (isInbound), m_NumReceivedBytes (0) {};
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~TunnelEndpoint ();
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size_t GetNumReceivedBytes () const { return m_NumReceivedBytes; };
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void Cleanup ();
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void HandleDecryptedTunnelDataMsg (std::shared_ptr<I2NPMessage> msg);
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private:
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void HandleFollowOnFragment (uint32_t msgID, bool isLastFragment, const TunnelMessageBlockEx& m);
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void HandleNextMessage (const TunnelMessageBlock& msg);
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void AddOutOfSequenceFragment (uint32_t msgID, uint8_t fragmentNum, bool isLastFragment, std::shared_ptr<I2NPMessage> data);
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bool ConcatNextOutOfSequenceFragment (uint32_t msgID, TunnelMessageBlockEx& msg); // true if something added
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void HandleOutOfSequenceFragments (uint32_t msgID, TunnelMessageBlockEx& msg);
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private:
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std::unordered_map<uint32_t, TunnelMessageBlockEx> m_IncompleteMessages;
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std::map<std::pair<uint32_t, uint8_t>, Fragment> m_OutOfSequenceFragments; // (msgID, fragment#)->fragment
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bool m_IsInbound;
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size_t m_NumReceivedBytes;
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};
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}
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}
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#endif
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