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drop duplicated I2NP messages

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orignal 2023-01-05 15:33:41 -05:00
parent 0d3ede56cb
commit 55704ece3a
2 changed files with 46 additions and 7 deletions
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11
libi2pd/SSU2Session.h
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2022, The PurpleI2P Project
* Copyright (c) 2022-2023, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -39,6 +39,9 @@ namespace transport
const int SSU2_RESEND_INTERVAL = 300; // in milliseconds
const int SSU2_MAX_NUM_RESENDS = 5;
const int SSU2_INCOMPLETE_MESSAGES_CLEANUP_TIMEOUT = 30; // in seconds
const int SSU2_MAX_NUM_RECEIVED_I2NP_MSGIDS = 5000; // how many msgID we store for duplicates check
const int SSU2_RECEIVED_I2NP_MSGIDS_CLEANUP_TIMEOUT = 10; // in seconds
const int SSU2_DECAY_INTERVAL = 20; // in seconds
const size_t SSU2_MIN_WINDOW_SIZE = 16; // in packets
const size_t SSU2_MAX_WINDOW_SIZE = 256; // in packets
const size_t SSU2_MIN_RTO = 100; // in milliseconds
@ -47,7 +50,7 @@ namespace transport
const size_t SSU2_MAX_OUTGOING_QUEUE_SIZE = 500; // in messages
const int SSU2_MAX_NUM_ACK_RANGES = 32; // to send
const uint8_t SSU2_MAX_NUM_FRAGMENTS = 64;
// flags
const uint8_t SSU2_FLAG_IMMEDIATE_ACK_REQUESTED = 0x01;
@ -308,7 +311,8 @@ namespace transport
void HandleRelayIntro (const uint8_t * buf, size_t len, int attempts = 0);
void HandleRelayResponse (const uint8_t * buf, size_t len);
void HandlePeerTest (const uint8_t * buf, size_t len);
void HandleI2NPMsg (std::shared_ptr<I2NPMessage>&& msg);
size_t CreateAddressBlock (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& ep);
size_t CreateRouterInfoBlock (uint8_t * buf, size_t len, std::shared_ptr<const i2p::data::RouterInfo> r);
size_t CreateAckBlock (uint8_t * buf, size_t len);
@ -351,6 +355,7 @@ namespace transport
SSU2TerminationReason m_TerminationReason;
size_t m_MaxPayloadSize;
std::unique_ptr<i2p::data::IdentHash> m_PathChallenge;
std::unordered_map<uint32_t, uint32_t> m_ReceivedI2NPMsgIDs; // msgID -> timestamp in seconds
};
inline uint64_t CreateHeaderMask (const uint8_t * kh, const uint8_t * nonce)