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change datagram routing path if nothing comes back in 10 seconds

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orignal 2020-07-15 16:20:35 -04:00
parent 67b94d3533
commit c41554109b
4 changed files with 85 additions and 70 deletions
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7
libi2pd/Datagram.cpp
View File

@ -315,6 +315,13 @@ namespace datagram
}
auto path = m_RoutingSession->GetSharedRoutingPath();
if (path && m_RoutingSession->IsRatchets () &&
m_LastUse > m_RoutingSession->GetLastActivityTimestamp ()*1000 + DATAGRAM_SESSION_PATH_TIMEOUT)
{
m_RoutingSession->SetSharedRoutingPath (nullptr);
path = nullptr;
}
if (path)
{
if (path->outboundTunnel && !path->outboundTunnel->IsEstablished ())

6
libi2pd/ECIESX25519AEADRatchetSession.cpp
View File

@ -770,7 +770,7 @@ namespace garlic
if (m_NextSendRatchet->newKey) payloadLen += 32;
}
uint8_t paddingSize = 0;
if (payloadLen)
if (payloadLen || ts > m_LastSentTimestamp + ECIESX25519_SEND_INACTIVITY_TIMEOUT)
{
int delta = (int)ECIESX25519_OPTIMAL_PAYLOAD_SIZE - (int)payloadLen;
if (delta < 0 || delta > 3) // don't create padding if we are close to optimal size
@ -791,6 +791,9 @@ namespace garlic
}
}
std::vector<uint8_t> v(payloadLen);
if (payloadLen)
{
m_LastSentTimestamp = ts;
size_t offset = 0;
// DateTime
if (first)
@ -868,6 +871,7 @@ namespace garlic
htobe16buf (v.data () + offset, paddingSize); offset += 2;
memset (v.data () + offset, 0, paddingSize); offset += paddingSize;
}
}
return v;
}

7
libi2pd/ECIESX25519AEADRatchetSession.h
View File

@ -27,7 +27,8 @@ namespace garlic
{
const int ECIESX25519_RESTART_TIMEOUT = 120; // number of second since session creation we can restart session after
const int ECIESX25519_EXPIRATION_TIMEOUT = 480; // in seconds
const int ECIESX25519_INACTIVITY_TIMEOUT = 90; // number of second we receive nothing and should restart if we can
const int ECIESX25519_INACTIVITY_TIMEOUT = 90; // number of seconds we receive nothing and should restart if we can
const int ECIESX25519_SEND_INACTIVITY_TIMEOUT = 5000; // number of milliseconds we can send empty(pyaload only) packet after
const int ECIESX25519_INCOMING_TAGS_EXPIRATION_TIMEOUT = 600; // in seconds
const int ECIESX25519_PREVIOUS_TAGSET_EXPIRATION_TIMEOUT = 180; // 180
const int ECIESX25519_TAGSET_MAX_NUM_TAGS = 4096; // number of tags we request new tagset after
@ -148,6 +149,7 @@ namespace garlic
bool IsInactive (uint64_t ts) const { return ts > m_LastActivityTimestamp + ECIESX25519_INACTIVITY_TIMEOUT && CanBeRestarted (ts); }
bool IsRatchets () const { return true; };
uint64_t GetLastActivityTimestamp () const { return m_LastActivityTimestamp; };
private:
@ -182,7 +184,8 @@ namespace garlic
uint8_t m_NSREncodedKey[32], m_NSRH[32], m_NSRKey[32]; // new session reply, for incoming only
std::shared_ptr<i2p::crypto::X25519Keys> m_EphemeralKeys;
SessionState m_State = eSessionStateNew;
uint64_t m_SessionCreatedTimestamp = 0, m_LastActivityTimestamp = 0; // incoming
uint64_t m_SessionCreatedTimestamp = 0, m_LastActivityTimestamp = 0, // incoming
m_LastSentTimestamp = 0; // in milliseconds
std::shared_ptr<RatchetTagSet> m_SendTagset, m_NSRSendTagset;
std::unique_ptr<i2p::data::IdentHash> m_Destination;// TODO: might not need it
std::list<std::pair<uint16_t, int> > m_AckRequests; // (tagsetid, index)

1
libi2pd/Garlic.h
View File

@ -114,6 +114,7 @@ namespace garlic
virtual bool CleanupUnconfirmedTags () { return false; }; // for I2CP, override in ElGamalAESSession
virtual bool MessageConfirmed (uint32_t msgID);
virtual bool IsRatchets () const { return false; };
virtual uint64_t GetLastActivityTimestamp () const { return 0; }; // non-zero for rathets only
void SetLeaseSetUpdated ()
{