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send and handle incorrect version reason for retry message

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orignal
2026-03-15 17:43:26 -04:00
parent 4ef63d7f1a
commit 92c5d2b1e2
2 changed files with 16 additions and 4 deletions
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libi2pd/SSU2Session.cpp
+15 -3
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@@ -831,7 +831,14 @@ namespace transport
if (header.h.flags[0] >= 2 && header.h.flags[0] <= 4) // ver
{
if (m_Version > 2)
SetVersion (header.h.flags[0]);
{
if (!SetVersion (header.h.flags[0]))
{
m_TerminationReason = eSSU2TerminationReasonIncompatibleVersion;
SendRetry ();
return;
}
}
}
else
#else
@@ -1583,6 +1590,8 @@ namespace transport
}
if (!m_NoiseState) m_NoiseState.reset (new i2p::crypto::NoiseSymmetricState);
if (m_TerminationReason == eSSU2TerminationReasonIncompatibleVersion)
m_Version = 2; // fallback to non-PQ
#if OPENSSL_PQ
if (m_Version > 2)
InitNoiseXKStateMLKEM1 (*m_NoiseState, (i2p::data::CryptoKeyType)(m_Version + 2), m_Address->s);
@@ -1590,6 +1599,7 @@ namespace transport
#endif
InitNoiseXKState1 (*m_NoiseState, m_Address->s); // reset Noise TODO: check state
m_TerminationReason = eSSU2TerminationReasonNormalClose;
return SendSessionRequest (token);
}
@@ -1772,6 +1782,8 @@ namespace transport
m_State = eSSU2SessionStateClosingConfirmed;
Done ();
}
else
m_TerminationReason = (SSU2TerminationReason)rsn;
}
else
LogPrint(eLogWarning, "SSU2: Unexpected termination block size ", size);
@@ -3408,7 +3420,7 @@ namespace transport
return m_RemoteEndpoint.address ().is_v4 () ? i2p::data::RouterInfo::eSSU2V4 : i2p::data::RouterInfo::eSSU2V6;
}
void SSU2Session::SetVersion (uint8_t version)
bool SSU2Session::SetVersion (uint8_t version)
{
switch (version)
{
@@ -3421,7 +3433,7 @@ namespace transport
default:
m_Version = 2;
}
m_Version = (version >= 2 && version <= 4) ? version : 2;
return m_Version == version;
}
}
}