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Code Issues Releases Activity

handle Datagram3

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orignal 2025-06-24 22:06:36 -04:00
parent 40b90ccea4
commit 8c89c8368a
2 changed files with 23 additions and 1 deletions
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22
libi2pd/Datagram.cpp
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@ -129,6 +129,11 @@ namespace datagram
void DatagramDestination::HandleDatagram3 (uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len,
i2p::garlic::ECIESX25519AEADRatchetSession * from)
{
if (len < 34)
{
LogPrint (eLogWarning, "Datagram: datagram3 is too short ", len);
return;
}
if (from)
{
i2p::data::IdentHash ident(buf);
@ -142,7 +147,22 @@ namespace datagram
auto session = ObtainSession (ident);
session->SetRemoteLeaseSet (ls);
session->Ack ();
// TODO:
auto r = FindReceiver(toPort);
if (r)
{
uint16_t flags = bufbe16toh (buf + 32);
size_t offset = 34;
if (flags & DATAGRAM3_FLAG_OPTIONS)
offset += bufbe16toh (buf + offset) + 2;
if (offset > len)
{
LogPrint (eLogWarning, "Datagram: datagram3 is too short ", len, " expected ", offset);
return;
}
r(*ls->GetIdentity (), fromPort, toPort, buf + offset, len - offset);
}
else
LogPrint (eLogWarning, "Datagram: no receiver for port ", toPort);
}
else
LogPrint (eLogError, "Datagram: Remote LeaseSet static key mismatch for datagram3 from ", ident.ToBase32 ());

2
libi2pd/Datagram.h
View File

@ -45,6 +45,8 @@ namespace datagram
const uint64_t DATAGRAM_MAX_FLUSH_INTERVAL = 5; // in milliseconds
const int DATAGRAM_SESSION_ACK_REQUEST_INTERVAL = 5500; // in milliseconds
constexpr uint16_t DATAGRAM3_FLAG_OPTIONS = 0x10;
class DatagramSession : public std::enable_shared_from_this<DatagramSession>
{