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Streaming MTU size 1812 for ECIESX25519AEADRatchet

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orignal 2020-05-18 20:45:25 -04:00
parent 7b418b3adf
commit c7c6e5917a
2 changed files with 13 additions and 5 deletions
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16
libi2pd/Streaming.cpp
View file

@ -63,7 +63,7 @@ namespace stream
m_AckSendTimer (m_Service), m_NumSentBytes (0), m_NumReceivedBytes (0), m_Port (port),
m_WindowSize (MIN_WINDOW_SIZE), m_RTT (INITIAL_RTT), m_RTO (INITIAL_RTO),
m_AckDelay (local.GetOwner ()->GetStreamingAckDelay ()),
m_LastWindowSizeIncreaseTime (0), m_NumResendAttempts (0)
m_LastWindowSizeIncreaseTime (0), m_NumResendAttempts (0), m_MTU (STREAMING_MTU)
{
RAND_bytes ((uint8_t *)&m_RecvStreamID, 4);
m_RemoteIdentity = remote->GetIdentity ();
@ -75,7 +75,7 @@ namespace stream
m_ReceiveTimer (m_Service), m_ResendTimer (m_Service), m_AckSendTimer (m_Service),
m_NumSentBytes (0), m_NumReceivedBytes (0), m_Port (0), m_WindowSize (MIN_WINDOW_SIZE),
m_RTT (INITIAL_RTT), m_RTO (INITIAL_RTO), m_AckDelay (local.GetOwner ()->GetStreamingAckDelay ()),
m_LastWindowSizeIncreaseTime (0), m_NumResendAttempts (0)
m_LastWindowSizeIncreaseTime (0), m_NumResendAttempts (0), m_MTU (STREAMING_MTU)
{
RAND_bytes ((uint8_t *)&m_RecvStreamID, 4);
}
@ -473,6 +473,12 @@ namespace stream
{
// initial packet
m_Status = eStreamStatusOpen;
if (!m_RemoteLeaseSet) m_RemoteLeaseSet = m_LocalDestination.GetOwner ()->FindLeaseSet (m_RemoteIdentity->GetIdentHash ());;
if (m_RemoteLeaseSet)
{
m_RoutingSession = m_LocalDestination.GetOwner ()->GetRoutingSession (m_RemoteLeaseSet, true);
m_MTU = m_RoutingSession->IsRatchets () ? STREAMING_MTU_RATCHETS : STREAMING_MTU;
}
uint16_t flags = PACKET_FLAG_SYNCHRONIZE | PACKET_FLAG_FROM_INCLUDED |
PACKET_FLAG_SIGNATURE_INCLUDED | PACKET_FLAG_MAX_PACKET_SIZE_INCLUDED;
if (isNoAck) flags |= PACKET_FLAG_NO_ACK;
@ -486,7 +492,7 @@ namespace stream
size += 2; // options size
m_LocalDestination.GetOwner ()->GetIdentity ()->ToBuffer (packet + size, identityLen);
size += identityLen; // from
htobe16buf (packet + size, STREAMING_MTU);
htobe16buf (packet + size, m_MTU);
size += 2; // max packet size
if (isOfflineSignature)
{
@ -498,7 +504,7 @@ namespace stream
memset (signature, 0, signatureLen); // zeroes for now
size += signatureLen; // signature
htobe16buf (optionsSize, packet + size - 2 - optionsSize); // actual options size
size += m_SendBuffer.Get (packet + size, STREAMING_MTU); // payload
size += m_SendBuffer.Get (packet + size, m_MTU); // payload
m_LocalDestination.GetOwner ()->Sign (packet, size, signature);
}
else
@ -508,7 +514,7 @@ namespace stream
size += 2; // flags
htobuf16 (packet + size, 0); // no options
size += 2; // options size
size += m_SendBuffer.Get(packet + size, STREAMING_MTU); // payload
size += m_SendBuffer.Get(packet + size, m_MTU); // payload
}
p->len = size;
packets.push_back (p);

2
libi2pd/Streaming.h
View file

@ -41,6 +41,7 @@ namespace stream
const uint16_t PACKET_FLAG_OFFLINE_SIGNATURE = 0x0800;
const size_t STREAMING_MTU = 1730;
const size_t STREAMING_MTU_RATCHETS = 1812;
const size_t MAX_PACKET_SIZE = 4096;
const size_t COMPRESSION_THRESHOLD_SIZE = 66;
const int MAX_NUM_RESEND_ATTEMPTS = 6;
@ -234,6 +235,7 @@ namespace stream
int m_WindowSize, m_RTT, m_RTO, m_AckDelay;
uint64_t m_LastWindowSizeIncreaseTime;
int m_NumResendAttempts;
size_t m_MTU;
};
class StreamingDestination: public std::enable_shared_from_this<StreamingDestination>