PurpleI2P/i2pd
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Code Issues Releases Activity

store sent messages until ack-ed

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This commit is contained in:
orignal 2014-06-12 11:14:22 -04:00
parent d5fff57edb
commit fccb13cedd
2 changed files with 32 additions and 4 deletions
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33
SSUData.cpp
View File

@ -19,8 +19,27 @@ namespace ssu
DeleteI2NPMessage (it.second->msg);
delete it.second;
}
for (auto it: m_SentMessages)
{
for (auto f: it.second)
delete[] f;
}
}
void SSUData::ProcessSentMessageAck (uint32_t msgID)
{
auto it = m_SentMessages.find (msgID);
if (it != m_SentMessages.end ())
{
// delete all ack-ed message's fragments
for (auto f: it->second)
delete[] f;
m_SentMessages.erase (it);
}
else
LogPrint ("SSU ack received for unknown message ", msgID);
}
void SSUData::ProcessMessage (uint8_t * buf, size_t len)
{
//uint8_t * start = buf;
@ -32,7 +51,8 @@ namespace ssu
// explicit ACKs
uint8_t numAcks =*buf;
buf++;
// TODO: process ACKs
for (int i = 0; i < numAcks; i++)
ProcessSentMessageAck (be32toh (((uint32_t *)buf)[i]));
buf += numAcks*4;
}
if (flag & DATA_FLAG_ACK_BITFIELDS_INCLUDED)
@ -42,8 +62,9 @@ namespace ssu
buf++;
for (int i = 0; i < numBitfields; i++)
{
ProcessSentMessageAck (be32toh (*(uint32_t *)buf)); // TODO: should be replaced to fragments
buf += 4; // msgID
// TODO: process ACH bitfields
// TODO: process individual Ack bitfields
while (*buf & 0x80) // not last
buf++;
buf++; // last byte
@ -137,7 +158,9 @@ namespace ssu
void SSUData::Send (i2p::I2NPMessage * msg)
{
uint32_t msgID = htobe32 (msg->ToSSU ());
uint32_t msgID = msg->ToSSU ();
auto fragments = m_SentMessages[msgID];
msgID = htobe32 (msgID);
size_t payloadSize = SSU_MTU - sizeof (SSUHeader) - 9; // 9 = flag + #frg(1) + messageID(4) + frag info (3)
size_t len = msg->GetLength ();
uint8_t * msgBuf = msg->GetSSUHeader ();
@ -145,7 +168,9 @@ namespace ssu
uint32_t fragmentNum = 0;
while (len > 0)
{
uint8_t buf[SSU_MTU + 18], * payload = buf + sizeof (SSUHeader);
uint8_t * buf = new uint8_t[SSU_MTU + 18];
fragments.push_back (buf);
uint8_t * payload = buf + sizeof (SSUHeader);
*payload = DATA_FLAG_WANT_REPLY; // for compatibility
payload++;
*payload = 1; // always 1 message fragment per message

3
SSUData.h
View File

@ -3,6 +3,7 @@
#include <inttypes.h>
#include <map>
#include <vector>
#include "I2NPProtocol.h"
namespace i2p
@ -32,6 +33,7 @@ namespace ssu
private:
void SendMsgAck (uint32_t msgID);
void ProcessSentMessageAck (uint32_t msgID);
private:
@ -45,6 +47,7 @@ namespace ssu
SSUSession& m_Session;
std::map<uint32_t, IncompleteMessage *> m_IncomleteMessages;
std::map<uint32_t, std::vector<uint8_t *> > m_SentMessages; // msgID -> fragments
};
}
}