I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#ifndef SSU_DATA_H__
#define SSU_DATA_H__
#include <inttypes.h>
#include <map>
#include <vector>
#include "I2NPProtocol.h"
namespace i2p
{
namespace ssu
{
// data flags
const uint8_t DATA_FLAG_EXTENDED_DATA_INCLUDED = 0x02;
const uint8_t DATA_FLAG_WANT_REPLY = 0x04;
const uint8_t DATA_FLAG_REQUEST_PREVIOUS_ACKS = 0x08;
const uint8_t DATA_FLAG_EXPLICIT_CONGESTION_NOTIFICATION = 0x10;
const uint8_t DATA_FLAG_ACK_BITFIELDS_INCLUDED = 0x40;
const uint8_t DATA_FLAG_EXPLICIT_ACKS_INCLUDED = 0x80;
class SSUSession;
class SSUData
{
public:
SSUData (SSUSession& session);
~SSUData ();
void ProcessMessage (uint8_t * buf, size_t len);
void Send (i2p::I2NPMessage * msg);
private:
void SendMsgAck (uint32_t msgID);
void ProcessSentMessageAck (uint32_t msgID);
private:
struct IncompleteMessage
{
I2NPMessage * msg;
uint8_t nextFragmentNum;
IncompleteMessage (I2NPMessage * m): msg (m), nextFragmentNum (1) {};
};
SSUSession& m_Session;
std::map<uint32_t, IncompleteMessage *> m_IncomleteMessages;
std::map<uint32_t, std::vector<uint8_t *> > m_SentMessages; // msgID -> fragments
};
}
}
#endif