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stream recieve queue

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orignal 2014-01-10 20:21:38 -05:00
parent 54f2955e2f
commit 41ef22cf09
3 changed files with 92 additions and 14 deletions
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63
Streaming.cpp
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@ -1,5 +1,6 @@
#include "I2PEndian.h"
#include <string>
#include <algorithm>
#include <cryptopp/gzip.h>
#include "Log.h"
#include "RouterInfo.h"
@ -20,9 +21,15 @@ namespace stream
m_RecvStreamID = i2p::context.GetRandomNumberGenerator ().GenerateWord32 ();
}
void Stream::HandleNextPacket (const uint8_t * buf, size_t len)
Stream::~Stream ()
{
const uint8_t * end = buf + len;
while (auto packet = m_ReceiveQueue.Get ())
delete packet;
}
void Stream::HandleNextPacket (Packet * packet)
{
const uint8_t * end = packet->buf + packet->len, * buf = packet->buf;
buf += 4; // sendStreamID
if (!m_SendStreamID)
m_SendStreamID = be32toh (*(uint32_t *)buf);
@ -61,6 +68,9 @@ namespace stream
// we have reached payload section
std::string str((const char *)buf, end-buf);
LogPrint ("Payload: ", str);
packet->offset = buf - packet->buf;
m_ReceiveQueue.Put (packet);
}
size_t Stream::Send (uint8_t * buf, size_t len, int timeout)
@ -105,6 +115,37 @@ namespace stream
DeleteI2NPMessage (msg);
return len;
}
size_t Stream::Receive (uint8_t * buf, size_t len, int timeout)
{
if (m_ReceiveQueue.IsEmpty ())
{
if (!m_ReceiveQueue.Wait (timeout, 0))
return 0;
}
// either non-empty or we have received empty
size_t pos = 0;
while (pos < len)
{
Packet * packet = m_ReceiveQueue.Peek ();
if (packet)
{
size_t l = std::min (packet->GetLength (), len - pos);
memcpy (buf + pos, packet->GetBuffer (), l);
pos += l;
packet->offset += l;
if (!packet->GetLength ())
{
m_ReceiveQueue.Get ();
delete packet;
}
}
else // no more data available
break;
}
return pos;
}
StreamingDestination * sharedLocalDestination = nullptr;
@ -124,14 +165,17 @@ namespace stream
DeleteI2NPMessage (m_LeaseSet);
}
void StreamingDestination::HandleNextPacket (const uint8_t * buf, size_t len)
void StreamingDestination::HandleNextPacket (Packet * packet)
{
uint32_t sendStreamID = be32toh (*(uint32_t *)(buf));
uint32_t sendStreamID = be32toh (*(uint32_t *)(packet->buf));
auto it = m_Streams.find (sendStreamID);
if (it != m_Streams.end ())
it->second->HandleNextPacket (buf, len);
it->second->HandleNextPacket (packet);
else
{
LogPrint ("Unknown stream ", sendStreamID);
delete packet;
}
}
Stream * StreamingDestination::CreateNewStream (const i2p::data::LeaseSet * remote)
@ -232,13 +276,14 @@ namespace stream
CryptoPP::Gunzip decompressor;
decompressor.Put (buf, length);
decompressor.MessageEnd();
uint8_t uncompressed[2048];
int uncompressedSize = decompressor.MaxRetrievable ();
decompressor.Get (uncompressed, uncompressedSize);
Packet * uncompressed = new Packet;
uncompressed->offset = 0;
uncompressed->len = decompressor.MaxRetrievable ();
decompressor.Get (uncompressed->buf, uncompressed->len);
// then forward to streaming engine
// TODO: we have onle one destination, might be more
if (sharedLocalDestination)
sharedLocalDestination->HandleNextPacket (uncompressed, uncompressedSize);
sharedLocalDestination->HandleNextPacket (uncompressed);
}
else
LogPrint ("Data: protocol ", buf[9], " is not supported");