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common Send method

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orignal 2014-04-18 19:27:39 -04:00
parent 75ddb26c18
commit 31295a663b
2 changed files with 36 additions and 33 deletions
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66
Streaming.cpp
View File

@ -138,20 +138,8 @@ namespace stream
}
}
size_t Stream::Send (uint8_t * buf, size_t len, int timeout)
size_t Stream::Send (const uint8_t * buf, size_t len, int timeout)
{
if (!m_IsOpen)
ConnectAndSend (buf, len);
else
{
// TODO: implement
}
return len;
}
void Stream::ConnectAndSend (uint8_t * buf, size_t len)
{
m_IsOpen = true;
Packet * p = new Packet ();
uint8_t * packet = p->GetBuffer ();
// TODO: implement setters
@ -167,27 +155,43 @@ namespace stream
packet[size] = 0;
size++; // NACK count
size++; // resend delay
// TODO: for initial packet only, following packets have different falgs
*(uint16_t *)(packet + size) = htobe16 (PACKET_FLAG_SYNCHRONIZE |
PACKET_FLAG_FROM_INCLUDED | PACKET_FLAG_SIGNATURE_INCLUDED |
PACKET_FLAG_MAX_PACKET_SIZE_INCLUDED | PACKET_FLAG_NO_ACK);
size += 2; // flags
*(uint16_t *)(packet + size) = htobe16 (sizeof (i2p::data::Identity) + 40 + 2); // identity + signature + packet size
size += 2; // options size
memcpy (packet + size, &m_LocalDestination->GetIdentity (), sizeof (i2p::data::Identity));
size += sizeof (i2p::data::Identity); // from
*(uint16_t *)(packet + size) = htobe16 (STREAMING_MTU);
size += 2; // max packet size
uint8_t * signature = packet + size; // set it later
memset (signature, 0, 40); // zeroes for now
size += 40; // signature
memcpy (packet + size, buf, len);
size += len; // payload
m_LocalDestination->Sign (packet, size, signature);
if (!m_IsOpen)
{
// initial packet
m_IsOpen = true;
*(uint16_t *)(packet + size) = htobe16 (PACKET_FLAG_SYNCHRONIZE |
PACKET_FLAG_FROM_INCLUDED | PACKET_FLAG_SIGNATURE_INCLUDED |
PACKET_FLAG_MAX_PACKET_SIZE_INCLUDED | PACKET_FLAG_NO_ACK);
size += 2; // flags
*(uint16_t *)(packet + size) = htobe16 (sizeof (i2p::data::Identity) + 40 + 2); // identity + signature + packet size
size += 2; // options size
memcpy (packet + size, &m_LocalDestination->GetIdentity (), sizeof (i2p::data::Identity));
size += sizeof (i2p::data::Identity); // from
*(uint16_t *)(packet + size) = htobe16 (STREAMING_MTU);
size += 2; // max packet size
uint8_t * signature = packet + size; // set it later
memset (signature, 0, 40); // zeroes for now
size += 40; // signature
memcpy (packet + size, buf, len);
size += len; // payload
m_LocalDestination->Sign (packet, size, signature);
}
else
{
// follow on packet
*(uint16_t *)(packet + size) = 0;
size += 2; // flags
*(uint16_t *)(packet + size) = 0; // no options
size += 2; // options size
memcpy (packet + size, buf, len);
size += len; // payload
}
p->len = size;
m_Service.post (boost::bind (&Stream::SendPacket, this, p));
return len;
}
void Stream::SendQuickAck ()
{

3
Streaming.h
View File

@ -79,7 +79,7 @@ namespace stream
bool IsEstablished () const { return m_SendStreamID; };
void HandleNextPacket (Packet * packet);
size_t Send (uint8_t * buf, size_t len, int timeout); // timeout in seconds
size_t Send (const uint8_t * buf, size_t len, int timeout); // timeout in seconds
template<typename Buffer, typename ReceiveHandler>
void AsyncReceive (const Buffer& buffer, ReceiveHandler handler, int timeout = 0);
@ -90,7 +90,6 @@ namespace stream
private:
void ConnectAndSend (uint8_t * buf, size_t len);
void SendQuickAck ();
bool SendPacket (Packet * packet);
bool SendPacket (const uint8_t * buf, size_t len);