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Code Issues Releases Activity

I2PTunnel data transfer

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This commit is contained in:
orignal 2014-08-13 15:25:52 -04:00
parent 0110b70195
commit ffd2a9e69e
2 changed files with 137 additions and 6 deletions
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117
I2PTunnel.cpp
View File

@ -1,4 +1,7 @@
#include <boost/bind.hpp>
#include "base64.h"
#include "Log.h"
#include "NetDb.h"
#include "I2PTunnel.h"
namespace i2p
@ -9,26 +12,129 @@ namespace stream
const i2p::data::LeaseSet * leaseSet): m_Socket (socket)
{
m_Stream = i2p::stream::CreateStream (*leaseSet);
m_Stream->Send (m_Buffer, 0, 0); // connect
StreamReceive ();
Receive ();
}
I2PTunnelConnection::~I2PTunnelConnection ()
{
Terminate ();
}
void I2PTunnelConnection::Terminate ()
{
if (m_Stream)
{
m_Stream->Close ();
DeleteStream (m_Stream);
m_Stream = nullptr;
}
delete m_Socket;
// TODO: remove from I2PTunnel
}
void I2PTunnelConnection::Receive ()
{
m_Socket->async_read_some (boost::asio::buffer(m_Buffer, I2P_TUNNEL_CONNECTION_BUFFER_SIZE),
boost::bind(&I2PTunnelConnection::HandleReceived, this,
boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
}
void I2PTunnelConnection::HandleReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred)
{
if (ecode)
{
LogPrint ("I2PTunnel read error: ", ecode.message ());
Terminate ();
}
else
{
if (m_Stream)
m_Stream->Send (m_Buffer, bytes_transferred, 0);
Receive ();
}
}
void I2PTunnelConnection::HandleWrite (const boost::system::error_code& ecode)
{
StreamReceive ();
}
void I2PTunnelConnection::StreamReceive ()
{
if (m_Stream)
m_Stream->AsyncReceive (boost::asio::buffer (m_StreamBuffer, I2P_TUNNEL_CONNECTION_BUFFER_SIZE),
boost::bind (&I2PTunnelConnection::HandleStreamReceive, this,
boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred),
I2P_TUNNEL_CONNECTION_MAX_IDLE);
}
void I2PTunnelConnection::HandleStreamReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred)
{
if (ecode)
{
LogPrint ("I2PTunnel stream read error: ", ecode.message ());
Terminate ();
}
else
{
boost::asio::async_write (*m_Socket, boost::asio::buffer (m_StreamBuffer, bytes_transferred),
boost::bind (&I2PTunnelConnection::HandleWrite, this, boost::asio::placeholders::error));
}
}
I2PClientTunnel::I2PClientTunnel (boost::asio::io_service& service, const std::string& destination, int port):
m_Service (service), m_Acceptor (m_Service, boost::asio::ip::tcp::endpoint (boost::asio::ip::tcp::v4(), port)),
m_Destination (destination), m_RemoteLeaseSet (nullptr)
m_Destination (destination), m_DestinationIdentHash (nullptr), m_RemoteLeaseSet (nullptr)
{
}
I2PClientTunnel::~I2PClientTunnel ()
{
Stop ();
}
void I2PClientTunnel::Start ()
{
auto pos = m_Destination.find(".b32.i2p");
if (pos != std::string::npos)
{
uint8_t hash[32];
i2p::data::Base32ToByteStream (m_Destination.c_str(), pos, hash, 32);
m_DestinationIdentHash = new i2p::data::IdentHash (hash);
}
else
{
pos = m_Destination.find (".i2p");
if (pos != std::string::npos)
{
auto identHash = i2p::data::netdb.FindAddress (m_Destination.substr (0, pos));
if (identHash)
m_DestinationIdentHash = new i2p::data::IdentHash (*identHash);
}
}
if (m_DestinationIdentHash)
{
i2p::data::netdb.Subscribe (*m_DestinationIdentHash);
m_RemoteLeaseSet = i2p::data::netdb.FindLeaseSet (*m_DestinationIdentHash);
}
else
LogPrint ("I2PTunnel unknown destination ", m_Destination);
m_Acceptor.listen ();
Accept ();
}
void I2PClientTunnel::Stop ()
{
m_Acceptor.close();
for (auto it: m_Connections)
delete it;
m_Connections.clear ();
delete m_DestinationIdentHash;
m_DestinationIdentHash = nullptr;
}
void I2PClientTunnel::Accept ()
{
auto newSocket = new boost::asio::ip::tcp::socket (m_Service);
@ -40,8 +146,13 @@ namespace stream
{
if (!ecode)
{
if (!m_RemoteLeaseSet && m_DestinationIdentHash)
m_RemoteLeaseSet = i2p::data::netdb.FindLeaseSet (*m_DestinationIdentHash);
if (m_RemoteLeaseSet)
new I2PTunnelConnection (socket, m_RemoteLeaseSet);
{
auto connection = new I2PTunnelConnection (socket, m_RemoteLeaseSet);
m_Connections.insert (connection);
}
else
delete socket;
Accept ();

26
I2PTunnel.h
View File

@ -3,6 +3,7 @@
#include <inttypes.h>
#include <string>
#include <set>
#include <boost/asio.hpp>
#include "Identity.h"
#include "Streaming.h"
@ -11,6 +12,8 @@ namespace i2p
{
namespace stream
{
const size_t I2P_TUNNEL_CONNECTION_BUFFER_SIZE = 8192;
const int I2P_TUNNEL_CONNECTION_MAX_IDLE = 3600; // in seconds
class I2PTunnelConnection
{
public:
@ -18,9 +21,21 @@ namespace stream
I2PTunnelConnection (boost::asio::ip::tcp::socket * socket,
const i2p::data::LeaseSet * leaseSet);
~I2PTunnelConnection ();
private:
void Terminate ();
void Receive ();
void HandleReceived (const boost::system::error_code& ecode, std::size_t bytes_transferred);
void HandleWrite (const boost::system::error_code& ecode);
void StreamReceive ();
void HandleStreamReceive (const boost::system::error_code& ecode, std::size_t bytes_transferred);
private:
uint8_t m_Buffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE], m_StreamBuffer[I2P_TUNNEL_CONNECTION_BUFFER_SIZE];
boost::asio::ip::tcp::socket * m_Socket;
Stream * m_Stream;
};
@ -30,7 +45,11 @@ namespace stream
public:
I2PClientTunnel (boost::asio::io_service& service, const std::string& destination, int port);
~I2PClientTunnel ();
void Start ();
void Stop ();
private:
void Accept ();
@ -41,8 +60,9 @@ namespace stream
boost::asio::io_service& m_Service;
boost::asio::ip::tcp::acceptor m_Acceptor;
std::string m_Destination;
i2p::data::IdentHash m_DestinationIdentHash;
const i2p::data::IdentHash * m_DestinationIdentHash;
const i2p::data::LeaseSet * m_RemoteLeaseSet;
std::set<I2PTunnelConnection *> m_Connections;
};
}
}