Mirrors/i2pd
2
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-04-27 11:17:49 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

udp tunnels

Browse source
This commit is contained in:
Jeff Becker 2016-08-21 15:02:17 -04:00
parent c16632d99a
commit aa3723d2bd
No known key found for this signature in database
GPG key ID: AB950234D6EA286B
6 changed files with 338 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

78
I2PTunnel.h
View file

@ -9,6 +9,7 @@
#include <boost/asio.hpp>
#include "Identity.h"
#include "Destination.h"
#include "Datagram.h"
#include "Streaming.h"
#include "I2PService.h"
@ -128,8 +129,79 @@ namespace client
std::string m_Name, m_Destination;
const i2p::data::IdentHash * m_DestinationIdentHash;
int m_DestinationPort;
};
};
/** 2 minute timeout for udp sessions */
const uint64_t I2P_UDP_SESSION_TIMEOUT = 1000 * 60 * 2;
/** max size for i2p udp */
const size_t I2P_UDP_MAX_MTU = i2p::datagram::MAX_DATAGRAM_SIZE;
struct UDPSession
{
std::shared_ptr<i2p::client::ClientDestination> Destination;
boost::asio::ip::udp::socket IPSocket;
i2p::data::IdentHash Identity;
boost::asio::ip::udp::endpoint ExpectedEndpoint;
boost::asio::ip::udp::endpoint FromEndpoint;
uint64_t LastActivity;
uint16_t LocalPort;
uint16_t RemotePort;
uint8_t m_Buffer[I2P_UDP_MAX_MTU];
UDPSession(boost::asio::io_service & ios, std::shared_ptr<i2p::client::ClientDestination> localDestination, boost::asio::ip::udp::endpoint remote, const i2p::data::IdentHash ident, uint16_t ourPort, uint16_t theirPort);
void HandleReceived(const boost::system::error_code & ecode, std::size_t len);
void Receive();
};
/** server side udp tunnel, many i2p inbound to 1 ip outbound */
class I2PUDPServerTunnel
{
public:
I2PUDPServerTunnel(const std::string & name, std::shared_ptr<i2p::client::ClientDestination> localDestination, boost::asio::ip::udp::endpoint forwardTo, uint16_t port, boost::asio::io_service & service);
~I2PUDPServerTunnel();
/** expire stale udp conversations */
void ExpireStale(const uint64_t delta=I2P_UDP_SESSION_TIMEOUT);
private:
void HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len);
UDPSession & ObtainUDPSession(const i2p::data::IdentityEx& from, uint16_t localPort, uint16_t remotePort);
private:
const uint16_t LocalPort;
boost::asio::ip::udp::endpoint m_Endpoint;
std::mutex m_SessionsMutex;
std::vector<UDPSession> m_Sessions;
boost::asio::io_service & m_Service;
std::shared_ptr<i2p::client::ClientDestination> m_Destination;
uint8_t m_Buffer[I2P_UDP_MAX_MTU];
};
class I2PUDPClientTunnel
{
public:
I2PUDPClientTunnel(const std::string & name, const std::string &remoteDest, boost::asio::ip::udp::endpoint localEndpoint, std::shared_ptr<i2p::client::ClientDestination> localDestination, uint16_t remotePort, boost::asio::io_service & service);
~I2PUDPClientTunnel();
void Start();
private:
void HandleRecvFromI2P(const i2p::data::IdentityEx& from, uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len);
void TryResolving();
UDPSession * m_Session;
const std::string m_RemoteDest;
std::shared_ptr<i2p::client::ClientDestination> m_LocalDest;
i2p::data::IdentHash * m_RemoteIdent;
const boost::asio::ip::udp::endpoint m_LocalEndpoint;
std::thread * m_ResolveThread;
boost::asio::io_service & m_Service;
uint16_t LocalPort;
uint16_t RemotePort;
bool m_cancel_resolve;
};
class I2PServerTunnel: public I2PService
{
public:
@ -150,7 +222,7 @@ namespace client
const char* GetName() { return m_Name.c_str (); }
void SetMaxConnsPerMinute(const uint32_t conns) { m_PortDestination->SetMaxConnsPerMinute(conns); }
private:
void HandleResolve (const boost::system::error_code& ecode, boost::asio::ip::tcp::resolver::iterator it,
@ -167,7 +239,7 @@ namespace client
boost::asio::ip::tcp::endpoint m_Endpoint;
std::shared_ptr<i2p::stream::StreamingDestination> m_PortDestination;
std::set<i2p::data::IdentHash> m_AccessList;
bool m_IsAccessList;
bool m_IsAccessList;
};
class I2PServerTunnelHTTP: public I2PServerTunnel