C++ endpoint::address方法代码示例

void udp_socket::wrap(udp::endpoint const& ep, char const* p, int len, error_code& ec)
{
	CHECK_MAGIC;
	using namespace libtorrent::detail;

	char header[20];
	char* h = header;

	write_uint16(0, h); // reserved
	write_uint8(0, h); // fragment
	write_uint8(ep.address().is_v4()?1:4, h); // atyp
	write_address(ep.address(), h);
	write_uint16(ep.port(), h);

	boost::array<asio::const_buffer, 2> iovec;
	iovec[0] = asio::const_buffer(header, h - header);
	iovec[1] = asio::const_buffer(p, len);

#if TORRENT_USE_IPV6
	if (m_proxy_addr.address().is_v4() && m_ipv4_sock.is_open())
#endif
		m_ipv4_sock.send_to(iovec, m_proxy_addr, 0, ec);
#if TORRENT_USE_IPV6
	else
		m_ipv6_sock.send_to(iovec, m_proxy_addr, 0, ec);
#endif
}

void rpc_manager::invoke(int message_id, udp::endpoint target_addr
	, observer_ptr o)
{
	INVARIANT_CHECK;

	if (m_destructing)
	{
		o->abort();
		return;
	}

	msg m;
	m.message_id = message_id;
	m.reply = false;
	m.id = m_our_id;
	m.addr = target_addr;
	TORRENT_ASSERT(!m_transactions[m_next_transaction_id]);
#ifdef TORRENT_DEBUG
	int potential_new_id = m_next_transaction_id;
#endif
#ifndef BOOST_NO_EXCEPTIONS
	try
	{
#endif
		m.transaction_id.clear();
		std::back_insert_iterator<std::string> out(m.transaction_id);
		io::write_uint16(m_next_transaction_id, out);
		
		o->send(m);

		o->sent = time_now();
#if TORRENT_USE_IPV6
		o->target_addr = target_addr.address();
#else
		o->target_addr = target_addr.address().to_v4();
#endif
		o->port = target_addr.port();

#ifdef TORRENT_DHT_VERBOSE_LOGGING
		TORRENT_LOG(rpc) << "Invoking " << messages::ids[message_id] 
			<< " -> " << target_addr;
#endif	
		m_send(m);
		new_transaction_id(o);
#ifndef BOOST_NO_EXCEPTIONS
	}
	catch (std::exception& e)
	{
		// m_send may fail with "no route to host"
		TORRENT_ASSERT(potential_new_id == m_next_transaction_id);
		o->abort();
	}
#endif
}

void udp_socket::send(udp::endpoint const& ep, char const* p, int len, error_code& ec)
{
	CHECK_MAGIC;

	TORRENT_ASSERT(is_open());

	// if the sockets are closed, the udp_socket is closing too
	if (!is_open()) return;

	if (m_tunnel_packets)
	{
		// send udp packets through SOCKS5 server
		wrap(ep, p, len, ec);
		return;	
	}

	if (m_queue_packets)
	{
		m_queue.push_back(queued_packet());
		queued_packet& qp = m_queue.back();
		qp.ep = ep;
		qp.buf.insert(qp.buf.begin(), p, p + len);
		return;
	}

#if TORRENT_USE_IPV6
	if (ep.address().is_v4() && m_ipv4_sock.is_open())
#endif
		m_ipv4_sock.send_to(asio::buffer(p, len), ep, 0, ec);
#if TORRENT_USE_IPV6
	else
		m_ipv6_sock.send_to(asio::buffer(p, len), ep, 0, ec);
#endif
}

string EndpointToString(const udp::endpoint &endpoint)
{	
	string strIp = endpoint.address().to_string();
	unsigned int dwPort = endpoint.port();
	char szIpPort[32] = {0};
	sprintf(szIpPort, "%s:%d", strIp.c_str(), dwPort);
	return szIpPort;
}

void observer::set_target(udp::endpoint const& ep)
{
	m_sent = clock_type::now();

	m_port = ep.port();
#if TORRENT_USE_IPV6
	if (ep.address().is_v6())
	{
		flags |= flag_ipv6_address;
		m_addr.v6 = ep.address().to_v6().to_bytes();
	}
	else
#endif
	{
		flags &= ~flag_ipv6_address;
		m_addr.v4 = ep.address().to_v4().to_bytes();
	}
}

	broadcast_socket::broadcast_socket(io_service& ios
		, udp::endpoint const& multicast_endpoint
		, receive_handler_t const& handler
		, bool loopback)
		: m_multicast_endpoint(multicast_endpoint)
		, m_on_receive(handler)
		, m_ip_broadcast(false)
	{
		TORRENT_ASSERT(is_multicast(m_multicast_endpoint.address()));

		using namespace asio::ip::multicast;
	
		error_code ec;
		std::vector<ip_interface> interfaces = enum_net_interfaces(ios, ec);

#if TORRENT_USE_IPV6
		if (multicast_endpoint.address().is_v6())
			open_multicast_socket(ios, address_v6::any(), loopback, ec);
		else
#endif
			open_multicast_socket(ios, address_v4::any(), loopback, ec);
		
		for (std::vector<ip_interface>::const_iterator i = interfaces.begin()
			, end(interfaces.end()); i != end; ++i)
		{
			// only multicast on compatible networks
			if (i->interface_address.is_v4() != multicast_endpoint.address().is_v4()) continue;
			// ignore any loopback interface
			if (!loopback && is_loopback(i->interface_address)) continue;

			ec = error_code();
			open_multicast_socket(ios, i->interface_address, loopback, ec);
#ifndef NDEBUG
//			fprintf(stderr, "broadcast socket [ if: %s group: %s ] %s\n"
//				, i->interface_address.to_string().c_str()
//				, print_address(multicast_endpoint.address()).c_str()
//				, ec.message().c_str());
#endif
			open_unicast_socket(ios, i->interface_address
				, i->netmask.is_v4() ? i->netmask.to_v4() : address_v4());
		}
	}

	node_entry(node_id const& id_, udp::endpoint ep, int roundtriptime = 0xffff, bool pinged = false)
		: addr(ep.address())
		, port(ep.port())
		, timeout_count(pinged ? 0 : 0xffff)
		, rtt(roundtriptime)
		, id(id_)
	{
#ifdef TORRENT_DHT_VERBOSE_LOGGING
		first_seen = time_now();
#endif
	}

bool CUDPSocket::SendData(udp::endpoint&  ep, char* msg, int size, string& errInfo, unsigned long iProxyIp /*= 0*/, unsigned short iProxyPort /*= 0*/)
{
	if(ep.address().to_v4().to_string().empty())
		return false;

	if(ep.address().to_v4().to_string()=="255.255.255.255")
		return false;

	if(ep.port() <=0 || ep.port() >65535)
		return false;


	if(msg == NULL)
		return true;

    try
    {
        int ret = this->m_mySocket.send_to(boost::asio::buffer((const void*)msg, size), ep);
        if (ret < size)
        {
            return false;
        }
    }
    catch (const boost::system::error_code& err)
    {
        ostringstream oss;
        oss << "严重错误 CUDPSocket error_code2 " << err.value();
        make_log_func_(oss.str());
        return false;
    }
    catch (...)
    {
        ostringstream oss;
        oss << "严重错误...";
        make_log_func_(oss.str());
        return false;
    }


	return true;
}

	node_entry::node_entry(udp::endpoint ep)
		: last_queried(min_time())
		, id(0)
		, a(ep.address().to_v4().to_bytes())
		, p(ep.port())
		, rtt(0xffff)
		, timeout_count(0xff)
	{
#ifdef TORRENT_DHT_VERBOSE_LOGGING
		first_seen = aux::time_now();
#endif
	}

void DatagramTransceiver::sendMessage(const QString &msg, const udp::endpoint& remote_endpoint)
{
   bool write_in_progress = m_write_msgs.empty() == false;

   MessageToSend* struct_msg = new MessageToSend;
   struct_msg->destination_endpoint.address(remote_endpoint.address());
   struct_msg->destination_endpoint.port(remote_endpoint.port());
   struct_msg->msg = msg;

    m_write_msgs.push_back(struct_msg);

    if (write_in_progress == false) doSend();
}

void observer::set_target(udp::endpoint const& ep)
{
#ifdef TORRENT_DHT_VERBOSE_LOGGING
	// use high resolution timers for logging
	m_sent = time_now_hires();
#else
	m_sent = time_now();
#endif

	m_port = ep.port();
#if TORRENT_USE_IPV6
	if (ep.address().is_v6())
	{
		flags |= flag_ipv6_address;
		m_addr.v6 = ep.address().to_v6().to_bytes();
	}
	else
#endif
	{
		flags &= ~flag_ipv6_address;
		m_addr.v4 = ep.address().to_v4().to_bytes();
	}
}

void udp_socket::bind(udp::endpoint const& ep, error_code& ec)
{
	CHECK_MAGIC;
	TORRENT_ASSERT(is_single_thread());

	TORRENT_ASSERT(m_abort == false);
	if (m_abort)
	{
		ec = boost::asio::error::operation_aborted;
		return;
	}

	if (m_ipv4_sock.is_open()) m_ipv4_sock.close(ec);
#if TORRENT_USE_IPV6
	if (m_ipv6_sock.is_open()) m_ipv6_sock.close(ec);
#endif

	if (ep.address().is_v4())
	{
		m_ipv4_sock.open(udp::v4(), ec);
		if (ec) return;
		m_ipv4_sock.bind(ep, ec);
		if (ec) return;
		udp::socket::non_blocking_io ioc(true);
		m_ipv4_sock.io_control(ioc, ec);
		if (ec) return;
		setup_read(&m_ipv4_sock);
	}
#if TORRENT_USE_IPV6
	else
	{
#ifdef IPV6_V6ONLY
		m_ipv6_sock.set_option(v6only(true), ec);
		if (ec) return;
#endif
		m_ipv6_sock.bind(ep, ec);
		if (ec) return;
		udp::socket::non_blocking_io ioc(true);
		m_ipv6_sock.io_control(ioc, ec);
		if (ec) return;
		setup_read(&m_ipv6_sock);
	}
#endif
#ifdef TORRENT_DEBUG
	m_started = true;
#endif
	m_bind_port = ep.port();
}

void udp_socket::bind(udp::endpoint const& ep, error_code& ec)
{
	CHECK_MAGIC;
	mutex_t::scoped_lock l(m_mutex);	

	TORRENT_ASSERT(m_abort == false);
	if (m_abort) return;

	if (m_ipv4_sock.is_open()) m_ipv4_sock.close(ec);
#if TORRENT_USE_IPV6
	if (m_ipv6_sock.is_open()) m_ipv6_sock.close(ec);
#endif

	if (ep.address().is_v4())
	{
		m_ipv4_sock.open(udp::v4(), ec);
		if (ec) return;
		m_ipv4_sock.bind(ep, ec);
		if (ec) return;

		if (m_v4_outstanding == 0)
		{
			++m_v4_outstanding;
			m_ipv4_sock.async_receive_from(asio::buffer(m_v4_buf, sizeof(m_v4_buf))
				, m_v4_ep, boost::bind(&udp_socket::on_read, this, &m_ipv4_sock, _1, _2));
		}
	}
#if TORRENT_USE_IPV6
	else
	{
		m_ipv6_sock.set_option(v6only(true), ec);
		if (ec) return;
		m_ipv6_sock.bind(ep, ec);
		if (ec) return;
		if (m_v6_outstanding == 0)
		{
			++m_v6_outstanding;
			m_ipv6_sock.async_receive_from(asio::buffer(m_v6_buf, sizeof(m_v6_buf))
				, m_v6_ep, boost::bind(&udp_socket::on_read, this, &m_ipv6_sock, _1, _2));
		}
	}
#endif
#ifdef TORRENT_DEBUG
	m_started = true;
#endif
	m_bind_port = ep.port();
}

//==============================================================================
//	Handle Connection (uglysolution.com)
//	- Checks if the connection already exists. If it exists, restart timeout timer.
//	  Else, add new connection.
//==============================================================================
boost::shared_ptr<Connection> ConnectionHandler::handleConnection( udp::endpoint& _endpoint )
{
    unsigned int connection_size = m_connections.size();

    // Check if the connection already exists
    for( unsigned int i = 0; i < connection_size; i++ )
    {
        if( m_connections[i]->endpoint.address().to_string().compare(_endpoint.address().to_string()) == 0 && m_connections[i]->endpoint.port() == _endpoint.port() )
        {
            boost::shared_ptr<Connection> connection = m_connections[i];
            connection->timout_timer.expires_from_now( boost::posix_time::seconds(TIMEOUT) );
            connection->timout_timer.async_wait( boost::bind(&ConnectionHandler::timeout, this, connection, boost::asio::placeholders::error) );
            return m_connections[i];
        }
    }

    // Check if connection size is greater than the allowed amount of connections
    if( connection_size >= MAX_CONNECTIONS )
        return boost::shared_ptr<Connection>();

    // Find an connection ID
    m_id_counter++;
    for( unsigned int i = 0; i < m_connections.size(); i++ )
    {
        if( m_connections[i]->connection_id == m_id_counter )
        {
            m_id_counter++;
            i = 0;
        }
    }

    // Add the connection and start the timers
    boost::shared_ptr<Connection> new_connection( new Connection(m_id_counter, _endpoint, (*m_io_service)) );
    new_connection->ack_timer.async_wait( boost::bind(&ConnectionHandler::requestAck, this, new_connection, boost::asio::placeholders::error) );
    new_connection->timout_timer.async_wait( boost::bind(&ConnectionHandler::timeout, this, new_connection, boost::asio::placeholders::error) );
    m_connections.push_back( new_connection );

    // temp solution
    if( m_network_handler->isServer() )
        new_connection->sync_timer.async_wait( boost::bind(&ConnectionHandler::syncClock, this, new_connection, boost::asio::placeholders::error) );

    return m_connections.back();
}

bool dht_tracker::send_packet(entry& e, udp::endpoint const& addr)
{
    static char const version_str[] = {'L', 'T'
                                       , LIBTORRENT_VERSION_MAJOR, LIBTORRENT_VERSION_MINOR
                                      };
    e["v"] = std::string(version_str, version_str + 4);

    m_send_buf.clear();
    bencode(std::back_inserter(m_send_buf), e);

    // update the quota. We won't prevent the packet to be sent if we exceed
    // the quota, we'll just (potentially) block the next incoming request.

    m_send_quota -= int(m_send_buf.size());

    error_code ec;
    m_send_fun(addr, m_send_buf, ec, 0);
    if (ec)
    {
        m_counters.inc_stats_counter(counters::dht_messages_out_dropped);
#ifndef TORRENT_DISABLE_LOGGING
        m_log->log_packet(dht_logger::outgoing_message, m_send_buf, addr);
#endif
        return false;
    }

    m_counters.inc_stats_counter(counters::dht_bytes_out, m_send_buf.size());
    // account for IP and UDP overhead
    m_counters.inc_stats_counter(counters::sent_ip_overhead_bytes
                                 , addr.address().is_v6() ? 48 : 28);
    m_counters.inc_stats_counter(counters::dht_messages_out);
#ifndef TORRENT_DISABLE_LOGGING
    m_log->log_packet(dht_logger::outgoing_message, m_send_buf, addr);
#endif
    return true;
}