source: source/ariba/utility/transport/StreamTransport/StreamTransport.hpp@ 12774

#ifndef STREAM_TRANSPORT_HPP_

#define STREAM_TRANSPORT_HPP_



// ariba

#include "ariba/utility/transport/asio/unique_io_service.h"

#include "ariba/utility/transport/messages/buffers.hpp"

//#include "ariba/utility/logging/Logging.h"

#include "ariba/utility/addressing2/endpoint.hpp"



// ariba (transport) interfaces

#include "ariba/utility/transport/interfaces/transport_connection.hpp"

#include "ariba/utility/transport/interfaces/transport_protocol.hpp"

#include "ariba/utility/transport/interfaces/transport_listener.hpp"



// system

#include <queue>



// boost

#include <boost/asio.hpp>

#include <boost/shared_ptr.hpp>

#include <boost/enable_shared_from_this.hpp>





namespace ariba {

namespace transport {



using namespace std;

using boost::shared_ptr;

using ariba::transport::detail::unique_io_service;

using boost::system::error_code;

using reboost::shared_buffer_t;

using reboost::message_t;



template <class T>

class StreamTransport :

    public transport_protocol,

    public boost::enable_shared_from_this<StreamTransport<T> >

{

    typedef StreamTransport<T> self;

    typedef shared_ptr<self> StreamTransportPtr;

//use_logging_h(StreamTransport<T>)



    

    

    

private:

    

/*****************

 ** inner class **

 *****************/

    class StreamConnection :

        public transport_connection,

        public boost::enable_shared_from_this<StreamConnection>

    {

    public:

        typedef reboost::message_t Packet;

        typedef std::queue<Packet> OutQueue;

        

        struct header_t

        {

            uint16_t length;

        } __attribute__((packed));

            

        StreamConnection(boost::asio::io_service& io_service, StreamTransportPtr parent);

        

        virtual ~StreamConnection()

                {

                        assert ( this->valid == false );

                }

        

        /// Inherited from transport_connection

        // Thread: ARIBA

        virtual bool send(reboost::message_t message, uint8_t priority = 0);

        // Thread: ARIBA

        virtual ariba::addressing2::EndpointPtr getLocalEndpoint();

        // Thread: ARIBA

        virtual ariba::addressing2::EndpointPtr getRemoteEndpoint();

        // Thread: ARIBA

        virtual void register_communication_link(ariba::utility::LinkID* link);

        // Thread: ARIBA

        virtual void unregister_communication_link(ariba::utility::LinkID* link);

        // Thread: ARIBA

        virtual std::vector<ariba::utility::LinkID*> get_communication_links();

        

        // Thread: BOTH

        virtual void terminate();

        

        void listen();

        

        void async_connect_handler(const error_code& error);

        

        void async_read_header_handler(const error_code& error, size_t bytes_transferred);

        void async_read_data_handler(const error_code& error, size_t bytes_transferred);

        

        /*

         * is called from asio when write operation "returns",

         * calls private function `send_next_package()`

         */

        void async_write_handler(

                reboost::shared_buffer_t packet,

                const error_code& error,

                size_t bytes_transferred);



        

        void enqueue_for_sending(Packet packet, uint8_t priority);

        

    private:

        /*

         * is called from `send` or `async_write_handler` to begin/keep sending

         * sends the next message with the highest priority in this connection

         */

        void send_next_package();



    public:

        typename T::socket sock;

        bool valid;

        StreamTransportPtr parent;

        

        typename T::endpoint partner_endpoint;

        typename T::endpoint local_endpoint;

//        address_v* remote;

//        address_v* local;

        

        vector<OutQueue> out_queues;     // to be locked with out_queues_lock 

        boost::mutex out_queues_lock;

        

        bool sending;       // to be locked with out_queues_lock

        

        header_t header;

        shared_buffer_t buffy;

        

    private:

        std::vector<ariba::utility::LinkID*> communication_links;

    };

    typedef boost::shared_ptr<StreamConnection> ConnPtr;

    typedef std::map<typename T::endpoint, ConnPtr> ConnectionMap;

/*********************

 ** [ inner class ] **

 *********************/



    

    

    

public:

        StreamTransport( const typename T::endpoint& endp );

        virtual ~StreamTransport();

        virtual void start();

        virtual void stop();

        

        /**

     * enqueues message for sending

     * create new connection if necessary

     * starts sending mechanism (if not already running)

     */

    void send(

            const typename T::endpoint&,

            reboost::message_t message,

            uint8_t priority = 0 );

        

        /**

         * Converts address_v to tcp::endpoint and calls the real send() function

         */

        virtual void send(

                const addressing2::EndpointPtr remote,

                reboost::message_t message,

                uint8_t priority = 0 );

        

        /**

         * calls send for each destination endpoint in `endpoints` 

         */

        virtual void send(

                const addressing2::const_EndpointSetPtr endpoints,

                reboost::message_t message,

                uint8_t priority = 0 );

        

        // XXX DEPRECATED

        virtual void terminate( addressing2::EndpointPtr remote );

        

        virtual void terminate( const typename T::endpoint& remote );

        virtual void register_listener( transport_listener* listener );



private:

        void accept();

        void async_accept_handler(ConnPtr conn, const error_code& error);

        

private:

        transport_listener* listener;

        unique_io_service u_io_service;

        typename T::acceptor acceptor;

        

        ConnectionMap connections;

        boost::mutex connections_lock;

};





// aliases

//typedef StreamTransport<boost::asio::ip::tcp> tcpip;

//#ifdef HAVE_LIBBLUETOOTH

//    typedef StreamTransport<boost::asio::bluetooth::rfcomm> rfcomm_transport;

//#endif /* HAVE_LIBBLUETOOTH */





// XXX testing TODO natÃŒrlich brauchen wir das noch... oO

///** 

// * Conversion between ASIO Adresses and ARIBA adresses

// */

//template <class T>

//typename T::endpoint convert_address(const address_v* endpoint);

//

//template <class T>

//address_v::shared_ptr convert_address(const typename T::endpoint& endpoint);







/**

 *  returns a vector of (interesting) network interfaces

 *  

 *  [NOTE: The current implementation returns the scope_ids of

 *  all ethX and wlanX network interfaces, to be used for

 *  connections to link-local ipv6 addresses.]

 *  

 *  TODO move to ariba/communication/networkinfo/AddressDiscovery ??

 *  

 */

vector<uint64_t> get_interface_scope_ids();





}} // namespace ariba::transport



#endif /* STREAM_TRANSPORT_HPP_ */