pgm_sender.hpp

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/* SPDX-License-Identifier: MPL-2.0 */
 
#ifndef __ZMQ_PGM_SENDER_HPP_INCLUDED__
#define __ZMQ_PGM_SENDER_HPP_INCLUDED__
 
#if defined ZMQ_HAVE_OPENPGM
 
#include "stdint.hpp"
#include "io_object.hpp"
#include "i_engine.hpp"
#include "options.hpp"
#include "pgm_socket.hpp"
#include "v1_encoder.hpp"
#include "msg.hpp"
 
namespace zmq
{
class io_thread_t;
class session_base_t;
 
class pgm_sender_t ZMQ_FINAL : public io_object_t, public i_engine
{
  public:
    pgm_sender_t (zmq::io_thread_t *parent_, const options_t &options_);
    ~pgm_sender_t ();
 
    int init (bool udp_encapsulation_, const char *network_);
 
    //  i_engine interface implementation.
    bool has_handshake_stage () { return false; };
    void plug (zmq::io_thread_t *io_thread_, zmq::session_base_t *session_);
    void terminate ();
    bool restart_input ();
    void restart_output ();
    void zap_msg_available () {}
    const endpoint_uri_pair_t &get_endpoint () const;
 
    //  i_poll_events interface implementation.
    void in_event ();
    void out_event ();
    void timer_event (int token);
 
  private:
    //  Unplug the engine from the session.
    void unplug ();
 
    //  TX and RX timeout timer ID's.
    enum
    {
        tx_timer_id = 0xa0,
        rx_timer_id = 0xa1
    };
 
    const endpoint_uri_pair_t _empty_endpoint;
 
    //  Timers are running.
    bool has_tx_timer;
    bool has_rx_timer;
 
    session_base_t *session;
 
    //  Message encoder.
    v1_encoder_t encoder;
 
    msg_t msg;
 
    //  Keeps track of message boundaries.
    bool more_flag;
 
    //  PGM socket.
    pgm_socket_t pgm_socket;
 
    //  Socket options.
    options_t options;
 
    //  Poll handle associated with PGM socket.
    handle_t handle;
    handle_t uplink_handle;
    handle_t rdata_notify_handle;
    handle_t pending_notify_handle;
 
    //  Output buffer from pgm_socket.
    unsigned char *out_buffer;
 
    //  Output buffer size.
    size_t out_buffer_size;
 
    //  Number of bytes in the buffer to be written to the socket.
    //  If zero, there are no data to be sent.
    size_t write_size;
 
    ZMQ_NON_COPYABLE_NOR_MOVABLE (pgm_sender_t)
};
}
#endif
 
#endif