protocol_plugin.h

/*
 * Protocol plugin defintions.
 */

#ifndef PROTOCOL_PLUGIN_H
#define PROTOCOL_PLUGIN_H 1

typedef void (*cb_responder)(responder_ctx *responder_data,
                             protocol_binary_response_header *hdr,
                             char *data,
                             size_t data_len);

typedef int connection_id;

enum plugin_cb_result {
    cb_done,    
    cb_defer,   
    cb_hangup,  
};

typedef enum plugin_cb_result (*plugin_cb)(void *userdata,
                                           connection_id conn_id,
                                           cb_responder responder,
                                           responder_ctx *responder_data,
                                           protocol_binary_response_header *hdr,
                                           char *data,
                                           size_t data_len);

enum plugin_cb_state {
    cb_connected,    
    cb_disconnected  
};

typedef void (*plugin_conn_observer)(void *userdata,
                                     enum plugin_cb_state state,
                                     connection_id conn_id);

void plugin_register_callback(uint8_t cmd_id,
                              plugin_cb callback,
                              void *userdata);

void plugin_get_callback(int8_t cmd_id,
                         plugin_cb *current_callback,
                         void **current_userdata);

void plugin_register_conn_observer(void *userdata,
                                   plugin_conn_observer obs);

void plugin_unregister_conn_observer(plugin_conn_observer obs);

#endif PROTOCOL_PLUGIN_H