owner-nrf52sdk/nRF5_SDK_15.2.0/components/iot/mqtt/mqtt_transport.c

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 * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA
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/** @file mqtt_transport.c
 *
 * @brief Internal functions to handle transport in MQTT module.
 */


#include "mqtt_transport.h"


/**< Function pointer array for TCP/TLS transport handlers. */
const transport_procedure_t transport_fn[MQTT_TRANSPORT_MAX] =
{
    {
        mqtt_client_tcp_connect,
        mqtt_client_tcp_write,
        mqtt_client_tcp_read,
        mqtt_client_tcp_disconnect
    },
    {
        mqtt_client_tls_connect,
        mqtt_client_tls_write,
        mqtt_client_tls_read,
        mqtt_client_tls_disconnect
    }
};


uint32_t mqtt_transport_connect(mqtt_client_t * p_client)
{
    return transport_fn[p_client->transport_type].connect(p_client);
}


uint32_t mqtt_transport_write(mqtt_client_t * p_client, uint8_t const * p_data, uint32_t datalen)
{
    return transport_fn[p_client->transport_type].write(p_client, p_data, datalen);
}


uint32_t mqtt_transport_read(mqtt_client_t * p_client, uint8_t * p_data, uint32_t datalen)
{
    return transport_fn[p_client->transport_type].read(p_client, p_data, datalen);
}


uint32_t mqtt_transport_disconnect(mqtt_client_t * p_client)
{
    return transport_fn[p_client->transport_type].disconnect(p_client);
}