Function at_socket

components/net/at/at_socket/at_socket.c:504–553

static void at_closed_notice_cb(struct at_socket *sock, at_socket_evt_t event, const char *buff, size_t bfsz);

int at_socket(int domain, int type, int protocol)
{
    struct at_socket *sock = RT_NULL;
    enum at_socket_type socket_type;

    /* check socket family protocol */
    if(domain != AF_INET && domain != AF_AT)
    {
        rt_set_errno(EAFNOSUPPORT);
        return -1;
    }

    /*TODO check protocol*/

    switch(type)
    {
    case SOCK_STREAM:
        socket_type = AT_SOCKET_TCP;
        break;

    case SOCK_DGRAM:
        socket_type = AT_SOCKET_UDP;
        break;

    default :
        LOG_E("Don't support socket type (%d)!", type);
        rt_set_errno(EPROTOTYPE);
        return -1;
    }

    /* allocate and initialize a new AT socket */
    sock = alloc_socket(socket_type);
    if (sock == RT_NULL)
    {
        LOG_E("Failed to allocate socket");
        rt_set_errno(EIO);
        return -1;
    }
    sock->type = socket_type;
    sock->state = AT_SOCKET_OPEN;

    /* set AT socket receive data callback function */
    sock->ops->at_set_event_cb(AT_SOCKET_EVT_RECV, at_recv_notice_cb);
    sock->ops->at_set_event_cb(AT_SOCKET_EVT_CLOSED, at_closed_notice_cb);
#ifdef AT_USING_SOCKET_SERVER
    sock->ops->at_set_event_cb(AT_SOCKET_EVT_CONNECTED, at_connect_notice_cb);
#endif

    return sock->socket;
}

int at_closesocket(int socket)
{