Class: Bluetooth::Devices

Inherits:

Object

• Object
• Bluetooth::Devices

Defined in:

ext/bluetooth/win32/ruby_bluetooth.cpp

Class Method Summary

• .scan ⇒ Object

  Scan local network for visible remote devices.

Class Method Details

.scan ⇒ Object

Scan local network for visible remote devices

# File 'ext/bluetooth/linux/ruby_bluetooth.c', line 376

static VALUE bt_devices_scan(VALUE self)
{
    inquiry_info *ii = NULL;
    int max_rsp, num_rsp;
    int dev_id, sock, len, flags;
    int i;

    dev_id = hci_get_route(NULL);
    sock = hci_open_dev( dev_id );
    if (dev_id < 0 || sock < 0)
    {
        rb_raise (rb_eIOError, "error opening socket");
    }

    len  = 8;
    max_rsp = 255;
    flags = IREQ_CACHE_FLUSH;
    ii = (inquiry_info*)malloc(max_rsp * sizeof(inquiry_info));

    num_rsp = hci_inquiry(dev_id, len, max_rsp, NULL, &ii, flags);
    if( num_rsp < 0 )
        rb_raise(rb_eIOError, "hci_inquiry");

    VALUE devices_array = rb_ary_new();

    // Iterate over every device found and add it to result array
    for (i = 0; i < num_rsp; i++)
    {
        char addr[19] = { 0 };
        char name[248] = { 0 };

        ba2str(&(ii+i)->bdaddr, addr);
        memset(name, 0, sizeof(name));
        if (hci_read_remote_name(sock, &(ii+i)->bdaddr, sizeof(name),
                                 name, 0) < 0)
            strcpy(name, "(unknown)");

        VALUE bt_dev = rb_funcall(bt_cBluetoothDevice, rb_intern("new"), 2,
                rb_str_new(name), rb_str_new2(addr));

        rb_ary_push(devices_array, bt_dev);
    }

    free( ii );
    close( sock );
    return devices_array;
}