For dbus-send, how to send a struct param?

[Felipe Gasper]

> On Sep 17, 2019, at 7:08 AM, 刘铁罡 <liutiegang at bdstar.com> wrote:
> 
> Dear DBus Support List,
>  
> Now I want to method-call via dbus-send, my command is :
> dbus-send --session --type=method_call --print-reply --dest=carservice.McuAdapterService.v1_0_McuAdapterService /McuAdapterService carservice.McuAdapterService.v1_0.request uint16:1015 uint16:1016 array:byte:1,2,3
> But I got error:
> Error org.freedesktop.DBus.Error.UnknownMethod: Method "request" with signature "qqay" on interface "carservice.McuAdapterService.v1_0" doesn't exist
>  
> In fact, I want to send "(qqay)" via dbus-send.
> I can’t find a struct sample of dbus-send.
>  
> Would you please help me on it.

If you have access to Perl, you could use Protocol::DBus to construct a similar command. It’ll be wordier, but it’ll do what you want. Something like (untested):

perl -MData::Dumper -MProtocol::DBus::Client -e'my $dbus = Protocol::DBus::Client::login_session(); $dbus->initialize(); my $done_yn; $dbus->send_call( destination => "carservice.McuAdapterService.v1_0_McuAdapterService", path => "/McuAdapterService", interface => "carservice.McuAdapterService.v1_0", member => "request", signature => "(qqay)", body => [ [ 1015, 1016, [1, 2, 3] ] ] )->then( sub { print Dumper shift() } )->finally( sub { $done_yn = 1 } ); $dbus->get_message() while !$done_yn'

-F