[maemo-developers] [maemo-developers] Libosso RPC

[From: Krzysztof Sasiak]

Hi, 
	I recently started developing for the nokia 770 platform. I'm using the RPC functions from libosso wrapper library to communicate between two processes. However I don't really understand how it works. I added a method to be called out whenever a client connects to a server, and sends a message. The method is being called out but I can't get to the contents of the message. All I can read is the types of data I sent, that is when I send an integer and a string I can read 'i', 's'.  This is part of the client code:

(...)

void FillMessage (DBusMessage *msg, void *data) {

	dbus_int32_t v_INT32 = 42;
 	const char *v_STRING = "Hello World";
	
	dbus_message_append_args (msg, 
				DBUS_TYPE_INT32, &v_INT32,
				DBUS_TYPE_STRING, &v_STRING,
				DBUS_TYPE_INT32, &v_INT32,
				DBUS_TYPE_INVALID);
	
	};

(...)

error = osso_rpc_run_with_argfill (main_context,
					OSSO_EXAMPLE_SERVICE,
					OSSO_EXAMPLE_OBJECT,
					OSSO_EXAMPLE_IFACE,
					OSSO_EXAMPLE_MESSAGE,
					NULL,
					FillMessage,
					NULL);

(...)

And this is the server code:

(...)

gint dbus_req_handler(const gchar * interface, const gchar * method,
                      GArray * arguments, gpointer data,
                      osso_rpc_t * retval)
/*
The libosso documentation says that arguments is an GArray of osso_prc_t structures. I don't understand the definition of this structure. What do '::' mean in the osso_rpc_t definition and how do I get to the contents of a message
*/

{
	osso_rpc_t * temp;
	guint i;

	printf(">>>%s\n", __FUNCTION__);

	printf("message from service: %s\n", (gchar *)data);
	printf("Interface: %s\n", interface);
	printf("Method: %s\n", method);
	
	for (i=0;i<arguments->len;i++) 
	
	{
	temp = &g_array_index (arguments, osso_rpc_t, i);

	printf("%s\n", temp);
	};

	return OSSO_OK;
}

(...)
	
  	result = osso_rpc_set_cb_f(main_context, 
        	               OSSO_EXAMPLE_SERVICE, 
                               OSSO_EXAMPLE_OBJECT, 
                               OSSO_EXAMPLE_IFACE,
                               dbus_req_handler, 
			       &data);	

(...)

The libosso documentation says that arguments is an GArray of osso_prc_t structures. I don't understand the definition of this structure. What do '::' mean in the osso_rpc_t definition and how do I get to the contents of a message

I will be grateful for any help. Thanks in advance.
-- 
Pozdrawiam

Krzysiek Sasiak
TLEN_ID: krzsas
GG: 4358937