From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Stream_Element_Array
Date: Thu, 15 Sep 2011 10:20:08 +0200
Date: 2011-09-15T10:20:08+02:00 [thread overview]
Message-ID: <1esmml9qftomp.vihelaijmcar$.dlg@40tude.net> (raw)
In-Reply-To: 01c12338-e9f8-49ab-863d-c8282be3875e@g31g2000yqh.googlegroups.com
On Wed, 14 Sep 2011 14:29:41 -0700 (PDT), Alexander Korolev wrote:
> "In your case the other end is not the memory but the wire"
> I am not sure I undestand you complitly. What's wrong, at least for
> now, to build \ construct in memory the Buffer (Stream_Element_Array)
> with full command (according the format I posted) inside and after
> that send it over any stream (including GNAT.Serial, Socket etc)
> derived from Root_Stream_Type. Basicly, I don't need even a Type -
> I am using it just get Unsigned_16 serialized into Stream Elements.
Yes, but in most cases it does not work so straightforwardly. You usually
need headers, checksums etc. The point is that you have more layers of the
protocol than just raw values over stream of octets. This is why you use
stream rather as a transport for packets/messages and often more upper
levels too (state machine etc). The idea is to always encapsulate each
level into a data type. It saves much time later.
> That's it. It's kind of hadcrafting. I also can override My_Type'Write
> attribute and send to Serial port ... Your approach is to create a new
> stream actully, which will take into account the PROTOCOL specifics.
> Absolutly agree with that. But what is wrong with manual approach I am
> implementing.
It is not wrong, it is just might not work because protocols are more
complex (layered) than this simple model.
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2011-09-15 8:19 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-14 3:13 Stream_Element_Array Alexander Korolev
2011-09-14 5:29 ` Stream_Element_Array Per Sandberg
2011-09-14 8:34 ` Stream_Element_Array Alexander Korolev
2011-09-14 8:31 ` Stream_Element_Array Simon Wright
2011-09-14 9:09 ` Stream_Element_Array Alexander Korolev
2011-09-14 9:40 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 9:41 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 10:18 ` Stream_Element_Array Simon Wright
2011-09-14 12:42 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 16:20 ` Stream_Element_Array Simon Wright
2011-09-14 19:53 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 10:53 ` Stream_Element_Array Simon Wright
2011-09-14 12:48 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 14:48 ` Stream_Element_Array Alexander Korolev
2011-09-14 15:08 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 17:16 ` Stream_Element_Array Alexander Korolev
2011-09-14 20:13 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-14 21:29 ` Stream_Element_Array Alexander Korolev
2011-09-15 8:20 ` Dmitry A. Kazakov [this message]
2011-09-15 18:58 ` Stream_Element_Array Alexander Korolev
2011-09-15 20:48 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 0:20 ` Stream_Element_Array Alexander Korolev
2011-09-15 19:15 ` Stream_Element_Array Alexander Korolev
2011-09-15 20:11 ` Stream_Element_Array Simon Wright
2011-09-15 20:34 ` Stream_Element_Array Alexander Korolev
2011-09-15 21:42 ` Stream_Element_Array Simon Wright
2011-09-15 21:50 ` Stream_Element_Array Simon Wright
2011-09-16 0:01 ` Stream_Element_Array Alexander Korolev
2011-09-16 0:18 ` Stream_Element_Array Adam Beneschan
2011-09-16 7:22 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 10:21 ` Stream_Element_Array Simon Wright
2011-09-16 12:13 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 17:20 ` Stream_Element_Array Simon Wright
2011-09-16 19:32 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-16 22:18 ` Stream_Element_Array Simon Wright
2011-09-17 8:18 ` Stream_Element_Array Dmitry A. Kazakov
2011-09-19 23:22 ` Stream_Element_Array Randy Brukardt
2011-09-15 21:28 ` Stream_Element_Array Alexander Korolev
2011-09-15 2:33 ` Stream_Element_Array Alexander Korolev
2011-09-19 23:11 ` Stream_Element_Array Randy Brukardt
2011-09-14 12:19 ` Stream_Element_Array Gautier write-only
2011-09-16 11:17 ` Stream_Element_Array anon
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox