<div dir="ltr">Hi Lawrence,<div> </div><div>Could you give any advises in detail ?</div><div>In worst case, there is three commands sending to three different destination in parallel.</div><div>I need to design server to adapt with that worst case.</div><div> </div><div>Thanks,</div><div> <div class="gmail_quote"><div dir="ltr">On Tue, Sep 18, 2018 at 9:00 PM <<a href="mailto:dbus-request@lists.freedesktop.org">dbus-request@lists.freedesktop.org</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send dbus mailing list submissions to <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> To subscribe or unsubscribe via the World Wide Web, visit <a href="https://lists.freedesktop.org/mailman/listinfo/dbus" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/dbus</a> or, via email, send a message with subject or body 'help' to <a href="mailto:dbus-request@lists.freedesktop.org" target="_blank">dbus-request@lists.freedesktop.org</a> You can reach the person managing the list at <a href="mailto:dbus-owner@lists.freedesktop.org" target="_blank">dbus-owner@lists.freedesktop.org</a> When replying, please edit your Subject line so it is more specific than "Re: Contents of dbus digest..." Today's Topics: 1. Re: dbus Digest, Vol 158, Issue 6 - Multiple connections to dbus-daemon in single appication (dtdang) 2. Re: Multiple connections to dbus-daemon in single appication (Lawrence D'Oliveiro) ---------------------------------------------------------------------- Message: 1 Date: Tue, 18 Sep 2018 10:00:21 +0900 From: dtdang <<a href="mailto:ddt.fet.hut@gmail.com" target="_blank">ddt.fet.hut@gmail.com</a>> To: <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> Subject: Re: dbus Digest, Vol 158, Issue 6 - Multiple connections to dbus-daemon in single appication Message-ID: <CAJpUOadFcJW3Z=<a href="mailto:Nrtx1r0RcCZP3btKNwMJA_bWTHgo7jyebM8A@mail.gmail.com" target="_blank">Nrtx1r0RcCZP3btKNwMJA_bWTHgo7jyebM8A@mail.gmail.com</a>> Content-Type: text/plain; charset="utf-8" Many thanks Lawrence & Simon, But you might misunderstand my point. I would like to register in three separated connections since client will send command with option (like using dbus-send with option --dest=com.app.bluetooth or --dest=com.ap.wifi or --dest=com.ap.ap). So I want to open three separated connection with specific name in three threads to listen from client. It mean that my process will try to open/register 3 separated DBUS connections to dbus-daemon so that whatever being sent by client (regardless of any --dest option) will be proceeded by my server application. So is it possible that an application can register multiple separated dbus-connections to dbus-daemon ? Three separated dbus connections should operate independently. You are right about I am not owning <a href="http://app.com" rel="noreferrer" target="_blank">app.com</a> or <a href="http://ap.com" rel="noreferrer" target="_blank">ap.com</a>. It just my example. Many thanks for correcting it. On Mon, Sep 17, 2018 at 9:00 PM <<a href="mailto:dbus-request@lists.freedesktop.org" target="_blank">dbus-request@lists.freedesktop.org</a>> wrote: > Send dbus mailing list submissions to > <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> > > To subscribe or unsubscribe via the World Wide Web, visit > <a href="https://lists.freedesktop.org/mailman/listinfo/dbus" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/dbus</a> > or, via email, send a message with subject or body 'help' to > <a href="mailto:dbus-request@lists.freedesktop.org" target="_blank">dbus-request@lists.freedesktop.org</a> > > You can reach the person managing the list at > <a href="mailto:dbus-owner@lists.freedesktop.org" target="_blank">dbus-owner@lists.freedesktop.org</a> > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of dbus digest..." > > > Today's Topics: > > 1. Multiple connections to dbus-daemon in single appication (dtdang) > 2. Re: Multiple connections to dbus-daemon in single appication > (Lawrence D'Oliveiro) > 3. Re: Multiple connections to dbus-daemon in single appication > (Simon McVittie) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 17 Sep 2018 11:30:52 +0900 > From: dtdang <<a href="mailto:ddt.fet.hut@gmail.com" target="_blank">ddt.fet.hut@gmail.com</a>> > To: <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> > Subject: Multiple connections to dbus-daemon in single appication > Message-ID: > <CAJpUOadT=+scdTHV4xY6Zrmt18+_N4wHfLAZfjeMKyN=- > <a href="mailto:oFnDA@mail.gmail.com" target="_blank">oFnDA@mail.gmail.com</a>> > Content-Type: text/plain; charset="utf-8" > > Dear all, > > Is it possible to create multiple connections by using "dbus_bus_get" & > "dbus_bus_request_name" inside a single server to listen from multiple > client ? > For instance, I just want to register three connections to dbus-daemon as > bellows in a single application. > > com.app.bluetooth > com.ap.wifi > com.ap.ap > > Thanks, > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > <a href="https://lists.freedesktop.org/archives/dbus/attachments/20180917/cc7ee0a9/attachment-0001.html" rel="noreferrer" target="_blank">https://lists.freedesktop.org/archives/dbus/attachments/20180917/cc7ee0a9/attachment-0001.html</a> > > > > ------------------------------ > > Message: 2 > Date: Mon, 17 Sep 2018 15:03:11 +1200 > From: Lawrence D'Oliveiro <<a href="mailto:ldo@geek-central.gen.nz" target="_blank">ldo@geek-central.gen.nz</a>> > To: <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> > Subject: Re: Multiple connections to dbus-daemon in single appication > Message-ID: <<a href="mailto:20180917150311.07e9ddcf@theon.geek-central.gen.nz" target="_blank">20180917150311.07e9ddcf@theon.geek-central.gen.nz</a>> > Content-Type: text/plain; charset=US-ASCII > > On Mon, 17 Sep 2018 11:30:52 +0900, dtdang wrote: > > > Is it possible to create multiple connections by using "dbus_bus_get" > > & "dbus_bus_request_name" inside a single server to listen from > > multiple client ? > > For instance, I just want to register three connections to > > dbus-daemon as bellows in a single application. > > > > com.app.bluetooth > > com.ap.wifi > > com.ap.ap > > You can register multiple bus names on a single connection. > > > ------------------------------ > > Message: 3 > Date: Mon, 17 Sep 2018 12:45:10 +0100 > From: Simon McVittie <<a href="mailto:smcv@collabora.com" target="_blank">smcv@collabora.com</a>> > To: <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> > Subject: Re: Multiple connections to dbus-daemon in single appication > Message-ID: <<a href="mailto:20180917114510.GA22202@archetype.pseudorandom.co.uk" target="_blank">20180917114510.GA22202@archetype.pseudorandom.co.uk</a>> > Content-Type: text/plain; charset=us-ascii > > On Mon, 17 Sep 2018 at 11:30:52 +0900, dtdang wrote: > > Is it possible to create multiple connections by using "dbus_bus_get" & > > "dbus_bus_request_name" inside a single server to listen from multiple > client ? > > You seem to be mixing up connections with well-known bus names. > > As Lawrence D'Oliveiro said in a previous reply, you can register > multiple well-known bus names on the same connection by calling > dbus_bus_request_name() several times on the same DBusConnection. If you > want multiple well-known bus names, 95% of the time this is the right > thing to do. > > You can also open multiple connections, each of which can own any number > of well-known names, by calling dbus_bus_get_private() several times to > get several distinct DBusConnection objects. This is usually the wrong > thing to do, but is an option if you have specialized requirements. > If you do this, beware that there are no ordering guarantees between > different DBusConnection objects: if two messages A and B are sent, > then one DBusConnection might see both A and B before a second > DBusConnection has seen A. > > Consider using a more user-friendly (and thread-safe) D-Bus implementation > such as GLib's GDBus. The reference implementation, libdbus, has this > statement on the first page of its documentation: > > This manual documents the *low-level* D-Bus C API. **If you use > this low-level API directly, you're signing up for some pain.** > > In GDBus, the equivalent of dbus_bus_get() is g_bus_get() > or g_bus_get_sync(), the equivalent of DBusConnection is > GDBusConnection, the equivalent of dbus_bus_request_name() is > g_bus_own_name_on_connection(), and the closest equivalent for > g_bus_get_private() is g_dbus_connection_new_for_address[_sync]() > with the G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT and > G_DBUS_CONNECTION_FLAGS_MESSAGE_BUS_CONNECTION flags. Similar comments > apply about the ability to own more than one well-known name per > GDBusConnection. > > > com.app.bluetooth > > com.ap.wifi > > com.ap.ap > > I suspect you don't own <a href="http://app.com" rel="noreferrer" target="_blank">app.com</a> (owned by Gannett Media Technologies > International, according to whois) and <a href="http://ap.com" rel="noreferrer" target="_blank">ap.com</a> (owned by Audio Precision, > according to web page content). Please choose a namespace starting with > a reversed domain name that your organisation controls. > > smcv > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > dbus mailing list > <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> > <a href="https://lists.freedesktop.org/mailman/listinfo/dbus" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/dbus</a> > > > ------------------------------ > > End of dbus Digest, Vol 158, Issue 6 > ************************************ > -------------- next part -------------- An HTML attachment was scrubbed... URL: <<a href="https://lists.freedesktop.org/archives/dbus/attachments/20180918/d3d48945/attachment-0001.html" rel="noreferrer" target="_blank">https://lists.freedesktop.org/archives/dbus/attachments/20180918/d3d48945/attachment-0001.html</a>> ------------------------------ Message: 2 Date: Tue, 18 Sep 2018 13:22:51 +1200 From: Lawrence D'Oliveiro <<a href="mailto:ldo@geek-central.gen.nz" target="_blank">ldo@geek-central.gen.nz</a>> To: <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> Subject: Re: Multiple connections to dbus-daemon in single appication Message-ID: <<a href="mailto:20180918132251.34490d17@theon.geek-central.gen.nz" target="_blank">20180918132251.34490d17@theon.geek-central.gen.nz</a>> Content-Type: text/plain; charset=US-ASCII On Tue, 18 Sep 2018 10:00:21 +0900, dtdang wrote: > I would like to register in three separated connections since client > will send command with option (like using dbus-send with > option --dest=com.app.bluetooth or --dest=com.ap.wifi or > --dest=com.ap.ap). So I want to open three separated connection with > specific name in three threads to listen from client. You can do all that on one connection. ------------------------------ Subject: Digest Footer _______________________________________________ dbus mailing list <a href="mailto:dbus@lists.freedesktop.org" target="_blank">dbus@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/dbus" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/dbus</a> ------------------------------ End of dbus Digest, Vol 158, Issue 7 ************************************ </blockquote></div></div></div>