<div dir="ltr"><div dir="ltr">Many thanks Lawrence & Simon,<div> </div><div>But you might misunderstand my point. </div><div> </div><div>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.</div><div> </div><div>So is it possible that an application can register multiple separated dbus-connections to dbus-daemon ? Three separated dbus connections should operate independently.</div><div> </div><div>You are right about I am not owning <a href="http://app.com">app.com</a> or <a href="http://ap.com">ap.com</a>. It just my example. Many thanks for correcting it. <div class="gmail_quote"><div dir="ltr">On Mon, Sep 17, 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:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);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. 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 ************************************ </blockquote></div></div></div></div>