<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=big5"> <META content="MSHTML 6.00.6000.16640" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#c7edcc> <DIV><FONT face=Arial>Hi,</FONT></DIV> <DIV><FONT face=Arial>I add a dbus_bus_request_name(dbconn, THE_NAME_TO_REQUEST, DBUS_NAME_FLAG_REPLACE_EXISTING, &dberr) in the sender code</FONT></DIV> <DIV><FONT face=Arial>, and it seems that the sending request can be received by the dbus-daemon and passed to receiver every time. Why is that ? </FONT></DIV> <DIV><FONT face=Arial>By the way, I first use the same name as the receiver(running on the background) has requested, and both are set with the flag DBUS_NAME_FLAG_REPLACE_EXISTING only.</FONT></DIV> <DIV><FONT face=Arial>It still works. Why is that ? Shouldn't any confliction occur if I didn't apply <A class=el title="Allow another service to become the primary owner if requested." href="http://dbus.freedesktop.org/doc/api/html/group__DBusShared.html#g584a006983ab415772d4d14885cc5c29"><FONT face=新細明體>DBUS_NAME_FLAG_ALLOW_REPLACEMENT</FONT></A> ?</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>BR,</FONT></DIV> <DIV><FONT face=Arial>Edison Lin</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt 新細明體">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt 新細明體; font-color: black"><B>From:</B> <A title=edison_lin@gemtek.com.tw href="mailto:edison_lin@gemtek.com.tw">Edison_lin-林俊翰</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>To:</B> <A title=ernaveenverma@gmail.com href="mailto:ernaveenverma@gmail.com">Naveen Verma</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Cc:</B> <A title=dbus@lists.freedesktop.org href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Sent:</B> Wednesday, May 27, 2009 3:29 PM</DIV> <DIV style="FONT: 10pt 新細明體"><B>Subject:</B> Re: Why sometimes the signal/method call can't be sent successfully</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial>Hi,</FONT></DIV> <DIV><FONT face=Arial>I find another case that dbus-daemon doesn't notice the sending request at all.</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>BR,</FONT></DIV> <DIV><FONT face=Arial>Edison Lin</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt 新細明體">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt 新細明體; font-color: black"><B>From:</B> <A title=edison_lin@gemtek.com.tw href="mailto:edison_lin@gemtek.com.tw">Edison_lin-林俊翰</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>To:</B> <A title=ernaveenverma@gmail.com href="mailto:ernaveenverma@gmail.com">Naveen Verma</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Cc:</B> <A title=dbus@lists.freedesktop.org href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Sent:</B> Wednesday, May 27, 2009 11:35 AM</DIV> <DIV style="FONT: 10pt 新細明體"><B>Subject:</B> Re: Why sometimes the signal/method call can't be sent successfully</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial>Hi,</FONT></DIV> <DIV><FONT face=Arial>The attached files are the logs after open verbose mode. After comparing these two logs I found one place different : After removing the message from outgoing queue, for failed case the dispatch status always shows complete, as for the successful case there's always data remains. You could find this after the verbose message "_dbus_connection_send_preallocated_and_unlock middle"</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>For your reference,</FONT></DIV> <DIV><FONT face=Arial>BR,</FONT></DIV> <DIV><FONT face=Arial>Edison</FONT></DIV> <DIV><FONT face=Arial></FONT><FONT face=Arial></FONT> </DIV> <DIV>----- Original Message ----- </DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt 新細明體; font-color: black"><B>From:</B> <A title=edison_lin@gemtek.com.tw href="mailto:edison_lin@gemtek.com.tw">Edison_lin-林俊翰</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>To:</B> <A title=ernaveenverma@gmail.com href="mailto:ernaveenverma@gmail.com">Naveen Verma</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Cc:</B> <A title=dbus@lists.freedesktop.org href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Sent:</B> Tuesday, May 26, 2009 8:23 PM</DIV> <DIV style="FONT: 10pt 新細明體"><B>Subject:</B> Re: Why sometimes the signal/method call can't be sent successfully</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial>Hi,</FONT></DIV> <DIV><FONT face=Arial>I think it's probably not my sender's fault, because sometimes the sending request seems to disappear</FONT></DIV> <DIV><FONT face=Arial>through observing dbus-monitor even if I use the following command:</FONT></DIV> <DIV><FONT face=Arial><STRONG>dbus-send --session --type=signal --dest=com.wiley.test / com.wiley.test.TestSignal string::"rock"</STRONG></FONT></DIV> <DIV><FONT face=Arial>Any idea is appreciated !</FONT></DIV> <DIV><STRONG><FONT face=Arial></FONT></STRONG> </DIV> <DIV><FONT face=Arial>BR,</FONT></DIV> <DIV><FONT face=Arial>Edison Lin</FONT></DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt 新細明體">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt 新細明體; font-color: black"><B>From:</B> <A title=edison_lin@gemtek.com.tw href="mailto:edison_lin@gemtek.com.tw">Edison_lin-林俊翰</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>To:</B> <A title=ernaveenverma@gmail.com href="mailto:ernaveenverma@gmail.com">Naveen Verma</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Cc:</B> <A title=dbus@lists.freedesktop.org href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Sent:</B> Tuesday, May 26, 2009 6:33 PM</DIV> <DIV style="FONT: 10pt 新細明體"><B>Subject:</B> Re: Why sometimes the signal/method call can't be sent successfully</DIV> <DIV><BR></DIV> <DIV><FONT face=Arial>Hi </FONT><FONT face=新細明體>Naveen,</FONT></DIV> <DIV>I'm looking at session bus, and I'm using low level C API to do this. The attached is the source code of the sender, do I miss something ?</DIV> <DIV> </DIV> <DIV><FONT face=Arial>Appreciate,</FONT></DIV> <DIV><FONT face=Arial>Edison Lin</FONT></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt 新細明體">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt 新細明體; font-color: black"><B>From:</B> <A title=ernaveenverma@gmail.com href="mailto:ernaveenverma@gmail.com">Naveen Verma</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>To:</B> <A title=Edison_Lin@gemtek.com.tw href="mailto:Edison_Lin@gemtek.com.tw">Edison_Lin-林俊翰</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Cc:</B> <A title=dbus@lists.freedesktop.org href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</A> </DIV> <DIV style="FONT: 10pt 新細明體"><B>Sent:</B> Tuesday, May 26, 2009 6:02 PM</DIV> <DIV style="FONT: 10pt 新細明體"><B>Subject:</B> Re: Why sometimes the signal/method call can't be sent successfully</DIV> <DIV><BR></DIV><BR> <DIV class=gmail_quote><BR> <BLOCKQUOTE class=gmail_quote style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid"> <DIV bgcolor="#c7edcc"> <DIV><FONT face=Arial>Hi,</FONT></DIV> <DIV><FONT face=Arial>I used the dbus-monitor to monitor the status of message bus, and I found that sometimes after sending a signal/method call and flush the connection, nothing happened(I meant the information about the sending action) in the description produced from dbus-monitor. After several times of retries then it shows the sending message, at the same time the receiver got the request. I'm wondering the reason causing this ? Is it a usual case so that I have to establish a mechanism to ensure the delivering of request ?</FONT></DIV></DIV></BLOCKQUOTE> <DIV><BR>-This is strange, I am also using dbu-monitor quit a lot but never face this issue. Are you looking at system bus or session bus? <BR></DIV> <BLOCKQUOTE class=gmail_quote style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid"> <DIV bgcolor="#c7edcc"> <DIV><FONT face=Arial></FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Appreciate,</FONT></DIV> <DIV><FONT face=Arial>Edison Lin</FONT></DIV></DIV></BLOCKQUOTE> <DIV><BR>-Br<BR>Naveen<BR> <BR></DIV> <BLOCKQUOTE class=gmail_quote style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid"> <DIV bgcolor="#c7edcc"> <DIV><FONT face=Arial></FONT></DIV></DIV><BR>_______________________________________________<BR>dbus mailing list<BR><A href="mailto:dbus@lists.freedesktop.org">dbus@lists.freedesktop.org</A><BR><A href="http://lists.freedesktop.org/mailman/listinfo/dbus" target=_blank>http://lists.freedesktop.org/mailman/listinfo/dbus</A><BR><BR></BLOCKQUOTE></DIV><BR></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>