Re: nm_device_wifi_get_access_point returns an invalid number of APs.

[Dan Williams <dcbw redhat com>]

On Thu, 2010-08-12 at 17:56 -0700, pan son wrote:
> I am running 0.8 Network Manager on my ubuntu 10.04.
> 
> I see that the Network Manager applet generally refreshes its list (or
> calls nm_device_wifi_get_access_points) at most once an hour.
> (?applet-device-wifi.c:1017)

It usually only calls nm_device_wifi_get_access_points() once at
startup, and then relies on the added/removed signals.  I'll do some
more testing and see if I can reproduce the issue.

Dan

> Thanks,
> Vink
> 
> 
> On Thu, Aug 12, 2010 at 3:33 PM, Dan Williams <dcbw redhat com> wrote:
>         On Wed, 2010-08-11 at 23:18 -0700, pan son wrote:
>         > Thanks Dan,
>         >
>         > Nope, it does not confirm with the output of nm-tool. The
>         NMA applet
>         > and nm-tool both behave same.
>         >
>         > I call nm_device_wifi_get_access_points everytime I get a
>         > "access-point-added" or "access-point-removed" and I see a
>         lots of APs
>         > with ssid /or bssid? as (hidden), which is different from
>         the output
>         > of nm-tool.
>         
>         
>         What specific version of NetworkManager are you using?
>         
>         Dan
>         
>         
>         > My piece of code is pretty small, and it is straight forward
>         to fetch
>         > the list of Access Points.
>         >
>         > Thanks,
>         > Vink
>         >
>         >
>         >
>         > On Wed, Aug 11, 2010 at 10:32 AM, Dan Williams
>         <dcbw redhat com>
>         > wrote:
>         >
>         >         On Tue, 2010-08-10 at 20:22 -0700, pan son wrote:
>         >         > Hi All,
>         >         > I am writing my UI client to the Network Manager.
>         >         > I periodically call the
>         nm_device_wifi_get_access_points
>         >         after every
>         >         > 60 seconds. What I see is everytime the number of
>         APs
>         >         returned are
>         >         > more then the previous call and most of them have
>         ssid as
>         >         (hidden). I
>         >         > also see lots of signal "access-point-added", but
>         I dont see
>         >         anything
>         >         > happening on the NMA applet as the same time.
>         >         >
>         >         > I dont see the same thing on NMA applet. Do I need
>         to ref/
>         >         unref the
>         >         > NMAccessPoints everytime I refresh my screen.
>         >         >
>         >         > I am newbie and am just getting the hold of
>         glib-gobject
>         >         system. Any
>         >         > help is very much appreciated.
>         >
>         >
>         >         The objects returned by that call are owned by
>         libnm-glib, so
>         >         you only
>         >         need to unreference them if you ever explicitly
>         called
>         >         g_object_ref() on
>         >         them at any point.
>         >
>         >         When you see the problem, does the #  of access
>         points
>         >         returned by
>         >         nm_device_wifi_get_access_points() correspond to the
>         output of
>         >         'nm-tool'?  I took a quick look at the code and it
>         seems to be
>         >         doing the
>         >         right thing, provided that NetworkManager is
>         correctly aging
>         >         the access
>         >         points and sending the AccessPointRemoved signal
>         when they are
>         >         removed
>         >         from NM's internal list.
>         >
>         >         Dan
>         >
>         >
>         >
>         
>         
>         
>