Icecast - May 2015 - Current Listeners count wrong for HTML Audio on Android?

Dear all,

The problem I am facing, is that one of my clients is concerned about data
usage.

My client monitors the current number of listeners in  the Mount Point list
streams.greenhost.nl:8080.

 

The case is, when I start a stream from an HTML app on an Android device, I
can see two listeners being added to "Current Listeners". This
peculiar
behaviour only occurs on Android, not on laptops or iPhones.

 

The code I use concerns a simple HTML Audio object:

var audioObj = new Audio();

audioObj.src = aValidMountpoint;

audioObj.play();

 

I tested these lines and it appears that for Android a "Current
Listener" is
added on both the second and the third line.

 

I can't imagine there really are two streams streaming at the same time, as
it is only one object that arranges this.

 

Is this a known issue? Any workaround or any way to prove my client that
there is only one stream playing?

 

Regards,

 

Klaas van der Linden

-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.xiph.org/pipermail/icecast/attachments/20150503/a45ca393/attachment.htm>

Klaas,
You will find that there often are multiple connections, particularly for
HTML5 audio elements in WebKit browsers as they probe to see if the media
is seekable or not.  The multiple connections die out soon after starting
though, leaving you one connection for actually streaming the audio.

You can verify this yourself with a packet sniffer such as Wireshark.  It
wouldn't hurt to double check to make sure your application isn't really
using all that data.

 *Brad Isbell // AudioPump, Inc.*
brad at audiopump.co
Skype: bradisbell
Phone: +1 312-488-4680

On Sat, May 2, 2015 at 6:59 PM, Klaas van der Linden <
vanderlinden at culturalservices.nl> wrote:
> Dear all,
>
> The problem I am facing, is that one of my clients is concerned about data
> usage.
>
> My client monitors the current number of listeners in  the Mount Point
> list streams.greenhost.nl:8080.
>
>
>
> The case is, when I start a stream from an HTML app on an Android device,
> I can see two listeners being added to ?Current Listeners?. This peculiar
> behaviour only occurs on Android, not on laptops or iPhones.
>
>
>
> The code I use concerns a simple HTML Audio object:
>
> var audioObj = new Audio();
>
> audioObj.src = aValidMountpoint;
>
> audioObj.play();
>
>
>
> I tested these lines and it appears that for Android a ?Current Listener?
> is added on both the second and the third line.
>
>
>
> I can?t imagine there really are two streams streaming at the same time,
> as it is only one object that arranges this.
>
>
>
> Is this a known issue? Any workaround or any way to prove my client that
> there is only one stream playing?
>
>
>
> Regards,
>
>
>
> Klaas van der Linden
>
> _______________________________________________
> Icecast mailing list
> Icecast at xiph.org
> http://lists.xiph.org/mailman/listinfo/icecast
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.xiph.org/pipermail/icecast/attachments/20150502/52ff5535/attachment.htm>

Thanks for this information, but the two connections do not die out when using
my player in the Android browser. In fact they even stay when the Audio.src is
set to some invalid string.

 

You can observe this here:
http://concertzender.nl/wp-content/themes/cz-theme/App/test/ , by clicking one
of the large icons - and then monitor the corresponding stream here:
http://streams.greenhost.nl:8080/

 

(The player doesn?t work on safari (windows/mac) or firefox, probably because
mp3 is not supported they fail to register the ?canplay? event or something like
that ? I?m not sure. I got it to work on IE, Opera, Chrome and iPhone Safari and
on Android.)

 

Any suggestions as to how to debug this?

 

 

From: icecast-bounces at xiph.org [mailto:icecast-bounces at xiph.org] On Behalf
Of Brad Isbell
Sent: zondag 3 mei 2015 2:46
To: Icecast streaming server user discussions
Subject: Re: [Icecast] Current Listeners count wrong for HTML Audio on Android?

 

Klaas,

You will find that there often are multiple connections, particularly for HTML5
audio elements in WebKit browsers as they probe to see if the media is seekable
or not.  The multiple connections die out soon after starting though, leaving
you one connection for actually streaming the audio.

 

You can verify this yourself with a packet sniffer such as Wireshark.  It
wouldn't hurt to double check to make sure your application isn't really
using all that data.





  <http://audiopump.co/img/audiopump-logo-64px.png> 

Brad Isbell // AudioPump, Inc.
brad at audiopump.co
Skype: bradisbell
Phone: +1 312-488-4680

 

On Sat, May 2, 2015 at 6:59 PM, Klaas van der Linden <vanderlinden at
culturalservices.nl> wrote:

Dear all,

The problem I am facing, is that one of my clients is concerned about data
usage.

My client monitors the current number of listeners in  the Mount Point list
streams.greenhost.nl:8080.

 

The case is, when I start a stream from an HTML app on an Android device, I can
see two listeners being added to ?Current Listeners?. This peculiar behaviour
only occurs on Android, not on laptops or iPhones.

 

The code I use concerns a simple HTML Audio object:

var audioObj = new Audio();

audioObj.src = aValidMountpoint;

audioObj.play();

 

I tested these lines and it appears that for Android a ?Current Listener? is
added on both the second and the third line.

 

I can?t imagine there really are two streams streaming at the same time, as it
is only one object that arranges this.

 

Is this a known issue? Any workaround or any way to prove my client that there
is only one stream playing?

 

Regards,

 

Klaas van der Linden


_______________________________________________
Icecast mailing list
Icecast at xiph.org
http://lists.xiph.org/mailman/listinfo/icecast

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.xiph.org/pipermail/icecast/attachments/20150505/5008c935/attachment.htm