[Icecast] Using Icecast relay function with dynamic IP at remote source end

David Saunders abitar.com at gmail.com
Thu Apr 20 03:47:27 UTC 2017


ok let see if I can translate it to broadcaster terms for ya :)

A icecast server can be set up to accept direct source connection. ie dark
ice( which i do agree runs better on the  machine where icecast server is.
) I do use it to trans-code the mount to different encoding.

THe icecast server can also set up as a relay, where it pulls in from the
another server.  Primary used to pull the stream from a icecast server.
Then make it available to be acceded by clients from it mounts.

But, BUTT is designed to stream to an icecast server, and does very well.


http://icecast.org/docs/icecast-2.4.1/relaying.html

Master is the source server (where the source comes from) ad Slave is the
relay. THe connection is initiated by the slave to the master.

BUTT ---MASTER ========= SLAVE ===== Clients
--- can be local host or lan or wan  private or public

== is public connections wans/lans/...

If you need more bandwidth you can setup/rent other SLAVEs on other
networks to augment you bandwidth.

It lot easier to have 1 master and bunch of slaves to spreading the
bandwidth out,  It easier to maintain a single master with many mounts + it
easy to trace problems down with sources going to a common Master.

I tend to diverge from your question a bit.   But, your encoder should work
find with broadcaster to the icecast server by itself. I have had it done
for the past 10 years. The only real issue s when you encode the stream
higher then what he bandwidth can handle.  remember the source clients use
the UPLOAD speed of you connection and the client use the UPLOAD speeds. In
the USA it no uncommon to have uploads speeds to be far slower then you can
download. Also I am talking about how fast the connection is not how much
data you have in a month. It get really confusing when you talk about
bandwidth, since they call both bandwidths.One is how big your pipe is and
other how much you get through the pipe in a given time.

Lot of the extra above fore those reading this and nee d a little more
clarity :)
David


SLAVE looks a the master waiting for something to do. When it sees the
mount it relays it.



On Wed, Apr 19, 2017 at 7:33 PM, Jack Elliott <thatjackelliott at kpov.org>
wrote:

> *I made an error, I swapped two diagrams, it should be this:*
>
> Here's how I've been doing it:
>
> BUTT ===> WAN ===> Icecast server
>
> I thought I might try this instead:
>
> BUTT --> localhost Icecast server ===> WAN ===> Icecast server
>
> --
> That Jack Elliott(541) 848 7021 <(541)%20848-7021>
> KPOV 88.9 FM High Desert Community radio
> Producer, The Wednesday Point
> Host, The Sunday Classics
>
> On 4/19/2017 4:00 PM, Jack Elliott wrote:
>
> Hi David, I don't think we will necessarily be on wifi, I'm sorry if I
> implied that. There are a couple of events each year when we have to use
> wifi, but for those I have a dedicated access point running at close to 1
> watt connected directly to our ISP's network.
>
> Okay, I was told over on the Darkice listserv that using Darkice > WAN >
> Icecast is not very reliable, and my testing supported that statement. They
> said that Darkice is an encoder, and Icecast is a transporter. Icecast,
> they said, is very reliable, Darkice is a good encoder but not too great as
> a transporter.
>
> I've been using BUTT as the encoder at the remote (audio source) end, and
> sending the stream over the WAN to the Icecast server at the station
> building. BUTT, I found, is more reliable than Darkice at the encoding end.
>
> Here's how I've been doing it:
>
> BUTT --> localhost Icecast server ===> WAN ===> Icecast server
>
> I thought I might try this instead:
>
> BUTT ===> WAN ===> Icecast server
>
> Now here I want to avoid using incorrect terminology. The way I am using
> the word "remote" is how it is used in broadcast: if a crew leaves the
> building to broadcast an event occurring outside the station somewhere,
> they are doing a remote.
>
> So in my case, the "remote" is at the music festival - my audio source.
>
> So when you write, "The relay easiest to configured in a pull
> configuration. Where the setting are setup on the remote server." -- is it
> correct for me to interpret that to mean that I can leave the settings on
> the station computer's server alone, just set up the server in my remote
> kit to "pull" from the station's server?
>
> I am puzzled by "pull," since I am wanting to send audio from me to the
> station, but that's pulling?
>
> --
> That Jack Elliott(541) 848 7021 <(541)%20848-7021>
> KPOV 88.9 FM High Desert Community radio
> Producer, The Wednesday Point
> Host, The Sunday Classics
>
> On 4/19/2017 10:26 AM, David Saunders wrote:
>
> Hey,
>
>   The relay easiest to configured in a pull configuration. Where the
> setting are setup on the remote server.
>
>    Since the client is on WiFi, you will have lots of issues streaming due
> to the ever changing wifi environment.  My suggestion is source the stream
> at the lowest settings for encoding you can live with, This will keep the
> bandwidth down and less likely burp on you.
>
>   We do have clients who use WiFi and set the the encoding to smallest
> size for the content being recorded. Most of the time since its voice
> content we really don't have to go super high on the encoding.
>
>  I have set up the relay to supplement our bandwidth when we think it will
> be over the limit.  Just remember you need to give the listeners the remote
> server connection info not the local server.
>
>   Why it would be better? not sure why, but if the icecast server is set
> with a larger buffer, it will buffer thru the disconnects of the source.
>
> David.
>
> On Wed, Apr 19, 2017 at 11:02 AM, Marvin Scholz <epirat07 at gmail.com>
> wrote:
>
>>
>>
>> On 19 Apr 2017, at 16:20, Jack Elliott wrote:
>>
>> For our community radio station's live music festivals broadcasts, we set
>>> up a small broadcast studio at the festival's venue, and use B.U.T.T. to
>>> send a stream to an Icecast server located at the radio station's building.
>>>
>>> REMOTE LOCATION                        STATION BUILDING
>>> B.U.T.T.         ======= WAN =======>> ICECAST SERVER
>>>
>>> It's pretty reliable, though BUTT does sometimes lose connection,
>>> probably due to network congestion.
>>>
>>> The folks on the Darkice listserv claim that using Icecast to do the
>>> sending provides a more reliable connection. So I want to try this idea:
>>>
>>> REMOTE LOCATION                                    STATION BUILDING
>>> B.U.T.T. --> Icecast on localhost  ==== WAN ====>> ICECAST SERVER
>>>
>>
>> I am not sure how this could be more reliable than BUTT alone.
>>
>>
>>> I'm finding the terminology for setting up a relay (on
>>> http://icecast.org/docs/icecast-2.4.0/config-file.html#relay) to be a
>>> bit confusing and could use some help.
>>>
>>> I believe I want to set up a Specific Mountpoint Relay. It's where the
>>> IP addresses get plugged in that I need some clarification. The IP address
>>> for the building is static, but the IP address for the remote server is
>>> unknown before every festival, and may be dynamic.
>>>
>>> The documentation says that for the <relay> section of the xml, we have
>>> a <server>127.0.0.1</server> setting. And that is described as "This is the
>>> IP for the server which contains the mountpoint to be relayed."
>>>
>>> I can't tell whether the <relay? section is on the remote server, in
>>> which case we only need to put the static IP of the building in the
>>> <server> section, or whether the <relay> section is on the building's
>>> server, in which case we need to know ahead of time what our remote IP will
>>> be, and hope it doesn't change during the festival.
>>>
>>> I hope this question makes sense. My confusion is clearly because I am
>>> unclear which server (remote or building) the <relay> section applies to.
>>>
>>> --
>>> That Jack Elliott
>>> (541) 848 7021
>>> KPOV 88.9 FM High Desert Community radio
>>> Producer, The Wednesday Point
>>> Host, The Sunday Classics
>>> _______________________________________________
>>> Icecast mailing list
>>> Icecast at xiph.org
>>> http://lists.xiph.org/mailman/listinfo/icecast
>>>
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