Mailing List Archive: MythTV: Users

Frontend Control Socket

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imntreal at gmail

Jul 31, 2012, 4:34 PM

Post #1 of 4 (352 views)
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Frontend Control Socket

According to ticket #10654, the current expected functionality of the
Frontend Control Socket which would allow you to control a frontend
across the network is to bind to the IP address set as the local
backend server. What if the machine is a frontend only, and is
connecting to a remote backend? How is it supposed to bind to a
socket, so that I can actually connect to it? It defaults to the
loopback address, but that is basically useless. I would pose the
question in the ticket, but it's locked.

Thanks,
=-Jameson
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raymond at wagnerrp

Jul 31, 2012, 5:39 PM

Post #2 of 4 (319 views)
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Re: Frontend Control Socket [In reply to]

On 7/31/2012 19:34, Jameson wrote:
> According to ticket #10654, the current expected functionality of the
> Frontend Control Socket which would allow you to control a frontend
> across the network is to bind to the IP address set as the local
> backend server. What if the machine is a frontend only, and is
> connecting to a remote backend? How is it supposed to bind to a
> socket, so that I can actually connect to it? It defaults to the
> loopback address, but that is basically useless. I would pose the
> question in the ticket, but it's locked.

The defaults only exist if you go into mythtv-setup and configure them.
If you never run it, or you run it and force those fields to be blank,
the frontend will decide on its own where it should listen, which
currently means every address within one of the three private network
address blocks as defined by RFC1918. That means:

10.0.0.0/8
172.16.0.0/12
192.168.0.0/16

http://tools.ietf.org/html/rfc1918#page-4

That last one is likely where you will fall, as nearly ever consumer
router I've ever seen uses that for its DHCP server.
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imntreal at gmail

Aug 1, 2012, 6:31 AM

Post #3 of 4 (304 views)
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Re: Frontend Control Socket [In reply to]

On Tue, Jul 31, 2012 at 8:39 PM, Raymond Wagner <raymond [at] wagnerrp> wrote:
> The defaults only exist if you go into mythtv-setup and configure them. If
> you never run it, or you run it and force those fields to be blank, the
> frontend will decide on its own where it should listen

Ahh... I see. This is my first ever FE-only box. I didn't realize
that having local backend blank was a valid config. Thanks.
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raymond at wagnerrp

Aug 1, 2012, 6:59 AM

Post #4 of 4 (303 views)
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Re: Frontend Control Socket [In reply to]

On 8/1/2012 09:31, Jameson wrote:
> On Tue, Jul 31, 2012 at 8:39 PM, Raymond Wagner <raymond [at] wagnerrp> wrote:
>> The defaults only exist if you go into mythtv-setup and configure them. If
>> you never run it, or you run it and force those fields to be blank, the
>> frontend will decide on its own where it should listen
>
> Ahh... I see. This is my first ever FE-only box. I didn't realize
> that having local backend blank was a valid config. Thanks.

That field only needs to be populated if you are running a local
backend, and when I say "local", I mean one running the same machine
profile as is in use by the mythtv-setup instance. The machine profile
currently defaults to the machine's hostname, however that can be
overridden with the LocalHostName value, found in ~/.mythtv/mysql.txt in
0.25 or previous, or ~/.mythtv/config.xml for 0.26 and later.
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