Snapserver - enable HTTP Json RPC (HTTP POST and websockets)

Mr.Tiptop · March 29, 2021 at 4:48 PM

Hello is there any plan to enable this feature in Snapserver?

Code

# HTTP RPC ####################################################################
#
[http]
# enable HTTP Json RPC (HTTP POST and websockets)
#enabled = true

# address to listen on, can be specified multiple times
# use "0.0.0.0" to bind to any IPv4 address or :: to bind to any IPv6 address
# or "127.0.0.1" or "::1" to bind to localhost IPv4 or IPv6, respectively
# use the address of a specific network interface to just listen to and accept
# connections from that interface
#bind_to_address = 0.0.0.0

# which port the server should listen to
#port = 1780

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**heitbaum** · March 29, 2021 at 10:47 PM

Hi Mr.Tiptop could you share the background to what you are trying to achieve?

A few ways to complete this, edit the file, update the addon settings system to allow user config, turn it on for all. All have pluses and minuses?

Mr.Tiptop · March 30, 2021 at 8:30 AM

Hello, thanks for the reply.. So to my knowledge the snapserver addon seems to be a light version (no full config file) - again to my knowledge. So if there is a way i can edit the addon config where can i find this file. the normal snapserver.conf is in /etc/snserver.conf, but this file does not exist in libreelec as its an addon.. Sorry if i am not explaining properly.

Currently port 1704/1704 are open. i would like to enable 1780 http JSon RPC so that i can install snapweb on my server.. this will allow me to control all my snapclients via web interface instead of CLI

**heitbaum** · March 31, 2021 at 9:25 AM

In looking at the config here is what you will need to update / change:

- Update the bin/snapserver.start file adding the option “--http.enabled 1” to the snapserver startup line, the addon files can be found in “/storage/.kodi/addons/service.snapserver“.

For bonus points: update settings.xml and strings.po using variables to enable / disable http. You could then submit this as a LibreELEC PR via github

Help details from snapserver

Code

service.snapserver/bin # ./snapserver -hh
Allowed options:
  -h, --help                          Produce help message, use -hh to show options from config file
  -v, --version                       Show version number
  -d, --daemon [=arg(=0)]             Daemonize
                                      optional process priority [-20..19]
  -c, --config arg (=/etc/snapserver.conf)
                                      path to the configuration file

Overridable config file options:
  --server.threads arg (=-1)          number of server threads
  --server.pidfile arg (=/var/run/snapserver/pid)
                                      pid file when running as daemon
  --server.user arg (=snapserver)     the user to run as when daemonized
  --server.group [=arg(=)]            the group to run as when daemonized
  --server.datadir [=arg(=)]          directory where persistent data is stored
  --http.enabled arg (=1)             enable HTTP Json RPC (HTTP POST and websockets)
  --http.port arg (=1780)             which port the server should listen on
  --http.bind_to_address arg (=0.0.0.0)
                                      address for the server to listen on
  --http.doc_root [=arg(=)]           serve a website from the doc_root location
  --tcp.enabled arg (=1)              enable TCP Json RPC)
  --tcp.port arg (=1705)              which port the server should listen on
  --tcp.bind_to_address arg (=0.0.0.0)
                                      address for the server to listen on
  --stream.bind_to_address arg (=0.0.0.0)
                                      address for the server to listen on
  --stream.port arg (=1704)           which port the server should listen on
  --stream.stream arg (=pipe:///tmp/snapfifo?name=default)
                                      Deprecated: use stream.source
  --stream.source arg (=pipe:///tmp/snapfifo?name=default)
                                      URI of the PCM input stream.
                                      Format: TYPE://host/path?name=NAME
                                      [&codec=CODEC]
                                      [&sampleformat=SAMPLEFORMAT]
  --stream.sampleformat arg (=48000:16:2)
                                      Default sample format
  --stream.codec arg (=flac)          Default transport codec
                                      (flac|ogg|opus|pcm)[:options]
                                      Type codec:? to get codec specific options
  --stream.stream_buffer arg (=20)    Default stream read chunk size [ms], deprecated, use stream.chunk_ms instead
  --stream.chunk_ms arg (=20)         Default stream read chunk size [ms]
  --stream.buffer arg (=1000)         Buffer [ms]
  --stream.send_to_muted arg (=0)     Send audio to muted clients
  --logging.sink arg                  log sink [null,system,stdout,stderr,file:<filename>]
  --logging.filter arg (=*:info)      log filter <tag>:<level>[,<tag>:<level>]* with tag = * or <log tag> and level = [trace,debug,info,notice,warning,error,fatal]

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Mr.Tiptop · March 31, 2021 at 11:47 AM

So i have managed to do some of what you suggested, but i cant edit advancedsettings.xml or settings.xml as it say file system readonly. i am also struggling to get http service up.. naturally in can browse to my box on port 8080, but its not binding port 1780 as i have specified in the snapserver config.

**heitbaum** · March 31, 2021 at 12:17 PM

Can you run the following:

Code

Pastebinit snapserver.start <—- and shard the url
systemctl restart kodi

These are the files of interest. You don’t need to edit the other files (just the ones in .Kodi/addons/service.snapserver

Code

nuc11:~/.kodi/addons/service.snapserver # find . -type f
./system.d/service.snapserver.service
./config/pulseaudio.conf
./settings-default.xml
./default.py
./addon.xml
./bin/snapserver
./bin/shairport-sync
./bin/snapserver.start.  <——- edit this for http (variable driven for bonus points)
./resources/language/English/strings.po <—— need to add the translation in this file
./resources/settings.xml <—— this is to change the settings file to allow settings page to enable/disable http
./resources/icon.png
./resources/fanart.png

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and “netstat -ant | grep LISTEN” will allow you to check if port 1780 is actually LISTENing

Mr.Tiptop · March 31, 2021 at 1:02 PM

http://ix.io/2UDr

strings.po looks like this:

Code

# Kodi Media Center language file
# Addon Name: snapserver
# Addon id: service.snapclient
# Addon Provider: Team LibreELEC
msgid ""
msgstr ""

msgctxt "#30000"
msgid "Configuration"
msgstr ""

msgctxt "#30001"
msgid "Server port"
msgstr ""

msgctxt "#30002"
msgid "Control port"
msgstr ""

msgctxt "#30003"
msgid "Priority"
msgstr ""

msgctxt "#30004"
msgid "Stream"
msgstr ""

msgctxt "#30005"
msgid "HTTP Json RPC Service"
msgstr ""

msgctxt "#30006"
msgid "HTTP Json RPC Port"
msgstr ""

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netstat -ant | grep LISTEN

Code

tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:36666           0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:445             0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:9090            0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:36003           0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:4713            0.0.0.0:*               LISTEN      
tcp        0      0 0.0.0.0:139             0.0.0.0:*               LISTEN      
tcp        0      0 :::111                  :::*                    LISTEN      
tcp        0      0 :::8080                 :::*                    LISTEN      
tcp        0      0 :::22                   :::*                    LISTEN      
tcp        0      0 :::36666                :::*                    LISTEN      
tcp        0      0 :::445                  :::*                    LISTEN      
tcp        0      0 :::9090                 :::*                    LISTEN      
tcp        0      0 :::1704                 :::*                    LISTEN      
tcp        0      0 :::1705                 :::*                    LISTEN      
tcp        0      0 :::4713                 :::*                    LISTEN      
tcp        0      0 :::139                  :::*                    LISTEN

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does not seem to be binding on port 1780

Mr.Tiptop · March 31, 2021 at 1:25 PM

just btw, i am running

NAME="LibreELEC"

VERSION="9.2.6"

ID="libreelec"

VERSION_ID="9.2"

PRETTY_NAME="LibreELEC (official): 9.2.6"

it seems that the snapserver version is old..

snapserver v0.15.0.

looking at the addons from repo for this version of LE it looks to be old one..

<a href="service.snapserver/">service.snapserver/</a> 17-Oct-2019 15:40

http://addons.libreelec.tv/9.2.0/RPi2/arm…r-9.2.0.102.zip

**heitbaum** · March 31, 2021 at 5:16 PM

What is in the settings file?

- ./resources/settings

Note: I did my tests with LE10b1

But Lets try and check if 9.2.x will work

Does snapserver -hh describe the http options?

in the Kodi addons settings application (are both of your new options showing up? And set as 1 and 1780 respectively?

Remembering that either a Kodi restart or ensuring the addon is restarted once making the changes is required.

Mr.Tiptop · April 1, 2021 at 9:48 AM

So it seems that version v0.15.0 does not have this feature or options in them yet :(. so it seems that we have found the route of the issue.. is it possible to use LE10 office addon snapserver with LE9.2.6?

**heitbaum** · April 1, 2021 at 12:53 PM

The LE10 add on binary (as-is) will not run on 9.x due to glibc library changes and others. It is possible that Snapcast current could be backported - though 9.x is in a maintenance state, I would suggest that the functionality changes be built and committed to LE10, then raise a request for the backport. Alternatively - compile the current and update the local copy.

Are you planning on staying with Kodi 18/LE9 or planning on upgrading?

**heitbaum** · April 2, 2021 at 7:52 AM

Mr.Tiptop - I had some time today.

Give this a go. (This is 0.24.0 without the http changes)

Code

PROJECT=RPi ARCH=arm DEVICE=RPi4 s/create_addon snapserver

LibreELEC.tv/service.snapserver-9.2.0.105.zip at LE9/snapcast · heitbaum/LibreELEC.tv · GitHub

The diffs for 9.2 were: Ubuntu Pastebin

Let me know how you go.

Mr.Tiptop · April 2, 2021 at 9:22 AM

Quote from heitbaum

The LE10 add on binary (as-is) will not run on 9.x due to glibc library changes and others. It is possible that Snapcast current could be backported - though 9.x is in a maintenance state, I would suggest that the functionality changes be built and committed to LE10, then raise a request for the backport. Alternatively - compile the current and update the local copy.
Are you planning on staying with Kodi 18/LE9 or planning on upgrading?

I am planning to go to LE10 as soon as its available on Pi3.

Ill let you know how i get along. Thanks for all the help! been really good.

**heitbaum** · April 5, 2021 at 3:43 PM

Mr.Tiptop - FYI snapserver: Added snapweb with config options by EvTheFuture · Pull Request #5296 · LibreELEC/LibreELEC.tv · GitHub