Control LMS via cmd-line and JSON

[kinoimkeller]

Hi all,

I am trying in vain to post commands (e.g. play/pause) to LMS via JSON (or status.html for that matter).

Configuration:

• LMS 8.1.1 (previously tried with 7.9.3 as well) running on Win 10
• players: squeezelite (on the same machine as LMS), Squeezebox Classic, Squeezebox Radio, Squeezebox Boom

What I am doing:

curl -X POST -d '{"id":0,"params":["00:15:xx:xx:xx:xx",["button","play"]],"method":"slim.request"}' http://localhost:9000/jsonrpc.js

What happens:
Nothing

Command line shows:

_

(blinking cursor)

server.log:

Slim::Networking::IO::Select::__ANON__ (130) Error: Select task failed calling Slim::Web::HTTP::processHTTP: malformed JSON string, neither array, object, number, string or atom, at character offset 0 (before "'{id:0,params:[00:15...") at /<C:\PROGRA~2\SQUEEZ~1\server\SqueezeSvr.exe>Slim/Web/JSONRPC.pm line 145.
; fh=Slim::Web::HTTP::ClientConn=GLOB(0xebb306c)

For the life of me I can't find the error in the JSON-statement.

If I use the hack via status.html, curl returns the content of the webpage, but the player status doesn't change.

Any help greatly appreciated.

[Paul Webster]

Looks like the single quote at the start and end is being sent ... and I presume it should not be.

[jeroen2]

Looks like the single quote at the start and end is being sent ... and I presume it should not be.

A bit odd though. How are you using this?
In shell script this should work, and would not send the quotes..

[reinholdk]

If you run this on the Windows command line, try escaping the double quotes. See here.

[kinoimkeller]

If you run this on the Windows command line, try escaping the double quotes. See here.

Thanks, escaping the " did the trick, Reinhold--that at least resolves the error in the server.log.

But: no effect, music won't play or pause.

cmd-line now shows

curl: (52) Empty reply from server

So that I now know how to correctly send the code, any other clues to why LMS won't accept the commands?

[coldslabs]

Removing "button" from the json allowed the request to work for me (targeted device played as expected).
https://gist.github.com/samtherussel...d2470b8689d9f2

$ curl -X POST -d '{"id":0,"params":["00:XX:XX:XX:XX:XX",["play"]],"method":"slim.request"}' http://192.168.1.7:9000/jsonrpc.js
{"params":["00:XX:XX:XX:XX:XX",["play"]],"method":"slim.request","id":0,"result":{}}

[kinoimkeller]

Thank you--it works now. But I think this was rather to upgrading LMS to 8.1.1, b/c now with and without the "button" parameter I can control the server from the command-line.

[coldslabs]

Glad it works!

I'm running Logitech Media Server Version: 7.9.3. I was getting the same response you received ("curl: (52) Empty reply from server") when I included "button" in the payload.