[Pkg-mpd-maintainers] Bug#970444: Can't connect to httpd stream on MPD

[kaliko]

Hi James

On 16/09/2020 à 19:28, James Klaas wrote :
> […]
> root at myhost:~# service mpd stop
> root at myhost:~# service mpd start
> root at myhost:~# curl http://192.168.144.122:8000
> curl: (7) Failed to connect to 192.168.144.122 port 8000: Connection refused
> 
> I tried other commands you mentioned:
> 
> […]
> root at myhost:/etc/cron.weekly# lsof -Pan -p 10880 -i
> COMMAND   PID USER   FD   TYPE    DEVICE SIZE/OFF NODE NAME
> mpd     10880  mpd    4u  IPv6 114131524      0t0  TCP *:6600 (LISTEN)
> 
> root at myhost:/etc/cron.weekly# ss -antlp | grep mpd
> LISTEN    0         5                        *:6600
> *:*        users:(("mpd",pid=10880,fd=4),("systemd",pid=1,fd=108))
> 
> I greped for mpd since the list of services is quite large. I wanted
> to check there was nothing conflicting on port 8000:
> 
> root at myhost:~# ss -antlp  | grep 8000

Well it looks like MPD is listening on :6600 only (is it playing something?).

> I don't see anything odd in the logs, when set to verbose:
> 
> Sep 14 16:12 : zeroconf: No global port, disabling zeroconf
> Sep 14 16:12 : state_file: Loading state file /var/lib/mpd/state
> Sep 14 16:13 : client: [0] opened from 192.168.47.122:57198
> Sep 14 16:13 : client: [0] malformed command "GET / HTTP/1.1"
> Sep 14 16:13 : client: [0] closed
> Sep 14 16:20 : client: [1] opened from local
> Sep 14 16:20 : client: [1] process command "outputs"
> Sep 14 16:20 : client: [1] command returned 0
> Sep 14 16:20 : client: [1] closed


> I tried adding port 8000 to /lib/systemd/system/mpd.socket under the
> "[Socket]" section and ran "systemctl daemon-reload". But that seems
> to only expose the socket to port 8000.
> 
> Is another section needed in /lib/systemd/system/mpd.socket to open up
> 8000 to the httpd server in mpd?

Systemd socket activation is meant to launch MPD "on demand" when a client tries to
connect on port 6600. IMO, you don't need to add 8000 here.

HTTP output is set in the conf, something like:

---- /etc/mpd.conf -------8<-------------------

audio_output {
    type    "httpd"
    port    "8000"
    enabled "yes"
    ...
}

------------------------->8-------------------

Also, you need to start playing something for MPD to listen on the HTTPD port.

Please paste your MPD config as well.

k.

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