Liquidsoap exits on disconnect from PulseAudio

[tatokis]

Description

Liquidsoap exits when the connection to the PulseAudio server is terminated.

Steps to reproduce

stream = input.pulseaudio(device="stream.monitor")
output.file(fallible=true, %wav, "test.wav", stream)

1. Run above script
2. systemctl --user restart pulseaudio or systemctl --user restart pipewire-pulse
3. Observe Liqudsoap no longer running:

2024/10/04 14:55:47 [clock.pulseaudio:2] Source output_file failed while streaming: Pulseaudio error: Connection terminated!
2024/10/04 14:55:47 [clock.pulseaudio:2] Raised by primitive operation at Pulseaudio in file "src/pulseaudio.ml" (inlined), line 39, characters 0-1023
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Pulseaudio_io.input#get_frame in file "src/core/io/pulseaudio_io.ml", line 156, characters 6-34
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Source.operator#instrumented_get_frame in file "src/core/source.ml", line 657, characters 6-24
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Source.operator#get in file "src/core/source.ml", line 785, characters 12-44
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Output.output#output in file "src/core/outputs/output.ml", line 184, characters 10-30
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Pipe_output.piped_output#output in file "src/core/outputs/pipe_output.ml", line 367, characters 10-21
2024/10/04 14:55:47 [clock.pulseaudio:2] Re-raised at Pipe_output.piped_output#reopen_on_error in file "src/core/outputs/pipe_output.ml", line 359, characters 12-48
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Clock.MkClock.clock#end_tick.(fun) in file "src/core/clock.ml", line 318, characters 16-24
2024/10/04 14:55:47 [clock.pulseaudio:2]
2024/10/04 14:55:47 [clock.pulseaudio:2] Source input.pulseaudio failed while streaming: Pulseaudio error: Connection terminated!
2024/10/04 14:55:47 [clock.pulseaudio:2] Raised by primitive operation at Pulseaudio in file "src/pulseaudio.ml" (inlined), line 39, characters 0-1023
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Pulseaudio_io.input#get_frame in file "src/core/io/pulseaudio_io.ml", line 156, characters 6-34
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Source.operator#instrumented_get_frame in file "src/core/source.ml", line 657, characters 6-24
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Source.operator#get in file "src/core/source.ml", line 785, characters 12-44
2024/10/04 14:55:47 [clock.pulseaudio:2] Called from Clock.MkClock.clock#end_tick.(fun) in file "src/core/clock.ml", line 318, characters 16-24

Expected behavior

The PulseAudio source should be marked as failed so that a fallback can take place, and other streams aren't affected. It should periodically attempt to reconnect to the server.

Liquidsoap version

Liquidsoap 2.2.4-1+dev
Copyright (c) 2003-2023 Savonet team
Liquidsoap is open-source software, released under GNU General Public License.
See <http://liquidsoap.info> for more information.

Liquidsoap build config

* Liquidsoap version  : 2.2.4-1+dev

 * Compilation options
   - Release build       : false
   - Git SHA             : (none)
   - OCaml version       : 4.14.1
   - OS type             : Unix
   - Libs versions       : alsa=0.3.0 angstrom=0.16.0 ao=0.2.4 bigarray=[distributed with Ocaml] bigstringaf=0.9.1 bjack=0.1.6 bytes=[distributed with OCaml 4.02 or above] camlimages.all_formats=4.2.6 camlimages.core=5.0.4 camlimages.exif=5.0.4 camlimages.gif=5.0.4 camlimages.jpeg=5.0.4 camlimages.png=5.0.4 camlimages.tiff=5.0.4 camlimages.xpm=5.0.4 camlp-streams camomile.lib=2.0 cry=1.0.3 curl=0.9.2 dssi=0.1.5 dtools=0.4.5 dune-build-info=3.14.0 dune-private-libs.dune-section=3.14.0 dune-site=3.14.0 dune-site.private=3.14.0 duppy=0.9.4 faad=0.5.1 ffmpeg-av=1.1.11 ffmpeg-avcodec=1.1.11 ffmpeg-avdevice=1.1.11 ffmpeg-avfilter=1.1.11 ffmpeg-avutil=1.1.11 ffmpeg-swresample=1.1.11 ffmpeg-swscale=1.1.11 fileutils flac=0.5.0 flac.decoder=0.5.0 flac.ogg=0.5.0 frei0r=0.1.2 gd=0.5.1 gen=1.1 graphics=5.1.2 inotify=2.0-62-g5e58536 ladspa=0.2.2 lame=0.3.7 liquidsoap-lang=2.2.4-1 liquidsoap-lang.console=2.2.4-1 liquidsoap_alsa liquidsoap_ao liquidsoap_bjack liquidsoap_builtins liquidsoap_camlimages liquidsoap_core liquidsoap_dssi liquidsoap_faad liquidsoap_ffmpeg liquidsoap_flac liquidsoap_frei0r liquidsoap_gd liquidsoap_graphics liquidsoap_ladspa liquidsoap_lame liquidsoap_lo liquidsoap_mad liquidsoap_ogg liquidsoap_ogg_flac liquidsoap_optionals liquidsoap_opus liquidsoap_oss liquidsoap_portaudio liquidsoap_pulseaudio liquidsoap_runtime liquidsoap_samplerate liquidsoap_shine liquidsoap_soundtouch liquidsoap_speex liquidsoap_ssl liquidsoap_taglib liquidsoap_theora liquidsoap_vorbis liquidsoap_xmlplaylist lo=0.2.0 mad=0.5.2 magic-mime=1.3.1 menhirLib=20231231 metadata=0.3.0 mm=0.8.5 mm.audio=0.8.5 mm.base=0.8.5 mm.image=0.8.5 mm.midi=0.8.5 mm.video=0.8.5 ogg=0.7.4 ogg.decoder=0.7.4 opus=0.2.2 opus.decoder=0.2.2 pcre=7.5.0 portaudio=0.2.3 pulseaudio=0.1.5 re=1.11.0 samplerate=0.1.6 sedlex=3.2 seq=[distributed with OCaml 4.07 or above] shine=0.2.3 soundtouch=0.1.9 speex=0.4.1 speex.decoder=0.4.1 ssl=0.7.0 stdlib-shims=[distributed with OCaml 4.07 or above] str=[distributed with Ocaml] stringext=1.6.0 syslog=2.0.2 taglib=0.3.10 theora=0.4.0 theora.decoder=0.4.0 threads=[distributed with Ocaml] threads.posix=[internal] unix=[distributed with Ocaml] uri=4.4.0 vorbis=0.8.0 vorbis.decoder=0.8.0 xmlm=1.4.0 xmlplaylist=0.1.5
   - architecture        : amd64
   - host                : x86_64-pc-linux-gnu
   - target              : x86_64-pc-linux-gnu
   - system              : linux
   - ocamlopt_cflags     : -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -O2 -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection
   - native_c_compiler   : x86_64-linux-gnu-gcc -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -O2 -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -D_FILE_OFFSET_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2
   - native_c_libraries  : -lm

 * Configured paths
   - mode              : default
   - standard library  : (set by dune-site)
   - scripted binaries : (set by dune-site)
   - rundir            : (set by dune-site)
   - logdir            : (set by dune-site)
   - camomile files    : (set by dune-site)

 * Supported input formats
   - MP3               : yes
   - AAC               : yes
   - Ffmpeg            : yes
   - Flac (native)     : yes
   - Flac (ogg)        : yes
   - Opus              : yes
   - Speex             : yes
   - Theora            : yes
   - Vorbis            : yes

 * Supported output formats
   - FDK-AAC           : no (requires fdkaac)
   - Ffmpeg            : yes
   - MP3               : yes
   - MP3 (fixed-point) : yes
   - Flac (native)     : yes
   - Flac (ogg)        : yes
   - Opus              : yes
   - Speex             : yes
   - Theora            : yes
   - Vorbis            : yes

 * Tags
   - Taglib (ID3 tags) : yes
   - Vorbis            : yes

 * Input / output
   - ALSA              : yes
   - AO                : yes
   - FFmpeg            : yes
   - GStreamer         : no (requires gstreamer)
   - JACK              : yes
   - OSS               : yes
   - Portaudio         : yes
   - Pulseaudio        : yes
   - SRT               : no (requires srt)

 * Audio manipulation
   - FFmpeg            : yes
   - LADSPA            : yes
   - Lilv              : no (requires lilv)
   - Samplerate        : yes
   - SoundTouch        : yes
   - StereoTool        : no (requires ctypes-foreign)

 * Video manipulation
   - camlimages        : yes
   - FFmpeg            : yes
   - frei0r            : yes
   - ImageLib          : no (requires imagelib)
   - SDL               : no (requires tsdl-image & tsdl-ttf)

 * MIDI manipulation
   - DSSI              : yes

 * Visualization
   - GD                : yes
   - Graphics          : yes
   - SDL               : no (requires tsdl-image & tsdl-ttf)

 * Additional libraries
   - FFmpeg filters    : yes
   - FFmpeg devices    : yes
   - inotify           : yes
   - irc               : no (requires irc-client-unix)
   - jemalloc          : no (requires jemalloc)
   - lastfm            : no (requires lastfm)
   - lo                : yes
   - memtrace          : no (requires memtrace)
   - mem_usage         : no (requires mem_usage)
   - osc               : no (requires osc-unix)
   - ssl               : yes
   - tls               : no (requires tls-liquidsoap)
   - posix-time2       : no (requires posix)
   - windows service   : no (requires winsvc)
   - YAML support      : no (requires yaml)
   - XML playlists     : yes

 * Monitoring
   - Prometheus        : no (requires prometheus)

Installation method

From distribution packages

Additional Info

No response