Re: [Savonet-users] [savonet/liquidsoap] Random playlists (#600)

[Niall Lindsay]

How can I use check_next I can’t find documentation for its use. Thanks.

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Re: [Savonet-users] [savonet/liquidsoap] Audio stream becomes blank (#572)

[Niall Lindsay]

Also @toots I attempted opam install of liquidsoap and I get this error on run.

https://user-images.githubusercontent.com/9781846/44161386-0e0c1e00-a0b5-11e8-977e-418eb83c5d97.png
^ above imagd

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Re: [Savonet-users] [savonet/liquidsoap] Audio stream becomes blank (#572)

[Niall Lindsay]

I was thinking earlier maybe it’s the mksafe() coming into action producing a 
blank stream of the sources are failing

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Re: [Savonet-users] [savonet/liquidsoap] Audio stream becomes blank (#572)

[Niall Lindsay]

Current script that I’m having problems with

‘’’#!/usr/bin/liquidsoap

Re: [Savonet-users] [savonet/liquidsoap] Telnet is not working properly (#610)

[dromer]

Try this:

```
set("server.telnet.bind_addr", "127.0.0.1")
set("server.telnet.port", 1234)
set("server.telnet", true)
```

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Re: [Savonet-users] [savonet/liquidsoap] Process hangs while decoding (#611)

[Romain Beauxis]

Thanks for this report, much appreciated. I'll look at it ASAP.

Meanwhile, if that is production critical, you can look at the new build-in 
`FFMPEG` decode, which should not have these hang ups (haha)

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Re: [Savonet-users] [savonet/liquidsoap] Process hangs while decoding (#611)

[jdbuys]

Yep 4.05.0, which I installed through opam.

On Wed, Aug 22, 2018, 17:25 Gilou  wrote:

> what version of ocaml are you using? 4.05.0 from the ubuntu repos?
>
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> You are receiving this because you authored the thread.
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Re: [Savonet-users] [savonet/liquidsoap] Process hangs while decoding (#611)

[Gilou]

what version of ocaml are you using? 4.05.0 from the ubuntu repos?

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Re: [Savonet-users] [savonet/liquidsoap] Liquidsoap freezes on a complex script (#609)

[Gilou]

and interestingly (or not), liq honored USR1 in that state, because it 
truncated the log file upon receiving!

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Re: [Savonet-users] [savonet/liquidsoap] Liquidsoap freezes on a complex script (#609)

[Gilou]

if I attach strace to stereotool, it seems to be alive and waiting for data... 
`[pid 30093] read(0, `


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Re: [Savonet-users] [savonet/liquidsoap] Process hangs while decoding (#611)

[Gilou]

Ha! Now I'm not the only one... though your issue is with decoding, mine with 
outputs (#609).. but common ground: process handling in liq... 

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Re: [Savonet-users] [savonet/liquidsoap] Liquidsoap freezes on a complex script (#609)

[Gilou]

I removed all outputs but the one streaming the piped stream, as I suspect it's 
the culprit, it froze again after 1h40, smart_crossfade managed to squeeze one 
more line:
`2018/08/22 12:06:31 [smart_crossfade:3] new >= old + margin, old <= medium and 
new <= high.`
This time I had a socket connected before, and it's responding... 
```
uptime
0d 01h 53m 51s
restart
restart called
```
but it's not doing anything
the external process is still running, hasn't crashed, doesn't complain on 
stderr
If I attach strace to liq, I get:
```
sudo strace -fp 29444
strace: Process 29444 attached with 7 threads
[pid 29454] futex(0x56309c3428a0, FUTEX_WAIT_PRIVATE, 2, NULL   
[pid 29449] futex(0x7f93d8000b48, FUTEX_WAIT_PRIVATE, 0, NULL   
[pid 29448] futex(0x7f93dc000b48, FUTEX_WAIT_PRIVATE, 0, NULL   
[pid 29447] restart_syscall(<... resuming interrupted poll ...> 
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=21809} 
[pid 29445] futex(0x56309c3428a0, FUTEX_WAIT_PRIVATE, 2, NULL 
[pid 29444] futex(0x56309c3428a0, FUTEX_WAIT_PRIVATE, 2, NULL 
[pid 29446] <... select resumed> )  = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=5}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=5}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=5}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=5}) = 0 (Timeout)
[pid 29446] select(0, NULL, NULL, NULL, {tv_sec=0, tv_usec=5}) = 0 (Timeout)
```
If I kill the external process, liq uses 100% of CPU.
I'll try and monitor the external process next time.
I added merge_tracks and drop_metadata to try making stereotool happier, but I 
don't think that's the issue ☹


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[Savonet-users] [savonet/liquidsoap] Process hangs while decoding (#611)

[jdbuys]

Hi,

Liquidsoap correctly uses the ffmpeg decoder, but then hangs and doesn't 
actually stream or give an error, and you can't terminate the process because 
it seems like it can't close ffmpeg.
Attached are the files that cause the issue. I can't replicate it with any 
other files so far.
Any help would be appreciated.

I have compiled the latest version from source on Ubuntu 18.04.
Liquidsoap 1.3.3+scm 
(git://github.com/savonet/liquidsoap.git@a1602f7193774d874d188cd94a2080d56afbbc80:20180822:100724)

And here is my script:

`#!/usr/local/bin/liquidsoap
set("log.file.path","error.log")
set("log.stdout", true)
set("server.telnet",false)
set("server.socket",true)
set("server.socket.path","lsoap.sock")
set("server.socket.permissions",511)
set("server.timeout",20.)
set("scheduler.generic_queues",2)
set("scheduler.non_blocking_queues",2)
set("scheduler.fast_queues",0)
set("scheduler.log",true)
set("init.catch_exn",true)
set("log.level",8)


#Add ffmpeg
def test_ffmpeg(file) = -1 end
ffmpeg_p = "/tmp/ffmpeg/ffmpeg -i - -f mp3 -"
add_decoder(name="FFMPEG",description="Decode files using the ffmpeg decoder 
binary",mimes=["audio/aacp","application/octet-stream","audio/x-wav"],test=test_ffmpeg,ffmpeg_p)


source=fallback(track_sensitive=false,[playlist("/tmp/playlist.pls"),request.queue(id="queue",length=10.0),request.equeue(id="equeue")])
source=audio_to_stereo(id="source",source)
source=mksafe(source)


output.icecast(%mp3(stereo=true,bitrate=64,samplerate=44100),id="icecast",host="127.0.0.1",port=80,user="source",password="hackme",fallible=true,name="GreenMonkey",description="Green
 Monkeys 
Unite!!",mount="idGreenMonkeyUnited",url="http://green-monkey.com",source)
`

[music.zip](https://github.com/savonet/liquidsoap/files/2309821/music.zip)


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[Savonet-users] [savonet/liquidsoap] Telnet is not working properly (#610)

[EntityinArray]

Liquidsoap 1.3.3+scm running on Windows 8.1 x64

I was trying to make station interactable through Telnet server, but after i 
execute a command it says that no such command exists (even if i type "help" 
command that 100% exists) and then my connection to Telnet server times out.

Here's my station code:

set("server.telnet",true)

vol = interactive.float("volume",1.0)

source = amplify(vol,mksafe(playlist("playlist.m3u")))

output.icecast(%mp3,
host = "coolgoga.hldns.ru", port = 8000,
password = "xxx", mount = "entity",
name="cool music", genre="cool", description="hmm",
source
)`

And here what happens when i try to interact through PuTTY telnet client:

https://i.imgur.com/PupBzyH.png
https://i.imgur.com/phgnbvl.png


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[Savonet-users] [savonet/liquidsoap] Liquidsoap freezes on a complex script (#609)

[Gilou]

Hi,
So running most components from master (cry, dtools, duppy, faad, mad, mm). 
Thing is, that script is quite complex, but if I remove each part, the bug is 
really hard to reproduce... All parts have been tested stand alone though.

The script combines:

- playlist()s with a custom check_next function to avoid repetitions
- annotate protocol to set liq_replaygain outside of liq (to avoid cpu 
hogging...)
- amplify
- classical fallback/switch
- smart_crossfade
- on_track to store played tracks 
- input.external using cat on a fifo
- output.external using stereotool, itself outputting to the fifo
- insert_metadata to patch metadata through to icecast
- output.icecast using %mp3(bitrate=256)
- a ladspa "simple" DSP

at the moment I had it freeze, it was outputting 3 streams to icecast:
- the "bypass", basically the smart_crossfade output
- the same processed by the ladspa processor
- the same processed and piped through stereotool

This is really frustrating, and I'm now back to investigating this again, 
trying to strip all parts... I'm dumping here as a "reference" until I can 
narrow it down.
The "freeze" means stdout is stuck, the server doesn't answer the socket. The 
process is alive, but seems stuck polling for something, doesn't respond to 
QUIT/^C.

Script is run using liquidsoap -v full.liq, and is here with supporting 
functions.liq: https://gist.github.com/gilou/43133d2619202791e153211471aff6a1
[liq.log](https://github.com/savonet/liquidsoap/files/2309319/liq.log) contains 
the end of the log, timestamp is hours before I killed it.

[bt.txt](https://github.com/savonet/liquidsoap/files/2309321/bt.txt) is the 
backtrace from the core I got using kill -ABORT on it

It's running on a cheap VPS, using Ubuntu 18.04 on KVM. On this version it 
crashes in less than an hour.





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