[Linphone-users] multiple linphone-daemons on single machine

[Iain Mott]

Hello,

I need to run several linphone-daemons at once on the one Linux machine 
with an Asterisk server. I have set this up so that each daemon loads a 
separate config file with a unique UDP/TCP port and SIP username and 
corresponding entries in Asterisk's sip.conf. All the servers use the 
PulseAudio Jack sink to enable audio to be played concurrently with that 
of other processes.

While each daemon works successfully on its own, the daemons only 
sometimes work properly when run together. For example if daemon 1 is on 
a call and I send a call message through to daemon 2 to make another 
call, the outcome is unpredictable, sometimes both can be heard, other 
times the sound of one is blocked and yet other times both audio streams 
get jittery.

There are no problems with CPU or memory. Also, i don't believe it is a 
problem with the Jack sink as i can run multiple other audio programs 
concurrently through the sink successfully, including ones in addition 
to the linphone-daemon itself. Also, if i call in from several different 
Android phones with SIP software (again Linphone) to extensions in 
Asterisk (but not the server-based phones), the sound streams with no 
problems.

One difference I see is that the SIP phones all have different IPs, 
whereas all the server-based phones are on the same IP. Might this be it?

Can anyone please offer some suggestions?

I'll paste below the script that I use to launch the daemons, a script 
to send call messages to the servers and also the entries in Asterisk's 
sip.conf.

I've also uploaded a log file of one of the daemons here which includes 
log info of an event where the audio stopped (towards the end):

https://ufile.io/088vjf45

Relevant looking messages include:

mediastreamer-message-MSAudio_stream_iterate[0x55d89bd96ff0], local 
statistics available:
    Local current jitter buffer size:   0.0ms

ortp-warning-ortp_loss_rate_estimator_process 0x55d89bd5c1d0: Suspected 
discontinuity in sequence numbering from 503 to 250

ortp-warning-Receiving packet with unknown payload type 0

Hope someone can help,

Iain


#!/bin/bash

# startlinphones.sh

# Start 3 linphone-daemons

process=$(pgrep linphone-daemon)
set -- $process
process=$1

if [ -z $process ]; # to check if at least one daemon is already running

then

    echo "Starting linphone-daemon 1. Please wait a few seconds."
$(/home/iain/linphone-desktop/build/OUTPUT/bin/linphone-daemon \
      --config /home/iain/.config/linphone/linphonerc1 \
      --disable-stats-events \
      --log /home/iain/tmp/daemon1.log \
      --pipe linphone-daemon1.soc)&

    echo "Starting linphone-daemon 1. Please wait a few seconds."
      $(/home/iain/linphone-desktop/build/OUTPUT/bin/linphone-daemon \
      --config /home/iain/.config/linphone/linphonerc2 \
      --disable-stats-events \
      --log /home/iain/tmp/daemon2.log \
      --pipe linphone-daemon2.soc)&

    echo "Starting linphone-daemon 3. Please wait a few seconds."
    $(/home/iain/linphone-desktop/build/OUTPUT/bin/linphone-daemon \
      --config /home/iain/.config/linphone/linphonerc3 \
      --disable-stats-events \
      --log /home/iain/tmp/daemon3.log \
      --pipe linphone-daemon3.soc)&

else
   echo "linphone-daemons already running"
fi
exit 0

--------------------------------------------

#!/bin/bash

# callnumber.sh

# call number on  a linphone-daemon

daemonnum=$1
phonenum=$2

if ( [ -z $phonenum ] || [ -z $daemonnum ] );
then
    echo "Requires both daemon number and phone number as arguments"
else
    process=$(pgrep linphone-daemon)
    set -- $process
    process=$1 # the 1st number in list
    if [ -z $process ];
    then
    echo "Starting linphone-daemons"
    startlinphones.sh
    sleep 5
    fi
    echo "Calling"
    $(echo "call sip:$phonenum@127.0.0.1" | \
      socat STDIN UNIX-CONNECT:/tmp/linphone-daemon$daemonnum.soc)

fi
exit 0

--------------------------------------------------

excerpt from sip.conf


[daemon1]
type=friend
context=outgoing
host=dynamic
username=daemon1
secret=mypassword
disallow=all
;allow=opus
allow=gsm
allow=ulaw
;direct_media=true
direct_media=false
language=pt_BR

[daemon2]
type=friend
context=outgoing
host=dynamic
username=daemon2
secret=mypassword
disallow=all
;allow=opus
allow=ulaw
;direct_media=true
language=pt_BR

[daemon3]
type=friend
context=outgoing
host=dynamic
username=daemon3
secret=mypassword
disallow=all
;allow=opus
allow=gsm
allow=ulaw
;direct_media=true
direct_media=false
language=pt_BR

----------------------------------

The conf files for each daemon specify unique port numbers