getting "bind to port 8888 failed (Address already in use)" when restarting pigpiod service

[janvda]

This issue is seen in branch https://github.com/janvda/balena-node-red/tree/pigpiod (or more specifically in release https://github.com/janvda/balena-node-red/releases/tag/v2.2.0)

see log file below

04.10.19 08:34:54 (+0200) Installed service 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:34:54 (+0200) Starting service 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:34:55 (+0200) Started service 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:34:55 (+0200)  pigpiod  Starting daemon pigpiod ...
04.10.19 08:34:55 (+0200)  pigpiod  2019-10-04 06:34:55 initInitialise: bind to port 8888 failed (Address already in use)
04.10.19 08:34:55 (+0200)  pigpiod  Can't initialise pigpio library
04.10.19 08:34:55 (+0200)  pigpiod  ... daemon stopped unexpectedly.
04.10.19 08:34:55 (+0200)  pigpiod  netstat -tl | grep 8888
04.10.19 08:34:55 (+0200)  pigpiod  sleeping for 5s - we hope that this releases the bound TCP port 8888
04.10.19 08:35:00 (+0200)  pigpiod  end of sleep
04.10.19 08:35:00 (+0200)  pigpiod  netstat -tl | grep 8888
04.10.19 08:35:00 (+0200)  pigpiod  ... start.sh terminated
04.10.19 08:35:02 (+0200) Service exited 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:35:03 (+0200)  pigpiod  Starting daemon pigpiod ...
04.10.19 08:35:03 (+0200)  pigpiod  2019-10-04 06:35:03 initInitialise: bind to port 8888 failed (Address already in use)
04.10.19 08:35:03 (+0200)  pigpiod  Can't initialise pigpio library
04.10.19 08:35:03 (+0200)  pigpiod  ... daemon stopped unexpectedly.
04.10.19 08:35:03 (+0200)  pigpiod  netstat -tl | grep 8888
04.10.19 08:35:04 (+0200) Restarting service 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:35:03 (+0200)  pigpiod  sleeping for 5s - we hope that this releases the bound TCP port 8888
04.10.19 08:35:08 (+0200)  pigpiod  end of sleep
04.10.19 08:35:08 (+0200)  pigpiod  netstat -tl | grep 8888
04.10.19 08:35:09 (+0200)  pigpiod  ... start.sh terminated
04.10.19 08:35:10 (+0200) Service exited 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:35:11 (+0200)  pigpiod  Starting daemon pigpiod ...
04.10.19 08:35:11 (+0200)  pigpiod  2019-10-04 06:35:11 initInitialise: bind to port 8888 failed (Address already in use)
04.10.19 08:35:11 (+0200)  pigpiod  Can't initialise pigpio library
04.10.19 08:35:11 (+0200) Restarting service 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:35:11 (+0200)  pigpiod  ... daemon stopped unexpectedly.
04.10.19 08:35:11 (+0200)  pigpiod  netstat -tl | grep 8888
04.10.19 08:35:11 (+0200)  pigpiod  sleeping for 5s - we hope that this releases the bound TCP port 8888
04.10.19 08:35:16 (+0200)  pigpiod  end of sleep
04.10.19 08:35:16 (+0200)  pigpiod  netstat -tl | grep 8888
04.10.19 08:35:16 (+0200)  pigpiod  ... start.sh terminated
04.10.19 08:35:18 (+0200) Service exited 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'
04.10.19 08:35:19 (+0200)  pigpiod  Starting daemon pigpiod ...
04.10.19 08:35:19 (+0200)  pigpiod  2019-10-04 06:35:19 initInitialise: bind to port 8888 failed (Address already in use)
04.10.19 08:35:19 (+0200)  pigpiod  Can't initialise pigpio library
04.10.19 08:35:20 (+0200) Restarting service 'pigpiod sha256:bf37556c974eaa33813d077cee9bfe75ade5739172bfc2b38e6384736f5cabbc'

[janvda]

Same issue is reported here:

• https://raspberrypi.stackexchange.com/questions/80271/why-would-os-systemsudo-pigpiod-fail-silently-but-only-part-of-the-time

[janvda]

Increased the sleep period from 5 to 20 sec in commit d35853f

[janvda]

see also following links

• https://stackoverflow.com/questions/21967311/linux-refuse-to-open-listening-port-from-localhost
• https://superuser.com/questions/587055/how-to-explicitly-free-eaddrinuse-port-for-binding-it-again
• https://stackoverflow.com/questions/14388706/how-do-so-reuseaddr-and-so-reuseport-differ

[janvda]

Today I tried to reproduce this issue without any success.

[guymcswain]

If you cannot reproduce can you please close #298 in pigpio repository?