HttpHealthcheckModule server not marked down

[nikita.tovstoles]

I confirmed that this is an issue only when ip_hash is used - without it
healthcheck fail causes upstream to stop routing requests to failing
node. Could use a bit of help understanding:
- is this by design (i.e ip_hash support never implemented) or a bug?

I am happy to create an enhancement/fix but, as a c-newbie, would
appreciate a bit of guidance on where specifically to look in nginx or
https://github.com/liseen/healthcheck_nginx_upstreams/blob/master/ngx_http_healthcheck_module.c

thanks!

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,215656,225595#msg-225595