Re: internal dummy connection

[Peng Yonghua]

from the url:

When the Apache HTTP Server manages its child processes, it needs a way 
to wake up processes that are listening for new connections. To do this, 
it sends a simple HTTP request back to itself.

So, why apache want to wake up child processes periodically? It can do 
this based on event mechanism, only when new request is coming in, the 
child will be woken up.

thanks.


On 2017/6/5 星期一 16:49, Holger Kipp wrote:
You might simply want to google it (e.g. "mod_perl internal dummy 
connection")

https://knackforge.com/blog/sivaji/mitigating-apache-internal-dummy-connection-issue

Best regards,
Holger

On 5. Jun 2017, at 08:31, Peng Yonghua <p...@vodafonemail.de 
<mailto:p...@vodafonemail.de>> wrote:

I saw many items like these in log,

::1 - - [05/Jun/2017:14:29:06 +0800] "OPTIONS * HTTP/1.0" 200 125 "-" 
"Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.21 mod_apreq2-20090110/2.8.0 
mod_perl/2.0.8 Perl/v5.18.2 (internal dummy connection)"
::1 - - [05/Jun/2017:14:29:07 +0800] "OPTIONS * HTTP/1.0" 200 125 "-" 
"Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.21 mod_apreq2-20090110/2.8.0 
mod_perl/2.0.8 Perl/v5.18.2 (internal dummy connection)"
::1 - - [05/Jun/2017:14:29:08 +0800] "OPTIONS * HTTP/1.0" 200 125 "-" 
"Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.21 mod_apreq2-20090110/2.8.0 
mod_perl/2.0.8 Perl/v5.18.2 (internal dummy connection)"
::1 - - [05/Jun/2017:14:29:09 +0800] "OPTIONS * HTTP/1.0" 200 125 "-" 
"Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.21 mod_apreq2-20090110/2.8.0 
mod_perl/2.0.8 Perl/v5.18.2 (internal dummy connection)"

what does it mean? why it exists? thanks.