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internal dummy connection

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deni at amur

Apr 1, 2006, 10:21 AM

Post #1 of 3 (1621 views)
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internal dummy connection

Constantly there are such messages:

XX.XX.XX.XXX - - [01/Apr/2006:15:55:42 +0300] "GET / HTTP/1.0" 200 8273
"-" "Apache/2.2.0 (FreeBSD) mod_ssl/2.2.0 OpenSSL/0.9.7e-p1 DAV/2
PHP/4.4.2 (internal dummy connection)"

what it means?

--
With Best Regards
Denis.
Delphi, Kylix, Perl, PHP, InterBase, FireBird, SQL, HTML, etc.
The manager of the project:
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robsiegen at googlemail

Apr 5, 2006, 2:03 PM

Post #2 of 3 (1543 views)
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Re: internal dummy connection [In reply to]

Denis wrote:
> Constantly there are such messages:
>
> XX.XX.XX.XXX - - [01/Apr/2006:15:55:42 +0300] "GET / HTTP/1.0" 200 8273
> "-" "Apache/2.2.0 (FreeBSD) mod_ssl/2.2.0 OpenSSL/0.9.7e-p1 DAV/2
> PHP/4.4.2 (internal dummy connection)"
>
> what it means?

It's defined in /server/mpm_common.c:

| This function connects to the server, then immediately closes the
| connection.
| This permits the MPM to skip the poll when there is only one listening
| socket, because it provides a alternate way to unblock an accept()
| when the pod is used.

pod=pipe of death.

| The pipe of death is used to tell all child processes that it is time
| to die gracefully.

So if you use the worker MPM which doesn't use a pod, there are no
internal dummy connections anymore.

--
Robert

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sctemme at apache

Jan 27, 2007, 11:45 AM

Post #3 of 3 (1448 views)
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Re: Internal Dummy Connection [In reply to]

On Jan 27, 2007, at 10:41 AM, Nilesh Bansal wrote:

> In our apache httpd access log there are many entries like
> ::1 - - [27/Jan/2007:13:40:03 -0500] "GET / HTTP/1.0" 200 8761 "-"
> "Apache/2.2.3 (Unix) (internal dummy connection)"
>
> I am not sure what is this internal dummy connection. We have around
> 10000 such entries for each day. Is there any bug? We are using httpd
> as a forward proxy server for load balancing using mod_rewrite.

It's away for Apache to signal its children that it's time to die.
This is usually nothing to be worried about. Which MPM are you using?

If you are seeing many child processes spawn and die, you may want to
have a look at your MinSpareServers and MaxSpareServers directives,
and your MaxRequestsPerChild.

S.

--
sctemme[at]apache.org http://www.temme.net/sander/
Open Source Software Consultant
PGP FP: 51B4 8727 466A 0BC3 69F4 B7B8 B2BE BC40 1529 24AF

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