How does apache runs a application when a request comes in?

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.datemas.de!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path	<nh.jones01@gmail.com>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.033
X-Spam-Evidence	'H': 0.93; 'S': 0.00; 'deployed': 0.07; 'session.': 0.07; 'subject:application': 0.07; 'subject:How': 0.10; 'python': 0.11; 'thread': 0.14; 'apache': 0.15; 'loop.': 0.16; 'subject:when': 0.16; 'thanks,': 0.17; 'subject:request': 0.19; 'error': 0.23; 'sends': 0.24; 'second': 0.26; 'file': 0.32; 'checked': 0.32; 'maintaining': 0.32; 'open': 0.33; 'running': 0.33; 'created': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'shows': 0.36; 'subject:?': 0.36; 'hi,': 0.36; 'error.': 0.37; 'application': 0.37; 'being': 0.38; 'message-id:@gmail.com': 0.38; 'server': 0.38; 'to:addr:python-list': 0.38; 'does': 0.39; 'use.': 0.39; 'to:addr:python.org': 0.39; 'browser': 0.61; 'first': 0.61; 'address': 0.63; 'listening': 0.74; 'header:Reply-to:1': 0.77; 'reply-to:addr:gmail.com': 0.80; 'header:Return-Path:2': 0.84
DKIM-Signature	v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:to:from:reply-to:subject:message-id:mime-version :content-transfer-encoding:content-type; bh=DF3e+8QKwh7yfpQpDxVDFb0G95E2yRlft36SnZs/FTk=; b=dM/p7WY3Rw34qLeFdMRQJjCQxrIP9pD/Asq0dj/ATjHm9B0wNshhqvw4ZTFgWsxWrj NyVP/jxe5rDMMxrGILSfRz+y45HJMv0eUF8HvidrfWcHq04Ywe5oQLtfgPmLHTX7EmWT DBU+JtPaZ2HiVuRqtpafNI4KFJsWal4hT3bsvB3I/+iLV5DJ3xkY+bKr5E8nKmxHr/l4 pmDl4HV+hkUFZ7/gzoAE4yQq0yMQGL744UU9ELECr9tiEPqfhp/q1MzvFDDFMNS9C/m0 lDaobdqV5R9id2XoqiC9t5NyZu2KwpRZelubhBAfbwEjQT5JtTBjW0NCA/6kAwZpJ3ty yjGg==
X-Received	by 10.66.121.164 with SMTP id ll4mr7829959pab.129.1399392449106; Tue, 06 May 2014 09:07:29 -0700 (PDT)
Date	Tue, 6 May 2014 16:07:27 +0000
To	python-list@python.org
From	Norah Jones <nh.jones01@gmail.com>
Subject	How does apache runs a application when a request comes in?
X-Priority	3
X-Mailer	CatPHPMailer 5.1 (phpmailer.sourceforge.net)
MIME-Version	1.0
Content-Transfer-Encoding	8bit
Content-Type	text/plain; charset="utf-8"
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.15
Precedence	list
Reply-To	Norah Jones <nh.jones01@gmail.com>
List-Id	General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe	<https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive	<http://mail.python.org/pipermail/python-list/>
List-Post	<mailto:python-list@python.org>
List-Help	<mailto:python-list-request@python.org?subject=help>
List-Subscribe	<https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups	comp.lang.python
Message-ID	<mailman.9702.1399392458.18130.python-list@python.org> (permalink)
Lines	10
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1399392458 news.xs4all.nl 2882 [2001:888:2000:d::a6]:47860
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:70972

Show key headers only | View raw

Hi, 

I have a python web application running on apache2 deployed with `mod_wsgi`. The application has a thread continuously running. This thread is a ZeroMQ thread and listening to a port in loop. The application is not maintaining session. Now if I open the browser and sends a request to the apache server the data is accepted for the first time. Now when second time I send the request It shows Internal server error. When I checked the error log file for traceback,  It shows the ZMQError:- The address already in use. 

Does apache reloads the application on each request sent from the  browser since so that the ZeroMQ thread is being created everytime and being assigned the port but since the port has already been assigned it shows error....

Thanks,
Norah Jones

Back to comp.lang.python | Previous | Next | Find similar | Unroll thread

Thread

How does apache runs a application when a request comes in? Norah Jones <nh.jones01@gmail.com> - 2014-05-06 16:07 +0000

csiph-web