#3712: Starting other processes in a view gives me some weird results.
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Reporter: Ino Pua <[EMAIL PROTECTED]> | Owner: adrian
Status: new | Component: Core framework
Version: SVN | Keywords:
Stage: Unreviewed | Has_patch: 0
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Quick way of reproducing:
1. Start a new project
2. Replace urls.py with:
{{{
from django.conf.urls.defaults import *
from django.http import HttpResponse
import subprocess
def start(request):
cmdname = request['cmd']
p = subprocess.Popen([cmdname, 'start'], stdout=subprocess.PIPE)
stdout, stderr = p.communicate()
return HttpResponse(stdout or stderr)
def stop(request):
cmdname = request['cmd']
p = subprocess.Popen([cmdname, 'stop'], stdout=subprocess.PIPE)
stdout, stderr = p.communicate()
return HttpResponse(stdout or stderr)
urlpatterns = patterns('',
(r'start/$', start),
(r'stop/$', stop),
)
}}}
3. Start the django server ({{{python manage.py runserver 8080}}})
4. Access an url like:
http://localhost:8080/start/?cmd=/etc/init.d/exim4, or any cmd= that
starts a service (anything that daemonizes). You'll notice that the
loading bar (in my firefox at least) never stops loading, even though the
django web server is done with the request, and the page has been
rendered.
5. If you now stop the server and try to start it again, it wont be able
to bind to its port:
{{{
Validating models...
0 errors found.
Django version 0.96-pre, using settings 'starter.settings'
Development server is running at http://127.0.0.1:8080/
Quit the server with CONTROL-C.
Error: (48, 'Address already in use')
}}}
However, at this time, Im not sure whats causing this to happen. Any ideas
would be appreciated.
Shutting the started service down manually, or accessing the /stop/?cmd=
url before stopping the django server fixes the problem.
--
Ticket URL: <http://code.djangoproject.com/ticket/3712>
Django Code <http://code.djangoproject.com/>
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