Re: self.response().flush() on 1.1b1 with WSGI

--- On Fri, 5/14/10, Christoph Zwerschke <[email protected]> wrote:

> From: Christoph Zwerschke <[email protected]>
> Subject: Re: [Webware-discuss] self.response().flush() on 1.1b1 with WSGI
> To: "Discussion of Webware for Python including feedback and proposals." =
<webware-discuss-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
> Date: Friday, May 14, 2010, 1:14 PM
> Am 14.05.2010 20:26 schrieb Roger
> Haase:
> > I use a call to self.response().flush() on a couple of
> long running
> > transactions.=A0 With the WSGI adapter on 1.1.b1
> the transaction runs
> > to completion, but nothing is transferred until the
> transaction
> > completes.
> >
> > I haven't tested this with other adapters.=A0
> Anyone else notice this?
> =

> Just tested it with mod_webkit, mod_scgi and mod_wsgi and
> it worked =

> nicely with all of them.
> =

> Are you sure you're using the adapter? It does not work
> with the =

> built-in webserver. Also, some Firefox plugins tend to pile
> up response =

> data. Did you test with different browsers?
> =

> There have been some changes to the WSGI adapter after
> 1.1b1, you can =

> try with the current version (but it should also work with
> 1.1b1):
> http://svn.webwareforpython.org/Webware/trunk/WebKit/Adapters/WSGIAdapter=
.py
> =

> -- Christoph

I am bringing up a new server with Ubuntu 10.04.  The problem was that Apac=
he now comes with mod_deflate on by default and mod_deflate waits for and c=
ompresses the entire transaction's output before sending it on.

For the benefit of anyone else who is using flush on a few long running tra=
nsactions, mod_deflate can be turned off for a single servlet by adding a l=
ine to the apache conf:

   SetEnvIf Request_URI ^/webkit/MyXaction no-gzip=3D1 =


Thanks for all your help on the Webware enhancements Christoph!

Roger Haase



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