Webware for Python

Am 14.05.2010 20:26 schrieb Roger Haase:
> I use a call to self.response().flush() on a couple of long running
> transactions.  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.  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

--- On Fri, 5/14/10, Christoph Zwerschke <cito@...> wrote:

> From: Christoph Zwerschke <cito@...>
> Subject: Re: [Webware-discuss] self.response().flush() on 1.1b1 with WSGI
> To: "Discussion of Webware for Python including feedback and proposals." <webware-discuss@...>
> 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.  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. 
> 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 Apache now comes with mod_deflate on by default and mod_deflate waits for and compresses the entire transaction's output before sending it on.

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

   SetEnvIf Request_URI ^/webkit/MyXaction no-gzip=1 

Thanks for all your help on the Webware enhancements Christoph!

Roger Haase

Am 15.05.2010 23:56 schrieb Roger Haase:
> For the benefit of anyone else who is using flush on a few long
> running transactions, mod_deflate can be turned off for a single
> servlet by adding a line to the apache conf:
 > SetEnvIf Request_URI ^/webkit/MyXaction no-gzip=1

Thanks for the feedback. I've addded this and hints about other possbile 
to the flush() docstring now.

-- Christoph