[Web-SIG] Emulating req.write() in WSGI
pje at telecommunity.com
Mon Jun 28 23:11:49 CEST 2010
At 01:01 PM 6/28/2010 -0600, Aaron Fransen wrote:
>One of the nice things about mod_python is the req.write() function.
>Although I realize it's somewhat of an abuse to the http protocol,
>it's handy being able to periodically update the client browser with
>a status message for a long-running job.
>So handy in fact that I have a number of applications that rely
>fairly heavily on it as a means of keeping the client (person) happy
>instead of just showing them the default "browser busy" notification.
>There are a couple of workarounds, neither of which are ideal:
>1. Take them immediately to a secondary page, then submit the actual
>job automatically on that second page.
>2. Instead of using HTTP POST, use an HTTP Request Object (ie. Ajax).
>Both of them involve significantly more development effort than an
>Is there a way to emulate the periodic-write functionality in WSGI?
Each string yielded (or passed to the write() callable returned by
start_response) is supposed to be sent straight through to the client.
As long as your WSGI stack is actually conformant to the protocol,
that's all you need to do.
More information about the Web-SIG