[Web-SIG] Emulating req.write() in WSGI

Aaron Fransen aaron.fransen at gmail.com
Mon Jun 28 21:01:47 CEST 2010

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
equivalent req.write().

Is there a way to emulate the periodic-write functionality in WSGI?
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