Mongrel users - Jul 2007 - streaming upload progress plug-in

I''m working on new methods of doing Ajax calls through streaming
responses. I''ve created a little javascript library (which depends on
prototype.js) that can interpret a stream of JSON objects separated by
semicolons.

As an application of this, this Mongrel plug-in streams upload status
when given a qualified  upload_id. It looks like this:
 
{"received":5939792,"status":200,"state":"uploading","size":36872784};
 
{"received":6398544,"status":200,"state":"uploading","size":36872784};
  [...]
 
{"received":36479568,"status":200,"state":"uploading","size":36872784};
 
{"received":36856400,"status":200,"state":"uploading","size":36872784};
 
{"received":36872784,"status":200,"state":"done","size":36872784};

(The format of these JSON objects is the same that is being used in
the upload progress plug-in for Lighttpd 1.5 as described at
http://trac.lighttpd.net/trac/wiki/Docs:ModUploadProgress )

Included with this package is the javascript library Ajax.Pull, and an
example Rails application.

http://s3.amazonaws.com/four.livejournal/20070708/mongrel_streaming_upload_progress-0.2.gem
http://s3.amazonaws.com/four.livejournal/20070708/mongrel_streaming_upload_progress-0.2.tgz

This should work with Safari 3 and Firefox. I haven''t tested IE.
(When I get around to it will add a hack to Ajax.Pull which falls back
on polling a URL for the JSON updates if the browser does not support
Ajax streaming. This plug-in already supports this sort of polling
with the ?single=true URL parameter.)

ry

On Sun, 8 Jul 2007 02:58:45 +0200
"ry dahl" <ry at tinyclouds.org> wrote:
> I''m working on new methods of doing Ajax calls through streaming
> responses. I''ve created a little javascript library (which depends
on
> prototype.js) that can interpret a stream of JSON objects separated by
> semicolons.
Hey Ry, I''ve been missing your contributions lately.  Let me reply to
each of them individually.

With this one though, while it''s cool, it''s so damn lame that
we have to do an HTTP server request to find out how much data the browser has
sent over a socket.

Have you investigated any of the flash or flex based uploaders?

-- 
Zed A. Shaw
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