As suggested in "max upload size?" http://www.mail-archive.com/mongrel-users at rubyforge.org/msg02325.html I created a plugin that disconnects (raises an error which terminates the socket) if the specified content-length is higher than 200 MB (by default). I don''t know the behaviour if the specified content length is different than the actual uploaded data or if no content-length is given and chucked uploads are used. I wanted to fix this by using the request_progress(params, clen, total) method but clen represents the number of bytes that still have to come in, not the number of received bytes. How does mongrel deal with uploads when it does not know the total content length? And my second question: Zed suggests in his post "and then attach that to the front of your rails request". Currently my plugin raises an error and disconnects the socket without send a reply at all (and the Apache proxy keeps accepting incoming data making the user wait till the upload is "completed" to discover it didn''t upload). How can I send an HTTP 413 and disconnect on request_begins. I tried passing in the socket into request_begins as a second parameter but I don''t like to mess with the mongrel sources and rather keep everything in the plugin. I made a small writeup on my blog where you can also download the plugin as a gem: http://slasaus.netsend.nl/articles/show/7 The solutions should get more user friendly by aborting the upload from the client''s perspective too, but at least it already prevents full hard disks ;-) Tim ____________________________________________________________________________________ Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/features_spam.html