Re: streaming input for large requests

[John Leach <john-6Yy1h0nn+LyySYScBAwQ8Q@public.gmane.org>]

On Tue, 2010-08-10 at 16:25 -0700, Eric Wong wrote:

> Yes, we store uploads to an unlinked temporary file if the body is
> larger than 112 Kbytes (this threshold was established by Mongrel back
> in the day).
> 
> Rack currently requires rewindability, but this requirement will
> most likely be optional in Rack 2.x, and we'll update our code
> to match, then.
> 
> Meanwhile, you can either:
> 
> 1. Write a module to disable writes to tmp for the Unicorn::TeeInput
>    class (or monkey patch it) it.
> 
> 2. Without loading Rack::Lint (or anything that wraps env["rack.input"]):
>    Redirect the temporary file to /dev/null:
> 
>     input = env["rack.input"]
>     if input.respond_to?(:tmp)
>       tmp = input.tmp
>       # StringIO is used for bodies <112K, can't reopen those
>       tmp.respond_to?(:reopen) and tmp.reopen('/dev/null', 'wb')
>     end
> 

thanks for the detailed response Eric.  I'll give this a go.

John.



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