[Twisted-Python] Request for help: throttling serving of static content

exarkun at twistedmatrix.com exarkun at twistedmatrix.com
Mon Nov 5 17:06:12 EST 2012

On 09:12 pm, peter.inglesby at gmail.com wrote:
>Tomorrow I'm giving a talk to provide an introduction to asynchronous
>programming.  I'll be mentioning Twisted in passing, but the meat of 
>talk will be about writing a web crawler for finding broken links, 
>using single-threaded blocking code, then multi-threaded blocking code,
>before demonstrating a non-blocking solution using a select loop.  I 
>make the code and slides available if there's interest.
>For this to be effective, I was planning on writing a very slow 
>to serve static content locally.  I'd expected I'd be able to simply 
>an instance of twisted.web.static.Site in a ThrottlingFactory, and 
>However, this fails with the following error because I've not 
>registered a
>producer with my ThrottlingProtocol:

I don't think you're meant to need to register any producer.  The 
producer is supposed to register itself.  So this seems to be a bug in 
something.  If you can track it down any further and contribute a fix, 
that'd be wonderful.

Also related, though - http://twistedmatrix.com/trac/ticket/601 - so 
even if the producer were registered I don't know if you'd actually 
achieve the desired behavior.


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