Re: NSRunloop + shared thread
Re: NSRunloop + shared thread
- Subject: Re: NSRunloop + shared thread
- From: Jens Alfke <email@hidden>
- Date: Thu, 19 Nov 2009 16:51:01 -0800
On Nov 19, 2009, at 3:40 PM, Colin Deasy wrote:
> This shared thread is actually handling potentially large numbers of concurrent url connections/downloads. The reason that I want a block in some of those at different times is a for a form of bandwidth control I am trying to do.
I don't think that will do what you want. The actual socket I/O happens in a background thread owned by CFNetwork; I don't think that thread will stop reading data just because your callback on the main thread hasn't returned yet. It just means that, when you do return, you'll immediately get a bigger chunk of data.
I've seen this general question of rate limiting asked on the macnetworkprog list. IIRC the answer is that Foundation and CFNetwork don't really give you the tools to do it. You'd have to write your own code using low-level BSD sockets APIs. :-P
—Jens_______________________________________________
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