[Twisted-Python] Limiting number of concurrent client connections

[Jp Calderone]

On Tue, 28 Jun 2005 09:50:49 -0500, Justin Johnson <justinjohnson at gmail.com> wrote:
>>From my experience, the problem has to do with more than just number of
>connections. I've reached the limit from spawning too many processes.

Right.  You need to take into account everything that is happening in the process.  Client connections you create, processes you spawn, _and_ incoming connections you accept.  The below lets you limit one of these factors.  A solution like the semaphore you posted (a version of which is in Twisted 2.0, btw, for those who aren't aware - twisted.internet.defer.DeferredSemaphore) would let you limit the others.

Jp