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Re: Asynchronous OT calls on Mac OS X?

Subject: Re: Asynchronous OT calls on Mac OS X?
From: Peter Sichel <email@hidden>
Date: Thu, 7 Jun 2001 15:12:33 -0400

At 10:14 AM -0700 6/7/01, email@hidden wrote:

I dont know how much this will help, but this is some of what we learned
at WWDC.

All OT calls on OS X are simulated using standard BSD sockets calls and
threads. In general there will be about 10% performance penalty for this.

In addition, the BSD sockets DNR (Domain Name Resolver) is not
re-entrant and lookups cannot be cancelled. This means DNS lookups
using the local resolver are performed synchronously one at a time.

The only way around this is to talk to the Name Server directly,
that is, implement your own resolver.

- Peter

--

References:
	>Asynchronous OT calls on Mac OS X? (From: Richard Fox <email@hidden>)
	>Re: Asynchronous OT calls on Mac OS X? (From: email@hidden)

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