Date: Thu, 18 Jul 2002 12:59:58 -0600 (MDT) From: Alex Rousskov <rousskov@measurement-factory.com> To: "Chuck T." <freebsdfan@hotmail.com> Cc: net@FreeBSD.ORG Subject: Re: programatically list all local IP addresses ? Message-ID: <Pine.BSF.4.10.10207181253430.39461-100000@measurement-factory.com> In-Reply-To: <F2731T9EDcrnbwM4nQd00019349@hotmail.com>
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On Thu, 18 Jul 2002, Chuck T. wrote: > Yes portablity is a concern, unfortunately my program will > probably be used on Linux more than FreeBSD, sigh. I starting to > read about ioctl() and SIOCGIFADDR which appears to be portable > (and a pain). We had to write portable local address detection for Web Polygraph. In my experience, ioctl/SIOCGIFADDR is not portable at all and is a lot of pain. Linux uses them differently from FreeBSD, and the exact interface/behavior is often OS-version specific (e.g., for Solaris IIRC). Looking at existing code helps. I would suggest using getifaddrs(3) where available (./configure can detect that, of course) and delve into ioctl() and other OS-specific methods where getifaddrs(3) is not supported. Stockpile some pain relieve medication first. $0.02, Alex. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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