netdev - Re: getaddrinfo - too many recvmsg calls

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Message-Id: <200907201014.18063.remi.denis-courmont@nokia.com>
Date:	Mon, 20 Jul 2009 10:14:17 +0300
From:	"Rémi Denis-Courmont" 
	<remi.denis-courmont@...ia.com>
To:	ext Zsolt SZALAI <zs.szalai@...il.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: getaddrinfo - too many recvmsg calls

On Monday 20 July 2009 10:05:56 ext Zsolt SZALAI wrote:
> The sanitycheck is now really simple, just a
>     addrinfo hints = { 0, AF_INET, 0, 0, 0, NULL, NULL, NULL };
>     int result = getaddrinfo(ipAddress, NULL, &hints, &addresses);
> call.

What the heck is this supposed to do?
This piece of code tries to resolve <ipAddress> as numerical IPv4 address *or* 
a DNS hostname.

If you want to check that a string is a valid IP address, call inet_pton(). If 
you want to check that an IP address is assigned to the system, create a 
socket and bind to that address.

-- 
Rémi Denis-Courmont
Nokia Devices R&D, Maemo Software, Helsinki

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