Date: Mon, 04 Mar 2002 10:06:42 -0500
From: Sergey Babkin <sergey@caldera.com>
To: Tony Finch <dot@dotat.at>
Cc: chawla@caldera.com, arch@freebsd.org
Subject: Re: proposition for new socket syscalls {send,recv}fromto
Message-ID: <3C838D82.A9CEA74B@caldera.com>
References: <20020303195801.A17586@chiark.greenend.org.uk>
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Tony Finch wrote: > > I agree that these calls are necessary and should have been presend from > the start, but you seem to be unaware of the usual way of implementing > UDP servers that are aware of multihoming, such as BIND. They typically > use SIOCGIFADDR to read the list of interfaces on the machine then bind > a socket to each one. The server can choose the appropriate socket to > use according to the source address that is required. However this > doesn't deal all that well with a dynamically changing list of interface > addresses... Hm, from looking at the BIND code it seems to reload the list of interfaces periodically, so it can handle the changing list of interfaces. And it has a fair amount of code dealing with it. But not all the servers do this: for instance, tftpd does not. -SB -- Sergey Babkin sergey@caldera.com Escalations Research Group, Caldera - NJ (908)790-2385 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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