From owner-freebsd-hackers@FreeBSD.ORG Wed Jun 2 10:19:28 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D98AE16A4CE for ; Wed, 2 Jun 2004 10:19:28 -0700 (PDT) Received: from santiago.pacific.net.sg (santiago.pacific.net.sg [203.120.90.135]) by mx1.FreeBSD.org (Postfix) with SMTP id C574D43D49 for ; Wed, 2 Jun 2004 10:19:27 -0700 (PDT) (envelope-from oceanare@pacific.net.sg) Received: (qmail 19218 invoked from network); 2 Jun 2004 17:19:26 -0000 Received: from unknown (HELO maxwell6.pacific.net.sg) (203.120.90.212) by santiago with SMTP; 2 Jun 2004 17:19:25 -0000 Received: from pacific.net.sg ([210.24.202.26]) by maxwell6.pacific.net.sg with ESMTP id <20040602171925.QRWJ8220.maxwell6.pacific.net.sg@pacific.net.sg>; Thu, 3 Jun 2004 01:19:25 +0800 Message-ID: <40BE0C13.309@pacific.net.sg> Date: Thu, 03 Jun 2004 01:19:15 +0800 From: Erich Dollansky Organization: oceanare pte ltd User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7b) Gecko/20040409 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Saber ZRELLI References: <40BDF377.4000900@jaist.ac.jp> <40BE05C0.1090807@pacific.net.sg> <40BE092F.9090402@jaist.ac.jp> In-Reply-To: <40BE092F.9090402@jaist.ac.jp> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-hackers@freebsd.org Subject: Re: suggestions ? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Jun 2004 17:19:29 -0000 Hi, Saber ZRELLI wrote: > > Erich Dollansky wrote: > > >>Hi, >> >>Saber ZRELLI wrote: >> >> >>>Hello Dear Seniors , >>>i was looking for some interesting issue related to FreeBSD networking , >>>to make it my master thesis , but i couldn't find such a topic , >>>certainly because i'm not a FreeBSD expert ( but i will be =) ) , >>>so could any member here , especially contributors , i'm sure you have >>>very rich ideas and cool stuff to offer ... >>> >>>i was thinking about implementing Robust TCP/IP connections .. but >>>somebody told me that is not very consistent , and i think so also , >>> >> >>Did you consider fault-tolerant TCP/IP connections to multiple servers? > > > i don't see the difference between connections to one or to multiple > servers , it's still TCP/IP connections between two nodes. > I'm i wrong ? > If multiple servers provide the data, it should not matter which server provides it. But it must made sure that only servers are taken to deliver the data which have their data updated. It is a pretty complex process to keep the data consistent on all servers. If the connection is only to a single server and this single server fails, the client does not get any data any more. If the connection is to multiple servers and at least one of the servers is still up and running, the client still has a chance to get its data. Erich