Re: [ftpext] Last Call: <draft-ietf-ftpext2-hosts-02.txt> (File Transfer Protocol HOST Command for Virtual Hosts) to Proposed Standard

Mykyta Yevstifeyev <evnikita2@gmail.com> Fri, 24 June 2011 16:51 UTC

Return-Path: <evnikita2@gmail.com>
X-Original-To: ftpext@ietfa.amsl.com
Delivered-To: ftpext@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EF05611E815B; Fri, 24 Jun 2011 09:51:50 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.463
X-Spam-Level:
X-Spam-Status: No, score=-3.463 tagged_above=-999 required=5 tests=[AWL=0.136, BAYES_00=-2.599, RCVD_IN_DNSWL_LOW=-1]
Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XQvUCpgLjGqT; Fri, 24 Jun 2011 09:51:50 -0700 (PDT)
Received: from mail-fx0-f44.google.com (mail-fx0-f44.google.com [209.85.161.44]) by ietfa.amsl.com (Postfix) with ESMTP id EF9F311E815C; Fri, 24 Jun 2011 09:51:49 -0700 (PDT)
Received: by fxm15 with SMTP id 15so2264934fxm.31 for <multiple recipients>; Fri, 24 Jun 2011 09:51:47 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:user-agent:mime-version:to :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=Gdd+/QUuFtrUd/7TZsPew9FPGxIA5LDiIlnEx8fa0ak=; b=RMgAU7jtYbrzD4bm1mLMgL1Yi9OZiudXSz+xvkaEMbuH9ilR+mJq1eSvorSf+2qXAf yYiIr5KgBjiHHq31AZG2+H2G00BzNEBO9S6ovUlOvpAeM2QlV3j22y7FRluRxYRUT+6Z fJW2ScBYzczT2PMxruTjf5CVJr0J+MYPQGtAQ=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; b=R4zjeuEt+WzzyRvAcHqGYKRRtoRNrvsgfnzX8BiK4Id1aGEyvkCTaip61qX//5/AoA q2eB/2hKx81aIB1TBCD9QQ4tzfn3VbKFfEnCvS3wQieRvNpifFAcp/1GHkr7AJ3wQ1zo XV3ygdcngrYVmuOoJe/Re04rXnC1XiSFqT7do=
Received: by 10.223.1.201 with SMTP id 9mr4697128fag.91.1308934306925; Fri, 24 Jun 2011 09:51:46 -0700 (PDT)
Received: from [127.0.0.1] ([195.191.104.224]) by mx.google.com with ESMTPS id y14sm1758091fah.37.2011.06.24.09.51.44 (version=SSLv3 cipher=OTHER); Fri, 24 Jun 2011 09:51:45 -0700 (PDT)
Message-ID: <4E04C0CE.1030807@gmail.com>
Date: Fri, 24 Jun 2011 19:52:30 +0300
From: Mykyta Yevstifeyev <evnikita2@gmail.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.9.2.18) Gecko/20110616 Thunderbird/3.1.11
MIME-Version: 1.0
To: ietf@ietf.org, ftpext@ietf.org
References: <20110616130503.4854.51928.idtracker@ietfa.amsl.com>
In-Reply-To: <20110616130503.4854.51928.idtracker@ietfa.amsl.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
Subject: Re: [ftpext] Last Call: <draft-ietf-ftpext2-hosts-02.txt> (File Transfer Protocol HOST Command for Virtual Hosts) to Proposed Standard
X-BeenThere: ftpext@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: <ftpext.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ftpext>, <mailto:ftpext-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/ftpext>
List-Post: <mailto:ftpext@ietf.org>
List-Help: <mailto:ftpext-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ftpext>, <mailto:ftpext-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 24 Jun 2011 16:51:51 -0000

Hello,

This document is well written; I'm strongly for its publication on 
Standards Track.  I have an only remark.  This document doesn't seem to 
mention what is the behavior of the server if HOST command is sent after 
one HOST has already been sent.  Eg.

C> HOST example.com
S> 220 Host OK
C> USER foo
S> 331 Specify password
C> PASS bar
S> 230 Logged in
C> HOST example.org
S> ????

I suppose the server may treat this as REIN and then switching to 
specified host, if the user is authenticated, and just switch to such 
host if the user isn't already logged in.  Another option is sending 503 
reply, as invalid sequence of commands.

Thanks,
Mykyta Yevstifeyev

16.06.2011 16:05, The IESG wrote:
> The IESG has received a request from the FTP Extensions, 2nd edition WG
> (ftpext2) to consider the following document:
> - 'File Transfer Protocol HOST Command for Virtual Hosts'
>    <draft-ietf-ftpext2-hosts-02.txt>  as a Proposed Standard
>
> [ . . . ]