IPP Mail Archive: RE: IPP> Re: New IPP Scheme

RE: IPP> Re: New IPP Scheme

Manros, Carl-Uno B (cmanros@cp10.es.xerox.com)
Fri, 17 Jul 1998 10:45:41 PDT

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Maybe in reply to: Keith Moore: "IPP> Re: New IPP Scheme"

Carl,

I think we should take the text suggested by Keith yesterday.

Carl-Uno

> -----Original Message-----
> From: Carl Kugler [mailto:kugler@us.ibm.com]
> Sent: Friday, July 17, 1998 9:45 AM
> To: cmanros@cp10.es.xerox.com
> Subject: RE: IPP> Re: New IPP Scheme
>
>
> True!
>
> How about this instead:
>
> IANA has assigned Well Known Port 631 to the default IPP port
> number. An IPP
> server listens on port 631 unless explicitly configured to
> listen on one or
> more ports instead of, or in addition to, port 631. If the
> port is empty or
> not given in an "ipp" schemed URL, port 631 is assumed.
>
> -Carl
>
>
>
> cmanros@cp10.es.xerox.com on 07/16/98 05:30:00 PM
> Please respond to cmanros@cp10.es.xerox.com
> To: Carl Kugler/Boulder/IBM@ibmus
> cc:
> Subject: RE: IPP> Re: New IPP Scheme
>
>
> Carl,
>
> Your proposal isn't quite right either. An IPP server can
> also listen to
> several ports e.g port 631 and port 80.
>
> Carl-Uno
>
> > -----Original Message-----
> > From: Carl Kugler [mailto:kugler@us.ibm.com]
> > Sent: Thursday, July 16, 1998 2:10 PM
> > To: ipp@pwg.org
> > Subject: RE: IPP> Re: New IPP Scheme
> >
> >
> > --=====================_160811464==_.ALT
> > > Content-Type: text/plain; charset="us-ascii"
> > >
> > > I wrote the sentences that you are asking about. I tried
> > to pick words that
> > > would be unambiguous.
> > >
> > > The intention is that IPP software must be able to listen
> > on port 631 and
> > > may be able to listen on other ports.
> > > If such software allows an administrator to configure the
> > ports, then such
> > > an adminstrator may be able to have IPP software listen
> > other ports, such as
> > > port 80 and might make it be the only port that the IPP
> > server listens on.
> > > The customer has the right to do what he wants, even if we
> > don't think it is
> > > the wisest choice.
> > >
> > > Bob Herriot
> > >
> >
> > What I find ambiguous, then, are the words "in addition to"
> > and "as well" in these sentences:
> >
> > "IPP server implementations may support other ports, in
> > addition to this port."
> >
> > "It is REQUIRED that a printer implementation support
> > HTTP over the IANA assigned Well Known Port 631 (the IPP
> > default port), though a printer implementation may support
> > HTTP over port some other port as well."
> >
> > Maybe it should say:
> >
> > "It is REQUIRED that a printer implementation support
> > HTTP over the IANA assigned Well Known Port 631 (the IPP
> > default port), though a printer implementation may be
> > configured to listen on some other port instead."
> >
> > -Carl
> >
> > >
> > > At 10:24 AM 7/16/98 , Carl Kugler wrote:
> > > >Carl:
> > > >>
> > > >> The implementation MUST support port 631 however, mine
> > is administratively
> > > >> set to only OPERATE on port 80. The code is compliant.
> > > >>
> > > >> Don
> > > >>
> > > >>
> > > >Hmmm... I think we need some clarification in the wording
> > here, because I
> > > think it's ambiguous as it stands. Here's another quote:
> > "IPP server
> > > implementations MUST offer IPP services using HTTP over the
> > IANA assigned Well
> > > Known Port 631 (the IPP default port). IPP server
> > implementations may support
> > > other ports, in addition to this port."
> > > >
> > > >So you read "suport" and "offer IPP services" to mean "can
> > be configured to
> > > listen on" rather than "is required to listen on"?
> > > >
> > > > -Carl
> > > >
> > > >>
> > > >>
> > > >> "Carl Kugler" <kugler%us.ibm.com@interlock.lexmark.com>
> > on 07/16/98
> > > >> 12:18:26 PM
> > > >>
> > > >> To: ipp%pwg.org@interlock.lexmark.com
> > > >> cc: (bcc: Don Wright)
> > > >> bcc: Don Wright
> > > >> Subject: RE: IPP> Re: New IPP Scheme
> > > >>
> > > >>
> > > >>
> > > >>
> > > >> ...
> > > >> > Sorry Larry, but my printer isn't on the default IPP
> > port of 631. Mine
> > > >> is
> > > >> > on 80 so my URL is exactly right. Not all
> > implementations MUST be on
> > > >> 631.
> > > >> ...
> > > >> That's not how I read
> > ftp://ftp.pwg.org/pub/pwg/ipp/new_PRO/ipp-pro-980630
> > > >>
> > > >> It says "It is REQUIRED that a printer implementation
> > support HTTP over the
> > > >> IANA assigned Well Known Port 631...". Therefore, a conforming
> > > >> implementation MUST be on 631, although it might also be
> > on some other port
> > > >> simultaneously.
> > > >>
> > > >> -----
> > > >> Original Message: http://www.findmail.com/list/ipp/?start=4106
> > > >> Start a FREE email list at http://www.FindMail.com/
> > > >>
> > > >>
> > > >>
> > > >>
> > > >>
> > > >>
> > > >
> > > >
> > > >
> > > >-----
> > > >Original Message: http://www.findmail.com/list/ipp/?start=4138
> > > >Start a FREE email list at http://www.FindMail.com/
> > > >
> > >
> > > --=====================_160811464==_.ALT
> > > Content-Type: text/html; charset="us-ascii"
> > >
> > > <html>
> > > I wrote the sentences that you are asking
> > about.  I
> > > tried to pick words that 
> > > would be unambiguous. 
> > > 
> > > The intention is that IPP software must be able to listen
> > on port 631 and
> > > 
> > > may be able to listen on other ports. 
> > > If such software allows an administrator to configure the
> > ports, then
> > > such 
> > > an adminstrator may be able to have IPP software listen
> > other ports, such
> > > as 
> > > port 80 and might make it be the only port that the IPP
> > server listens
> > > on.  
> > > The customer has the right to do what he wants, even if we
> > don't think it
> > > is 
> > > the wisest choice. 
> > > 
> > > Bob Herriot 
> > > 
> > > 
> > > At 10:24 AM 7/16/98 , Carl Kugler wrote: 
> > > >Carl: 
> > > >> 
> > > >> The implementation MUST support port 631 however, mine is
> > > administratively 
> > > >> set to only OPERATE on port 80.  The code is
> > > compliant. 
> > > >> 
> > > >> Don 
> > > >> 
> > > >> 
> > > >Hmmm... I think we need some clarification in the
> wording here,
> > > because I think it's ambiguous as it stands.  Here's another
> > > quote:  "IPP server implementations MUST offer
> > IPP services
> > > using HTTP over the IANA assigned Well Known Port 631 (the
> > IPP default
> > > port). IPP server implementations may support other ports,
> > in addition to
> > > this port." 
> > > > 
> > > >So you read "suport" and "offer IPP
> > services" to
> > > mean "can be configured to listen on" rather
> than "is
> > > required to listen on"? 
> > > > 
> > > >    -Carl 
> > > > 
> > > >> 
> > > >> 
> > > >> "Carl Kugler"
> > > <kugler%us.ibm.com@interlock.lexmark.com> on 07/16/98 
> > > >> 12:18:26 PM 
> > > >> 
> > > >> To:   ipp%pwg.org@interlock.lexmark.com 
> > > >> cc:    (bcc: Don Wright) 
> > > >> bcc:  Don Wright 
> > > >> Subject:  RE: IPP> Re: New IPP Scheme 
> > > >> 
> > > >> 
> > > >> 
> > > >> 
> > > >> ... 
> > > >> > Sorry Larry, but my printer isn't on the
> > default IPP port
> > > of 631.  Mine 
> > > >> is 
> > > >> > on 80 so my URL is exactly right.  Not all
> > > implementations MUST be on 
> > > >> 631. 
> > > >> ... 
> > > >> That's not how I read
> > > <a
> > href="ftp://ftp.pwg.org/pub/pwg/ipp/new_PRO/ipp-pro-980630"
> > eudora="autourl"><font
> > size=3>ftp://ftp.pwg.org/pub/pwg/ipp/new_PRO/ipp-pro-980630</a> 
> > > >> 
> > > >> It says "It is REQUIRED that a printer
> implementation
> > > support HTTP over the 
> > > >> IANA assigned Well Known Port 631...". 
> > Therefore, a
> > > conforming 
> > > >> implementation MUST be on 631, although it might
> > also be on some
> > > other port 
> > > >> simultaneously. 
> > > >> 
> > > >> ----- 
> > > >> Original Message:
> > > <a href="http://www.findmail.com/list/ipp/?start=4106"
> > eudora="autourl"><font
> > size=3>http://www.findmail.com/list/ipp/?start=4106</a> 
> > > >> Start a FREE email list at
> > > <a href="http://www.findmail.com/" eudora="autourl"><font
> > size=3>http://www.FindMail.com/</a> 
> > > >> 
> > > >> 
> > > >> 
> > > >> 
> > > >> 
> > > >> 
> > > > 
> > > > 
> > > > 
> > > >----- 
> > > >Original Message:
> > > <a href="http://www.findmail.com/list/ipp/?start=4138"
> > eudora="autourl"><font
> > size=3>http://www.findmail.com/list/ipp/?start=4138</a> 
> > > >Start a FREE email list at
> > > <a href="http://www.findmail.com/" eudora="autourl"><font
> > size=3>http://www.FindMail.com/</a> 
> > > > 
> > > </html>
> > >
> > > --=====================_160811464==_.ALT--
> > >
> > >
> > >
> >
> >
> >
> > -----
> > Original Message: http://www.findmail.com/list/ipp/?start=4144
> > Start a FREE email list at http://www.FindMail.com/
> >
>
>
>
>

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