Proposed well known port for printing via HTTP

Proposed well known port for printing via HTTP

Proposed well known port for printing via HTTP

Carl-Uno Manros cmanros at
Tue Nov 19 12:46:14 EST 1996

At 04:18 PM 11/18/96 PST, you wrote:

>Also, in this section, however, we should put some words like...
>  "It will be suggested (in section 5) that Clients identify Printer objects
>  using an HTTP type URL. One element of this proposal will be to further
>  recommend the establishment, through IANA, of a well known port (380
>  recommended) for printing via HTTP. The purpose of this well known port
>  would be to distinguish printing from non-printing content. While any
>  acceptable HTTP content could be inter-mixed over HTTP well known port 80,
>  only HTTP printing would be acceptable on port 380.
>  The remainder of this draft will define the IPP content for HTTP printing,
>  including IPP objects, operations, naming and attributes."
>Harry Lewis - IBM Printing Systems


I brought up this subject with Larry Masinter (who is the IETF HTTP Chair)
when I met him last week. He claims that the HTTP does not really care about
the port number and that hence it would be no point in using a different
number fore the printing protocol. Can somebody else, who is supplying Web
servers, verify this?


Carl-Uno Manros
Xerox Corporation
701 S. Aviation Blvd.
M/S: ESAE-231
El Segundo, CA 90245, USA
E-mail: manros at

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