>Babak
>----------
>From: Alex Bochannek[SMTP:abochann@cisco.com]
>Sent: Wednesday, December 11, 1996 11:44 AM
>To: Harry Lewis <harryl@vnet.ibm.com>
>Cc: ipp@pwg.org
>Subject: IPP> Re: IPP over TCP
>
>Harry,
>
>I am sure you don't mind that I copy the list on this reply.
>
>I do not currently have a writeup other than what I outlined in my
>email yesterday but I believe it would be absolutely trivial to
>restructure the draft to move references to HTTP into a more generic
>transport mechanism appendix.
>
>With regards to transport over TCP, the comment I have is basically
>that HTTP as a transport in my opinion does not gain you
>anything. Encoding in MIME is a different issue since that would also
>allow transport over email, but specifying HTTP (or more precisely,
>only the HTTP POST command) does require you to track changes in the
>protocol, adhere to it's limitations, and you still need to modify
>browsers and servers to make use of it.
>
>IPP simply needs clear-channel communication between client and server
>and a two-way TCP connection is the easiest way to go (I also think
>one should be able to run IPP over serial and parallel ports, but
>that's a different story). If you want IPP to fit nicely into the Web
>framework (even if it's just for PR reasons), you specify the ipp://
>access method which will go to TCP port 380(?).
>
>There really isn't much that you need to specify for the "TCP
>transport module" other than port numbers and mapping to a URL method
>if you want to, but one thing I personally would really like is to
>specify a how long the TCP session sticks around. This way, you do not
>have to continuously set up and tear down TCP sessions for every
>single command you want to send to the printer (HTTP
>syndrom).
>
>Alex.
>
>> Alex, unfortunately, I am not able to make it to the BOF, but I am very
>> interested in understanding more about your IPP over TCP proposal. I
>> think your recommendation for an appendix is a good one.
>>
>> Will you be posting your proposal, or is there another way for me to aquire
>> your writeup?
>>
>> We will have an IBM rep at the BOF (Roger DeBry). If all else fails, I will
>> ask Roger for a copy of whatever he picks up or his notes.
>>
>> Good luck at the BOF!
>>
>> Harry Lewis - IBM Printing Systems
>
>