Re: [Anima] 答复: Request for presentation

Hi
    Thanks for your feedback. This is the design before PAP Draft 02. I didn't notice that there was a GRASP protocol.
Therefore, we submitted draft 03 and wanted to get the comments from ANIMA. Whether the use cases and ideas mentioned in the PAP can be extended on the GRASP.

Regards
Shuanglong

-----Original Message-----
From: Anima [mailto:anima-bounces@ietf.org] On Behalf Of Brian E Carpenter
Sent: Tuesday, November 3, 2020 11:28 AM
To: Chenshuanglong <chenshuanglong@huawei.com>; tte@cs.fau.de; anima-chairs@ietf.org
Cc: Lizhenbin <lizhenbin@huawei.com>; anima@ietf.org; Guyunan <guyunan@huawei.com>
Subject: Re: [Anima] 答复: Request for presentation

Hi,

I don't really understand why you might need a new protocol for this. It sounds like a very good application for the ANIMA model, and everything you describe could easily be expressed in GRASP objectives (synchronization or negotiation are both covered). You discuss this in Section 7.

On one specific point:

>    PAP uses UDP as its transport protocol, which is connectionless.  The
>    reason that UDP is selected over TCP is because PAP is intended for
>    on-demand communications.

I don't understand that argument. In either case you need a listener, whether it's listening for a new TCP connection or a new UDP session. Actually it's a lot more work, in my experience, to write a UDP server because it has to do a lot of housekeeping that TCP does for you. I started designing a GRASP implementation over UDP but decided that it would not in reality be more efficient than TCP, because it would need extra logic at the upper layer to manage session state.

Also of course TCP gives you TLS, which I suspect is a lot easier in practice than DTLS. However, if you use the ANIMA infrastructure you get a full security solution without any extra work.

Regards
   Brian Carpenter

On 03-Nov-20 15:55, Chenshuanglong wrote:
> Hi Toerless,
>     Because this draft is related to ANIMA, I would like to discuss it in the ANIMA session.
>   
> Regards
> Shuanglong
> 
> 发件人: tte@cs.fau.de [mailto:tte@cs.fau.de] 
> 发送时间: 2020年11月2日 23:55
> 收件人: Chenshuanglong <chenshuanglong@huawei.com>
> 抄送: Lizhenbin <lizhenbin@huawei.com>; Guyunan <guyunan@huawei.com>
> 主题: Re: Request for presentation
> 
> Shuanglong:
> 
> You did not indicate which session you want to present in 
> 
> Cheers
>     Toerless
> 
> On Mon, Nov 02, 2020 at 01:36:35PM +0000, Chenshuanglong wrote:
>> Hi Toerless,
>>
>> I apply for timeslot for presentation.  The information of the presentation is as follows:
>>
>> Name of time slot:  draft-li-rtgwg-protocol-assisted-protocol-03
>>
>> Name of draft(s) (if any, NOT REQUIRED, but usually desired ;-): draft-li-rtgwg-protocol-assisted-protocol-03
>>                                  https://tools.ietf.org/html/draft-li-rtgwg-protocol-assisted-protocol-03
>> Amount of time requested: 10 minutes
>>
>> Presenter name(s): Shuanglong Chen
>>
>> Best Regards,
>> Shuanglong
> _______________________________________________
> Anima mailing list
> Anima@ietf.org
> https://www.ietf.org/mailman/listinfo/anima
> 

_______________________________________________
Anima mailing list
Anima@ietf.org
https://www.ietf.org/mailman/listinfo/anima