[Ndn-interest] The Usage of ApplicationParameters in the Interest packet

[Junxiao Shi]

Hi Paul

The protocol designers won't admit it, but ApplicationParameters is
actually payload in Interest packet , as much as Content is payload in Data
packet. So the answer to question 2 and 3 are yes.

Question 1 is more complicated. ApplicationParameters was called "Interest
payload", but protocol designers decide to call it "parameters" because you
shouldn't be sending large amounts of payload in Interests. It messes up
PIT aggregation, caching, and congestion control.

Event delivery system should use PSync.

Yours, Junxiao

On Wed, Mar 20, 2019, 23:19 최강일 <forerunner at etri.re.kr> wrote:

> Dear All,
>
>
> I'm currently studying NDN for apply if to our application which will be
> used on Push-style Event Delivery System.
>
>
> According to the ApplicationParameters of Interest Packet NDN Spec. (
> http://named-data.net/doc/NDN-packet-spec/current/interest.html#applicationparameters),
>
>
>     - The ApplicationParameters element can carry any arbitrary data that
> parameterizes the request for Data. The Interest’s name MUST include a
> Interest parameters digest component to ensure uniqueness and integrity of
> the parameterized Interest (see Parameters Digest Component section for
> additional details)
>
>
> I studied some other usages for ApplicationParameters of Interest and I
> found "Singed Interest and Command Interest":
>
>     - Redesign Signed Interest and Command Interest to use Parameters(
> https://redmine.named-data.net/issues/4599#change-24434 )
>
>
> My understanding for these usages are only for control and management.
>
>
> My questions are:
>
>
> 1. What's original intension(usage) for "ApplicationParameters of
> Interest"? Is it limited for control and management only? There's no clear
> description on it.
>
> 2. Can I use "ApplicationParameters of Interest" to carry our
> Application's data over NDN network?
>
> 3. Can I extend Signed Interest(which will include ApplicationParameters)
> and use "ApplicationParameters of Signed Interest" to carry our
> Application's data over NDN network?
>
>
> Thanks in advance.
>
> Best wishes,
> Paul Kangil Choi
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.lists.cs.ucla.edu/pipermail/ndn-interest/attachments/20190320/d9b8ae56/attachment-0001.html>