<div dir="auto"><div>Hi Paul</div><div dir="auto"><br></div><div dir="auto">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.</div><div dir="auto"><br></div><div dir="auto">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.</div><div dir="auto"><br></div><div dir="auto">Event delivery system should use PSync.</div><div dir="auto"><br></div><div dir="auto">Yours, Junxiao</div><div dir="auto"><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Wed, Mar 20, 2019, 23:19 최강일 <<a href="mailto:forerunner@etri.re.kr">forerunner@etri.re.kr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">



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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">Dear All,</span></span></p>
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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">I'm currently studying NDN for apply if to our application which will be used on Push-style Event Delivery System.
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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial"><span style="FONT-SIZE:10pt;FONT-FAMILY:"Arial",sans-serif;LINE-HEIGHT:107%">According
</span>to the ApplicationParameters of Interest Packet NDN Spec. (<a href="http://named-data.net/doc/NDN-packet-spec/current/interest.html#applicationparameters" target="_blank" rel="noreferrer">http://named-data.net/doc/NDN-packet-spec/current/interest.html#applicationparameters</a>),
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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">    - 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)</span></span></p>
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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">I
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studied </span>some other usages for ApplicationParameters of Interest and <span style="FONT-FAMILY:굴림체">
<span style="FONT-FAMILY:Arial">I found "Singed Interest and Command Interest":</span></span></span></span></p>
<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">    - Redesign Signed Interest and Command Interest to use Parameters(
<a href="https://redmine.named-data.net/issues/4599#change-24434" target="_blank" rel="noreferrer">https://redmine.named-data.net/issues/4599#change-24434</a> )</span></span></p>
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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">My
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understanding </span>for these usages are only for control and management.</span></span></span></span></p>
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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">My questions are:</span></span></p>
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<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><font face="Arial">1. What's <span style="FONT-SIZE:10pt;LINE-HEIGHT:107%">
original </span>intension(usage) for "ApplicationParameters of Interest"? Is it limited for control and management only? There's no clear description on it.</font></p>
<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span><font face="Arial">2. Can I use "ApplicationParameters of Interest" to carry our Application's data over NDN network?</font></span></span></p>
<p style="MARGIN-BOTTOM:0px;MARGIN-TOP:0px"><span style="FONT-FAMILY:굴림체"><span style="FONT-FAMILY:Arial">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?</span></span></p>
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<p style="MARGIN-BOTTOM:0px;FONT-FAMILY:Arial;MARGIN-TOP:0px">Thanks in advance.</p>
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Best wishes,</div>
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<div>Paul Kangil Choi</div>
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