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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi Claudio</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In NDN Packet Format spec 0.2-alpha-3, Interest packet is defined as:</p><p class=MsoNormal><span style='font-family:"Courier New"'>Interest ::= INTEREST-TYPE TLV-LENGTH<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'> Name<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'> Selectors?<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'> Nonce<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'> InterestLifetime?<o:p></o:p></span></p><p class=MsoNormal>Note that this is a complete definition of what fields may appear and their ordering, and there is no place for extension fields.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Since Link spec adds Link and SelectedDelegation fields into Interest packet, a strict parser implemented according to NDN Packet Format spec shall reject the packet if those fields appear. In this sense, Link spec violates NDN Packet Format spec.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On the other hand, any packet acceptable to a parser implemented according to NDN Packet Format spec 0.2-alpha-3 will be acceptable to a parser implemented according to Link spec, because Link and SelectedDelegation are optional fields. Thus, Link spec can accept a superset of packets compared to NDN Packet Format spec 0.2-alpha-3.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Yours, Junxiao</p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:marxer@claudio.li">Claudio Marxer</a><br><b>Sent: </b>Friday, August 19, 2016 01:08<br><b>To: </b><a href="mailto:nfd-dev@lists.cs.ucla.edu">nfd-dev@lists.cs.ucla.edu</a><br><b>Subject: </b>Re: [Nfd-dev] Spec for LINK</p></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal>Hi Junxiao,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>What do you mean by "violates the packet format"?</p><p class=MsoNormal>Isn't NDNTLV+Link simply a superset of NDNTLV?</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,</p><p class=MsoNormal>Claudio</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On 08/18/16 06:25, Junxiao Shi wrote:</p><p class=MsoNormal>> Link is an extension that violates packet format.</p><p class=MsoNormal>> Spec is linked on http://named-data.net/codebase/platform/documentation/</p><p class=MsoNormal>> <http://named-data.net/codebase/platform/documentation/> under</p><p class=MsoNormal>> "technical memos".</p></div></body></html>