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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi Syed</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Upon learning the correct prefix “10pm”, the consumer has to send a second Interest with “10pm”. For all subsequent segments, the consumer can directly send “10pm” Interests without first expressing a “2200” Interest and getting a redirection.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The redirection can be in the form of a Link object, as seen in <a href="http://named-data.net/publications/snamp-ndn-scalability/">SNAMP paper</a>.</p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'>Data /vid/sf/breakingnews/20151231/2200/%00%00</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> Content=REDIRECT to /vid/sf/breakingnews/20151231/10pm/%00%00<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> Link /vid/sf/breakingnews/20151231/10pm<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> => /vid/sf/breakingnews/20151231/2200<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> signed by breakingnews.com<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> signed by vehicle</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal>However, this implies the Link object needs to be prepared by the original publisher.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>A producer application must have registered a prefix in the local forwarder to receive the Interest, and construct the Data with redirection when an Interest arrives. ContentStore cannot handle it.</p><p class=MsoNormal>Therefore, the best solution is still: make sure the naming scheme is consistent.</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:s.h.ahmed@ieee.org">Syed Hassan Ahmed</a><br><b>Sent: </b>Thursday, July 21, 2016 09:27<br><b>To: </b><a href="mailto:andrew.brown@intel.com">Brown, Andrew</a><br><b>Cc: </b><a href="mailto:ndn-interest@lists.cs.ucla.edu">ndn-interest@lists.cs.ucla.edu</a><br><b>Subject: </b>Re: [Ndn-interest] Basic Query about Dual Names for one Content</p></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Dear <s>Prof.</s> Junxiao, </span><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Thanks for the detailed explanation. I understood the encapsulation idea, however, your very last comment is basically endorsing my query, where, the appearance of two prefixes may occur for the same content, the consumer has to send Interest two times. Because upon the first Interest Type 1 (referring my previous email), the consumer couldn't retrieve the required content, but it has been informed (redirected) to retransmit Interest with the valid Name prefix... <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>1. Now here jumps in the attacker? Or Malicious Node? What is the security aspect in this case? <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>2. Why would a consumer believe this publisher's intention? If the redirecting message is only signed by the vehicle?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>3. And through what medium/face this Redirection information will be passed? I mean, in a pull based manner, the producer only sends Data, if the prefix matches, otherwise, forwarding Daemon gets active for that Interest and takes decision depending on the strategy, of course. <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Is there any scheme or architectural discussion available, where, two prefixes are used for same content or chunk level retrieval. ?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></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:shijunxiao@email.arizona.edu">Junxiao Shi</a><br><b>Sent: </b>Thursday, July 21, 2016 03:39<br><b>To: </b><a href="mailto:s.h.ahmed@ieee.org">Syed Hassan Ahmed</a><br><b>Cc: </b><a href="mailto:ndn-interest@lists.cs.ucla.edu">ndn-interest@lists.cs.ucla.edu</a><br><b>Subject: </b>Re: [Ndn-interest] Basic Query about Dual Names for one Content<o:p></o:p></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><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Hi Syed</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>A properly designed application should use a consistent naming scheme to access the same content. Choose one of "10pm" and "2200", and stick to it.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>If the content is published under two different names, but the network is not aware of this situation, in-network caching would be ineffective when the Interest carries a different name.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>If the data mule (vehicle) knows the dual name situation, it could respond to "2200" Interest with "10pm" Data through encapsulation;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'>Data /vid/sf/breakingnews/20151231/2200/%00%00</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> Content=Data /vid/sf/breakingnews/20151231/10pm/%00%00</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> Content=news headlines</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> signed by <a href="http://breakingnews.com">breakingnews.com</a></span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> signed by vehicle</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Encapsulation is necessary because Interest name must be a prefix of Data name, but <a href="http://breakingnews.com">breakingnews.com</a> signature is bound to the "10pm" name and the vehicle does not have <a href="http://breakingnews.com">breakingnews.com</a> signing key.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Or the response could use redirection:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'>Data /vid/sf/breakingnews/20151231/2200/%00%00</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> Content=REDIRECT to /vid/sf/breakingnews/20151231/10pm/%00%00</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'> signed by vehicle</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Upon receiving this response, the consumer should reexpress the Interest with "10pm" name.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>Yours, Junxiao<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif'><o:p> </o:p></span></p></div></body></html>