[Nfd-dev] Some questions about the dissertation of Junxiao Shi
jinyangl at mail.ustc.edu.cn
jinyangl at mail.ustc.edu.cn
Tue Nov 28 23:59:17 PST 2017
Second question:on page 32 of the dissertation, "As well as collected measurements about recent data retrievals by Interests sharing,a common
prefix. The latter, measurements about recent retrievals, are collected by the strategy by observing the outcome of forwarded Interests to each
next hop,….”. where are these measurements stored? Can I find the corresponding position in the NFD code?
The protocol does not specify where to store such measurements.
NFD implementation stores per-namespace strategy measurements in the measurements tab
the second question, you mean that NFD store these measurements( successful retrieval ratio, traffic volume and
round trip time) in measurements table ( by some files ,such as NFD/daemon/table/measurement.cpp) ?
And, when i use the ndndump to monitor the packets transmited by ndnputchunks/ndncatchunks( in ndn-tools)
,there will be something like the following:
1511940820.665572 From: 192.168.106.162, To: 192.168.106.90, Tunnel Type: UDP, INTEREST: /my?ndn.MinSuffixComponents=3&ndn.MaxSuffixComponents=3&ndn.ChildSelector=1&ndn.Nonce=1454363781
1511940820.666891 From: 192.168.106.90, To: 192.168.106.162, Tunnel Type: UDP, INCOMPLETE-PACKET, size: 1472
1511940820.667814 From: 192.168.106.162, To: 192.168.106.90, Tunnel Type: UDP, INTEREST: /my?ndn.MinSuffixComponents=3&ndn.MaxSuffixComponents=3&ndn.ChildSelector=1&ndn.InterestLifetime=300&ndn.Nonce=2091958046&ndn.Exclude=*,%FD%00%00%01%60%06%B1%C38
the file'size i transmit is 1.6kb and i can successfully receive complete file.
But ,why does it display "IMCOMPLTETE-PACKET" and why does it send two INTERESTS?
i think that doesn't mean that I can't receive complete Data because i an get complete file. however it doesn't display DATA's information.
When i use ndndump to monitor the packet transmited by producer/comsumer( ndn-cxx/example/) between two nodes.
it looks like:
1511940875.223375 From: 192.168.106.162, To: 192.168.106.90, Tunnel Type: UDP, INTEREST: /example/testApp/randomData?ndn.MustBeFresh=1&ndn.InterestLifetime=1000&ndn.Nonce=4078959978
1511940875.225902 From: 192.168.106.90, To: 192.168.106.162, Tunnel Type: UDP, DATA: /example/testApp/randomData/testApp/%FD%00%00%01%60%06%B2%E3%D8
what's the difference?
Your, Jinyang
jinyangl at mail.ustc.edu.cn
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