[ndnSIM] [EXT] Error running a scenario after making a change

Mon Aug 3 20:46:58 PDT 2020

Dear Junxiao,

I think you are right about that. I am not sure if/when we updated any of
the packages. I ran the command for checking version but it gave me no
output.
Also, is there a way to downgrade the packages safely?

Thank you!

Sincerely,
Pawan Subedi

On Mon, Aug 3, 2020 at 7:19 PM Junxiao Shi <shijunxiao at email.arizona.edu>
wrote:

> Hi Pawan
>
> If you installed ns-3 and ndnSIM many years ago in this directory, the
> directory may contain old binaries that you executed in step 1 and step 3.
> You upgraded one or more packages before the first step, but the old
> binaries are still being executed.
> In step 4 you modified the scenario script, causing waf to recompile,
> which fails.
>
> You can check the versions by executing this command in ns-3/src/ndnSIM
> directory:
> git submodule foreach git log -1
>
> Yours, Junxiao
>
> On Mon, Aug 3, 2020, 20:03 Pawan Subedi <psubedi at crimson.ua.edu> wrote:
>
>> *External Email*
>> Dear Junxiao,
>>
>> Thank you for your reply, but sadly both the statements are correct. Here
>> are details on what happened actually:
>> 1. I ran our previous scenario, and I was able to get the results
>> (including the trace files) as expected.
>> 2. I then copied the .cc file from the scratch folder. I tried running
>> the scenario, this time with this copied file. I got the error messages
>> that I sent in my email.
>> 3. I then deleted the copied file and ran the original file. To my
>> surprise, I was able to get the results as expected. I have the results
>> file from 12:46 PM today.
>> 4. I then added a single line (an empty line) to this .cc file, saved it
>> and tried running the scenario. I again got the errors. I then tried
>> removing the line, it didn't help and I kept getting the error messages.
>> 5. I then ran ./waf configure. I have ever since not been able to run the
>> scenario.
>>
>> I haven't upgraded or downgraded any of the packages throughout the steps
>> I have mentioned above.
>>
>> How can I check the version of ndnSim, NFD, and ndn-cxx from my installed
>> files?
>>
>> Thank you!
>>
>> Sincerely,
>> Pawan Subedi
>>
>>
>> On Mon, Aug 3, 2020 at 3:55 PM Spyridon Mastorakis <
>> smastorakis at unomaha.edu> wrote:
>>
>>> Right.
>>>
>>> LocalControlHeader was deleted from ndn-cxx a few years back if I
>>> remember correctly.
>>>
>>> Spyridon (Spyros) Mastorakis
>>> Assistant Professor
>>> Computer Science Department
>>> University of Nebraska, Omaha
>>> Peter Kiewit Institute Room 175A
>>> https://sites.google.com/site/spyridonmastorakis
>>>
>>> On Aug 3, 2020, at 3:52 PM, Junxiao Shi via ndnSIM <
>>> ndnsim at lists.cs.ucla.edu> wrote:
>>>
>>> Hi Pawan
>>>
>>> Either "added a single line to the .cc file in the scratch folder" or
>>> "Our complete setup was working without any issues before adding this line"
>>> is false.
>>> Did you perform any of the following actions?
>>>
>>>    - Upgrade or downgrade ndnSIM (e.g. git pull)
>>>    - Upgrade or downgrade the scenario template
>>>    - Upgrade or downgrade the ndn-cxx or NFD submodules
>>>
>>>
>>> Most likely, one of the above is not ndnSIM v2.0, but a later version.
>>> "LocalControlHeader" is present in ndnSIM v2.0 (released 5 years ago),
>>> but deleted in later versions.
>>>
>>> Yours, Junxiao
>>>
>>> On Mon, Aug 3, 2020 at 2:48 PM Pawan Subedi <psubedi at crimson.ua.edu>
>>> wrote:
>>>
>>>> *External Email*
>>>> Dear ndnSim team,
>>>>
>>>> My research group had a scenario using ndnSim2.0 and it was running all
>>>> good. I made a simple change to the scenario (added a single line to the
>>>> .cc file in the scratch folder) and now when I try to run the scenario, it
>>>> throws errors. Our complete setup was working without any issues before
>>>> adding this line. Here are the error messages and I am not sure why a
>>>> previously working system is throwing these errors.
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:90:43: error:
>>>> ‘LocalControlHeader’ in namespace ‘ndn::nfd’ does not name a type
>>>>    isEmptyFilteredLocalControlHeader(const
>>>> ndn::nfd::LocalControlHeader& header) const;
>>>>                                            ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:90:73: error: ISO C++
>>>> forbids declaration of ‘header’ with no type [-fpermissive]
>>>>    isEmptyFilteredLocalControlHeader(const
>>>> ndn::nfd::LocalControlHeader& header) const;
>>>>
>>>>  ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp: In member function ‘bool
>>>> nfd::LocalFace::decodeAndDispatchInput(const ndn::Block&)’:
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:142:38: error:
>>>> ‘ndn::nfd::LocalControlHeader’ has not been declared
>>>>      const Block& payload =
>>>> ndn::nfd::LocalControlHeader::getPayload(element);
>>>>                                       ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:156:33: error:
>>>> ‘ndn::nfd::LocalControlHeader’ has not been declared
>>>>                mask |= ndn::nfd::LocalControlHeader::ENCODE_NEXT_HOP;
>>>>                                  ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:158:16: error: ‘class
>>>> ndn::Interest’ has no member named ‘getLocalControlHeader’
>>>>              i->getLocalControlHeader().wireDecode(element, mask);
>>>>                 ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp: At global scope:
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:192:52: error:
>>>> ‘LocalControlHeader’ in namespace ‘ndn::nfd’ does not name a type
>>>>  LocalFace::isEmptyFilteredLocalControlHeader(const
>>>> ndn::nfd::LocalControlHeader& header) const
>>>>                                                     ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:192:82: error: ISO C++
>>>> forbids declaration of ‘header’ with no type [-fpermissive]
>>>>  LocalFace::isEmptyFilteredLocalControlHeader(const
>>>> ndn::nfd::LocalControlHeader& header) const
>>>>
>>>>           ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp: In member function ‘bool
>>>> nfd::LocalFace::isEmptyFilteredLocalControlHeader(const int&) const’:
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:199:23: error:
>>>> ‘ndn::nfd::LocalControlHeader’ has not been declared
>>>>      mask |= ndn::nfd::LocalControlHeader::ENCODE_INCOMING_FACE_ID;
>>>>                        ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:201:17: error: request for
>>>> member ‘empty’ in ‘header’, which is of non-class type ‘const int’
>>>>    return header.empty(mask);
>>>>                  ^
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp: In member function
>>>> ‘ndn::Block nfd::LocalFace::filterAndEncodeLocalControlHeader(const
>>>> Packet&)’:
>>>> ./ns3/ndnSIM/NFD/daemon/face/local-face.hpp:210:23: error:
>>>> ‘ndn::nfd::LocalControlHeader’ has not been declared
>>>>      mask |= ndn::nfd::LocalControlHeader::ENCODE_INCOMING_FACE_ID;
>>>>
>>>> I tried recompiling the project with ./waf configure and still, the
>>>> error exists.
>>>>
>>>> Thank you!
>>>>
>>>> Sincerely,
>>>> Pawan Subedi
>>>>
>>>> _______________________________________________
>>> ndnSIM mailing list
>>> ndnSIM at lists.cs.ucla.edu
>>>
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