[ndnSIM] Adding new field to Interest packet

[Mateus Sousa]

*wireDEcode (before nonce): *

  ////////////////////////////////////////
  // Mateus UFBA-Brazil-2017
  ////////////////////////////////////////
  // NextForwarder
  m_nextForwarder = m_wire.get(tlv::NextForwarder);
  m_lastForwarder = m_wire.get(tlv::LastForwarder);

  ////////////////////////////////////////
  //          END MATEUS
  ////////////////////////////////////////



*wireEncode:*  //////////////////////////////////////////////////
  // My modifications (Mateus)
  //////////////////////////////////////////////////
  getNextForwarder();
  getLastForwarder();
  totalLength += encoder.prependBlock(m_lastForwarder);
  totalLength += encoder.prependBlock(m_nextForwarder);
  //////////////////////////////////////////////////

I tried to copy the Nonce settings.

Thanks,




2017-10-15 23:21 GMT-03:00 Spyridon (Spyros) Mastorakis <
mastorakis at cs.ucla.edu>:

> Hi,
>
> have you modified the wireEncode and wireDecode methods to encode/decode
> the field to/from wire format?
>
> Thanks,
>
> Spyridon (Spyros) Mastorakis
> Personal Website: http://cs.ucla.edu/~mastorakis/
> Internet Research Laboratory
> Computer Science Department
> UCLA
>
> On Oct 15, 2017, at 4:28 PM, Mateus Sousa <mateus.aluufc at gmail.com> wrote:
>
> Hi all,
>
> I added a new field to Interest packet by following the discussions:
> http://www.lists.cs.ucla.edu/pipermail/ndnsim/2015-July/002044.html and
> http://www.lists.cs.ucla.edu/pipermail/ndnsim/2017-March/003481.html.
>
> I created the field "NextForwarder" to point what node is the next
> forwarder to the interest. This field should be updated at every node (here
> is the problem).
>
> However, the alterations aren't persistent. The field value turns into "0"
> no matter what value I set.
>
> Here goes my modifications:
>
> *    src/Interest.cpp: *
>
>     Interest&
>     Interest::setNextForwarder(uint32_t next) {
>            if (m_wire.hasWire() && m_nextForwarder.value_size() ==
> sizeof(uint32_t)) {
>             std::memcpy(const_cast<uint8_t*>(m_nextForwarder.value()),
> &next, sizeof(next));
>   }
>   else {
>     m_nextForwarder = makeBinaryBlock(tlv::NextForwarder,
>                               reinterpret_cast<const uint8_t*>(&next),
>                               sizeof(next));
>     m_wire.reset();
>   }
>   return *this;
> }
>
> uint32_t
> Interest::getNextForwarder() const{
>   if (!m_nextForwarder.hasWire())
>     const_cast<Interest*>(this)->setNextForwarder(9999);
>
>   if (m_nextForwarder.value_size() == sizeof(uint32_t))
>     return *reinterpret_cast<const uint32_t*>(m_nextForwarder.value());
>   else {
>     return readNonNegativeInteger(m_nextForwarder);
>   }
> }
>
>
> *    encoding/tlv.h*
>           NextForwarder = 33, // X- Mateus
>
>
> Thanks in advance.
>
>
>
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