[Nfd-dev] How to enable a new forwarding strategy

[Lei Liu]

Hi Alex,

We tried the tmp.hpp and tmp.cpp files provided by you, but still have the
same problem when installing the new forwarding strategy.

Below is our details procedures. Please take a look to see if there is any
problem.

1. install ndn-cxx
git clone https://github.com/named-data/ndn-cxx
./waf configure
./waf
sudo ./waf install

2. install NFD
git clone --recursive https://github.com/named-data/NFD
added tmp.hpp and tmp.cpp files into daemon/fw folder
./waf configure
./waf
sudo ./waf install

3. run NFD and enable the new forwarding strategy
nfd-start
nfdc set-strategy /hello /localhost/nfd/strategy/tmp/%FD%00
ERROR: Failed to set strategy choice: unsupported strategy (code:504)

Other build-in forwarding strategies are working well on this machine, such
as the client-control, best-route, etc.

Please let me know your opinion,
Thanks,
Best regards,

Lei


2016-02-09 17:36 GMT-08:00 bigcatlei at gmail.com <bigcatlei at gmail.com>:

> Hi Alex,
>
> Thanks!
>
> We also put it in daemon/fw. Maybe something is wrong in our side. We
> will double check carefully.
>
> Thanks,
> Best regards,
>
> Lei
>
>
> On Feb 9, 2016，5:30 PM，Alex Afanasyev <aa at cs.ucla.edu> wrote:
>
>
> On Feb 9, 2016, at 4:51 PM, bigcatlei at gmail.com wrote:
>
> Hi Alex,
>
> Thanks for your reply. We did add the following into our cpp program
>
> const Name
> YourStrategyClass::STRATEGY_NAME("ndn:/localhost/nfd/strategy/you-strategy-name/%FD%00");
> NFD_REGISTER_STRATEGY(YourStrategyClass);
>
>
> But it doesn't work. The nfdc cannot use the new strategy with the error
> code 504.
>
> Is there any other particular things that we need to note in order to
> install a new forwarding strategy?
>
>
> Hmm. It should work.  I just tried to create a dummy strategy.  I just
> added tmp.hpp and tmp.cpp files into daemon/fw folder and had invocation
> of NFD_REGISTER_STRATEGY macro.  After I run the compiled NFD, I'm able to
> use nfdc to set strategy:
>
>     # nfdc set-strategy /hello /localhost/nfd/strategy/tmp/%FD%00
>     Successfully set strategy choice: ControlParameters(Name: /hello,
> Strategy: /localhost/nfd/strategy/tmp/%FD%00, )
>
> <add-tmp-strategy.patch>
>
>
> Did you added your strategy files in some other location?
>
> ---
> Alex
>
>
> Thanks,
> Best regards,
>
> Lei
>
>
> On Feb 9, 2016，3:58 PM，Alex Afanasyev <aa at cs.ucla.edu> wrote：
>
>
> On Feb 9, 2016, at 2:31 PM, Lei Liu <bigcatlei at gmail.com> wrote:
>
>
> Hi,
>
>
> We developed a new forwarding strategy, but how to actually use it in NFD?
> nfdc command-line tool does not recognize this new forwarding strategy.
>
>
> NFD developer guide mentioned to modify daemon/fw/available-strategies.cpp
> and install the new strategy to the list of existing built-in strategies.
> But this file "daemon/fw/available-strategies.cpp" is no longer available
> in the latest NFD.
>
>
> Thanks,
>
> Best regards,
>
>
> Lei
>
>
> In .cpp file of your strategy just add
>
> const Name
> YourStrategyClass::STRATEGY_NAME("ndn:/localhost/nfd/strategy/you-strategy-name/%FD%00");
> NFD_REGISTER_STRATEGY(YourStrategyClass);
>
> After that you should be able to use
> ndn:/localhost/nfd/strategy/you-strategy-name in nfdc.
>
> ---
> Alex
>
>
>
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