How I managed to run libcoap in DCE 1.9

[Samet Tonyalı]

Hi all,

I dont have a question this time as you can understand from the subject. I will explain how I managed to run obgm's libcoap implementation in DCE 1.9.

Almost 8 months ago, I needed to use libcoap in ns-3 so I tried to run it in DCE 1.8 but I couldnt run it. I had posted a question about the problem in this group, but I was not able to run it successfully.

For another reason, I needed to use it again so decided to give another try.

You can find my system specs and the steps below that I followed to run libcoap in DCE 1.9. Please note that this is tested only on Ubuntu 14.04. Also, I am assuming you are already installed all required external libraries

1) First of all, download the DCE and build it as described in the manual.
2) Download the libcoap, navigate to that folder in the terminal and follow those steps
    a) ./autogen.sh
    b) ./configure --enable-examples CFLAGS="-fPIC -pie -rdynamic -U_FORTIFY_SOURCE"
    c) make
    d) make check
    e) sudo make install
    f) sudo make installcheck
Item b configures the installation so that the runnable files are created as shared objects not traditional executables. In the end of these commands, you will have two shared server and client objects in your /usr/local/bin folder.
3) Add those lines into the end of bashrc file under your home directory and restart your terminal. Please be aware of that this is a hidden file
    a) export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
    b) export DCE_PATH=$DCE_PATH:/usr/local/bin
Item b points where to look to find the shared objects we will use in our ns3 script.
4) Create a folder named, for example, coap in dce/source/ns-3-dce/myscripts folder and copy the files that I attached.
5) Navigate to dce/source/ns-3-dce in the terminal and run this command
    a) ./waf --run dce-coap

This worked in my setup. I hope I didnt skip any step.

If you experience any problems please do not hesitate to ask.

Regards,
Samet Tonyali

[Konstantinos]

Hi,

This looks interesting.

Would you care contributing a HOW-TO page in the ns-3 wiki?

https://www.nsnam.org/wiki/HOWTOs

Regards,

K

[Samet Tonyalı]

Sure. I will try to add a HowTo as soon as I have time.

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Samet TONYALI

Tel: 618-303 78 11

[Hajer Boujezza]

Hi Samet,
I followed the described steps, but after running ./waf --run dce-coap, I received this error message:

Waf: Entering directory `/home/hajjoura/dce_advanced/source/ns-3-dce/build'

--------------------------------------------------------------------
 Python bindings compilation
--------------------------------------------------------------------
[ 10/377] lib/pkgconfig/libns3-dev-netlink-debug.pc:  -> build/lib/pkgconfig/libns3-dev-netlink-debug.pc
[116/377] lib/pkgconfig/libns3-dev-dce-debug.pc:  -> build/lib/pkgconfig/libns3-dev-dce-debug.pc
Waf: Leaving directory `/home/hajjoura/dce_advanced/source/ns-3-dce/build'
'build' finished successfully (1.266s)
assert failed. cond="exeFullPath.length () > 0", msg="Executable 'coap-server' not found !  Please check your DCE_PATH and DCE_ROOT environment variables.", file=../model/dce-manager.cc, line=260
terminate called without an active exception
Command ['/home/hajjoura/dce_advanced/source/ns-3-dce/build/myscripts/coap/bin/dce-coap'] terminated with signal SIGIOT. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>").

[Hajer Boujezza]

Hi all,
I successfully run it.
You should add the two lines under: /etc/bash.bashrc
a) export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib

b) export DCE_PATH=$DCE_PATH:/usr/local/bin

thank you Samet for this great tuto

Le samedi 4 mars 2017 10:08:54 UTC+1, Samet Tonyalı a écrit :

[Vishal Rathod]

Hello sir,

I have tried to install libcoap in my system. I got the error like xsltproc didn't find in coap_attribute.xml.

I didn't get it actually. What it means.

[Samet Tonyalı]

I dont remember such an error. Could you please briefly describe what you have done?

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[Vishal Rathod]

I followed the steps that you have mentioned. I have installed DCE correctly and then start to install libcoap. First two steps are working correctly but when I have tried to make it shows me below error.

make[2]: Entering directory '/home/vishal/Desktop/libcoap-develop/man'

/usr/bin/a2x --doctype manpage --format manpage coap_attribute.txt

a2x: ERROR: "xsltproc"  --stringparam callout.graphics 0 --stringparam navig.graphics 0 --stringparam admon.textlabel 1 --stringparam admon.graphics 0  "/etc/asciidoc/docbook-xsl/manpage.xsl" "/home/vishal/Desktop/libcoap-develop/man/coap_attribute.xml" returned non-zero exit status 127

Makefile:695: recipe for target 'coap_attribute.3' failed

make[2]: *** [coap_attribute.3] Error 1

make[2]: Leaving directory '/home/vishal/Desktop/libcoap-develop/man'

Makefile:991: recipe for target 'all-recursive' failed

make[1]: *** [all-recursive] Error 1

make[1]: Leaving directory '/home/vishal/Desktop/libcoap-develop'

Makefile:600: recipe for target 'all' failed

make: *** [all] Error 2

vishal@vishal-OptiPlex-9020:~/Desktop/libcoap-develop$ 

In my system, asciidoc and a2x are perfectly installed. I tried several other solutions but they didn't work. 

Regards,

Vishal

[Samet Tonyalı]

I am sorry, but I didn't face such problems. It may be about a missing external library. BTW, they have changed the source code significantly after I used it.

[Vishal Rathod]

ok, sir.

Thanks for the reply.

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Vishal Rathod

Research Scholar,

Computer Science and Engineering Department,

National Institute of Technology, Karnataka.

[Vishal Rathod]

Hello sir,

I resolved the error. It's a package problem. After instaling the package, I can run all commands. 

Now, I am trying to run the example. If I have any problem, then I will ask. 

Regards,

Vishal