Topic info command line doesn't list subscribers

[osrf-migration]

Original report (archived issue) by Louise Poubel (Bitbucket: chapulina, GitHub: chapulina).

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To reproduce:

1. Compile examples

2. Start publisher, it publishes HELLO messages

3. Start subscriber, it receives HELLO messages

4. Check topic info with ign topic -i -t /foo and we see the publisher, but not the subscriber.

[osrf-migration]

Original comment by Louise Poubel (Bitbucket: chapulina, GitHub: chapulina).

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Note how the Node::TopicInfo function only returns publishers:

https://github.com/ignitionrobotics/ign-transport/blob/1b74477b81025e1e2245ce49ec6da0f46c080d62/include/ignition/transport/Node.hh#L1012

[osrf-migration]

Original comment by Kavya (Bitbucket: Kavya ).

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Hi,
While I was working on this bug, I faced some difficulties while executing files.
When I 'make' files under the src folder, I can see the executable file only under the 'ignition-transport5.dir' and the following error is being displayed when I try to execute it

'bash: ./Publisher.cc.o: cannot execute binary file: Exec format error'

Is there something that I am missing out on after successfully making files ?

[osrf-migration]

Original comment by Louise Poubel (Bitbucket: chapulina, GitHub: chapulina).

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Thanks for working on this!

The examples I mentioned are under the example folder, you can run them like this:

cd example
mkdir build
cd build
cmake ..
make -j4
./publisher

And on another terminal:

cd example/build
./subscriber

[chapulina]

Duplicate of #263