parameter_bridge echos back when it receives ROS messages

[azeey]

When publishing to the ROS side of the parameter_bridge node, it echos back the message. To test, with roscore running, in one terminal I ran

rosrun ros1_ign_bridge parameter_bridge test@std_msgs/String@ignition.msgs.StringMsg

In another (terminal 2),

rostopic echo /test

And finally

rostopic pub /test std_msgs/String "data: 'Hello'"

I expect to see one message in terminal 2, but I get:

data: "Hello"
---
data: "Hello"
---

[caguero]

And this isn't because rostopic pub keeps sending messages periodically, right? Alternatively, you could publish with the --once option to make sure.

[azeey]

I tried with --once and got the same result.

[chapulina]

I can reproduce it. And ignition only gets the message once:

$ ign topic -e -t /test
data: "Hello"

[caguero]

Me too and as @chapulina mentioned it should only happen in the ROS->Ign direction. I think I know what's happening. I might need to touch Ignition Transport to avoid this issue here.

[caguero]

I have a potential fix in #33 .

[caguero]

Fixed in pull request #33 .