Understanding Service Nodes
In this part of the tutorial, you will understand how service nodes work.
Note: Make sure you already understand what client libraries are.
A service node is any node that accepts requests and provides responses.
You should think of requests and responses as messages addressed to specific nodes.
Using rosservice
The rosservice tool has several useful commands for working with services.
We can run a service using
rosservice call <service> [args]
We can find out more information about the type of service using
rosservice type <service>
