Do ROS srv open and close nodes?
Hello all,
Not sure if it's important information for this question but I am using ROS indigo.
Let me give you the back story. I have two nodes. Lets call them Node1 and Node2. Node1 publishes messages to Node2. But Node2 does not want a continues stream of data. So the logical thing is to make Node1 use a srv so Node2 can request the data when ever it needs it. Here is where I am skeptical.
When ever I run Node1 (using rosrun) it needs about 2.5 seconds to start streaming data. After it starts, it will send data every 0.5 sec.
If I use srv on Node1, will it need the 2.5 sec it need to start (so every time Node2 request something Node1 will startup, answer and close down) or will it be able to answer every 0.5 sec (so Node1 does not close down but is in a "idle" state) like it does now that it is continuously sending data?
