Simple action client freezes at waitForServer(), command line possibility?

edit

What type of topic should '/my_action' be? Since Rviz sent a goal to the topic /move_base_simple/goal which is of type 'geometry_msgs/PoseStamped', I tried that. However I get an error similar to 'assert('Goal' in topic type)', which is quite self evident.

I then tried the topic '/move_base/goal' which is of type '/move_base_msgs/MoveBaseActionGoal'. I then do get the GUI, however there is a red error on the bottom of the GUI box which says 'No Goal and Disconnected from server'. I've tried to fill the fields in but it makes no difference.

I think it's just move_base. The /move_base_simple is not using actionlib.

Right. I have added an edit to my question. It relates to how to start the move_base action server. I would appreciate if you could look at it. Thanks..

In the actionclient GUI, is 'Disconnected from server' the default/start statement?

move_base should be the node to run "everything". It might not come up properly if misconfigured, but there should be warnings. Thus, when rviz works usually the actionclient also works, although it's not 100% guaranteed as rviz uses another mechanism.

That's what I thought as well. Rviz works perfectly, yet the autoclient does not. Also, the simple action client does not work as well. It waits indefinitely as I mentioned at waitForServer().

/move_base should be the action to connect to. There should be actionlib related topics in the move_base node. If not, something is wrong.