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Hi, I don't fully understand the mechanics of rospy's wait_for_service function. Are we required to call wait for service every time we want to call the service, or only once when creating the ServiceProxy?
You don't need to call wait_for_service, but it is highly advisable, since you want to make sure that your service is available before calling it.
Too many things actually. From connection problems to bad code handling that would kill the node that runs the service. Keep in mind that you can set a timeout in wait_for_services after which an exception will be thrown.
rospy.wait_for_servicefunction will wait for the service to active, when the server will get activated then it will return response of your request and then your client side program will proceed further!
I hope you got something meaningful from this :)
Asked: 2017-06-08 03:34:59 -0500
Seen: 4,167 times
Last updated: Jun 08 '17
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