be careful: "ROS services" is not the sane as "service-oriented" as in the meaning of SOA (I mean communication patterns in the line of SOA and *not* in the sense of ROS services) Christian --- Prof. Dr. Christian Schlegel Prodekan, Studiendekan Master IS Fakultät Informatik Hochschule Ulm Tel.: 0731 / 50-28242 http://www.hs-ulm.de/schlegel http://www.zafh-servicerobotik.de/ http://www.youtube.com/user/roboticsathsulm http://smart-robotics.sourceforge.net/ http://www.joser.org/ Am 18.02.2014 um 12:37 schrieb "Kelsey Hawkins" >: but in my personal opinion, services are a bad idea anyway, and what we really want is something more like (though not necessarily exactly the same) what actionlib offers I wholeheartedly agree and might go so far as to call it an antipattern. I feel it overly simplifies synchronous communication, making many nodes more fragile. I'd be happy to see something like actionlib replace services entirely. -Kelsey On Feb 18, 2014 3:42 AM, "Ingo Lütkebohle" > wrote: On Tue, Feb 18, 2014 at 2:12 AM, Brian Gerkey > wrote: On Mon, Feb 17, 2014 at 9:06 AM, Wrede, Sebastian > wrote: > * How will services / RPC be implemented with DDS? Is there already an > accepted standard protocol for doing RPC over DDS? My understanding is: (i) the current DDS spec doesn't include what we call services; (ii) there's an extension for services that is currently under consideration and may make its way into a future revision of the spec; and (iii) some current implementations have vendor-specific extensions for services. I know that many people feel otherwise, but in my personal opinion, services are a bad idea anyway, and what we really want is something more like (though not necessarily exactly the same) what actionlib offers. That is, something which *explicitly* acknowledges that there are always packets/messages underneath, that there is asynchronicity, and that there may be impossibility to act *in the protocol*. Just saying ;-) cheers -- Ingo Lütkebohle, Dr.-Ing. Machine Learning and Robotics Lab, IPVS, Universität Stuttgart http://www.ipvs.uni-stuttgart.de/abteilungen/mlr/abteilung/mitarbeiter/Ingo.Luetkebohle +49-711-685-88350 PGP Fingerprint 3187 4DEC 47E6 1B1E 6F4F 57D4 CD90 C164 34AD CE5B _______________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users _______________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users