checking another node from node with rosnode package

asked 2020-08-29 01:19:35 -0500

Ray_Shim
27 ●5 ●9 ●9

updated 2020-08-29 01:25:43 -0500

Hi guys.

I want to check whether another node exist or not. I really want to use 'rosnode_ping(). (that is in rosnode package). But it doesn't work. Terminal said there is no rosnode_ping.

I think i should add some header or modify cmake file. If there is anyone who is useing rosnode package. Could i get some advice?

or if there is another way to check node, it will be great, too.

rosnode api and package link : http://docs.ros.org/jade/api/rosnode/...

Thanks for your interest, Ray.

/home/raptor/nav_ws/src/patrol_and_tracking/src/manager.cpp:19:34: error: ‘rosnode_ping’ was not declared in this scope
             rosnode_ping("patrol");
                                  ^
patrol_and_tracking/CMakeFiles/manager.dir/build.make:62: recipe for target 'patrol_and_tracking/CMakeFiles/manager.dir/src/manager.cpp.o' failed
make[2]: *** [patrol_and_tracking/CMakeFiles/manager.dir/src/manager.cpp.o] Error 1
CMakeFiles/Makefile2:28967: recipe for target 'patrol_and_tracking/CMakeFiles/manager.dir/all' failed
make[1]: *** [patrol_and_tracking/CMakeFiles/manager.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2

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XmlRpc::XmlRpcValue args, result, payload; args[0] = ros::this_node::getName(); args[1] = std::string(nodename.toStdString()); if(ros::ok() && ros::master::check()) { if (!ros::master::execute("lookupNode", args, result, payload, true)) { //parse payload here, it's a string containing host and port and some other stuff } }

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