ros python service server

#!/usr/bin/env python from beginner_tutorials.srv import AddTwoInts,AddTwoIntsResponse import rospy def handle_add_two_ints(req): print "Returning [%s + %s = %s]"%(req.a, req.b, (req.a + req.b)) return AddTwoIntsResponse(req.a + req.b) def add_two_ints_server(): rospy.init_node('add_two_ints_server') s = rospy.Service('add_two_ints', AddTwoInts, handle_add_two_ints) print "Ready to add two ints." rospy.spin() if __name__ == "__main__": add_two_ints_server()

ros python service client

#!/usr/bin/env python

import sys
import rospy
from beginner_tutorials.srv import *

def add_two_ints_client(x, y):
    rospy.wait_for_service('add_two_ints')
    try:
        add_two_ints = rospy.ServiceProxy('add_two_ints', AddTwoInts)
        resp1 = add_two_ints(x, y)
        return resp1.sum
    except rospy.ServiceException, e:
        print "Service call failed: %s"%e

def usage():
    return "%s [x y]"%sys.argv[0]

if __name__ == "__main__":
    if len(sys.argv) == 3:
        x = int(sys.argv[1])
        y = int(sys.argv[2])
    else:
        print usage()
        sys.exit(1)
    print "Requesting %s+%s"%(x, y)
    print "%s + %s = %s"%(x, y, add_two_ints_client(x, y))

Posted by: Guest on March-12-2020

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