client_connection_header.py
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1 #!/usr/bin/env python
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34 # Revision $Id: add_two_ints_client 3804 2009-02-11 02:16:00Z rob_wheeler $
35 
36 ## Extended version of add_two_int_client that shows how to use
37 ## connection header to pass in metadata to service.
38 
39 import sys
40 
41 import rospy
42 
43 from rospy_tutorials.srv import AddTwoInts
44 
45 ## add two numbers using the add_two_ints service
46 ## @param x int: first number to add
47 ## @param y int: second number to add
49  rospy.wait_for_service('add_two_ints')
50 
51  try:
52  # initialize ServiceProxy with extra header information.
53  # header is only exchanged on initial connection
54  metadata = { 'cookies' : 'peanut butter' }
55  add_two_ints = rospy.ServiceProxy('add_two_ints', AddTwoInts, headers=metadata)
56 
57  print "Requesting %s+%s with cookies=%s"%(x, y, metadata['cookies'])
58 
59  # simplified style
60  resp = add_two_ints(x, y)
61  print "Server's connection headers were", resp._connection_header
62 
63  return resp.sum
64  except rospy.ServiceException, e:
65  print "Service call failed: %s"%e
66 
67 def usage():
68  return "%s [x y]"%sys.argv[0]
69 
70 if __name__ == "__main__":
71 
72  if len(sys.argv) == 1:
73  import random
74  x = random.randint(-50000, 50000)
75  y = random.randint(-50000, 50000)
76  elif len(sys.argv) == 3:
77  try:
78  import string
79  x = string.atoi(sys.argv[1])
80  y = string.atoi(sys.argv[2])
81  except:
82  print usage()
83  sys.exit(1)
84  else:
85  print usage()
86  sys.exit(1)
87  print "%s + %s = %s"%(x, y, add_two_ints_client(x, y))
def add_two_ints_client(x, y)
add two numbers using the add_two_ints service


rospy_tutorials
Author(s): Ken Conley
autogenerated on Fri Jun 7 2019 22:01:45