def ping (self):
""" See if Display server present
Returns True if server present
* self = Display object
"""
from six.moves.xmlrpc_client import ServerProxy
url = self.serverURL
if url == "ObitView":
url = "http://localhost:8765/RPC2"
server = ServerProxy(url)
try:
answer = server.ping(42)
except:
answer = False
pass
else:
pass
if answer:
print("Display Server "+url+" present")
return True
else:
print("Display Server "+url+" NOT present")
return False
