kml update through networklinkcontrol not updating - kml

Question

I am trying to update a kml file through the networkcontrollink with an update
The kml file i want to update is stored on the server is called initial_coord.kml.
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2">
<Document>
<Placemark id="pm123">
<name>point123</name>
<Point>
<coordinates>-95.44,40.42,0</coordinates>
</Point>
</Placemark>
<Placemark id="pm456">
<name>point456</name>
<Point>
<coordinates>-95.43,40.42,0</coordinates>
</Point>
</Placemark>
</Document>
</kml>
The kml file i load to update it is the following:
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<NetworkLink>
<name>Update</name>
<Link>
<href>http://localhost/cgi-bin/testF/add_more_coords.py</href></Link>
</NetworkLink>
</kml>
And the python script i am calling is the following
#!/usr/bin/python
kml= (
'<?xml version="1.0" encoding="UTF-8"?>\n'
'<kml xmlns="http://www.opengis.net/kml/2.2">\n'
'<NetworkLinkControl>\n'
'<Update>\n'
'<targetHref>http://10.10.210.247/initial_coords.kml</targetHref>\n'
'<Change>\n'
'<Placemark targetId="pm123">\n'
'<name>Name changed by Update Change</name>\n'
'<!-- coordinates remain the same -->\n'
'</Placemark>\n'
'</Change>\n'
'</Update>\n'
'</NetworkLinkControl>\n'
'</kml>\n'
)
print 'Content-Type: application/vnd.google-earth.kml+xml\n'
print kml
The update does not work and i am wondering why because it is very similar to the google example

Answer 1

The NetworkLinkControl is strict regarding the target URL and you have localhost in the root KML and 10.10.210.247 in the python-generated output. Most match exactly to work correctly.
<Link>
<href>http://localhost/cgi-bin/testF/add_more_coords.py</href></Link>
</NetworkLink>
<Update>
'<targetHref>http://10.10.210.247/initial_coords.kml</targetHref>\n'
<Update>
You'll notice the targetUrl and NetworkLink URL matching in the tutorial.
Try putting the IP address in the root KML file to match what is generated in the python.
<NetworkLink>
<Link>
<href>http://10.10.210.247/cgi-bin/testF/add_more_coords.py</href>
</Link>
</NetworkLink>
<Update>
'<targetHref>http://10.10.210.247/cgi-bin/testF/add_more_coords.py</targetHref>\n'
<Update>