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bacpypes/doc/source/samples/sample014.rst
2016-09-19 17:16:49 -07:00

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.. BACpypes sample code 14
Sample 14 - Getting External Data
=================================
This is a pair of sample applications: a server that provides key:value updates
in the form of JSON objects; and a client that periodically polls the server
for updates and applies them to a cache.
Server Code
-----------
The server is based on SimpleHTTPServer examples, the only interesting part of
the code is responding to a GET request::
class ValueServer(SimpleHTTPServer.SimpleHTTPRequestHandler):
def do_GET(self):
cache_update = {choice(varNames): uniform(0, 100)}
simplejson.dump(cache_update, self.wfile)
The cache update is a key name, selected randomly from the *varNames* list, and
a value between 0 and 100. This is such a simple example that *str()* and
*eval()* could just as easily been used.
Client Code
-----------
This is a long line of text.