Move from using API key to userIp in making discovery requests.
Reviewed in http://codereview.appspot.com/5031048/
diff --git a/apiclient/discovery.py b/apiclient/discovery.py
index ee1ae54..7cb4852 100644
--- a/apiclient/discovery.py
+++ b/apiclient/discovery.py
@@ -155,7 +155,14 @@
http = httplib2.Http()
requested_url = uritemplate.expand(discoveryServiceUrl, params)
- requested_url = _add_query_parameter(requested_url, 'key', developerKey)
+
+ # REMOTE_ADDR is defined by the CGI spec [RFC3875] as the environment variable
+ # that contains the network address of the client sending the request. If it
+ # exists then add that to the request for the discovery document to avoid
+ # exceeding the quota on discovery requests.
+ if 'REMOTE_ADDR' in os.environ:
+ requested_url = _add_query_parameter(requested_url, 'userIp',
+ os.environ['REMOTE_ADDR'])
logging.info('URL being requested: %s' % requested_url)
resp, content = http.request(requested_url)