class CorsApplication(object):
"""WSGI middleware for handling CORS requests."""
def __init__(self, app, options=None):
self.app = app
self.handler = CorsHandler(options)
def __call__(self, environ, start_response):
# Retrieve the CORS response details.
request = webob.Request(environ)
cors_response = self.handler.handle(request.method, request.headers)
headers = cors_response.headers
if cors_response.state == ResponseState.END:
# Response should end immediately. Set the status and any headers
# and exit.
start_response(cors_response.status, headers.items())
return []
else:
# Response should continue to the user's app. Set any CORS-specific
# headers and keep going.
response = request.get_response(self.app)
for key, value in headers.items():
response.headers.add(key, value)
return response(environ, start_response)
def __init__(self, app, options=None):
self.app = app
self.handler = CorsHandler(options)