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aioalf 0.4.0

aio-alf |build-status|===========aiohttp OAuth 2 Client---------------------`aio-alf` is a OAuth 2 Client base on the aiohttp's AsyncHTTPClientFeatures--------* Automatic token retrieving and renewing* Token expiration control* Automatic retry on status 401 (UNAUTHORIZED)Usage-----Initialize the client and use it as a AsyncHTTPClient object... code-block:: python from aioalf.client import Client from aioalf.httpclient import HTTPRequest client = Client( token_endpoint='http://example.com/token', client_id='client-id', client_secret='secret') resource_uri = 'http://example.com/resource' response = await client.request( 'POST', resource_uri, data='{"name": "alf"}', headers={'Content-Type': 'application/json'} )Alternatively one can pass directly a string to the fetch client.. code-block:: python # ... response = await client.request( 'POST', 'http://example.com/resource', data='{"name": "alf"}', headers={'Content-Type': 'application/json'} )Implicit Flow-------------Support for OAuth2 implict flow to enable it, call `use_implicit_flow` with a `TokenStorage`object and a port range, it defaults to the range (32000, 32009).Example:.. code-block:: python await use_implicit_flow(TokenStorage(), (30000, 30009)) async with Client(token_endpoint='https://token.endpoint', client_id='glBQ3nYU/8/kaVi/bIgXGA==', client_secret='') as client: response = await client.request('GET', 'http://example.com/resource') text = await response.text() print(response.status)The library has a really simple in memory token storage, you should subclass and overwriteits methods if you need to persist the token for a longer period.How it works?-------------Before any request the client tries to retrieve a token on the endpoint,expecting a JSON response with the ``access_token`` and ``expires_in`` keys.The client keeps the token until it is expired, according to the ``expires_in``value.After getting the token, the request is issued with a `Bearer authorizationheader <http://tools.ietf.org/html/draft-ietf-oauth-v2-31#section-7.1>`_:.. code-block:: GET /resource/1 HTTP/1.1 Host: example.com Authorization: Bearer tokenIf the request fails with a 401 (UNAUTHORIZED) status, a new token is retrievedfrom the endpoint and the request is retried. This happens only once, if itfails again the error response is returned.Troubleshooting---------------In case of an error retrieving a token, the error response will be returned,the real request won't happen.Related projects----------------This project tries to be an adaptation to aiohttp of`alf <https://github.com/globocom/alf>`_.. |build-status| image:: https://secure.travis-ci.org/globocom/aio-alf.png?branch=master :target: https://travis-ci.org/globocom/aio-alf