aiohttp-form-based authentication

Question

I cannot find working code of aiohttp in combination with a login page. The goal is simple: form-based authentication with a username and password, which cookie I would like to use in subsequent aiohttp async fetch calls.

It seems that the whole Session concept changed in aiohttp between versions, so I'm curious how can I implement it in the most recent version. I'm not sure how to get the cookie once and then use it in the asynchronous matter.

I'd really like to see a fully working example, since unfortunately I wasn't able to get it working with the snippets I found everywhere.

I guess this might be the start, but I'm not sure and I certainly do not see how I can connect everything to it (do I also still need a aiohttp.TCPConnector?) http://aiohttp.readthedocs.org/en/latest/client_reference.html#aiohttp.client.ClientSession

Example of my non-async version in Python 2 using mechanize (though I naturally use Python 3 for asyncio etc):

import mechanize
import urllib

class MyClass()
    def __init__(self):
        self.data = {'username' : 'me', 'password' : 'pw'}
        self.login_url = 'http://example.com/login'
        self.login()

    def call(self, url):
        request2 = mechanize.Request(url)
        self.cookie_jar.add_cookie_header(request2)
        response2 = mechanize.urlopen(request2).read()
        return response2    

    def login(self):
        request = mechanize.Request(self.login_url)
        # 'username' and 'password' keys are actually the name of the <input>
        logInfo = urllib.urlencode({'username' : self.data['username'], 
                                    'password' : self.data['password']})
        response = mechanize.urlopen(request, data = logInfo)
        cookie_jar = mechanize.CookieJar()
        cookie_jar.extract_cookies(response, request)
        self.cookie_jar = cookie_jar

mc = MyClass()
mc.call('http://example.com/other_url')

Answer 1

I've just added example for basic auth on client side: client_auth.py

Is it enough for you?

P.S. Actually ClientSession is replacement for old-style request+connector concept. Session is more natural way to save session-related info. But old way is still working.