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http client/server for asyncio

Project description

http client/server for asyncio

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Requirements

License

aiohttp is offered under the BSD license.

Getting started

To retrieve something from the web:

import aiohttp

def get_body(url):
    response = yield from request('GET', url)
    return (yield from response.read())

You can use the get command like this anywhere in your asyncio powered program:

response = yield from aiohttp.request('GET', 'http://python.org')
body = yield from response.read()
print (body)

The signature of request is the following:

request(method, url, *,
        params=None,
        data=None,
        headers=None,
        cookies=None,
        files=None,
        auth=None,
        allow_redirects=True,
        max_redirects=10,
        encoding='utf-8',
        version=(1, 1),
        timeout=None,
        conn_timeout=None,
        compress=None,
        chunked=None,
        expect100=False,
        session=None,
        verify_ssl=True,
        loop=None
)

It constructs and sends a request. It returns response object. Parameters are explained as follow:

  • method: HTTP method
  • url: Request url
  • params: (optional) Dictionary or bytes to be sent in the query string of the new request
  • data: (optional) Dictionary, bytes, or file-like object to send in the body of the request
  • headers: (optional) Dictionary of HTTP Headers to send with the request
  • cookies: (optional) Dict object to send with the request
  • files: (optional) Dictionary of ‘name’: file-like-objects for multipart encoding upload
  • auth: (optional) Auth tuple to enable Basic HTTP Auth
  • timeout: (optional) Float describing the timeout of the request
  • conn_timeout: (optional) Float describing the timeout of the tcp connection
  • allow_redirects: (optional) Boolean. Set to True if POST/PUT/DELETE redirect following is allowed.
  • compress: Boolean. Set to True if request has to be compressed with deflate encoding.
  • chunked: Boolean or Integer. Set to chunk size for chunked transfer encoding.
  • expect100: Boolean. Expect 100-continue response from server.
  • session: aiohttp.Session instance to support connection pooling and session cookies.
  • loop: Optional event loop.

Gunicorn worker

Paster configuration example:

[server:main]
use = egg:gunicorn#main
host = 0.0.0.0
port = 8080
worker_class = aiohttp.worker.AsyncGunicornWorker

CHANGES

0.6.2 (02-18-2014)

  • Fix trailing char in allowed_methods.
  • Start slow request timer for first request.

0.6.1 (02-17-2014)

  • Added utility method HttpResponse.read_and_close()
  • Added slow request timeout.
  • Enable socket SO_KEEPALIVE if available. (@polymorphm)

0.6.0 (02-12-2014)

  • Better handling for process exit.

0.5.0 (01-29-2014)

  • Allow to use custom HttpRequest client class.
  • Use gunicorn keepalive setting for async worker.
  • Log leaking responses.
  • python 3.4 compatibility

0.4.4 (11-15-2013)

  • Resolve only AF_INET family, because it is not clear how to pass extra info to asyncio.

0.4.3 (11-15-2013)

  • Allow to wait completion of request with HttpResponse.wait_for_close()

0.4.2 (11-14-2013)

  • Handle exception in client request stream.
  • Prevent host resolving for each client request.

0.4.1 (11-12-2013)

  • Added client support for expect: 100-continue header.

0.4 (11-06-2013)

  • Added custom wsgi application close procedure
  • Fixed concurrent host failure in HttpClient

0.3 (11-04-2013)

  • Added PortMapperWorker
  • Added HttpClient
  • Added tcp connection timeout to http client
  • Better client connection errors handling
  • Gracefully handle process exit

0.2

  • Fix packaging

Project details


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