aiohttp 0.6.1

http client/server for asyncio

http client/server for asyncio

Requirements

• Python >= 3.3
• asyncio https://pypi.python.org/pypi/asyncio/0.3.1

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